US3280913A - Vertical fracturing process and apparatus for wells - Google Patents
Vertical fracturing process and apparatus for wells Download PDFInfo
- Publication number
- US3280913A US3280913A US357604A US35760464A US3280913A US 3280913 A US3280913 A US 3280913A US 357604 A US357604 A US 357604A US 35760464 A US35760464 A US 35760464A US 3280913 A US3280913 A US 3280913A
- Authority
- US
- United States
- Prior art keywords
- well pipe
- formation
- fracture
- well
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Definitions
- the present invention relates to stimulating formations and, more particularly, to permanently propping the mouth of a vertical formation fracture.
- Hydraulic fracturing processes in which a fracturing .fluid is forced into a producing well in sufficient volume and under sucient pressure to rupture a subsurface formation, have found only limited use in the stimulation of damaged formations, particularly those which are relatively soft, because it has been diicult to permanently prop the portion of lthe fracture nearest the well bore (fracture mouth) penetrating the damaged formation.
- the instant invention overcomes disadvantages in each hydraulic fracturing processes by causing the wall of the well casing pipe string, which is arranged in the well bore penetrating the formation to be stimulated, to rupture, expand, and permanently prop the mouth of a vertical fracture formed in said formation.
- the technique is useful in any type of formation.
- the invention resides in weakening the well pipe axially along two lines spaced approximately 180 from each other through the interval or formation to be stimulated mechanically, by milling or cutting, or explosively by use of directionally oriented explosive charges or radially directed jet charges or guns after which a well pipe or casing forming charge is detonated to force the well pipe halves defined by said spaced llines apart past their yield points, thereby creating and permanently propping with the expanded casing a fracture in the formation.
- Long intervals may be successfully fractured in this manner by leaving occasional spaces or blanks so that the expanded casing walls are provided ywith necessary support.
- a primary object of this invention is to provide an improved well formation stimulation or fracturing technique.
- FIG. 1 is a vertical, partly sectional view showing representative apparatus that may be used to weaken sections of the well pipe it is desi-red to rupture and expand;
- FIG. 2 is a vertical, partly sectional view illustrating a further step; viz., the positioning of an explosive charge when the milling apparatus of FIG. 1 is used to weaken the well pipe;
- FIG. 3 is a view taken along lines 3-3 of FIG. 2;
- FIG. 3A is a plan view of the well pipe similar to that shown in FIG. 3 except the well pipe has been cut cornpletely through on each opposing side;
- FIG. 4 is a plan view illustrating the appearance of the well pipe and formation fracture following detonation of the explosive charge of FIG. 2;
- FIG. 5 is a plan view similar to that of FIG. 4 illustrating a further step permitted by this technique, that of moving fracture fluid containing propping agents into -the fracture that has been formed;
- FIG. 6 is a vertical, partly sectional View of one type of combination tool which may be used for explosively weakening and expanding the well pipe;
- FIG. 7 is a view taken along lines 77 of FIG. 6;
- FIG. 8 is a vertical View of another type of combination ltool for explosively weakening and expanding the Well pipe.
- FIG. 9 is a plan view of the well pipe after expansion by the explosive elements of the tools of FIGS. 6 and 8.
- a milling tool 13 is seen in FIG. 1 suspended in a well pipe :10 from a cable 14. It is positioned adjacent a formation or interval 15 which it is desired to fracture and which is penetrated by a well bore 411 in which is arranged well pipe 10.
- Tool 13 mills and weakens casing pipe 10 along two lines spaced approximately 180 from each other.
- the main' parts of the tool include centering springs which maintain the tool positioned in the center of well pipe 10, slips 21 which hold the tool in a stationary position, and the movable milling section 22 of the tool which carries the milling blades 23 used to mill grooves 25 (see FIG. 3) or make cuts 25a (see FIG. 3A) in well pipe 10.
- the extension rod 24 allows milling section 22 to move upwardly and downwardly relative to the stationary slip portion of the tool in order to cut the grooves or openings in well pipe 10 adjacent formation 15.
