Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2548360 A
Publication typeGrant
Publication date10 Apr 1951
Filing date29 Mar 1948
Priority date29 Mar 1948
Publication numberUS 2548360 A, US 2548360A, US-A-2548360, US2548360 A, US2548360A
InventorsGermain Stanley A
Original AssigneeGermain Stanley A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric oil well heater
US 2548360 A
Abstract  available in
Images(3)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 10, 1951 s. A. GERMAIN 2,548,360

ELECTRIC OIL WELL HEATER Original Filed May 8, 1942 I5 Sheets-Sheet 1 STANLEYA. GEE/MA/N,

INVENTOR ATTORNEY April 10, 1951 s. A. GERMAIN 2,548,360

ELECTRIC OIL WELL HEATER Original Filed May 8, 1942 3 Sheets-Sheet 2 6 M1 L 7% 7% W 6 l A A 7 A //& 7 m Wm W [E R W llllll o M & v H k r L7\ .M m m IY I L April 1951 s. A. GERMAIN 2, 8,360

ELECTRIC OIL WELL HEATER Original Filed May 8, 1942 3 Sheets-Sheet 3 STANLEYA. Gee/441 INVENTOR Patented Apr. 10, 1951 UNITED STATES PATENT OFFICE Substituted for abandoned application Serial No. 442,175, May 8, 1942. Thi application March 29, 1948, Serial No. 17,675

3 Claims.

Ihe present application is filed to take the place of abandoned application S. N. 442,175, filed May 8, 1942.

This invention comprehends the provision of an improved heater for oil wells for the same purpose of that shown in my pending application for patent filed May 6, 1939, Serial No. 272,203, issued March 17, 1942, as Patent No. 2,276,833, and contemplates the provision of an electric heater adapted to be lowered into the casing of a well and submerged in the oil in such a manner and to such eiTect that heavy gravity oil which is ordinarily incapable of being pumped from the well in its natural state, at least in sufiicient volume to render a well profitable or efiicient, may be heated and thereby thinned to a constituency capable of being pumped in full and profitable volume.

An object is to provide a mechanical pump structure which is particularly arranged to receive and support a special and novel form of electrical heating apparatus embodying a plurality of heating elements of special form and characteristics which, when connected with a source of electricity will not influence or disturb the operation of one or more of the elements in the event that another or others are broken or im paired, and, at the same time will permit of variations in any of the elements without affecting the others.

Another object is to provide an electric circuit including a multiple conductor cable, the conductors of which are surrounded by a conductor at ground potential for controlling the current supplied to the elements at a point common to all of the conductors of the cable.

It is an object also to provide an oil well heater embodying an electrical circuit in which the resistance characteristic is variable in such a manner as to provide greatly increasing resistance to the flow of current depending upon the temperature of the heating elements, together with means for varying the resistance in accordance with its temperature so as to avoid excessive temperatures in the elements by lowering the current flow by reason of the increased resistance corresponding to the higher temperatures. Also, in such case, the resistance characteristic is so established that it will prevent destructive temperatures in the elements.

A still further object is to provide in a heater of the character mentioned, means for insulating the heating elements of the system so as to divide the voltage applied to them and between them, and a common ground through the use of terminals encased in protective shields.

Another object is to provide means for individually varying the fiow of current in any of the heating elements fed by their respective conductors in order that the temperature of any one of the elements may be continuous and inherently adjusted for its individual indicated temperature condition without interference with the temperature effects of the remaining elements.

Other objects include: provision of means for varying the voltage applied to each of the heating elements independently of the variations in the external circuit; means for indicating the temperatures of resistance elements far below the surface of the earth by the employment of current indicating devices previously calibrated to the resistance of the heating elements and their resistance temperature characteristics while under normal load conditions.

Other objects will appear as the description of my invention progresses.

I have shown in the accompanying drawings a preferred form of oil well heater particularly adapted to carry out the purposes of my invention, subject to modification, within the scope of the appended claims, without departing from the spirit of my invention.

In said drawings:

Fig. 1 is a sectional elevation of an oil well with my improved apparatus operatively installed therein;

Fig. 2 is a sectional elevation of the uppermost unit of the apparatus as shown in Fig. 1 by means of which a multiple conductor cable from a point above the ground surface is operatively connected with the heater;

Fig. 3 shows a sectional elevation of the upper portion of the heater;

Fig. 4 is a sectional elevation of the lower portion of the heater;

Fig. 5 is a cross sectional view of the structure on line 5-5 of Fig. 2;

Fig. 6 is a cross sectional view of the same on line 65 of Fig. 3;

Fig. '7 is a cross sectional view on line 'l! of Fig. 3;

Fig. 8 is a cross sectional view on line 88 of Fig. 4; and

Fig. 9 is a circuit diagram of the heater and associated elements.

As shown in Figs. 1 and 2 a cable connecting unit A is suspended within the well casing B outwardly of the pump casing C and is formed of a plurality of axially alined and connected sections A1, A2, and A3. A cable D depending from the surface carriers a plurality of independently insulated conductors D1, D2, and D3 which are embedded in a thermoplastic body D4 covered exteriorly by means of a metal armor D5. That portion of the cable D which extends into the upper portion of section A1 of unit A, as at D6, is wiped or soldered with metal so as to provide a uniformly smooth periphery for the cable in order that its entrance to the section A1 may be suitably packed against leakage of water or oil. To

this end a conventional stumng box structure is provided at the upper end of section A1 and includes a compressible packing ring D1 seated in a bore D8 formed in the upper end of section A1 and a plug D9 threaded into the open end of section A1 and'adapted to compress the packing ring D1 around the portion D5 of the cable and between the end of plug D9 and bottom of bore D8 of section A1. I 7

Sections A1 and A2 are detachably secured together by means of a nipple A3 threaded into the lower end of section A1 so that adjacent ends of sections A1 and A2 will compress a copper and asbestos gasket A4 therebetween. Also at the joint between intermediate sections A1 and A2 I provide a stufiing box including a compressible packing ring A5 held in a bore As of section A2 adapted to b'e'compressed around a portion D10 of cable D by means of an adjustable plug A7 threaded into the nipple A3. Portion D10 of the cable is stripped of its armor from a point slightly below the packing ring D7 to its lower end as shown in Fig. 2. I Sections A2 and A3 are detachably connected, as shown in Fig. ,2, by means of a nipple A8 threaded into the upper end of section As, and this joint is r'endere'dleakproof by means of a copper and asbestos gasket A9, a packing ring A10 and a plug A11, arranged 111 a manner similar to the elements of the joint between sections A1 and A2, theportion D10 f the cable being extended through the ring A10 and plug A11.

Withinthe section A3 I provide a dielectric block E in which the conductors D1, D2, and D3 are inserted 'and held in tubular contacts E1 as by means of set screws E2, and in which contacts insulated wires F1, F2, and F3, 'are similarly held by means 'o'i set screws F4. The lower end of section As is closed by'in'ea'ns of a closure A12 which has a flangeAn overlying a copper and asbestos 1 washer A14 held against 'a shoulder A15. Closure A12 is threaded so to receive a nut A16 below the'lowr end of s'ection Asso that when the nut is tightened the lower "end of the section A3 will be leakproof. Wires F1, F2, and F3 are enclosed in steam conduit whichi'swelded at G1 and G2, respectively, to the upper and lower ends of the plug Ac. Wires F1, F2, and F3 are insulated apart and from the conduit G.

As shown in Fig. 3 the lower of conduit G is screwed into a nipple H and is welded at Hz to the upper end of said nipple. The lower end of said nipple is screwed into a projection H3 of a fiirture H and'li'as'a gasket Hi interposed between said nipple and said projection to render the joint leakproof. rirm'ren has a bottom Hrand a circular wall He, together with a passage H affording communication between the interior of the fixture and the portion H3 whereby wires F1, F2, and F3 may be ledinto the interior of the fixture for connection with terminals J1, J2 and J3, respectively, mounted on bottom H; of member H for connection with heating elements to be hereinafter described.

Member H is enclosed in an elongated sleeve K2 and the lateral projection H3 to which the conduit G is attached extends through an elongated peripheral slot K1. The upper end of sleeve K is closed by means of a coupling K2 which telescopes into thesleeve and is securely held by means of a plurality of screws K3. The upper end of closure K2 is reduced and extended into a pump nipple C1 while the lower end of said nipple is welded at K5 to said closure, as shown in Fig. 5. Closure K2 and the fixture H are detachably associated with the sleeve K for the purpose of assembly and disassembly of the parts, the slot K1 being open at the upper end of the sleeve so that said fixture may be readily moved into and from operative position in the sleeve, and the nipple and closure are also removable from the sleeve when the screws K3 are loosened. it will be noted that the upper end of the sleeve K has a plurality of recesses Ks which are adapted to be engaged by pins K7 for properly alining the nipple C1 and sleeve K.

