CN102741498B - For a kind of system and method for direct-driven pump - Google Patents
For a kind of system and method for direct-driven pump Download PDFInfo
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- CN102741498B CN102741498B CN201080034115.2A CN201080034115A CN102741498B CN 102741498 B CN102741498 B CN 102741498B CN 201080034115 A CN201080034115 A CN 201080034115A CN 102741498 B CN102741498 B CN 102741498B
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- Prior art keywords
- pump
- drive rod
- driving tube
- bearing
- driving
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 45
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 239000003381 stabilizer Substances 0.000 claims description 32
- 239000000314 lubricant Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 44
- 238000005086 pumping Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 239000007788 liquid Substances 0.000 description 11
- 238000005461 lubrication Methods 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 241000628997 Flos Species 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000254175 Anthonomus grandis Species 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
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- 239000000806 elastomer Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
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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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
A kind of system and method for fluid and/or quasi-fluid are pumped into the direct-driven pump of another position from a position is provided. In this direct-driven pump, consider different operation factors as load, path, pressure and tension force and optionally by spaced apart to multiple bearings or axle bush. Further, multiple bearings or axle bush are connected in this drive post, therefore contribute to more effective installation and removal. These bearings or axle bush are not fixed on production casing or driving tube. In multiple embodiments, this driving tube can be by perforate, and can produce a kind of lubricant of fluid as these system bearings.
Description
Invention field
The present invention relates to a kind of system and method for a kind of direct-driven pump, this system and method is used to mobile manyPlant liquid and/or quasi-liquid. The invention still further relates to a kind of system and method for a direct-driven pump is installed, this directly drivesMoving pump is for example for high volume being promoted from deep-well.
Background
The current system for deep-well pumping relates to electronic submersible pump (" ESP ") or gear centrifugal pump (" GSP "). Like thisPump is the main method that is used as at present the artificial lifting in two-forty oil well, and one of them centrifugal multistage pump multiple centrifugal pump is positioned at down-hole. For example,In a kind of ESP system, a downhole electric machine directly drives pump, and its electrical power is by extending to motor from surfaceDown well placement cable and be supplied to motor. For example, in a kind of GSP system, pump is by extending to and be positioned at from surfaceA rotation roofbolt (rodstring) of a speedup transmission system of down-hole drives. This speedup transmission system is used for willThis roofbolt increases to the needed faster rotation of a kind of pump relative to slow rotating. In this example, this roofbolt be byDrive at prime mover of surface.
In current system, it is some trouble that this artificial lift system is tended to. For example,, in artificial lifting at presentIn the installation of system, the manual pumps of 300 to 400 feet is installed in kit form in the section of multiple 10 feet. WithSample in the maintenance of a particular section of pipeline or pipeline, must once remove whole before can carrying out any maintenanceThe pump of section.
Figure 1A and Figure 1B show exemplary bobbin pump. Figure 1A shows a kind of bobbin of the bearing with water lubricationPump. In Figure 1A, this driving shaft directly extends in production pipeline or column jecket. Different from example shown in Figure 1B, this pump is notUse oil pipe. Alternatively, in Figure 1A, driving shaft is protected by the bearing of multiple water lubrications and the multiple bearings that are attached on column jecketHold device and be positioned at the center of this column jecket. Owing to using in water, kind of bearings is made up of rubber typically. The thrust of this pump connectsWeight with this driving shaft itself is supported by the thrust bearing that is positioned at surface.
Figure 1B shows a kind of bobbin pump of the bearing with an oil pipe and multiple oil lubrications. In Figure 1B, an oilLubricated driving shaft rotates in this oil pipe or the oily tubular shell being full of. This driving shaft is by being attached at regularly on oil pipeBearing supports, for example bronze bushes. Depend on the expection rotating speed of this driving shaft, these axle bushes on yhr oil pipe and alongSpaced apart for example 5 feet to 10 feet of this driving shaft. In this example, the pump shaft of this steel has formed the axle of bronze bushesNeck. The thrust of this pump is supported by the thrust bearing of surface together with the weight of this driving shaft itself. Therefore, this oil pipe can lead toCross along the even isolated elastomer centralizer of its length and in this column jecket, be positioned at center, as shown in Figure 1B.
In Figure 1A and Figure 1B, there is the bearing interval of a requirement in order suitably to support this driving shaft. Such intervalThe configuration of the tubular piece that impact is used in installation. For example,, in the system of the water lubrication shown in Figure 1A, if these driving shaftsBearing is needed as every 10 feet one, and the column jecket that used is into the section of 10 feet. These bearing cages are at theseColumn jecket junction is fixed on this column jecket. For example,, in the system of the oil lubrication shown in Figure 1B, if these driving shaft bearing quiltsRequire as every 10 feet one, the oil pipe that used is into the section of 10 feet. These axle bushes are solid in these housing junctionsFix on this drive shaft shell. In these two examples, these pumping systems can be installed in a similar fashion. For example, ifThis bearing interval is considered to 10 feet, and all component including this column jecket, oil pipe and driving shaft is intoLength is the section of 10 feet. Therefore, in the time that this pump is delegated in well, these driving shafts, bearing and column jecket or oil pipeEach in 10 feet of sections must be installed in the section of multiple 10 feet.
Therefore, just exist and need to carry out not install more troublesomely, dismantle and keep in repair pumping system, for oil and water lubrication system twoPerson.
Brief Description Of Drawings
Figure 1A shows a kind of bobbin pump of the bearing with water lubrication.
Figure 1B shows a kind of bobbin pump of the bearing with oil lubrication.
Fig. 2 shows an exemplary enforcement side of described according to an embodiment of the invention a kind of direct-driven pumpCase.
Fig. 3 shows an example of described according to an embodiment of the invention a kind of drive rod with driving tubeProperty embodiment.