- tool 13 is removed from the well pipe and an explosive charge is lowered on an electrical conductor type cable 31 to adjacent the weakened portion of the well pipe where the charge is detonated by means of an electrical charge transmitted through cable 31.
- FIG. 4 The results of exploding charge 30 are seen in FIG. 4.
- Well casing pipe 10 has ruptured along the weakened portions to form two half cylinders and two fractures, 32 and 33.
- the casing halves are forced apart past their yield points.
- the expanded casing halves permanently prop the fractures formed in formation 15.
- fractures 32 and 33 are filled with a conventional fracturing fluid containing a propping agent. These materials :may be pumped into the fractures after they lare formed by the explosive or they may be ⁇ forced into the fracture at the time -the fractures are created.
- a fracture fluid
- FIGS. 6 and 7 One design of a suitable combination tool for explosively weakening and expanding the Well pipe is shown in FIGS. 6 and 7.
- a at mandrel 35, pnovided with a peripheral groove 36 along its side fand lower edges is suspended in a well pipe 37 from an electrical conductor cable 38.
- An explosive cord such as primer cord 39 is connected at lone end to an ignition housing 40, -to which cable 38 also is connected, and is threaded about the periphery of mandrel in groove 36.
- the primer cord is then wrapped .about the center portion of mandrel 35 through openings 41 formed in the body thereof.
- primer cord 39 Upon firing of the ignition in housing through cab-le 38, primer cord 39 is ignited and the explosion of the primer cord in groove 36 causes the casing to split or weaken along .the primer oord path. Weakening of well pipe 37 ⁇ along these lines is then immediately followed by the casing forming charge explosion, which in this instance is the primer cord wrapped about the body of mandrel 35 through holes 41, but alternatively may be any high explosive. The forming charge forces the casing halves apart pa-st their yield point thereby creating and permanently propping with the expanded casing pipe a fracture in the formation. A well pipe expanded in this manner is seen in FIG. 9.
- FIG. 8 Another combination tool suitable for explosively weakening and expanding the well pipe is seen in FIG. 8.
- This tool includes an ignition housing 45 suspended from an electrical conductor cable 46 and a jet carrier bracket 47 containing aligned jet-shaped charges 48 surrounding and connected to a mandrel 49 secured to the ignition housing 45.
- Primer cord 50 leads from the ignition housing 45 .and is connected to each series of aligned jets 48 and then to more primer cord or other high explosive w-rapped about mandrel 49.
- This arrangement operates in a manner similar to the arrangement shown in FIGS. 6 and 7 .and the results are the same as those illustrated in FIG. 9.
- the primer cord is fired by the ignitor in the ignition housing 45 set off ⁇ by a signal through cable 46 which causes the series of jets 48 to first fire and weaken the casing after which the casing forming charge (the primer cord wrapped on mandrel 49) explodes to force the well pipe halves apar-t and to permanently prop with the expanded well pipe the fracture in the formation.
- weakening of the well Kpipe may be accomplished by penetrating the well pipe with a number of closely spaced, axially aligned bullets or shaped charges, or with linear-shaped explosives, or by exploding primer cord ⁇ or other high explosives near the we'll pipe wall.
- the mandrels used to hold the bullets or jets may be made of steel and be recoverable or they may be made of aluminum, glass or other expendable material.
- Tensile strength -of the formation is generally far 'less than compressive strength; hence, movement of the well pipe will crea-te tensile failure in 'fracture rather than cause crushing of the formation.
- the pipe will be permanently deformed and then will itself permanently prop open the fracture.
- this procedure may be accompanied or followed, if desired, by pumping sand or other propping material into the open fracture to extend the fracture and/or further support it by techniques well known in the art.
- the well pipe may be further supported internally in order to maintain the two half cylinders of well pipe separated and in the fracture mouth.
- a method of fracturing subsurface formations penetrated by a well bore containing a generally cylindrical well Ipi-pe comprising the steps of forcing apart two half cylinders of said well pipe :along a vertical section thereof adjacent a formation it is desired to 'fracture to prop open a vertical fracture formed in said formation.