Fixture H has a separate closure H7 which is threaded into the upper open end of a chamber H8 against a gasket H9 and may be provided with peripheral bores H10 preferably arranged with their axes on a diainetrical line so as to receive a spanner wrench by means of which the closure may be tightened so as to provide a leakproof joint. Inasmuch as chamber H6 is in constant communication with chamber H8 the closures H1 and 1-11 for said chambers, respectively, completely seal the chamber H3 against the entrance of air or moisture except such as may result from condensation of the latent air in conduit G.

It must be understood that while the terminals J1, J2, and J3 are insulated apart as well as from the bottom H4 of member H Within chamber Ha it is important that there should be no possibility of the presence of moisture in the vicinity of the exposed ends of the terminals. Hence, the moisture absorber is an extra though not always, a necessary precaution.

h The pump casing C is connected with the perforated inlet nipple C1 by means of a coupling C2 and, as shown in Fig. 1, said nipple is substantially below the level of oil in the well inorder that the oil whichi heated at points below the pump will be readily induced into the nipple for expulsion at a point above the surface.

The heaterproper includes a plurality (three in the form shown herein) of heating elements which are chosen because of certain characteristics whereby theyare subject to a variation of their inherent resistance to the flow of electric current therethroughin accordance with created temperatures. For instance, I have determined that a heater for the purpose of my invention should b ecap'able of normally and consistently maintaining atemperature of about 340 or more degrees Fahrenheit when submerged in oil of a well, and thatlower or higher temperatures will, respectively,decrease the eificiency of the heater and deteriorate theelements. Hence, I have ascertained that a modification of a certain element now inuse has what may be termed a thermostatic efiect and that asthe temperature thereof is approaching a predetermined point, depending upon the peculiar characteristics of the element in different cases,the resistance will vary to a sufiicient extent with temperature changes, so as to prevent an excessive temperature or rapidly reduce a prevailing temperature to a normal point.

have shown in Figs. 3 and 4, three of such elements connected in agrounded electrical circuit with a source of power from above the surface and suitably encased in a protective shell or housing. Said elements are indicated at L1, L2, and L3 and are connected at their upper ends, respectively, with the terminals, J1, J2, and J3. A perforated cas'ing or housing L4 encloses the elementsandyet by'means of the perforations L5 therein affords direct contact between the 011 of the well and the elements for heating purposes. The upper end of easing Li extends substantially into the bottom of sleeve K and preferably against the bottom H4 of fixture H. The casing is welded at L6 to sleeve K so as to remove possibility of leakage of oil from the casing into chamber H8 and thereby causing short circuiting of the terminals J1, J2, and J3.

Casing L4 is of substantial length and is connected at its lower end to a coupling L7 which, in turn, is connected with the upper end of a relatively short tubular section usually known in the art as a bull plug L8. Said member L8 is open at its bottom and is perforated throughout its length and serves to enclose the lower end of the heating elements L1, L2, and L3, as shown in Fig. 4.

A fixture L9 is loosely mounted within member L8 and has a cylindrical wall L10, a closed top web L11 and a detachable bottom closure L12 which is screwed into the lower end of the Wall L against a gasket L13 for the purpose of sealing a terminal chamber L14 within fixture L9 against the entrance of oil from the well.

Closure L12 is similar to closure H7 in that it is provided with wrench receiving bores L15. The lower ends of the heating elements L1, L2, and L; are attached to but insulated from the bottom L11 of fixture L9 and are connected with terminals M1, M2, and 1%, respectively, within chamber L14. The lower ends of the terminals support a contact plate L15 which is continuously in electrical contact with all of the elements of the system and also with a ground contact L16 attached to one of the heating element terminals and engaging the upper side of closure L12, for affording a common ground to all of the elements through the plate L15.

The parts of the heater unit illustrated in Fig. 4 are so formed that the assembly and disassembly thereof may be readily accomplished, particularly with respect to the outside diameter of fixture L9 and the inside diameter of protective casing L4, so that the heater unit when completely assembled may be inserted through casing L4 and into the lower member L8.

The oil well heater herein shown and described has peculiar characteristics and functions which have not in my knowledge been employed and Which are briefly defined as follows:

The employment of three separately controlled electrical circuits with but three single conductors and a ground connection, thereby permitting variations in any of the elements without disturbing the balance of the elements;

The connection of three or more elements of an electrical circuit in such a manner that they may be supplied with current by means of a multiple conductor cable and at the same time surrounded by a conductor at ground potential for controlling the current supplied to the elements at a point common to all;

The employment of resistance elements, the inherent characteristics of which adapt them to high variations in resistance in accordance with temperature changes and in which the resistance characteristics vary with temperature changes, thereby lowering the current flowing through the elements by reason of the increase of resistance in accordance With the temperature of the elements.

By means of the structure and electrical connections shown and described I am enabled to insulate the elements of the circuits so as to regulate and divide the voltage applied to the heating elements through the use of shielded and encased terminals.

The temperatures of the several elements being abled to indicate at the surface of the earth the prevailing temperature of any element Without the use of pilot wires, potential leads or other auxiliary circuits as well as a consequent interruption of the power circuit supplying the elements.

It will be apparent that all of the above effects and others result from the use of my heating apparatus, and especially when the heater is submerged in the oil of a well a particular feature consists in the arrangement and connections of the several heating elements with a source of current supply so that in the event any of the elements should become impaired the other elements would remain unaffected.

Now, with regard to the mechanical structure of my apparatus it may be mentioned that all of the units for operatively connecting the heater with a pump are separately assembled and the final assembly of all of said units is therefore accomplished with facility. All joints between parts of the units are sealed where necessary against possibility of leakage and other joints are formed so that certain parts may be readily assembled and disassembled. There is no possibility of short circuiting any of the lead in wires or elements because of the individual and group insulation of such wires and elements.

In operation the heater assembly is lowered into the well as shown in Fig. 1 to a point below the level of the oil in the well. When the heat generated in the heat penetrating structure by the heating elements becomes effective for thinning the oil of the well the oil is caused to flow and is exhausted from the well by means of the pump C in far greater volume and to greater profit than when a heater is not employed. Usually, it has been ascertained, the well production is more than doubled and generally always substantially increased over production without a heater,

I claim:

1. In oil well heaters incorporating elongated metal sheathed electrical resistance heating elements and supported from and below the screen tube of a submerged oil well pump, a structure comprising: an elongated tubular member detachably secured to the lower end of the pump screen and provided with a longitudinally extending slot through the wall thereof and opening into the upper end thereof; a hollow member mounted within said tubular member and having a laterally projecting hollow part extending through the slot in said tubular member, whereby said hollow member may be readily mounted in the tubular member before the latter is connected to the screen, the upper terminals of the elongated electrical resistance heating elements being mounted fluid tight in the lower wall of said hollow member and projecting into the interior of said member; a detachable fluid tight cover for said hollow member; a fluid tight electrical conductor-enclosing conduit secured at its lower end to the laterally projecting part of said hollow member and projecting upwardly therefrom; insulated electrical conductors extending through said conduit and each secured to one of said heating unit terminals within the hollow member; a cable leading electrical current to said conductors; and means effective to seal the upper end of 76 said conduit about the cable.

A structure as set forth in claim 1 and in Which the means for sealing the u er end of the conduit about the cable comprises a threaded closure Welded to the upper end of the conduit and provided with a peripheral flange; a nut mounted on the threaded portion of said closure, a cable-connecting conduit having an inturned flange at its lower end clamped against the flange of said closure member by the nut; a length of armored cable extending into the upper end of said cable-connecting conduit, a connector mounted 'within said cable-connecting conduit connecting the conductors of said armored cable to the conductors secured to the electrical resistance heating units; and 'a packing gland arranged at the upper end of said cable-connecting conduit sealing the upper end thereof against the "armored cable.

3. A structure as set forth in claim 1 and in addition comprising a fluid tight casing arranged within the end of said tubular member said end being perforated to allow circulation of oil therethrough and around the heating elements, the

8 lower ends of the metal sheathed resistance heating elements being secured in fluid tight relation in the upper Wall of said casing with the ends 'of the resistance e1ements projecting into said casing; a removable plug of conductive material closing the lower end of said casing; and spring finger means grounding the resistance elements to said casing and thereby to the pump casing.