Fig. 4 shows of according to an embodiment of the invention described a kind of drive rod without driving tube and showsExample embodiment.
Fig. 5 A shows for a stabilizer of described according to an embodiment of the invention direct-driven pump and implementsThe sectional view of scheme.
Fig. 5 B shows shown in Fig. 5 A one for described according to an embodiment of the invention direct-driven pumpThe top view of stabilizer embodiment.
Fig. 5 C shows shown in Fig. 5 A one for described according to an embodiment of the invention direct-driven pumpThe front view of stabilizer embodiment.
Fig. 6 A shows for a stabilizer of described according to an embodiment of the invention direct-driven pump and implementsThe sectional view of scheme.
Fig. 6 B shows shown in Fig. 6 A one for described according to an embodiment of the invention direct-driven pumpThe top view of stabilizer embodiment.
Fig. 6 C shows shown in Fig. 6 A one for described according to an embodiment of the invention direct-driven pumpThe front view of stabilizer embodiment.
Fig. 7 A shows for a stabilizer of described according to an embodiment of the invention direct-driven pump and implementsThe sectional view of scheme.
Fig. 7 B shows shown in Fig. 7 A one for described according to an embodiment of the invention direct-driven pumpThe top view of stabilizer embodiment.
Fig. 7 C shows shown in Fig. 7 A one for described according to an embodiment of the invention direct-driven pumpThe front view of stabilizer embodiment.
Fig. 8 A shows for a stabilizer of described according to an embodiment of the invention direct-driven pump and implementsThe sectional view of scheme.
Fig. 8 B shows shown in Fig. 8 A one for described according to an embodiment of the invention direct-driven pumpThe top view of stabilizer embodiment.
Fig. 8 C shows shown in Fig. 8 A one for described according to an embodiment of the invention direct-driven pumpThe front view of stabilizer embodiment.
Fig. 9 A shows for a stabilizer of described according to an embodiment of the invention direct-driven pump and implementsThe sectional view of scheme.
Fig. 9 B shows shown in Fig. 9 A one for described according to an embodiment of the invention direct-driven pumpThe top view of stabilizer embodiment.
Fig. 9 C shows shown in Fig. 9 A one for described according to an embodiment of the invention direct-driven pumpThe front view of stabilizer embodiment.
Figure 10 shows a reality according to a kind of direct-driven pump bottom hole assembly with driving tube of the present inventionExecute scheme.
Figure 11 shows according to one of a kind of direct-driven pump bottom hole assembly without driving tube of the present inventionEmbodiment.
Figure 12 shows according to the driving tube of a kind of top drilling of the present invention embodiment.
Figure 13 shows according to of the present invention a kind of for the illustrative methods of direct-driven pump is installed.
Describe in detail
Embodiment of the present invention provide a kind of easier to mount and people maintenance, that use in oil and water pump systemWork elevator pump. Or rather, embodiment of the present invention can be for the deep-well pumping of oil, water or other fluid/quasi-fluids.
Embodiment of the present invention provide a kind of deep well pump system, this system allow with current pumping system compared withCan use at larger depth and/or with larger rotating speed. For example, it is that diameter is larger that well tends to, for example 10Inch is to being greater than 16 inches. Therefore, the agriculture centrifugal pump can be used in well requires large diameter pump rotor, and this has caused every gradeThe increase greatly of pressure. , every stage pressure and root diameter square and rotating speed square be proportional. Given waterThis large diameter of well and the typically shallow degree of depth, well turbine pump is typically with between about 1200RPM and 1800RPMSpeed operation. Comparatively speaking, oil well trends towards using the life that the internal diameter of approximately 5.5 inches or 7 inches is approximately 4.6 inches to 6 inchesProduce sleeve pipe. Therefore, obtainable centrifugal pump requires the pump rotor of minor diameter, thereby the little increase of every stage pressure is provided. ThisThe little increase of planting every stage pressure causes this pump for example, to move with high speed (about 3500RPM). Even in high like this speedUnder, due to the typically dark degree of depth of this little increase of every stage pressure and oil well, in order to take the fluid of generation to tableThe position of face or other hope may require nearly 250 or more level. If this type of pump of producing for oil is at agricultural pumpThe lower operation of typical rate (for example, for well), for the position of the fluid of generation being taken to surface or other hope possiblyAsk approximately 1000 grades or more, this is by unreachable height ground costliness and will have very galling in this system. Of the present invention multipleIn embodiment, this type of limiting factor and the expense of agricultural pump and oil pump systems are alleviated or are reduced.
Embodiment of the present invention provide a kind of installation of pump, passable compared with wherein allowing with current pumping systemThe pump of larger section is installed. For example,, in agricultural pump and oil pump, by being fixed on tubular driving shat housing (being oil pipe) or column jecketBearing stablize this driving shaft. Making each in these sections is equal length, makes like this pump be installed to wellWhen middle, bearing can be fixed on column jecket or oil pipe in the connection place of these area under control sections. At a kind of bearing arrangement of oil lubricationIn, bronze bushes is attached on these oil pipes, and one of them firm matter driving shaft has formed axle journal. At a kind of bearing of water lubricationIn system, rubber shaft bearing is remained on to column jecket center with bearing cage. This driving shaft extends through this rubber shaft bearing and dressThere is a stainless steel sleeve pipe as axle journal. For example, in agricultural pump (water pump) and oil pump systems, bearing is separately fixed at postOn pipe or oil pipe. Therefore, as discussed above, it is (every that the installation requirement of this type of obtainable system is assembled multiple pumping system sectionsIndividual 10 feet). Embodiment of the present invention for example provide, to larger pumping system section (25 feet of sections, 60 feet of sections and moreMany) installation.