- a method of fracturing subsurface formations penetrated hy a well bore containing a generally cylindrical well pipe comprising the steps of:
- Apparatus adapted to form a fracture in a subsurface formation and prop open the mouth of said fracture comprising:
- first explosive means arranged on said ymandrel capable of weakening said well pipe axially along two lines spaced approximately 180 from each other upon detonation thereof;
- Apparatus adapted to form a fracture in a subsurface formation and prop open the mouth of said fracture comprising:
- first explosive means arranged yin said well pipe adjacent said formation capable of weakening said lwell pipe axially along lines spaced from each other upon detonation thereof;
- second explosive means arranged in said well pipe adjacent said formation for forcing apart portions of said well pipe defined by said lines past their yield point to create and permanently prop with said expanded well pipe a fracture in said formation upon detonation thereof;
- explosive means arranged in said well pipe adjacent said formation for forcing apart well pipe halves defined by said two Elines past their yield point to create :and permanently prop with said expanded well pipe a fracture in said formation upon detonation thereof;
Description
@uw n n 3 w ms REFERENQ. SEARCHROUM Oct. 25, 1966 F. A. SMITH 3,280,913
VERTICAL FRACTURING PROCESS AND APPARATUS FOR WELLS Filed April 6, 1964 2 Sheets-Sheet l CEMENT SHEATH cENrERms f sPRlNssv.
ATTORNEY- l l BY f Fl cs.
Oct. 25, 1966 F. A. SMITH 3,280,913
VERTICAL FRACTURING PROCESS AND APPARATUS FOR WELLS ATTORNEY- United States Patent O 3,280,913 VERTICAL FRACTURING PROCESS AND APPARATUS FR WELLS Floyd A. Smith, Tulsa, kla., assigner, by mesne assignments, to Esso Production Research Company, Houston, Tex., a corporation of Delaware Filed Apr. 6, 1964, Ser. No. 357,604 9 Claims. (Cl. 16S-*35) The present invention relates to stimulating formations and, more particularly, to permanently propping the mouth of a vertical formation fracture.
Hydraulic fracturing processes, in which a fracturing .fluid is forced into a producing well in sufficient volume and under sucient pressure to rupture a subsurface formation, have found only limited use in the stimulation of damaged formations, particularly those which are relatively soft, because it has been diicult to permanently prop the portion of lthe fracture nearest the well bore (fracture mouth) penetrating the damaged formation.
The instant invention overcomes disadvantages in each hydraulic fracturing processes by causing the wall of the well casing pipe string, which is arranged in the well bore penetrating the formation to be stimulated, to rupture, expand, and permanently prop the mouth of a vertical fracture formed in said formation. The technique is useful in any type of formation.
Briefly, the invention resides in weakening the well pipe axially along two lines spaced approximately 180 from each other through the interval or formation to be stimulated mechanically, by milling or cutting, or explosively by use of directionally oriented explosive charges or radially directed jet charges or guns after which a well pipe or casing forming charge is detonated to force the well pipe halves defined by said spaced llines apart past their yield points, thereby creating and permanently propping with the expanded casing a fracture in the formation. Long intervals may be successfully fractured in this manner by leaving occasional spaces or blanks so that the expanded casing walls are provided ywith necessary support.
Thus, a primary object of this invention is to provide an improved well formation stimulation or fracturing technique.
This and other objects as well as advantages of the invention will be more apparent from a more detailed description thereof when taken with the drawings wherein:
FIG. 1 is a vertical, partly sectional view showing representative apparatus that may be used to weaken sections of the well pipe it is desi-red to rupture and expand;
FIG. 2 is a vertical, partly sectional view illustrating a further step; viz., the positioning of an explosive charge when the milling apparatus of FIG. 1 is used to weaken the well pipe;
FIG. 3 is a view taken along lines 3-3 of FIG. 2;
FIG. 3A is a plan view of the well pipe similar to that shown in FIG. 3 except the well pipe has been cut cornpletely through on each opposing side;
FIG. 4 is a plan view illustrating the appearance of the well pipe and formation fracture following detonation of the explosive charge of FIG. 2;
FIG. 5 is a plan view similar to that of FIG. 4 illustrating a further step permitted by this technique, that of moving fracture fluid containing propping agents into -the fracture that has been formed;
FIG. 6 is a vertical, partly sectional View of one type of combination tool which may be used for explosively weakening and expanding the well pipe;
FIG. 7 is a view taken along lines 77 of FIG. 6;
ICC
FIG. 8 is a vertical View of another type of combination ltool for explosively weakening and expanding the Well pipe; and
FIG. 9 is a plan view of the well pipe after expansion by the explosive elements of the tools of FIGS. 6 and 8.