STANLEY -A. GERMAIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,535,776 Hollister Apr. 28, 1925 1,646,599 Schaefer Oct, 25, 1 927 1,864,960 Ta'y1or June 28, 1-932 2,134,610 Hogg Oct. "25, 1938 2,233,890 l-Ioo'ver Mar. 4, 1 941 2,276,833 Germain Mar. 1'7, 1942

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1535776 *13 Jul 192228 Apr 1925James B PauleyOil-well heater
US1646599 *30 Apr 192525 Oct 1927Schaefer George AApparatus for removing fluid from wells
US1864960 *28 Jan 192828 Jun 1932Horace R AllenOil well heater
US2134610 *26 Apr 193725 Oct 1938Hogg Coy COil-bearing sand heater
US2233890 *8 Dec 19374 Mar 1941Byron Jackson CoEccentric suspension and cable connection for submersible motor pumps
US2276833 *6 May 193917 Mar 1942Germain Stanley AElectric heater for oil wells
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2632836 *8 Nov 194924 Mar 1953Thermactor CompanyOil well heater
US2647196 *6 Nov 195028 Jul 1953Union Oil CoApparatus for heating oil wells
US2703621 *4 May 19538 Mar 1955Ford George WOil well bottom hole flow increasing unit
US2738409 *26 Aug 195313 Mar 1956Bowman Hyman DHeating apparatus
US2750487 *12 Aug 195212 Jun 1956Turbine Equipment CompanyElectric heater
US2881301 *7 Nov 19577 Apr 1959Bowman Hyman DFluid heater
US3026940 *19 May 195827 Mar 1962Electronic Oil Well Heater IncOil well temperature indicator and control
US3101116 *4 Apr 196120 Aug 1963Electronic Oil Well Heater IncBottom hole jet heater
US3341688 *12 May 196412 Sep 1967American Thermoelectric CorpOil well heating apparatus
US6269876 *8 Mar 19997 Aug 2001Shell Oil CompanyElectrical heater
US658168424 Apr 200124 Jun 2003Shell Oil CompanyIn Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids
US658850424 Apr 20018 Jul 2003Shell Oil CompanyIn situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids
US659190624 Apr 200115 Jul 2003Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected oxygen content
US659190724 Apr 200115 Jul 2003Shell Oil CompanyIn situ thermal processing of a coal formation with a selected vitrinite reflectance
US660703324 Apr 200119 Aug 2003Shell Oil CompanyIn Situ thermal processing of a coal formation to produce a condensate
US660957024 Apr 200126 Aug 2003Shell Oil CompanyIn situ thermal processing of a coal formation and ammonia production
US668838724 Apr 200110 Feb 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate
US669851524 Apr 20012 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a relatively slow heating rate
US670201624 Apr 20019 Mar 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer
US670875824 Apr 200123 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation leaving one or more selected unprocessed areas
US671213524 Apr 200130 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation in reducing environment
US671213624 Apr 200130 Mar 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a selected production well spacing
US671213724 Apr 200130 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material
US671554624 Apr 20016 Apr 2004Shell Oil CompanyIn situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore
US671554724 Apr 20016 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation
US671554824 Apr 20016 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids
US671554924 Apr 20016 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio
US671904724 Apr 200113 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment
US672242924 Apr 200120 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas
US672243024 Apr 200120 Apr 2004Shell Oil CompanyIn situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio
US672243124 Apr 200120 Apr 2004Shell Oil CompanyIn situ thermal processing of hydrocarbons within a relatively permeable formation
US672592024 Apr 200127 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products
US672592124 Apr 200127 Apr 2004Shell Oil CompanyIn situ thermal processing of a coal formation by controlling a pressure of the formation
US672592824 Apr 200127 Apr 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a distributed combustor
US672939524 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells
US672939624 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range
US672939724 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance
US672940124 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation and ammonia production
US673279424 Apr 200111 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
US673279524 Apr 200111 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material
US673279624 Apr 200111 May 2004Shell Oil CompanyIn situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio
US673621524 Apr 200118 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration
US673939324 Apr 200125 May 2004Shell Oil CompanyIn situ thermal processing of a coal formation and tuning production
US673939424 Apr 200125 May 2004Shell Oil CompanyProduction of synthesis gas from a hydrocarbon containing formation
US674258724 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation
US674258824 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content
US674258924 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation using repeating triangular patterns of heat sources
US674259324 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation
US674583124 Apr 20018 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation
US674583224 Apr 20018 Jun 2004Shell Oil CompanySitu thermal processing of a hydrocarbon containing formation to control product composition
US674583724 Apr 20018 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a controlled heating rate
US674902124 Apr 200115 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a controlled heating rate
US675221024 Apr 200122 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation using heat sources positioned within open wellbores
US675826824 Apr 20016 Jul 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate
US676121624 Apr 200113 Jul 2004Shell Oil CompanyIn situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas
US676388624 Apr 200120 Jul 2004Shell Oil CompanyIn situ thermal processing of a coal formation with carbon dioxide sequestration
US676948324 Apr 20013 Aug 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources
US676948524 Apr 20013 Aug 2004Shell Oil CompanyIn situ production of synthesis gas from a coal formation through a heat source wellbore
US678962524 Apr 200114 Sep 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources
US680519524 Apr 200119 Oct 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas
US682068824 Apr 200123 Nov 2004Shell Oil CompanyIn situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio
US686609724 Apr 200115 Mar 2005Shell Oil CompanyIn situ thermal processing of a coal formation to increase a permeability/porosity of the formation
US687170724 Apr 200129 Mar 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration
US687755424 Apr 200112 Apr 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control
US687755524 Apr 200212 Apr 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation while inhibiting coking
US688063324 Apr 200219 Apr 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce a desired product
US688063524 Apr 200119 Apr 2005Shell Oil CompanyIn situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio
US688976924 Apr 200110 May 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected moisture content
US689605324 Apr 200124 May 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources
US690200324 Apr 20017 Jun 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content
US690200424 Apr 20017 Jun 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a movable heating element
US691053624 Apr 200128 Jun 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US691307824 Apr 20015 Jul 2005Shell Oil CompanyIn Situ thermal processing of hydrocarbons within a relatively impermeable formation
US691585024 Apr 200212 Jul 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation having permeable and impermeable sections
US691844224 Apr 200219 Jul 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation in a reducing environment
US691844324 Apr 200219 Jul 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range
US692325724 Apr 20022 Aug 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce a condensate
US692325812 Jun 20032 Aug 2005Shell Oil CompanyIn situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
US692906724 Apr 200216 Aug 2005Shell Oil CompanyHeat sources with conductive material for in situ thermal processing of an oil shale formation
US693215524 Oct 200223 Aug 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well
US694856224 Apr 200227 Sep 2005Shell Oil CompanyProduction of a blending agent using an in situ thermal process in a relatively permeable formation
US694856324 Apr 200127 Sep 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content
US695124724 Apr 20024 Oct 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation using horizontal heat sources
US695308724 Apr 200111 Oct 2005Shell Oil CompanyThermal processing of a hydrocarbon containing formation to increase a permeability of the formation