Embodiment of the present invention provide a kind of artificial lift system of high volume, i.e. direct-driven pump (" DDP "), itsIn drive a multi-level downhole centrifugal pump by a roofbolt that extends to down-hole pump from surface. This roofbolt on surface (for exampleEarth's surface height) locate for example, to be driven by prime mover (motor). For example, this electronic function is with the pump work speed of 3500RPMDegree drives this roofbolt. In embodiments of the invention, this speed can reduce or increase, and this depends on required feelingsCondition.
Embodiment of the present invention provide closely isolated bearing that this drive post (drivestring) is providedRotational stabilization. In one embodiment, these independent bearings are attached in this drive post and are not fixed to lifeProduce on sleeve pipe or driving tube.
Fig. 2 shows a kind of direct-driven pump according to the present invention and send an embodiment of system 220. In Fig. 2, aobviousShow that a motor 200 is connected to the residue of this pump by multiple boll-weevil hangers and at least one thrust bearing 201On element. In one embodiment, motor 200 is motor that drive this roofbolt with whole pump speed. Alternatively,Motor 200 is the direct drive motor so that for example 3500RPM rotates. Alternatively, this motor 200 has low outputRPM, lower than 3500RPM, but has the gear drive of speedup ability that is. In this embodiment, by being positioned at pump and being connected toPressure regulator 202 between the flowline 203 of pump is monitored the pressure of this pumping system. When this driving tube and this production pipelineBetween pressure reduction while exceeding a predetermined setting value this pressure regulator 202 open. A well head 204 is connected to casingThe top of this pumping system, this pumping system comprises motor 200 and flowline 203. In protectiveness casing 205 inside, have oneIndividual production pipeline or pipeline 207 and held a drive rod 206. The bottom of this pumping system comprises a receiving element and oneIndividual or multiple thrust bearings 208. In one embodiment, the thrust bearing 208 that has supported the weight of these drive rods is positioned atIn this surface drive head (drivehead). Due to high rotating speed, roofbolt 206 is equipped with along the whole length of roofbolt closelyIsolated multiple stabilizer or bearing are to guarantee stable rotation. Show some example enforcement sides of this type of stabilizer at thisCase. Perforation 209 in well housing in oil-producing formation 212 regions (, the place at water or oil and other liquid/quasi-liquid places) is permittedPerhaps this liquid or quasi-liquid enter in casing and carry out pumping until surface for the pump 210 by having a pump intake 211Or the position of other hope.
Fig. 3 shows according to an embodiment of the invention one of described a kind of drive rod 304 with driving tube 301Individual embodiment. For example, in larger sized production pipeline, drive rod 304 and stabilizer 305 are being called as driving tubeIn the tubular shell of a minor diameter of 301, rotate. Driving tube 301 is being produced the inner extension of pipeline 302. In order to stablize this drivingPipe 301, driving tube stabilizer 303 is spaced apart between production pipeline 302 and driving tube 301. Driving tube 301 itself itIn, drive rod 304 is supported on driving tube 301 by multiple drive rod stabilizers 305.
Fig. 4 shows a drive rod 402 and is directly wrapped in an embodiment of producing in pipeline 401. Like thisSituation under, drive rod 402 is supported to and is produced on pipeline 401 by multiple drive rod stabilizers 403. Such embodimentCan in the case of the production pipeline of small diameter, use, be wherein not enough to and/or do not need a driving tube.
Fig. 5, Fig. 6 and Fig. 7 show for real according to a kind of direct-driven pump of driving tube that do not use of the present inventionExecute multiple embodiments of bearing assembly or the stabilizer of scheme. Among each embodiment in these embodiments,Bearing assembly comprises and is attached at an axle bush on the body of rod, one of them bearing be arranged on a housing (for example, a kind of plastics orThe housing of other types) in, the internal diameter of this housing and this production pipeline closely cooperates. This housing, therefore also have this bearing, stillFix with respect to this pipeline, wherein this roofbolt rotates in this bearing. Fig. 5 shows a kind of pottery-polymer alloy axleThe example embodiment of holding. In Fig. 5 A, polymeric shells and bearing 500 are positioned near a ceramic axle bush 501, this potteryPorcelain axle bush 501 is positioned on this drive rod 502. In Fig. 5 B, show this polymeric shells and bearing 500 around this pottery axle bush501. Can obtain the flow region of a generation in polymeric shells 500 outsides. In Fig. 5 C, just showing one of this assemblyView, wherein, producing pipeline 503 inside, has used a clamping band 504 to keep this around a portion of drive rod 502This housing 500 dividing.
Fig. 6 shows a kind of example embodiment of non-aggressive bearing. In Fig. 6 A, polymeric shells and bearing600 are for example positioned at, near a molded stop member 601 (a molded plastics stop member), and this molded stop member 601 is positioned at thisOn drive rod 602. In Fig. 6 B, show this polymeric shells and bearing 600 around this this drive rod 602. At polymer shellBody 600 outsides can obtain the flow region of a generation. In Fig. 6 C, show a front view of this assembly, wherein giving birth toProduce pipeline 603 inside, used a clamping band 604 to keep this around this housing of a part of drive rod 602600。
A
Fig. 7 shows a kind of example embodiment of ceramic bearing. In Fig. 7 A, 700, plastic casing and bearingNear a ceramic axle bush 701, this pottery axle bush 701 is positioned on this drive rod 702. In Fig. 7 B, show this plastic housingBody and bearing 700 are around this ceramic axle bush 701. Can obtain the flow region of a generation in plastic casing 700 outsides. At figureIn 7C, show a front view of this assembly, wherein, producing pipeline 703 inside, used a clamping band 704 to keepShould be around this housing 700 of a part of drive rod 702.
In multiple embodiments of the present invention, the bearing material that use depends on that the place, position of bearings in well is pre-The wearing and tearing of phase and lateral load. For example, have the place of high lateral load expecting due to wellhole deviation, can use potteryPorcelain or the bearing of carbide even. Or for example, have the place of little side load in expection, can use simplerAnd more cheap polymer alloy bearing. This bear box material can be plastics, nylon, polymer alloy, or some itsHis brute force, chemically inert material.