A milling tool 13 is seen in FIG. 1 suspended in a well pipe :10 from a cable 14. It is positioned adjacent a formation or interval 15 which it is desired to fracture and which is penetrated by a well bore 411 in which is arranged well pipe 10. Tool 13 mills and weakens casing pipe 10 along two lines spaced approximately 180 from each other. The main' parts of the tool include centering springs which maintain the tool positioned in the center of well pipe 10, slips 21 which hold the tool in a stationary position, and the movable milling section 22 of the tool which carries the milling blades 23 used to mill grooves 25 (see FIG. 3) or make cuts 25a (see FIG. 3A) in well pipe 10. The extension rod 24 allows milling section 22 to move upwardly and downwardly relative to the stationary slip portion of the tool in order to cut the grooves or openings in well pipe 10 adjacent formation 15.
Once the grooves or cuts have been made in well pipe 10, tool 13 is removed from the well pipe and an explosive charge is lowered on an electrical conductor type cable 31 to adjacent the weakened portion of the well pipe where the charge is detonated by means of an electrical charge transmitted through cable 31.
The results of exploding charge 30 are seen in FIG. 4. Well casing pipe 10 has ruptured along the weakened portions to form two half cylinders and two fractures, 32 and 33. The casing halves are forced apart past their yield points. The expanded casing halves permanently prop the fractures formed in formation 15.
As seen in FIG. 5, fractures 32 and 33 are filled with a conventional fracturing fluid containing a propping agent. These materials :may be pumped into the fractures after they lare formed by the explosive or they may be `forced into the fracture at the time -the fractures are created. The use of a fracture fluid, |with or without a propping agent, is an opt-ional procedure dependent upon the need for such treatment with any particular formation.
The explo-sive technique to be described with regard to FIGS. 6 to 9 for weakening the well pipe along the two, spaced-apart lines is preferred over the technique for weakening the well pip-e just described in which a milling tool or other cutting means is fused.
One design of a suitable combination tool for explosively weakening and expanding the Well pipe is shown in FIGS. 6 and 7. A at mandrel 35, pnovided with a peripheral groove 36 along its side fand lower edges is suspended in a well pipe 37 from an electrical conductor cable 38. An explosive cord such as primer cord 39 is connected at lone end to an ignition housing 40, -to which cable 38 also is connected, and is threaded about the periphery of mandrel in groove 36. The primer cord is then wrapped .about the center portion of mandrel 35 through openings 41 formed in the body thereof. Upon firing of the ignition in housing through cab-le 38, primer cord 39 is ignited and the explosion of the primer cord in groove 36 causes the casing to split or weaken along .the primer oord path. Weakening of well pipe 37 `along these lines is then immediately followed by the casing forming charge explosion, which in this instance is the primer cord wrapped about the body of mandrel 35 through holes 41, but alternatively may be any high explosive. The forming charge forces the casing halves apart pa-st their yield point thereby creating and permanently propping with the expanded casing pipe a fracture in the formation. A well pipe expanded in this manner is seen in FIG. 9.
Another combination tool suitable for explosively weakening and expanding the well pipe is seen in FIG. 8. This tool includes an ignition housing 45 suspended from an electrical conductor cable 46 and a jet carrier bracket 47 containing aligned jet-shaped charges 48 surrounding and connected to a mandrel 49 secured to the ignition housing 45. Primer cord 50 leads from the ignition housing 45 .and is connected to each series of aligned jets 48 and then to more primer cord or other high explosive w-rapped about mandrel 49. This arrangement operates in a manner similar to the arrangement shown in FIGS. 6 and 7 .and the results are the same as those illustrated in FIG. 9. The primer cord is fired by the ignitor in the ignition housing 45 set off `by a signal through cable 46 which causes the series of jets 48 to first fire and weaken the casing after which the casing forming charge (the primer cord wrapped on mandrel 49) explodes to force the well pipe halves apar-t and to permanently prop with the expanded well pipe the fracture in the formation.