US695976124 Apr 20011 Nov 2005Shell Oil CompanyIn situ thermal processing of a coal formation with a selected ratio of heat sources to production wells
US696430024 Apr 200215 Nov 2005Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore
US696637224 Apr 200122 Nov 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids
US696637424 Apr 200222 Nov 2005Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation using gas to increase mobility
US696912324 Oct 200229 Nov 2005Shell Oil CompanyUpgrading and mining of coal
US697396724 Apr 200113 Dec 2005Shell Oil CompanySitu thermal processing of a coal formation using pressure and/or temperature control
US698154824 Apr 20023 Jan 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation
US699103124 Apr 200131 Jan 2006Shell Oil CompanyIn situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products
US699103224 Apr 200231 Jan 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US699103324 Apr 200231 Jan 2006Shell Oil CompanyIn situ thermal processing while controlling pressure in an oil shale formation
US699103624 Apr 200231 Jan 2006Shell Oil CompanyThermal processing of a relatively permeable formation
US699104524 Oct 200231 Jan 2006Shell Oil CompanyForming openings in a hydrocarbon containing formation using magnetic tracking
US699416024 Apr 20017 Feb 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range
US699416124 Apr 20017 Feb 2006Kevin Albert MaherIn situ thermal processing of a coal formation with a selected moisture content
US699416824 Apr 20017 Feb 2006Scott Lee WellingtonIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio
US699416924 Apr 20027 Feb 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation with a selected property
US699725524 Apr 200114 Feb 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation in a reducing environment
US699751824 Apr 200214 Feb 2006Shell Oil CompanyIn situ thermal processing and solution mining of an oil shale formation
US700424724 Apr 200228 Feb 2006Shell Oil CompanyConductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
US700425124 Apr 200228 Feb 2006Shell Oil CompanyIn situ thermal processing and remediation of an oil shale formation
US701115424 Oct 200214 Mar 2006Shell Oil CompanyIn situ recovery from a kerogen and liquid hydrocarbon containing formation
US701397224 Apr 200221 Mar 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a natural distributed combustor
US701766124 Apr 200128 Mar 2006Shell Oil CompanyProduction of synthesis gas from a coal formation
US703266024 Apr 200225 Apr 2006Shell Oil CompanyIn situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation
US703658324 Sep 20012 May 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation
US704039724 Apr 20029 May 2006Shell Oil CompanyThermal processing of an oil shale formation to increase permeability of the formation
US704039824 Apr 20029 May 2006Shell Oil CompanyIn situ thermal processing of a relatively permeable formation in a reducing environment
US704039924 Apr 20029 May 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a controlled heating rate
US704040024 Apr 20029 May 2006Shell Oil CompanyIn situ thermal processing of a relatively impermeable formation using an open wellbore
US705180724 Apr 200230 May 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with quality control
US705180824 Oct 200230 May 2006Shell Oil CompanySeismic monitoring of in situ conversion in a hydrocarbon containing formation
US705181124 Apr 200230 May 2006Shell Oil CompanyIn situ thermal processing through an open wellbore in an oil shale formation
US705560024 Apr 20026 Jun 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with controlled production rate
US706314524 Oct 200220 Jun 2006Shell Oil CompanyMethods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations
US706625424 Oct 200227 Jun 2006Shell Oil CompanyIn situ thermal processing of a tar sands formation
US706625724 Oct 200227 Jun 2006Shell Oil CompanyIn situ recovery from lean and rich zones in a hydrocarbon containing formation
US707357824 Oct 200311 Jul 2006Shell Oil CompanyStaged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation
US7077198 *24 Oct 200218 Jul 2006Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation using barriers
US707719924 Oct 200218 Jul 2006Shell Oil CompanyIn situ thermal processing of an oil reservoir formation
US708646524 Oct 20028 Aug 2006Shell Oil CompanyIn situ production of a blending agent from a hydrocarbon containing formation
US708646824 Apr 20018 Aug 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores
US709001324 Oct 200215 Aug 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce heated fluids
US709694124 Apr 200129 Aug 2006Shell Oil CompanyIn situ thermal processing of a coal formation with heat sources located at an edge of a coal layer
US709694224 Apr 200229 Aug 2006Shell Oil CompanyIn situ thermal processing of a relatively permeable formation while controlling pressure
US709695324 Apr 200129 Aug 2006Shell Oil CompanyIn situ thermal processing of a coal formation using a movable heating element
US710099424 Oct 20025 Sep 2006Shell Oil CompanyProducing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation
US710431924 Oct 200212 Sep 2006Shell Oil CompanyIn situ thermal processing of a heavy oil diatomite formation
US711456624 Oct 20023 Oct 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US712134124 Oct 200317 Oct 2006Shell Oil CompanyConductor-in-conduit temperature limited heaters
US712134223 Apr 200417 Oct 2006Shell Oil CompanyThermal processes for subsurface formations
US712815324 Oct 200231 Oct 2006Shell Oil CompanyTreatment of a hydrocarbon containing formation after heating
US715617624 Oct 20022 Jan 2007Shell Oil CompanyInstallation and use of removable heaters in a hydrocarbon containing formation
US716561524 Oct 200223 Jan 2007Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden
US721973424 Oct 200322 May 2007Shell Oil CompanyInhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation
US722586631 Jan 20065 Jun 2007Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US732036422 Apr 200522 Jan 2008Shell Oil CompanyInhibiting reflux in a heated well of an in situ conversion system
US735387222 Apr 20058 Apr 2008Shell Oil CompanyStart-up of temperature limited heaters using direct current (DC)
US735718022 Apr 200515 Apr 2008Shell Oil CompanyInhibiting effects of sloughing in wellbores
US736058817 Oct 200622 Apr 2008Shell Oil CompanyThermal processes for subsurface formations
US737070422 Apr 200513 May 2008Shell Oil CompanyTriaxial temperature limited heater
US738387722 Apr 200510 Jun 2008Shell Oil CompanyTemperature limited heaters with thermally conductive fluid used to heat subsurface formations
US740444112 Mar 200729 Jul 2008Geosierra, LlcHydraulic feature initiation and propagation control in unconsolidated and weakly cemented sediments
US74100025 Aug 200412 Aug 2008Stream-Flo Industries, Ltd.Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device
US742491522 Apr 200516 Sep 2008Shell Oil CompanyVacuum pumping of conductor-in-conduit heaters
US743107622 Apr 20057 Oct 2008Shell Oil CompanyTemperature limited heaters using modulated DC power
US743503721 Apr 200614 Oct 2008Shell Oil CompanyLow temperature barriers with heat interceptor wells for in situ processes
US746169123 Jan 20079 Dec 2008Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US748127422 Apr 200527 Jan 2009Shell Oil CompanyTemperature limited heaters with relatively constant current
US749066522 Apr 200517 Feb 2009Shell Oil CompanyVariable frequency temperature limited heaters
US750052821 Apr 200610 Mar 2009Shell Oil CompanyLow temperature barrier wellbores formed using water flushing
US751000022 Apr 200531 Mar 2009Shell Oil CompanyReducing viscosity of oil for production from a hydrocarbon containing formation
US752032523 Jan 200721 Apr 2009Geosierra LlcEnhanced hydrocarbon recovery by in situ combustion of oil sand formations
US752709421 Apr 20065 May 2009Shell Oil CompanyDouble barrier system for an in situ conversion process
US753371920 Apr 200719 May 2009Shell Oil CompanyWellhead with non-ferromagnetic materials
US754032419 Oct 20072 Jun 2009Shell Oil CompanyHeating hydrocarbon containing formations in a checkerboard pattern staged process
US754687321 Apr 200616 Jun 2009Shell Oil CompanyLow temperature barriers for use with in situ processes
US754947020 Oct 200623 Jun 2009Shell Oil CompanySolution mining and heating by oxidation for treating hydrocarbon containing formations
US755276213 Dec 200630 Jun 2009Stream-Flo Industries Ltd.Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device
US755609520 Oct 20067 Jul 2009Shell Oil CompanySolution mining dawsonite from hydrocarbon containing formations with a chelating agent
US755609620 Oct 20067 Jul 2009Shell Oil CompanyVarying heating in dawsonite zones in hydrocarbon containing formations
US755936720 Oct 200614 Jul 2009Shell Oil CompanyTemperature limited heater with a conduit substantially electrically isolated from the formation
US755936820 Oct 200614 Jul 2009Shell Oil CompanySolution mining systems and methods for treating hydrocarbon containing formations
US756270620 Oct 200621 Jul 2009Shell Oil CompanySystems and methods for producing hydrocarbons from tar sands formations