In multiple embodiments of the present invention, can use dissimilar bearing. Can be according to load, the pump of expectionThe use of the degree of depth, driving tube and other Considerations determine and use which kind of bearing type. In Fig. 5 to 9, these axlesHold and around bear box, provide the mobile aspect of fluid not identical. For example, in the time not using driving tube, these bearings are exposed toProduce in fluid stream, therefore should be by the region maximum of opening for flowing between bear box and production insides of pipesChange to reduce the pressure loss in the time that fluid is flowed through these bearings. For example see Fig. 5 to Fig. 7. Or for example, using drivingGuan Shi, the fluid in this pipe is almost motionless, and these bear boxes only need to carry out sufficiently cutting and pass through to allowWear the low rate circulation of this drive post. For example see Fig. 8 and Fig. 9.
Fig. 8 and 9 shows for according to a kind of direct-driven pump embodiment with driving tube of the present inventionThe embodiment of multiple bearing assemblies or stabilizer. Among each embodiment in these embodiments, bearing assemblyComprise and be attached at an axle bush on the body of rod, one of them bearing is arranged on a housing (for example, a kind of plastics or other typesHousing) in, the internal diameter of this housing and this driving tube housing closely cooperates. This housing, therefore also have this bearing, still in phaseFix for this driving tube housing, wherein this roofbolt rotates in this bearing.
Fig. 8 shows a kind of example embodiment of pottery-polymer alloy bearing. In Fig. 8 A, a polymer shellBody and bearing 800 are positioned near a ceramic axle bush 801, and this pottery axle bush 801 is positioned on this drive rod 802. A driving tube805 around this assembly. In Fig. 8 B, produce pipeline 803 around driving tube 805, this driving tube is around this bearing assembly.In Fig. 8 C, show a front view of this assembly, wherein, in driving tube 805, use a clamping band 804 to keepShould be around this housing 800 of a part of drive rod 802.
Fig. 9 shows a kind of example embodiment of ceramic bearing. In Fig. 9 A, 900, plastic casing and bearingNear a ceramic axle bush 901, this pottery axle bush or bearing 901 are positioned on this drive rod 902. Driving tube 905 aroundThis bearing assembly. In Fig. 9 B, show this production pipeline 903 around driving tube 905, this driving tube is around this bearingAssembly. In Fig. 9 C, show a front view of this assembly, wherein in driving tube 905 inside, use a clamping band904 keep this around this housing 900 of a part of drive rod 902.
In multiple embodiments of the present invention, this bearing assembly or configuration provide these tubular piece and this drive post canTo move individually and sequentially, instead of side by side carry out as in current available pumping system. In multiple realities of the present inventionExecute in scheme, this bearing assembly allow the pipe of independent section and drive post longer far away because these bearings are not attached at thisOn the connector of a little tubular piece. Therefore, these connectors can be greatly widely more spaced apart, and needn't be for necessary beforeBearing is placed and is adjusted. Therefore, this has allowed the relatively easier service and repair to pumping system. For example,, when this pumpWhile requiring service, these drive rods and/or tubular piece can be disposable for example, with the large length (length of several feet, 100 feetDeng) from well, pull out and return subsequently in well. Further, in one embodiment, these pipe jointers are threaded,Instead of there is flange attachment, for example, shown in Figure 1A and 1B, therefore greatly improve sealing integrity and installation rate.
In one embodiment of the invention, kind of bearings assembly is arranged on a drive rod and allows these bearingsAccording to the desired location best of the condition in well. For example, such condition may comprise in the tension force of bar and well canThe side load of energy, for example, due to wellhole deviation. In an example, the rotational stabilization of a drive post is with bar tension forceChange. That is, tension force is higher, and the rotation of bar is more stable. But near pump place, this bar may have little tension force in shaft bottom. CauseThis, this position at pump in well, distance between bearings needs spatially more close to guarantee stable rotation. EquallyGround, in the time upwards advancing along hole towards surface, the tension force of bar increases along with the increase of the weight of the bar below being effectively suspended in. CauseThis, the spacing of these bearings can increase within the scope of this. , at bar tension force maximum, along the relative bearing of drive rodSpacing can be the widest and be remained enough effective. In one embodiment of the invention, a kind of drive rod of optimizationThere is the requirement determining according to bar tension force and carry out isolated bearing.
Under actual conditions, oil well or well conventionally neither completely straight neither be vertical. Therefore, have little straightIn the pipeline in footpath, the drive rod of rotation may be forced to side due to the deviation of well direction, thereby is being positioned at this deviation modelEnclose near interior and/or bearing and cause lateral load. These drive rod bearings are mainly designed to keep roofbolt stably to revolveTurn and normally expect that they are only exposed in little lateral load. But, if expection side load is due to wellhole deviationAnd extremely high, can in having those regions of high side load, expection install for the designed spy of side load resistanceDifferent bearing, ceramic bearing as shown in Figures 5 to 9.
In multiple embodiments of the present invention, because the structure of pumping system needs easier to safeguard. A realityExecute in scheme, needn't remove miscellaneous part and just can remove the one or more drive rod. Allow so easier " tuning "Or adjust this pumping system for the operating condition that changes/ changed or for conventional maintenance. For example,, if changedA kind of operating condition is as pump speed, can with have more useful bearing type, configuration and/or distribution other one orMultiple drive rods are replaced this or these drive rod. For example, increase liquid yield if increase pump speed, can apparatusHave that different bearings distribute, easily replace these drive rods for the designed drive rod of higher rotating speed. Equally, ifIn one or more drive rods, occur losing efficacy, thereby can promptly move the drive rod of one or more replacements in down-holeMinimize downtime.