Thus, as shown, weakening of the well Kpipe may be accomplished by penetrating the well pipe with a number of closely spaced, axially aligned bullets or shaped charges, or with linear-shaped explosives, or by exploding primer cord `or other high explosives near the we'll pipe wall. The mandrels used to hold the bullets or jets may be made of steel and be recoverable or they may be made of aluminum, glass or other expendable material.
Tensile strength -of the formation is generally far 'less than compressive strength; hence, movement of the well pipe will crea-te tensile failure in 'fracture rather than cause crushing of the formation. Once the radial stress of the well pipe exceeds its yield, the pipe will be permanently deformed and then will itself permanently prop open the fracture. As mentioned previously, this procedure may be accompanied or followed, if desired, by pumping sand or other propping material into the open fracture to extend the fracture and/or further support it by techniques well known in the art. Also, if necessary, the well pipe may be further supported internally in order to maintain the two half cylinders of well pipe separated and in the fracture mouth.
Having fully described the method, apparatus, objects, and .advantages of my invention, I claim:
1. A method of fracturing subsurface formations penetrated by a well bore containing a generally cylindrical well Ipi-pe comprising the steps of forcing apart two half cylinders of said well pipe :along a vertical section thereof adjacent a formation it is desired to 'fracture to prop open a vertical fracture formed in said formation.
2. A method of fracturing subsurface formations penetrated hy a well bore containing a generally cylindrical well pipe comprising the steps of:
weakening said well pipe axially along two lines spaced approximately 180 from each other through the formation to ybe fractured; .and
then explosively forcing apart said two half cylinders of said well pipe defined by said weakened well pipe lines to deform said well pipe halves past their yield points creating and permanently propping with said expanded well pipe a fracture in said formation.
3. A method as recited in claim 2 in which said well pipe is explosively weakened.
4. A method as recited in claim 2 in which said well pipe is mechanically weakened.
5. A method as recited in claim 2 in which a liquid containing propping material is pumped into said formation fracture.
6. Apparatus adapted to form a fracture in a subsurface formation and prop open the mouth of said fracture comprising:
,a generally cylindrical well pipe penetrating said formation to be fractured;
a mandrel suspended from an electrical conductor cable in said well pipe adjacent said formation;
first explosive means arranged on said ymandrel capable of weakening said well pipe axially along two lines spaced approximately 180 from each other upon detonation thereof;
`second explosive means for forcing apart well pipe halves defined by said two `lines past their yield point to create and permanently .prop with said expanded wel-l pipe a fracture in said formation upon detonation thereof; and
means for detonating said first and second explosive means.
7. Apparatus adapted to form a fracture in a subsurface formation and prop open the mouth of said fracture comprising:
a generally cylindrical well pipe penetrating said formation to be fractured;
first explosive means arranged yin said well pipe adjacent said formation capable of weakening said lwell pipe axially along lines spaced from each other upon detonation thereof;
second explosive means arranged in said well pipe adjacent said formation for forcing apart portions of said well pipe defined by said lines past their yield point to create and permanently prop with said expanded well pipe a fracture in said formation upon detonation thereof; and
means for detonating said first and second explosive means.
S. Apparatus adapted to form a fracture in a Isubsurface formation and p-rop open the mouth of said fracture comprising:
`a well pipe penetrating said formation to be fractured;
means arranged in said well pipe adjacent said formation capable of weakening said well pipe axially along two lines spaced approximately 180 from each other;
explosive means arranged in said well pipe adjacent said formation for forcing apart well pipe halves defined by said two Elines past their yield point to create :and permanently prop with said expanded well pipe a fracture in said formation upon detonation thereof;
means for actuating said well pipe weakening means;
and
means for detonating said explosive means.
9. Apparatus as recited in claim 8 wherein said well pipe weakening means comprises explosive means.
References Cited by the Examiner UNITED STATES PATENTS 2,587,244 2/1952 Sweetman 166-63 X 2,642,142 6/ 1953 Clark.