US756270719 Oct 200721 Jul 2009Shell Oil CompanyHeating hydrocarbon containing formations in a line drive staged process
US757505221 Apr 200618 Aug 2009Shell Oil CompanyIn situ conversion process utilizing a closed loop heating system
US757505321 Apr 200618 Aug 2009Shell Oil CompanyLow temperature monitoring system for subsurface barriers
US758158920 Oct 20061 Sep 2009Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US758478920 Oct 20068 Sep 2009Shell Oil CompanyMethods of cracking a crude product to produce additional crude products
US759130623 Jan 200722 Sep 2009Geosierra LlcEnhanced hydrocarbon recovery by steam injection of oil sand formations
US759131020 Oct 200622 Sep 2009Shell Oil CompanyMethods of hydrotreating a liquid stream to remove clogging compounds
US759714720 Apr 20076 Oct 2009Shell Oil CompanyTemperature limited heaters using phase transformation of ferromagnetic material
US760405220 Apr 200720 Oct 2009Shell Oil CompanyCompositions produced using an in situ heat treatment process
US760405423 Jan 200720 Oct 2009Geosierra LlcEnhanced hydrocarbon recovery by convective heating of oil sand formations
US761096220 Apr 20073 Nov 2009Shell Oil CompanySour gas injection for use with in situ heat treatment
US763168920 Apr 200715 Dec 2009Shell Oil CompanySulfur barrier for use with in situ processes for treating formations
US763169019 Oct 200715 Dec 2009Shell Oil CompanyHeating hydrocarbon containing formations in a spiral startup staged sequence
US763502320 Apr 200722 Dec 2009Shell Oil CompanyTime sequenced heating of multiple layers in a hydrocarbon containing formation
US763502419 Oct 200722 Dec 2009Shell Oil CompanyHeating tar sands formations to visbreaking temperatures
US763502520 Oct 200622 Dec 2009Shell Oil CompanyCogeneration systems and processes for treating hydrocarbon containing formations
US76409807 Apr 20085 Jan 2010Shell Oil CompanyThermal processes for subsurface formations
US764476519 Oct 200712 Jan 2010Shell Oil CompanyHeating tar sands formations while controlling pressure
US767368119 Oct 20079 Mar 2010Shell Oil CompanyTreating tar sands formations with karsted zones
US767378620 Apr 20079 Mar 2010Shell Oil CompanyWelding shield for coupling heaters
US767731019 Oct 200716 Mar 2010Shell Oil CompanyCreating and maintaining a gas cap in tar sands formations
US767731419 Oct 200716 Mar 2010Shell Oil CompanyMethod of condensing vaporized water in situ to treat tar sands formations
US768164719 Oct 200723 Mar 2010Shell Oil CompanyMethod of producing drive fluid in situ in tar sands formations
US768329620 Apr 200723 Mar 2010Shell Oil CompanyAdjusting alloy compositions for selected properties in temperature limited heaters
US770351319 Oct 200727 Apr 2010Shell Oil CompanyWax barrier for use with in situ processes for treating formations
US771717119 Oct 200718 May 2010Shell Oil CompanyMoving hydrocarbons through portions of tar sands formations with a fluid
US773094519 Oct 20078 Jun 2010Shell Oil CompanyUsing geothermal energy to heat a portion of a formation for an in situ heat treatment process
US773094619 Oct 20078 Jun 2010Shell Oil CompanyTreating tar sands formations with dolomite
US773094719 Oct 20078 Jun 2010Shell Oil CompanyCreating fluid injectivity in tar sands formations
US77359351 Jun 200715 Jun 2010Shell Oil CompanyIn situ thermal processing of an oil shale formation containing carbonate minerals
US774845827 Feb 20066 Jul 2010Geosierra LlcInitiation and propagation control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments
US778542720 Apr 200731 Aug 2010Shell Oil CompanyHigh strength alloys
US779372220 Apr 200714 Sep 2010Shell Oil CompanyNon-ferromagnetic overburden casing
US779822018 Apr 200821 Sep 2010Shell Oil CompanyIn situ heat treatment of a tar sands formation after drive process treatment
US779822131 May 200721 Sep 2010Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US783113321 Apr 20069 Nov 2010Shell Oil CompanyInsulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration
US783113421 Apr 20069 Nov 2010Shell Oil CompanyGrouped exposed metal heaters
US783248418 Apr 200816 Nov 2010Shell Oil CompanyMolten salt as a heat transfer fluid for heating a subsurface formation
US784140119 Oct 200730 Nov 2010Shell Oil CompanyGas injection to inhibit migration during an in situ heat treatment process
US784140818 Apr 200830 Nov 2010Shell Oil CompanyIn situ heat treatment from multiple layers of a tar sands formation
US784142518 Apr 200830 Nov 2010Shell Oil CompanyDrilling subsurface wellbores with cutting structures
US784541119 Oct 20077 Dec 2010Shell Oil CompanyIn situ heat treatment process utilizing a closed loop heating system
US784992218 Apr 200814 Dec 2010Shell Oil CompanyIn situ recovery from residually heated sections in a hydrocarbon containing formation
US786037721 Apr 200628 Dec 2010Shell Oil CompanySubsurface connection methods for subsurface heaters
US786638520 Apr 200711 Jan 2011Shell Oil CompanyPower systems utilizing the heat of produced formation fluid
US786638613 Oct 200811 Jan 2011Shell Oil CompanyIn situ oxidation of subsurface formations
US786638813 Oct 200811 Jan 2011Shell Oil CompanyHigh temperature methods for forming oxidizer fuel
US786639515 Mar 200711 Jan 2011Geosierra LlcHydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments
US787090412 Feb 200918 Jan 2011Geosierra LlcEnhanced hydrocarbon recovery by steam injection of oil sand formations
US791235820 Apr 200722 Mar 2011Shell Oil CompanyAlternate energy source usage for in situ heat treatment processes
US791827129 Jun 20095 Apr 2011Stream-Flo Industries Ltd.Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device
US793108618 Apr 200826 Apr 2011Shell Oil CompanyHeating systems for heating subsurface formations
US794219721 Apr 200617 May 2011Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US79422034 Jan 201017 May 2011Shell Oil CompanyThermal processes for subsurface formations
US795045318 Apr 200831 May 2011Shell Oil CompanyDownhole burner systems and methods for heating subsurface formations
US79504569 Jun 201031 May 2011Halliburton Energy Services, Inc.Casing deformation and control for inclusion propagation
US798686921 Apr 200626 Jul 2011Shell Oil CompanyVarying properties along lengths of temperature limited heaters
US801145113 Oct 20086 Sep 2011Shell Oil CompanyRanging methods for developing wellbores in subsurface formations
US802757121 Apr 200627 Sep 2011Shell Oil CompanyIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US804261018 Apr 200825 Oct 2011Shell Oil CompanyParallel heater system for subsurface formations
US807084021 Apr 20066 Dec 2011Shell Oil CompanyTreatment of gas from an in situ conversion process
US808381320 Apr 200727 Dec 2011Shell Oil CompanyMethods of producing transportation fuel
US811327213 Oct 200814 Feb 2012Shell Oil CompanyThree-phase heaters with common overburden sections for heating subsurface formations
US814666113 Oct 20083 Apr 2012Shell Oil CompanyCryogenic treatment of gas
US814666913 Oct 20083 Apr 2012Shell Oil CompanyMulti-step heater deployment in a subsurface formation
US815187413 Nov 200810 Apr 2012Halliburton Energy Services, Inc.Thermal recovery of shallow bitumen through increased permeability inclusions
US81518809 Dec 201010 Apr 2012Shell Oil CompanyMethods of making transportation fuel
US815190710 Apr 200910 Apr 2012Shell Oil CompanyDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US816205913 Oct 200824 Apr 2012Shell Oil CompanyInduction heaters used to heat subsurface formations
US816240510 Apr 200924 Apr 2012Shell Oil CompanyUsing tunnels for treating subsurface hydrocarbon containing formations
US817233510 Apr 20098 May 2012Shell Oil CompanyElectrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US817730510 Apr 200915 May 2012Shell Oil CompanyHeater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations
US819163028 Apr 20105 Jun 2012Shell Oil CompanyCreating fluid injectivity in tar sands formations
US819268226 Apr 20105 Jun 2012Shell Oil CompanyHigh strength alloys
US819665813 Oct 200812 Jun 2012Shell Oil CompanyIrregular spacing of heat sources for treating hydrocarbon containing formations
US82205399 Oct 200917 Jul 2012Shell Oil CompanyControlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation
US822416324 Oct 200317 Jul 2012Shell Oil CompanyVariable frequency temperature limited heaters
US822416424 Oct 200317 Jul 2012Shell Oil CompanyInsulated conductor temperature limited heaters
US822416521 Apr 200617 Jul 2012Shell Oil CompanyTemperature limited heater utilizing non-ferromagnetic conductor
US822586621 Jul 201024 Jul 2012Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US823092716 May 201131 Jul 2012Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US823378229 Sep 201031 Jul 2012Shell Oil CompanyGrouped exposed metal heaters
US823873024 Oct 20037 Aug 2012Shell Oil CompanyHigh voltage temperature limited heaters
US824077413 Oct 200814 Aug 2012Shell Oil CompanySolution mining and in situ treatment of nahcolite beds
US82565129 Oct 20094 Sep 2012Shell Oil CompanyMovable heaters for treating subsurface hydrocarbon containing formations
US82618329 Oct 200911 Sep 2012Shell Oil CompanyHeating subsurface formations with fluids
US82671709 Oct 200918 Sep 2012Shell Oil CompanyOffset barrier wells in subsurface formations