Multiple embodiment of the present invention provides the pumping at larger depth. Current obtainable bobbin pumping system allusion quotationHave type and be less than the pressure head capacity of 1500 feet and therefore extend to the degree of depth that is less than 1000 feet. The pipe of shorter lengthRoad and driving shaft cause a kind of a small amount of stretching, extension of these parts, for example, due to water column weight and/or thrust of pump in operating process.Such stretching, extension allows the support thrust bearing of driving shaft to be positioned at surface. For example see Figure 1A and Figure 1B, as described above. This permission is carried out little manual adjustment to the relative length of these parts, make like this impeller of pump (not only reversed but also axiallyFixedly be attached on driving shaft) freely rotate. But, in multiple embodiments of the present invention, the permitting of given these partsThe larger degree of depth of being permitted and therefore larger hydrostatic educational level, the production pipeline of attached pump and these drive rods with/Or between driving tube, have larger relatively moving far away, thereby allow more manually adjusting range.
In Figure 10, show according to a reality of the direct-driven pump bottom hole assembly with driving tube of the present inventionExecute scheme. In such embodiment, this pump driving shaft thrust bearing directly can be placed in this pump directly over or underSide. This pump driving shaft and multiple rotor pass through a spline joint or spline rod connector by this or these drive rod 10001005 drive, and this connector allows to produce vertical movement significantly relative between pipeline and this or these drive rod 1000And allow this pump driving shaft and multiple rotor still axially to fix with respect to pump body simultaneously. An embodimentIn, there is an other thrust bearing that is positioned at surface to deal with the weight of this drive post. For example see Fig. 2. In Figure 10, rawProduce pipeline 1003 around driving tube 1001, this driving tube is around drive rod 1000. Multiple stabilizers 1002 are positioned in and driveIn lever 1000 and spaced apart to support it. Within driving tube 1001 is own, there is a bottom driving tube discharge orifice 1004.Figure 10 further shows a closed hole driving tube connection 1006, thrust-type receiving element 1007, thrust-type receiving element floss hole1008, relation and the relative position between thrust bearing 1009, pump 1010 and pump intake 1011.
Figure 11 shows and is similar to the embodiment shown in Figure 10 according to one of the present invention, except not having driving tube1001. In this embodiment, still adopt a spline joint 1105. Further, show and use a thrust bearing1101, for example polycrystalline diamond (PCD) thrust bearing, it is positioned at below pump and above pump intake.
Figure 12 shows according to an embodiment of the driving tube with top drilling of the present invention. Figure 12 shows thisThe just section of an amplification below well head 1201 of pumping system. A casing 1208, should around production pipeline 1200Produce pipeline 1200 around driving tube 1203. This driving tube 1203 is shown in has multiple floss holes in its upper area1202 to allow fluid to flow. Because the drive rod 1204 that is arranged in driving tube 1203 moves at running, these driveLever stabilizer 1205 is positioned on this bar and supports this bar. In the operating process of this embodiment, fluid is being producedIn pipeline 1200, driving tube 1203 interior flow and move up towards surface from driving tube 1203.
In multiple embodiments of the present invention, can use different lubricants to these bearings. For example, have oneIn the embodiment of individual large production housing or pipeline, can there is the more driving tube of minor diameter with one and carry out this driving of cladBar. This driving tube can be centered and protect this drive rod to avoid producing in this production pipeline and for substanceFluid stream therein in the corrosion and the dirt deposition that occur. In such embodiment, must select the lubricated of bearingMake it can not affect negatively the miscellaneous part of this system, for example sealing between parts etc. For example,, in some systemsIn, use oil as lubricant. In such system, a kind of oil lubricant may be useful at more shallow depth. SoAnd, may be between the oil of producing in fluid and the driving tube that produce in pipeline in relatively larger depth use oil lubricantCause sealing problem. Such problem for example may be, due between the well fluids of this lubricating oil and generation (, typically water)Density contrast produce. For example, for example, locate in the dark degree of depth (6000 feet), the lubricating oil cylinder with 0.9 proportion withThe pressure differential having between the water of 1.0 proportion is almost 260psi at the depth of 6000 feet. And in a pumping systemIn system, if the fluid of generation and this lubricating oil are kept separating, these bottom the driving tube of oil filling are closeThis 260psi pressure differential when sealing must resist 3500RPM and sealing. This pressure condition may propose potential operationDifficulty. Alternatively, the oil column of surface can be pressurized to 260psi, make like this shaft bottom of the fluid column of this oil column and generationPressure is that equate or almost equal, thereby it is poor on these seals, to ease off the pressure. This replacement scheme has also proposed behaviourMake difficulty. For example, if there is any variation in surface production pressure and in well shutting in and start-up course, need pinExpection in bottom-hole producing pressure (PBHP) is changed the surface pressing in driving tube is adjusted. In another replacement scheme,Can use a kind of oil lubricant that has similar density to glassware for drinking water, making like this fluid pressure in these two posts is large in shaft bottomApproximately equate. This has also proposed difficulty, and such oil is that synthesize and therefore high unreachablely expensive. Of the present invention multipleIn embodiment, these difficulties are overcome. For example, the driving shaft of a water lubrication provides in one embodiment of the inventionThe benefit of system of oil lubrication, and there is no operating difficulties, lubricant cost and/or pressure balanced problem. This water lubricationSystem is included in the driving shaft rotating in the driving tube of minor diameter, and is equipped with closely isolated bearing so that rotation to be providedStability, as in this discussion. In one embodiment, this driving tube is not isolated with the Fluid Sealing producing. ProduceFluid filling this driving tube and as bearing lubricant. Make in the embodiment of water as lubricant at such one,Can use the bearing designing for water lubrication. Kind of bearings can use the design of pottery, carbide or be designed to polymerizationThing alloy bearing, this depends on load and wearing and tearing requirement, as in this discussion. As shown in Figure 12, by driving tube in surfacePerforate is to production flowline to discharge the oil collected or gas and allow along driving tube flowing upwards in this pipeSpeed is controlled. In one embodiment, driving tube perforate is entered in the production pipeline of well head below, thereby allow to produceRaw fluid upwards flows continuously along driving tube. This can improve lubricated and/or improve the cooling of these bearings. An enforcementIn scheme, fill driving tube with the fluid producing and may be provided in originally and two benefits of reliability. In this embodimentIn, be unwanted at these driving shaft seals at pump assembly place. But, use an axle bush (for example carbide) by this axleBottom at driving tube centers. This driving tube is moved freely and enters this driving tube with the fluid that allows to produce by perforate in bottomIn, thereby ensure that these driving shaft bearings are immersed in fluid always. In one embodiment, if the fluid producing is rottenErosion property or be easy to incrustation, can use the selection of production flow line perforate, because can be to along driving tube mobile speed upwardsIt is substantially motionless that thereby rate is controlled the fluid making in driving tube closely. Therefore, greatly reduced in drive post and/orOn bearing, any of corrosion or incrustation may. In such embodiment, in the time lacking continuous moving, motionless what generateWater column in any remaining dirt and corrosive component will there is minimum effect.