2,952,319 9/1960 Popham 166-35 6r 3,174,545 3/1965 Mohaupt 166-36 JACOB L. NACKENOFF, Primary Examiner.
CHARLES E. OCONNELL, Examiner.
D, H. BROWN, Assistant Examiner,
Claims (1)
1. A METHOD OF FRACTURING SUBSURFACE FORMATIONS PENETRATED BY A WELL BORE CONTAINING A GENERALLY CYLINDRICAL WELL PIPE COMPRISING THE STEPS OF FORCING APART TWO HALF CYLINDERS OF SAID WELL PIPE ALONG A VERTICAL SECTION THEREOF ADJACENT A FORMATION IT IS DESIRED TO FRACTURE TO PROP OPEN A VERTICAL FRACTURE FORMED IN SAID FORMATION.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US357604A US3280913A (en) | 1964-04-06 | 1964-04-06 | Vertical fracturing process and apparatus for wells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US357604A US3280913A (en) | 1964-04-06 | 1964-04-06 | Vertical fracturing process and apparatus for wells |
Publications (1)
Publication Number | Publication Date |
---|---|
US3280913A true US3280913A (en) | 1966-10-25 |
Family
ID=23406299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US357604A Expired - Lifetime US3280913A (en) | 1964-04-06 | 1964-04-06 | Vertical fracturing process and apparatus for wells |
Country Status (1)
Country | Link |
---|---|
US (1) | US3280913A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4119151A (en) * | 1977-02-25 | 1978-10-10 | Homco International, Inc. | Casing slotter |
US4346761A (en) * | 1980-02-25 | 1982-08-31 | Halliburton Company | Hydra-jet slotting tool |
US4662451A (en) * | 1985-06-07 | 1987-05-05 | Phillips Petroleum Company | Method of fracturing subsurface formations |
US4669546A (en) * | 1986-01-03 | 1987-06-02 | Mobil Oil Corporation | Method to improve vertical hydraulic fracturing in inclined wellbores |
US5111885A (en) * | 1990-10-17 | 1992-05-12 | Directional Wireline Service, Inc. | Decentralized casing hole puncher |
US5458196A (en) * | 1994-08-31 | 1995-10-17 | Halliburton Company | Through tubing gun hanger |
US5564499A (en) * | 1995-04-07 | 1996-10-15 | Willis; Roger B. | Method and device for slotting well casing and scoring surrounding rock to facilitate hydraulic fractures |
WO1999057409A2 (en) * | 1998-05-04 | 1999-11-11 | Norse Cutting & Abandonment As | A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
WO2000029716A3 (en) * | 1998-11-17 | 2000-11-16 | Golder Sierra Llc | Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
US20090032267A1 (en) * | 2007-08-01 | 2009-02-05 | Cavender Travis W | Flow control for increased permeability planes in unconsolidated formations |
US20090032260A1 (en) * | 2007-08-01 | 2009-02-05 | Schultz Roger L | Injection plane initiation in a well |
US20090101347A1 (en) * | 2006-02-27 | 2009-04-23 | Schultz Roger L | Thermal recovery of shallow bitumen through increased permeability inclusions |
US20090166040A1 (en) * | 2007-12-28 | 2009-07-02 | Halliburton Energy Services, Inc. | Casing deformation and control for inclusion propagation |
EP2092156A2 (en) * | 2006-12-14 | 2009-08-26 | Halliburton Energy Services, Inc. | Casing expansion and formation compression for permeability plane orientation |
US7647966B2 (en) | 2007-08-01 | 2010-01-19 | Halliburton Energy Services, Inc. | Method for drainage of heavy oil reservoir via horizontal wellbore |
US8955585B2 (en) | 2011-09-27 | 2015-02-17 | Halliburton Energy Services, Inc. | Forming inclusions in selected azimuthal orientations from a casing section |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2587244A (en) * | 1946-11-12 | 1952-02-26 | I J Mccullough | Apparatus for cutting pipes within a well |
US2642142A (en) * | 1949-04-20 | 1953-06-16 | Stanolind Oil & Gas Co | Hydraulic completion of wells |
US2952319A (en) * | 1956-06-25 | 1960-09-13 | Continental Oil Co | Method of verttcally fracturing cased wells |