US82671859 Oct 200918 Sep 2012Shell Oil CompanyCirculated heated transfer fluid systems used to treat a subsurface formation
US827245513 Oct 200825 Sep 2012Shell Oil CompanyMethods for forming wellbores in heated formations
US827666113 Oct 20082 Oct 2012Shell Oil CompanyHeating subsurface formations by oxidizing fuel on a fuel carrier
US82818619 Oct 20099 Oct 2012Shell Oil CompanyCirculated heated transfer fluid heating of subsurface hydrocarbon formations
US8327681 *18 Apr 200811 Dec 2012Shell Oil CompanyWellbore manufacturing processes for in situ heat treatment processes
US83279329 Apr 201011 Dec 2012Shell Oil CompanyRecovering energy from a subsurface formation
US83533479 Oct 200915 Jan 2013Shell Oil CompanyDeployment of insulated conductors for treating subsurface formations
US835562322 Apr 200515 Jan 2013Shell Oil CompanyTemperature limited heaters with high power factors
US838181518 Apr 200826 Feb 2013Shell Oil CompanyProduction from multiple zones of a tar sands formation
US84345559 Apr 20107 May 2013Shell Oil CompanyIrregular pattern treatment of a subsurface formation
US84487079 Apr 201028 May 2013Shell Oil CompanyNon-conducting heater casings
US845935918 Apr 200811 Jun 2013Shell Oil CompanyTreating nahcolite containing formations and saline zones
US848525211 Jul 201216 Jul 2013Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US853649713 Oct 200817 Sep 2013Shell Oil CompanyMethods for forming long subsurface heaters
US855597131 May 201215 Oct 2013Shell Oil CompanyTreating tar sands formations with dolomite
US856207825 Nov 200922 Oct 2013Shell Oil CompanyHydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations
US857903117 May 201112 Nov 2013Shell Oil CompanyThermal processes for subsurface formations
US860609120 Oct 200610 Dec 2013Shell Oil CompanySubsurface heaters with low sulfidation rates
US86278878 Dec 200814 Jan 2014Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US86318668 Apr 201121 Jan 2014Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US863632325 Nov 200928 Jan 2014Shell Oil CompanyMines and tunnels for use in treating subsurface hydrocarbon containing formations
US866217518 Apr 20084 Mar 2014Shell Oil CompanyVarying properties of in situ heat treatment of a tar sands formation based on assessed viscosities
US87017688 Apr 201122 Apr 2014Shell Oil CompanyMethods for treating hydrocarbon formations
US87017698 Apr 201122 Apr 2014Shell Oil CompanyMethods for treating hydrocarbon formations based on geology
US87398748 Apr 20113 Jun 2014Shell Oil CompanyMethods for heating with slots in hydrocarbon formations
US875290410 Apr 200917 Jun 2014Shell Oil CompanyHeated fluid flow in mines and tunnels used in heating subsurface hydrocarbon containing formations
US878958612 Jul 201329 Jul 2014Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US879139618 Apr 200829 Jul 2014Shell Oil CompanyFloating insulated conductors for heating subsurface formations
US88204068 Apr 20112 Sep 2014Shell Oil CompanyElectrodes for electrical current flow heating of subsurface formations with conductive material in wellbore
US88334538 Apr 201116 Sep 2014Shell Oil CompanyElectrodes for electrical current flow heating of subsurface formations with tapered copper thickness
US88511709 Apr 20107 Oct 2014Shell Oil CompanyHeater assisted fluid treatment of a subsurface formation
US885750624 May 201314 Oct 2014Shell Oil CompanyAlternate energy source usage methods for in situ heat treatment processes
US88638403 Mar 201221 Oct 2014Halliburton Energy Services, Inc.Thermal recovery of shallow bitumen through increased permeability inclusions
US88757888 Apr 20114 Nov 2014Shell Oil CompanyLow temperature inductive heating of subsurface formations
US88818069 Oct 200911 Nov 2014Shell Oil CompanySystems and methods for treating a subsurface formation with electrical conductors
US895558521 Sep 201217 Feb 2015Halliburton Energy Services, Inc.Forming inclusions in selected azimuthal orientations from a casing section
US90163706 Apr 201228 Apr 2015Shell Oil CompanyPartial solution mining of hydrocarbon containing layers prior to in situ heat treatment
US902210921 Jan 20145 May 2015Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US90221189 Oct 20095 May 2015Shell Oil CompanyDouble insulated heaters for treating subsurface formations
US90330428 Apr 201119 May 2015Shell Oil CompanyForming bitumen barriers in subsurface hydrocarbon formations
US90518299 Oct 20099 Jun 2015Shell Oil CompanyPerforated electrical conductors for treating subsurface formations
US91275238 Apr 20118 Sep 2015Shell Oil CompanyBarrier methods for use in subsurface hydrocarbon formations
US91275388 Apr 20118 Sep 2015Shell Oil CompanyMethodologies for treatment of hydrocarbon formations using staged pyrolyzation
US91297289 Oct 20098 Sep 2015Shell Oil CompanySystems and methods of forming subsurface wellbores
US918178018 Apr 200810 Nov 2015Shell Oil CompanyControlling and assessing pressure conditions during treatment of tar sands formations
US93097554 Oct 201212 Apr 2016Shell Oil CompanyThermal expansion accommodation for circulated fluid systems used to heat subsurface formations
US93999054 May 201526 Jul 2016Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US952832216 Jun 201427 Dec 2016Shell Oil CompanyDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US20020040778 *24 Apr 200111 Apr 2002Wellington Scott LeeIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content
US20020046883 *24 Apr 200125 Apr 2002Wellington Scott LeeIn situ thermal processing of a coal formation using pressure and/or temperature control
US20020076212 *24 Apr 200120 Jun 2002Etuan ZhangIn situ thermal processing of a hydrocarbon containing formation producing a mixture with oxygenated hydrocarbons
US20030079877 *24 Apr 20021 May 2003Wellington Scott LeeIn situ thermal processing of a relatively impermeable formation in a reducing environment
US20030080604 *24 Apr 20021 May 2003Vinegar Harold J.In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation
US20030098149 *24 Apr 200229 May 2003Wellington Scott LeeIn situ thermal recovery from a relatively permeable formation using gas to increase mobility
US20030098605 *24 Apr 200229 May 2003Vinegar Harold J.In situ thermal recovery from a relatively permeable formation
US20030100451 *24 Apr 200229 May 2003Messier Margaret AnnIn situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore
US20030102124 *24 Apr 20025 Jun 2003Vinegar Harold J.In situ thermal processing of a blending agent from a relatively permeable formation
US20030102125 *24 Apr 20025 Jun 2003Wellington Scott LeeIn situ thermal processing of a relatively permeable formation in a reducing environment
US20030102126 *24 Apr 20025 Jun 2003Sumnu-Dindoruk Meliha DenizIn situ thermal recovery from a relatively permeable formation with controlled production rate
US20030102130 *24 Apr 20025 Jun 2003Vinegar Harold J.In situ thermal recovery from a relatively permeable formation with quality control
US20030111223 *24 Apr 200219 Jun 2003Rouffignac Eric Pierre DeIn situ thermal processing of an oil shale formation using horizontal heat sources
US20030116315 *24 Apr 200226 Jun 2003Wellington Scott LeeIn situ thermal processing of a relatively permeable formation
US20030130136 *24 Apr 200210 Jul 2003Rouffignac Eric Pierre DeIn situ thermal processing of a relatively impermeable formation using an open wellbore
US20030131993 *24 Apr 200217 Jul 2003Etuan ZhangIn situ thermal processing of an oil shale formation with a selected property
US20030131994 *24 Apr 200217 Jul 2003Vinegar Harold J.In situ thermal processing and solution mining of an oil shale formation
US20030131995 *24 Apr 200217 Jul 2003De Rouffignac Eric PierreIn situ thermal processing of a relatively impermeable formation to increase permeability of the formation
US20030131996 *24 Apr 200217 Jul 2003Vinegar Harold J.In situ thermal processing of an oil shale formation having permeable and impermeable sections
US20030136558 *24 Apr 200224 Jul 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation to produce a desired product
US20030136559 *24 Apr 200224 Jul 2003Wellington Scott LeeIn situ thermal processing while controlling pressure in an oil shale formation
US20030141066 *24 Apr 200231 Jul 2003Karanikas John MichaelIn situ thermal processing of an oil shale formation while inhibiting coking
US20030141067 *24 Apr 200231 Jul 2003Rouffignac Eric Pierre DeIn situ thermal processing of an oil shale formation to increase permeability of the formation
US20030141068 *24 Apr 200231 Jul 2003Pierre De Rouffignac EricIn situ thermal processing through an open wellbore in an oil shale formation
US20030142964 *24 Apr 200231 Jul 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation using a controlled heating rate
US20030146002 *24 Apr 20027 Aug 2003Vinegar Harold J.Removable heat sources for in situ thermal processing of an oil shale formation
US20030148894 *24 Apr 20027 Aug 2003Vinegar Harold J.In situ thermal processing of an oil shale formation using a natural distributed combustor
US20030155111 *24 Oct 200221 Aug 2003Shell Oil CoIn situ thermal processing of a tar sands formation
US20030164239 *24 Apr 20024 Sep 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation in a reducing environment