In one embodiment, this driving tube is open into pump discharge, therefore in the time that it is full of by liquid completely, and Guan ZhongbiaoThe pressure at face place deducts by equaling pump discharge pressure the fluid pressure that static liquid scapus applies. Be in table at production pipe outletThe pressure at face place deducts fluid pressure that static liquid scapus applies and deducts owing to producing in pipeline and flow equaling pump discharge pressureThe mobile friction pressure drop causing of body. Therefore,, as long as exist and flow in pipeline, the pressure at this driving tube top place just will be greater than tableThe product pipeline pressure of looking unfamiliar, its difference is the pressure drop that flowage friction causes. This difference can be used for removing and will naturally be accumulated in and driveThe gas at moving pipe top place. Because this driving tube is open for the production fluid of well, so some gas in process of productionBody and/or oil can upwards move along this driving tube. Finally, these oil and/or gas will have been replaced the water in driving tube completely.Even if gas has been filled a part for this pipe, this situation is more serious, because the bearing on top may become shortage liquidLubricant, thus final bearing failure caused.
In one embodiment, a driving tube can be equipped with and lead to the discharge pipe line of producing pipe outlet, and shouldPipeline can be equipped with a pressure regulator, and the pressure differential of this pressure regulator between driving tube and production pipeline exceedes establishesWhen definite value, open. Oil and/gas may be accumulated in driving tube in the situation that, the pressure set points of this pressure regulator mayNeed to after the friction loss pressure drop of considering higher than this expection, set, make like this this valve only such in generationAfter accumulation, open. Therefore,, along with oil and gas are accumulated at driving tube top, can be set to week by this valve regulating that is stressedOpen to phase property to discharge some oil and gas from pipe, thereby the water of the constant basis in maintenance driving tube makes this like thisA little bearings are lubricated always.
Not paying special attention in an embodiment of corrosion or incrustation, can use the reality of this driving tube dischargeExecute scheme. In this embodiment, this driving tube, in bottom opening, just enters production pipeline but there is one below well headIn other driving tube floss hole (as Figure 12). In production operation process, owing to producing ducted high flow rate,In production pipeline between shaft bottom and surface, may there is significant friction pressure drop. Therefore, the driving tube inside of surfaceFluid pressure is ducted larger than adjacent production. This difference can be used for forcing low velocity fluid upwards to flow also along driving tubeFrom top discharge mouth, flow out, thereby cause the fluid producing along driving tube lasting circulation upwards, lubricated and cooling these axlesHold. Any oil and/or the gas that enter this driving tube also will, through top discharge hole, lubricate thereby eliminated to cause to lack enoughThe gas buildup chance of agent, as described above.
In these embodiments, the effective cooling of stabilizer bearing is provided and has lubricated by the constant flow of water. ExampleAs see Figure 12. Such Cooling and Lubricator may be crucial in the situation that of well devious, because these stabilizer bearingsBecause heavier side load is experienced in the bending of this drive post. In one embodiment, this production flow line discharge also canWith fluid that generation is provided along continuous-flow upwards of driving tube so that the cooling bearing that is positioned at this region together. FurtherGround, this production flow line discharge can provide, and allows the liquid of desired amount along driving by only opening a control valveManage upwards continuous-flow and enter in production flowline to remove continuously any oil and/or the gas accumulated in driving tubeBody.