US3174545A (en) * | 1958-01-13 | 1965-03-23 | Petroleum Tool Res Inc | Method of stimulating well production by explosive-induced hydraulic fracturing of productive formation |
-
1964
- 1964-04-06 US US357604A patent/US3280913A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2587244A (en) * | 1946-11-12 | 1952-02-26 | I J Mccullough | Apparatus for cutting pipes within a well |
US2642142A (en) * | 1949-04-20 | 1953-06-16 | Stanolind Oil & Gas Co | Hydraulic completion of wells |
US2952319A (en) * | 1956-06-25 | 1960-09-13 | Continental Oil Co | Method of verttcally fracturing cased wells |
US3174545A (en) * | 1958-01-13 | 1965-03-23 | Petroleum Tool Res Inc | Method of stimulating well production by explosive-induced hydraulic fracturing of productive formation |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4119151A (en) * | 1977-02-25 | 1978-10-10 | Homco International, Inc. | Casing slotter |
US4346761A (en) * | 1980-02-25 | 1982-08-31 | Halliburton Company | Hydra-jet slotting tool |
US4662451A (en) * | 1985-06-07 | 1987-05-05 | Phillips Petroleum Company | Method of fracturing subsurface formations |
US4669546A (en) * | 1986-01-03 | 1987-06-02 | Mobil Oil Corporation | Method to improve vertical hydraulic fracturing in inclined wellbores |
US5111885A (en) * | 1990-10-17 | 1992-05-12 | Directional Wireline Service, Inc. | Decentralized casing hole puncher |
US5458196A (en) * | 1994-08-31 | 1995-10-17 | Halliburton Company | Through tubing gun hanger |
US5564499A (en) * | 1995-04-07 | 1996-10-15 | Willis; Roger B. | Method and device for slotting well casing and scoring surrounding rock to facilitate hydraulic fractures |
WO1999057409A3 (en) * | 1998-05-04 | 2000-04-06 | Superior P & A A S | A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
US6478088B1 (en) | 1998-05-04 | 2002-11-12 | Norse Cutting & Abandonment A/S | Method for the formation of a plug in a petroleum well |
WO1999057409A2 (en) * | 1998-05-04 | 1999-11-11 | Norse Cutting & Abandonment As | A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
WO2000029716A3 (en) * | 1998-11-17 | 2000-11-16 | Golder Sierra Llc | Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
US6216783B1 (en) * | 1998-11-17 | 2001-04-17 | Golder Sierra, Llc | Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
US6443227B1 (en) * | 1998-11-17 | 2002-09-03 | Golder Sierra Llc | Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
US8863840B2 (en) | 2006-02-27 | 2014-10-21 | Halliburton Energy Services, Inc. | Thermal recovery of shallow bitumen through increased permeability inclusions |
US8151874B2 (en) | 2006-02-27 | 2012-04-10 | Halliburton Energy Services, Inc. | Thermal recovery of shallow bitumen through increased permeability inclusions |
US20090101347A1 (en) * | 2006-02-27 | 2009-04-23 | Schultz Roger L | Thermal recovery of shallow bitumen through increased permeability inclusions |
EP2092156A4 (en) * | 2006-12-14 | 2014-07-02 | Halliburton Energy Serv Inc | Casing expansion and formation compression for permeability plane orientation |
EP2092156A2 (en) * | 2006-12-14 | 2009-08-26 | Halliburton Energy Services, Inc. | Casing expansion and formation compression for permeability plane orientation |
US7814978B2 (en) | 2006-12-14 | 2010-10-19 | Halliburton Energy Services, Inc. | Casing expansion and formation compression for permeability plane orientation |
US20090032260A1 (en) * | 2007-08-01 | 2009-02-05 | Schultz Roger L | Injection plane initiation in a well |
US7647966B2 (en) | 2007-08-01 | 2010-01-19 | Halliburton Energy Services, Inc. | Method for drainage of heavy oil reservoir via horizontal wellbore |
US20100071900A1 (en) * | 2007-08-01 | 2010-03-25 | Halliburton Energy Services, Inc. | Drainage of heavy oil reservoir via horizontal wellbore |