US20030173078 *24 Apr 200218 Sep 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation to produce a condensate
US20030173081 *24 Oct 200218 Sep 2003Vinegar Harold J.In situ thermal processing of an oil reservoir formation
US20030173085 *24 Oct 200218 Sep 2003Vinegar Harold J.Upgrading and mining of coal
US20030196801 *24 Oct 200223 Oct 2003Vinegar Harold J.In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well
US20030196810 *24 Oct 200223 Oct 2003Vinegar Harold J.Treatment of a hydrocarbon containing formation after heating
US20030201098 *24 Oct 200230 Oct 2003Karanikas John MichaelIn situ recovery from a hydrocarbon containing formation using one or more simulations
US20030205378 *24 Oct 20026 Nov 2003Wellington Scott LeeIn situ recovery from lean and rich zones in a hydrocarbon containing formation
US20030209348 *24 Apr 200213 Nov 2003Ward John MichaelIn situ thermal processing and remediation of an oil shale formation
US20040040715 *24 Oct 20024 Mar 2004Wellington Scott LeeIn situ production of a blending agent from a hydrocarbon containing formation
US20040144541 *24 Oct 200329 Jul 2004Picha Mark GregoryForming wellbores using acoustic methods
US20040211554 *24 Apr 200228 Oct 2004Vinegar Harold J.Heat sources with conductive material for in situ thermal processing of an oil shale formation
US20040211557 *24 Apr 200228 Oct 2004Cole Anthony ThomasConductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
US20050051341 *5 Aug 200410 Mar 2005Stream-Flo Industries, Ltd.Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device
US20050092483 *24 Oct 20025 May 2005Vinegar Harold J.In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US20050269077 *22 Apr 20058 Dec 2005Sandberg Chester LStart-up of temperature limited heaters using direct current (DC)
US20050269088 *22 Apr 20058 Dec 2005Vinegar Harold JInhibiting effects of sloughing in wellbores
US20050269089 *22 Apr 20058 Dec 2005Sandberg Chester LTemperature limited heaters using modulated DC power
US20050269090 *22 Apr 20058 Dec 2005Vinegar Harold JTemperature limited heaters with thermally conductive fluid used to heat subsurface formations
US20050269091 *22 Apr 20058 Dec 2005Guillermo Pastor-SanzReducing viscosity of oil for production from a hydrocarbon containing formation
US20050269092 *22 Apr 20058 Dec 2005Vinegar Harold JVacuum pumping of conductor-in-conduit heaters
US20050269093 *22 Apr 20058 Dec 2005Sandberg Chester LVariable frequency temperature limited heaters
US20050269094 *22 Apr 20058 Dec 2005Harris Christopher KTriaxial temperature limited heater
US20050269095 *22 Apr 20058 Dec 2005Fairbanks Michael DInhibiting reflux in a heated well of an in situ conversion system
US20050269313 *22 Apr 20058 Dec 2005Vinegar Harold JTemperature limited heaters with high power factors
US20060005968 *22 Apr 200512 Jan 2006Vinegar Harold JTemperature limited heaters with relatively constant current
US20060051080 *21 Oct 20059 Mar 2006Michael Ray CarrOilfield tool annulus heater
US20060289536 *22 Apr 200528 Dec 2006Vinegar Harold JSubsurface electrical heaters using nitride insulation
US20070045265 *21 Apr 20061 Mar 2007Mckinzie Billy J IiLow temperature barriers with heat interceptor wells for in situ processes
US20070045266 *21 Apr 20061 Mar 2007Sandberg Chester LIn situ conversion process utilizing a closed loop heating system
US20070045267 *21 Apr 20061 Mar 2007Vinegar Harold JSubsurface connection methods for subsurface heaters
US20070045268 *21 Apr 20061 Mar 2007Vinegar Harold JVarying properties along lengths of temperature limited heaters
US20070095536 *20 Oct 20063 May 2007Vinegar Harold JCogeneration systems and processes for treating hydrocarbon containing formations
US20070108200 *21 Apr 200617 May 2007Mckinzie Billy J IiLow temperature barrier wellbores formed using water flushing
US20070108201 *21 Apr 200617 May 2007Vinegar Harold JInsulated conductor temperature limited heater for subsurface heating coupled in a three-phase wye configuration
US20070119098 *21 Apr 200631 May 2007Zaida DiazTreatment of gas from an in situ conversion process
US20070125533 *20 Oct 20067 Jun 2007Minderhoud Johannes KMethods of hydrotreating a liquid stream to remove clogging compounds
US20070127897 *20 Oct 20067 Jun 2007John Randy CSubsurface heaters with low sulfidation rates
US20070131415 *20 Oct 200614 Jun 2007Vinegar Harold JSolution mining and heating by oxidation for treating hydrocarbon containing formations
US20070131419 *20 Oct 200614 Jun 2007Maria Roes Augustinus WMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US20070131420 *20 Oct 200614 Jun 2007Weijian MoMethods of cracking a crude product to produce additional crude products
US20070131427 *20 Oct 200614 Jun 2007Ruijian LiSystems and methods for producing hydrocarbons from tar sands formations
US20070131428 *20 Oct 200614 Jun 2007Willem Cornelis Den Boestert JMethods of filtering a liquid stream produced from an in situ heat treatment process
US20070133959 *21 Apr 200614 Jun 2007Vinegar Harold JGrouped exposed metal heaters
US20070133960 *21 Apr 200614 Jun 2007Vinegar Harold JIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US20070133961 *21 Apr 200614 Jun 2007Fairbanks Michael DMethods and systems for producing fluid from an in situ conversion process
US20070137856 *21 Apr 200621 Jun 2007Mckinzie Billy JDouble barrier system for an in situ conversion process
US20070144732 *21 Apr 200628 Jun 2007Kim Dong SLow temperature barriers for use with in situ processes
US20070199695 *23 Mar 200630 Aug 2007Grant HockingHydraulic Fracture Initiation and Propagation Control in Unconsolidated and Weakly Cemented Sediments
US20070199697 *24 Apr 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by steam injection of oil sand formations
US20070199698 *23 Jan 200730 Aug 2007Grant HockingEnhanced Hydrocarbon Recovery By Steam Injection of Oil Sand Formations
US20070199699 *23 Jan 200730 Aug 2007Grant HockingEnhanced Hydrocarbon Recovery By Vaporizing Solvents in Oil Sand Formations
US20070199700 *3 Apr 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by in situ combustion of oil sand formations
US20070199701 *18 Apr 200630 Aug 2007Grant HockingEhanced hydrocarbon recovery by in situ combustion of oil sand formations
US20070199702 *23 Jan 200730 Aug 2007Grant HockingEnhanced Hydrocarbon Recovery By In Situ Combustion of Oil Sand Formations
US20070199704 *12 Mar 200730 Aug 2007Grant HockingHydraulic Fracture Initiation and Propagation Control in Unconsolidated and Weakly Cemented Sediments
US20070199705 *24 Apr 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by vaporizing solvents in oil sand formations
US20070199706 *24 Apr 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by convective heating of oil sand formations
US20070199707 *23 Jan 200730 Aug 2007Grant HockingEnhanced Hydrocarbon Recovery By Convective Heating of Oil Sand Formations
US20070199708 *15 Mar 200730 Aug 2007Grant HockingHydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments
US20070199710 *29 Mar 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by convective heating of oil sand formations
US20070199711 *29 Mar 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by vaporizing solvents in oil sand formations
US20070199712 *29 Mar 200630 Aug 2007Grant HockingEnhanced hydrocarbon recovery by steam injection of oil sand formations
US20070199713 *27 Feb 200630 Aug 2007Grant HockingInitiation and propagation control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments
US20070209799 *23 Jan 200713 Sep 2007Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US20070221377 *20 Oct 200627 Sep 2007Vinegar Harold JSolution mining systems and methods for treating hydrocarbon containing formations
US20080035346 *20 Apr 200714 Feb 2008Vijay NairMethods of producing transportation fuel
US20080035347 *20 Apr 200714 Feb 2008Brady Michael PAdjusting alloy compositions for selected properties in temperature limited heaters
US20080035348 *20 Apr 200714 Feb 2008Vitek John MTemperature limited heaters using phase transformation of ferromagnetic material
US20080035705 *20 Apr 200714 Feb 2008Menotti James LWelding shield for coupling heaters
US20080038144 *20 Apr 200714 Feb 2008Maziasz Phillip JHigh strength alloys
US20080107577 *20 Oct 20068 May 2008Vinegar Harold JVarying heating in dawsonite zones in hydrocarbon containing formations
US20080128134 *19 Oct 20075 Jun 2008Ramesh Raju MudunuriProducing drive fluid in situ in tar sands formations
US20080135244 *19 Oct 200712 Jun 2008David Scott MillerHeating hydrocarbon containing formations in a line drive staged process
US20080135253 *19 Oct 200712 Jun 2008Vinegar Harold JTreating tar sands formations with karsted zones
US20080135254 *19 Oct 200712 Jun 2008Vinegar Harold JIn situ heat treatment process utilizing a closed loop heating system
US20080142216 *19 Oct 200719 Jun 2008Vinegar Harold JTreating tar sands formations with dolomite
US20080142217 *19 Oct 200719 Jun 2008Roelof PietersonUsing geothermal energy to heat a portion of a formation for an in situ heat treatment process
US20080173442 *20 Apr 200724 Jul 2008Vinegar Harold JSulfur barrier for use with in situ processes for treating formations
US20080173444 *20 Apr 200724 Jul 2008Francis Marion StoneAlternate energy source usage for in situ heat treatment processes