Multiple embodiment of the present invention is conducive to more easily install a well pump. Figure 13 shows to install directly and drivesA kind of exemplary method of pump, this direct-driven pump has driving tube of as shown in Fig. 2 and Fig. 7 embodiment and oneDrive rod. Generally, in oilfield operations, use well service equipment that a pump assembly is arranged in a well. This well serviceEquipment there is a brandreth tower, multiple winch and allow auxiliary equipment that tubular piece stretches into and pull out with and in well, makeWith other equipment. This bottom hole assembly (comprising multistage pump, thrust bearing and a drive rod and driving tube receiving element) passes throughA kind of connection (being for example threaded) is attached on the production pipeline 1301 of a length. The production pipeline of this length typically wrapsDraw together 2-section pipe road, each length is 30 feet, and is threaded and is linked together by for example one, forms thus one section approximately60 feet of long pipelines. This pump assembly and single section of device for cleaning pipeline are crossed to this well service equipment transfers and enters into well 1302 approximately 60 EnglishChi, and by this fixing pipeline in well head 1303. The device for cleaning pipeline of 60 feet of another sections is crossed to for example one is threaded and attachedConnect 1304 to this section of pipeline being fastened in well head and be attached on this bottom hole assembly. Whole assembly is transferred1305 other 60 feet and another section is attached on this production pipeline. This process continues until this bottom hole assembly is positioned at wellIn 1306 desirable depth and by this production fixing pipeline in well head. Next, by the intercept by multiple 60 feet(be threaded connection and connect the joint of two 30 feet) form, there is the more driving tube of minor diameter and be inserted into production pipelineIn 1307 and will extend to bottom, its mode with extend and be fixed on the class in well head 1308 producing pipeline and bottom hole assemblySeemingly. This driving column jecket is equipped with multiple centralizers to make it to be positioned at concentrically in this production pipeline, for example, referring to Fig. 2 and Tu3. This drive post is also equipped with a convex thrust-type member closely coordinating in bottom, this member is put in this bottom hole assemblyDriving tube closed hole receiving element in. This closed hole assembly by this driving tube orientate as make it in this bottom hole assembly aroundThis drive rod receiving element placed in the middle (for example, referring to Figure 10), also allow simultaneously between this driving tube and bottom hole assembly relative verticallyMobile. Then the multiple drive rods with multiple stabilizers that make into the intercept of 50 to 70 feet extend in this driving tube inside,Its mode is similar with the mode 1309 of extending driving tube. 25 feet or 30 feet long typically of these drive rods, and pass throughMultiple threaded connectors are attached to one another. This drive rod is extended to bottom and spline rod connector is thrust to driving in bottom hole assemblyIn lever thrust-type receiving element. For example see Figure 10. This spline joint allows this bar drive rotatably this centrifugal pump but provideRelative vertical movement between these drive rods and this bottom hole assembly. Do not use the direct drive pump of driving tube with same sideFormula is installed. Difference is not install driving tube in direct drive pump. But, by bottom hole assembly and produce pipelinePost directly stretches into this drive rod after extending the suitable degree of depth and being fastened in well head. Then driving head is installed, is made thisDrive rod can be rotated by motor (for example seeing Fig. 2), drives thus the centrifugal multistage pump multiple centrifugal pump in bottom hole assembly 1310. By this surfaceFlowline is attached on well head 1311 and pump is ready to for operation. Then can be by this surface flowline by thisThe well fluids that pump promotes is delivered to the position of any hope, for example near reservoir vessel etc.
Be understood that and have very clearly its of the present invention and different aspect thereof as those of ordinary skill in the artThe embodiment of his variant and amendment, and the present invention is not subject to the restriction of specific embodiments described herein. Described aboveFeature and embodiment can or can not combine mutually. The consideration of hereby making is to have covered to fall within this disclosure and propose powerAny and whole amendments, variant, combination or equivalent within the scope of the basic cardinal principle that profit requires.
Claims (2)
1. a direct-driven pump system, comprising:
A casing, this casing is the housing of this direct-driven pump system;
A production pipeline, is positioned at this casing;
A pump, attaches to the lower end of described production pipeline;
A drive rod, is positioned at described production pipeline and extends to the institute that is positioned at described production lower end of duct from surfaceState pump;
A driving head, is positioned at the endmost surface place of this production pipeline, and described driving head is equipped with rotation prime mover, described in attaching toDrive rod, for driving rotatably the object of described drive rod;
Wherein, described pump is centrifugal multistage pump multiple centrifugal pump, and the height that the spinner member of this pump need to about 3500RPM rotarilys actuate speed to be provided withEffect operation;
Wherein, described drive rod directly attaches to the described spinner member of the described pump that is arranged in described casing in down-hole,Thereby and directly drive the described spinner member of described pump to impel in described production pipeline with described high rotary actuation speedThe well fluids of pressurizeing by described pump flows for production towards surface to aboveground;
Wherein, described drive rod is equipped with multiple stabilizers and bearing, and described stabilizer and bearing attach to institute as requiredState the whole length of drive rod and be spaced apart to guarantee described drive rod along the whole length of described drive rodStable rotation in running;
Wherein, the tensile loads of described drive rod is depended at the described interval that attaches to the described bearing of described drive rod.