US7640982B2 (en) | 2007-08-01 | 2010-01-05 | Halliburton Energy Services, Inc. | Method of injection plane initiation in a well |
US7640975B2 (en) | 2007-08-01 | 2010-01-05 | Halliburton Energy Services, Inc. | Flow control for increased permeability planes in unconsolidated formations |
US8122953B2 (en) | 2007-08-01 | 2012-02-28 | Halliburton Energy Services, Inc. | Drainage of heavy oil reservoir via horizontal wellbore |
US7918269B2 (en) | 2007-08-01 | 2011-04-05 | Halliburton Energy Services, Inc. | Drainage of heavy oil reservoir via horizontal wellbore |
US20090032267A1 (en) * | 2007-08-01 | 2009-02-05 | Cavender Travis W | Flow control for increased permeability planes in unconsolidated formations |
US20110139444A1 (en) * | 2007-08-01 | 2011-06-16 | Halliburton Energy Services, Inc. | Drainage of heavy oil reservoir via horizontal wellbore |
US20090166040A1 (en) * | 2007-12-28 | 2009-07-02 | Halliburton Energy Services, Inc. | Casing deformation and control for inclusion propagation |
US7950456B2 (en) | 2007-12-28 | 2011-05-31 | Halliburton Energy Services, Inc. | Casing deformation and control for inclusion propagation |
US7832477B2 (en) | 2007-12-28 | 2010-11-16 | Halliburton Energy Services, Inc. | Casing deformation and control for inclusion propagation |
US20100252261A1 (en) * | 2007-12-28 | 2010-10-07 | Halliburton Energy Services, Inc. | Casing deformation and control for inclusion propagation |
US8955585B2 (en) | 2011-09-27 | 2015-02-17 | Halliburton Energy Services, Inc. | Forming inclusions in selected azimuthal orientations from a casing section |
US10119356B2 (en) | 2011-09-27 | 2018-11-06 | Halliburton Energy Services, Inc. | Forming inclusions in selected azimuthal orientations from a casing section |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11719078B2 (en) | Directly initiated addressable power charge | |
US3280913A (en) | Vertical fracturing process and apparatus for wells | |
US20210285299A1 (en) | Compact Setting Tool | |
CA1239867A (en) | Well treating method and system for stimulating recovery of fluids | |
US6263283B1 (en) | Apparatus and method for generating seismic energy in subterranean formations | |
EP0925423B1 (en) | Apparatus and method for perforating and stimulating a subterranean formation | |
US4683943A (en) | Well treating system for stimulating recovery of fluids | |
CA2320720C (en) | Apparatus and method for stimulating a subterranean formation | |
EP2401474B1 (en) | Novel device and methods for firing perforating guns | |
US4823875A (en) | Well treating method and system for stimulating recovery of fluids | |
US4329925A (en) | Fracturing apparatus | |
US4018293A (en) | Method and apparatus for controlled fracturing of subterranean formations | |
EP1875040B1 (en) | Stimulation tool having a sealed ignition system | |
US20060021748A1 (en) | Sealing plug and method for removing same from a well | |
US11143007B2 (en) | Method and systems for perforating and fragmenting sediments using blasting material | |
US2892405A (en) | Fracturing formations in wells | |
US4903772A (en) | Method of fracturing a geological formation | |
US3185224A (en) | Apparatus for drilling boreholes | |
WO2020139459A2 (en) | Expanding sleeve for isolation | |
US3630281A (en) | Explosive fracturing of petroleum bearing formations | |
US4513665A (en) | Method for loading explosive charges into blastholes formed in a subterranean formation | |
US3026936A (en) | Method of completing wells | |
US2986089A (en) | Debris-free perforating gun | |
US3491841A (en) | Method and apparatus for the explosive drilling of boreholes | |
US4045085A (en) | Fracturing of pillars for enhancing recovery of oil from in situ oil shale retort |