US20080173449 *20 Apr 200724 Jul 2008Thomas David FowlerSour gas injection for use with in situ heat treatment
US20080173450 *20 Apr 200724 Jul 2008Bernard GoldbergTime sequenced heating of multiple layers in a hydrocarbon containing formation
US20080174115 *20 Apr 200724 Jul 2008Gene Richard LambirthPower systems utilizing the heat of produced formation fluid
US20080185147 *19 Oct 20077 Aug 2008Vinegar Harold JWax barrier for use with in situ processes for treating formations
US20080217003 *19 Oct 200711 Sep 2008Myron Ira KuhlmanGas injection to inhibit migration during an in situ heat treatment process
US20080217004 *19 Oct 200711 Sep 2008De Rouffignac Eric PierreHeating hydrocarbon containing formations in a checkerboard pattern staged process
US20080217015 *19 Oct 200711 Sep 2008Vinegar Harold JHeating hydrocarbon containing formations in a spiral startup staged sequence
US20080217016 *19 Oct 200711 Sep 2008George Leo StegemeierCreating fluid injectivity in tar sands formations
US20080217321 *21 Apr 200611 Sep 2008Vinegar Harold JTemperature limited heater utilizing non-ferromagnetic conductor
US20080277113 *19 Oct 200713 Nov 2008George Leo StegemeierHeating tar sands formations while controlling pressure
US20080283246 *19 Oct 200720 Nov 2008John Michael KaranikasHeating tar sands formations to visbreaking temperatures
US20090014180 *19 Oct 200715 Jan 2009George Leo StegemeierMoving hydrocarbons through portions of tar sands formations with a fluid
US20090014181 *19 Oct 200715 Jan 2009Vinegar Harold JCreating and maintaining a gas cap in tar sands formations
US20090071652 *18 Apr 200819 Mar 2009Vinegar Harold JIn situ heat treatment from multiple layers of a tar sands formation
US20090078461 *18 Apr 200826 Mar 2009Arthur James MansureDrilling subsurface wellbores with cutting structures
US20090084547 *18 Apr 20082 Apr 2009Walter Farman FarmayanDownhole burner systems and methods for heating subsurface formations
US20090090509 *18 Apr 20089 Apr 2009Vinegar Harold JIn situ recovery from residually heated sections in a hydrocarbon containing formation
US20090095476 *18 Apr 200816 Apr 2009Scott Vinh NguyenMolten salt as a heat transfer fluid for heating a subsurface formation
US20090095477 *18 Apr 200816 Apr 2009Scott Vinh NguyenHeating systems for heating subsurface formations
US20090095478 *18 Apr 200816 Apr 2009John Michael KaranikasVarying properties of in situ heat treatment of a tar sands formation based on assessed viscosities
US20090095479 *18 Apr 200816 Apr 2009John Michael KaranikasProduction from multiple zones of a tar sands formation
US20090095480 *18 Apr 200816 Apr 2009Vinegar Harold JIn situ heat treatment of a tar sands formation after drive process treatment
US20090101346 *31 May 200723 Apr 2009Shell Oil Company, Inc.In situ recovery from a hydrocarbon containing formation
US20090101347 *13 Nov 200823 Apr 2009Schultz Roger LThermal recovery of shallow bitumen through increased permeability inclusions
US20090120646 *18 Apr 200814 May 2009Dong Sub KimElectrically isolating insulated conductor heater
US20090126929 *18 Apr 200821 May 2009Vinegar Harold JTreating nahcolite containing formations and saline zones
US20090145606 *12 Feb 200911 Jun 2009Grant HockingEnhanced Hydrocarbon Recovery By Steam Injection of Oil Sand FOrmations
US20090189617 *13 Oct 200830 Jul 2009David BurnsContinuous subsurface heater temperature measurement
US20090194269 *13 Oct 20086 Aug 2009Vinegar Harold JThree-phase heaters with common overburden sections for heating subsurface formations
US20090194282 *13 Oct 20086 Aug 2009Gary Lee BeerIn situ oxidation of subsurface formations
US20090194329 *13 Oct 20086 Aug 2009Rosalvina Ramona GuimeransMethods for forming wellbores in heated formations
US20090194333 *13 Oct 20086 Aug 2009Macdonald DuncanRanging methods for developing wellbores in subsurface formations
US20090194524 *13 Oct 20086 Aug 2009Dong Sub KimMethods for forming long subsurface heaters
US20090200025 *13 Oct 200813 Aug 2009Jose Luis BravoHigh temperature methods for forming oxidizer fuel
US20090200031 *13 Oct 200813 Aug 2009David Scott MillerIrregular spacing of heat sources for treating hydrocarbon containing formations
US20090200854 *13 Oct 200813 Aug 2009Vinegar Harold JSolution mining and in situ treatment of nahcolite beds
US20090260823 *10 Apr 200922 Oct 2009Robert George Prince-WrightMines and tunnels for use in treating subsurface hydrocarbon containing formations
US20090260824 *10 Apr 200922 Oct 2009David Booth BurnsHydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations
US20090260833 *29 Jun 200922 Oct 2009Stream-Flo Industries, Ltd.Method and Apparatus to Provide Electrical Connection in a Wellhead for a Downhole Electrical Device
US20090272533 *10 Apr 20095 Nov 2009David Booth BurnsHeated fluid flow in mines and tunnels used in heating subsurface hydrocarbon containing formations
US20090272535 *10 Apr 20095 Nov 2009David Booth BurnsUsing tunnels for treating subsurface hydrocarbon containing formations
US20090272578 *10 Apr 20095 Nov 2009Macdonald Duncan CharlesDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US20090301724 *30 Jun 200910 Dec 2009Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US20090321075 *18 Apr 200831 Dec 2009Christopher Kelvin HarrisParallel heater system for subsurface formations
US20100071904 *25 Nov 200925 Mar 2010Shell Oil CompanyHydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations
US20100089584 *9 Oct 200915 Apr 2010David Booth BurnsDouble insulated heaters for treating subsurface formations
US20100089586 *9 Oct 200915 Apr 2010John Andrew StaneckiMovable heaters for treating subsurface hydrocarbon containing formations
US20100096137 *9 Oct 200922 Apr 2010Scott Vinh NguyenCirculated heated transfer fluid heating of subsurface hydrocarbon formations
US20100101783 *9 Oct 200929 Apr 2010Vinegar Harold JUsing self-regulating nuclear reactors in treating a subsurface formation
US20100101784 *9 Oct 200929 Apr 2010Vinegar Harold JControlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation
US20100101794 *9 Oct 200929 Apr 2010Robert Charles RyanHeating subsurface formations with fluids
US20100108310 *9 Oct 20096 May 2010Thomas David FowlerOffset barrier wells in subsurface formations
US20100108379 *9 Oct 20096 May 2010David Alston EdburySystems and methods of forming subsurface wellbores
US20100147521 *9 Oct 200917 Jun 2010Xueying XiePerforated electrical conductors for treating subsurface formations
US20100147522 *9 Oct 200917 Jun 2010Xueying XieSystems and methods for treating a subsurface formation with electrical conductors
US20100206570 *9 Oct 200919 Aug 2010Ernesto Rafael Fonseca OcamposCirculated heated transfer fluid systems used to treat a subsurface formation
US20100224368 *9 Oct 20099 Sep 2010Stanley Leroy MasonDeployment of insulated conductors for treating subsurface formations
US20100252261 *9 Jun 20107 Oct 2010Halliburton Energy Services, Inc.Casing deformation and control for inclusion propagation
US20100258265 *9 Apr 201014 Oct 2010John Michael KaranikasRecovering energy from a subsurface formation
US20100258290 *9 Apr 201014 Oct 2010Ronald Marshall BassNon-conducting heater casings
US20100258291 *9 Apr 201014 Oct 2010Everett De St Remey EdwardHeated liners for treating subsurface hydrocarbon containing formations
US20100258309 *9 Apr 201014 Oct 2010Oluropo Rufus AyodeleHeater assisted fluid treatment of a subsurface formation
US20100270015 *26 Apr 201028 Oct 2010Shell Oil CompanyIn situ thermal processing of an oil shale formation
US20100272595 *26 Apr 201028 Oct 2010Shell Oil CompanyHigh strength alloys
US20100276141 *28 Apr 20104 Nov 2010Shell Oil CompanyCreating fluid injectivity in tar sands formations
US20100276147 *12 Feb 20094 Nov 2010Grant HockingEnhanced Hydrocarbon Recovery By Steam Injection of Oil Sand FOrmations
US20110042084 *9 Apr 201024 Feb 2011Robert BosIrregular pattern treatment of a subsurface formation
US20110088904 *21 Jul 201021 Apr 2011De Rouffignac Eric PierreIn situ recovery from a hydrocarbon containing formation
US20110168394 *9 Dec 201014 Jul 2011Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
WO2001081720A124 Apr 20011 Nov 2001Shell Internationale Research Maatschappij B.V.In situ recovery of hydrocarbons from a kerogen-containing formation
WO2001081722A124 Apr 20011 Nov 2001Shell Internationale Research Maatschappij B.V.A method for treating a hydrocarbon-containing formation
WO2001083940A124 Apr 20018 Nov 2001Shell Internationale Research Maatschappij B.V.Electrical well heating system and method
WO2005106195A122 Apr 200510 Nov 2005Shell Internationale Research Maatschappij B.V.Temperature limited heaters with thermally conductive fluid used to heat subsurface formations
WO2006116078A121 Apr 20062 Nov 2006Shell Internationale Research Maatschappij B.V.Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase wye configuration
WO2006116097A121 Apr 20062 Nov 2006Shell Internationale Research Maatschappij B.V.Temperature limited heater utilizing non-ferromagnetic conductor
Classifications
U.S. Classification166/60, 392/301
International ClassificationE21B36/00, E21B36/04
Cooperative ClassificationE21B36/04
European ClassificationE21B36/04