2. direct-driven pump system as claimed in claim 1, comprising:
A driving tube, described driving tube is positioned at this production pipeline, and extends to the lower end that is positioned at described pipeline from surfaceThe pump at place;
Wherein, described drive rod is positioned at described driving tube;
Wherein, the described drive rod of holding in described driving tube is directly connected in this spinner member of described pump, and revolvesImpel thereby turn to drive in the annular space of described spinner member between described driving tube and the inwall of described production pipelineThe well fluids of pressurizeing by described pump flows for production towards surface to aboveground;
Wherein, the described drive rod of holding in described driving tube is equipped with multiple stabilizers and bearing, described stabilizer and axleHold attach to as required the whole length of described drive rod and along the whole length of described drive rod be spaced apart withJust guarantee described drive rod stable rotation in rotating operation process in described driving tube;
Wherein, drive described in depending at the described interval that is attached to the described bearing of the described drive rod of holding in described driving tubeThe tensile loads of lever post;
Wherein, at least one centralizer attaches to outer surface and the described driving tube of radial support of described driving tube, makesDescribed driving tube remains in described production pipeline center.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23348809P | 2009-08-12 | 2009-08-12 | |
| US61/233,488 | 2009-08-12 | ||
| US23382609P | 2009-08-13 | 2009-08-13 | |
| US61/233,826 | 2009-08-13 | ||
| US12/552,806 | 2009-09-02 | ||
| US12/552,806 US8336632B2 (en) | 2009-09-02 | 2009-09-02 | System and method for direct drive pump |
| PCT/US2010/045377 WO2011019958A2 (en) | 2009-08-12 | 2010-08-12 | System and method for a direct drive pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102741498A CN102741498A (en) | 2012-10-17 |
| CN102741498B true CN102741498B (en) | 2016-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080034115.2A Expired - Fee Related CN102741498B (en) | 2009-08-12 | 2010-08-12 | For a kind of system and method for direct-driven pump |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP2464820B1 (en) |
| CN (1) | CN102741498B (en) |
| AR (1) | AR079097A1 (en) |
| AU (1) | AU2010282441B2 (en) |
| BR (1) | BR112012003240A2 (en) |
| CA (1) | CA2770853C (en) |
| MX (1) | MX2012001735A (en) |
| PE (1) | PE20110174A1 (en) |
| RU (1) | RU2554380C2 (en) |
| WO (1) | WO2011019958A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10151341B2 (en) * | 2015-08-27 | 2018-12-11 | General Electric Company | Load-limiting thrust bearing system and an associated method thereof |
| DE102018104015A1 (en) | 2018-02-22 | 2019-08-22 | Nidec Gpm Gmbh | Coolant pump with optimized bearing arrangement and improved heat balance |
| CN112940866B (en) * | 2021-02-19 | 2023-06-16 | 广州三井化妆品有限公司 | Oil-water separation device for extracting plant essential oil |
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| US2171171A (en) * | 1938-06-09 | 1939-08-29 | Brauer Walter | Well pump |
| US5309998A (en) * | 1992-11-19 | 1994-05-10 | Intevep, S.A. | Pumping system including flow directing shoe |
| US5960886A (en) * | 1997-01-30 | 1999-10-05 | Weatherford International, Inc. | Deep well pumping apparatus |
| US6454010B1 (en) * | 2000-06-01 | 2002-09-24 | Pan Canadian Petroleum Limited | Well production apparatus and method |
| US6523624B1 (en) * | 2001-01-10 | 2003-02-25 | James E. Cousins | Sectional drive system |
| US6796390B1 (en) * | 1999-09-21 | 2004-09-28 | Shell Oil Company | Method and device for moving a tube in a borehole in the ground |
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| US1746889A (en) | 1926-11-06 | 1930-02-11 | Louis A Fitzer | Rotary pump |
| US1647386A (en) | 1927-06-01 | 1927-11-01 | Pacific Pump Works | Deep-well column joint |
| US4448551A (en) | 1978-04-19 | 1984-05-15 | Murphy Reuel A | Method and apparatus for shaft support for turbine pumps |
| US5069284A (en) * | 1990-11-14 | 1991-12-03 | Joe C. McQueen, Jr. | Wear resistant rod guide |
| RU2237197C1 (en) * | 2002-12-27 | 2004-09-27 | Общество с ограниченной ответственностью "Поиск" | Well pump installation |
| US6830108B2 (en) * | 2003-05-01 | 2004-12-14 | Delaware Capital Formation, Inc. | Plunger enhanced chamber lift for well installations |
| GB0404458D0 (en) * | 2004-03-01 | 2004-03-31 | Zenith Oilfield Technology Ltd | Apparatus & method |
| CA2605914C (en) | 2005-04-25 | 2013-01-08 | Weatherford/Lamb, Inc. | Well treatment using a progressive cavity pump |
-
2010
- 2010-08-12 AU AU2010282441A patent/AU2010282441B2/en not_active Ceased
- 2010-08-12 BR BR112012003240A patent/BR112012003240A2/en not_active Application Discontinuation
- 2010-08-12 MX MX2012001735A patent/MX2012001735A/en active IP Right Grant
- 2010-08-12 CA CA2770853A patent/CA2770853C/en not_active Expired - Fee Related
- 2010-08-12 CN CN201080034115.2A patent/CN102741498B/en not_active Expired - Fee Related
- 2010-08-12 EP EP10808786.7A patent/EP2464820B1/en not_active Not-in-force
- 2010-08-12 RU RU2012106458/06A patent/RU2554380C2/en active
- 2010-08-12 PE PE2010000514A patent/PE20110174A1/en active IP Right Grant
- 2010-08-12 WO PCT/US2010/045377 patent/WO2011019958A2/en active Application Filing
- 2010-08-12 AR ARP100102959A patent/AR079097A1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2171171A (en) * | 1938-06-09 | 1939-08-29 | Brauer Walter | Well pump |
| US5309998A (en) * | 1992-11-19 | 1994-05-10 | Intevep, S.A. | Pumping system including flow directing shoe |
| US5960886A (en) * | 1997-01-30 | 1999-10-05 | Weatherford International, Inc. | Deep well pumping apparatus |
| US6796390B1 (en) * | 1999-09-21 | 2004-09-28 | Shell Oil Company | Method and device for moving a tube in a borehole in the ground |
| US6454010B1 (en) * | 2000-06-01 | 2002-09-24 | Pan Canadian Petroleum Limited | Well production apparatus and method |
| US6523624B1 (en) * | 2001-01-10 | 2003-02-25 | James E. Cousins | Sectional drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2012106458A (en) | 2013-08-27 |
| AU2010282441B2 (en) | 2016-06-02 |
| PE20110174A1 (en) | 2011-04-15 |
| EP2464820B1 (en) | 2017-09-27 |
| BR112012003240A2 (en) | 2017-03-21 |
| EP2464820A4 (en) | 2015-11-04 |
| CA2770853C (en) | 2017-12-12 |
| CA2770853A1 (en) | 2011-02-17 |
| AR079097A1 (en) | 2011-12-28 |
| CN102741498A (en) | 2012-10-17 |
| MX2012001735A (en) | 2012-03-29 |
| WO2011019958A2 (en) | 2011-02-17 |
| RU2554380C2 (en) | 2015-06-27 |
| AU2010282441A1 (en) | 2012-02-09 |
| EP2464820A2 (en) | 2012-06-20 |
| WO2011019958A3 (en) | 2012-03-01 |
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