WO2010141405A4 - Hydraulic oilfield lift pump - Google Patents
Hydraulic oilfield lift pump Download PDFInfo
- Publication number
- WO2010141405A4 WO2010141405A4 PCT/US2010/036807 US2010036807W WO2010141405A4 WO 2010141405 A4 WO2010141405 A4 WO 2010141405A4 US 2010036807 W US2010036807 W US 2010036807W WO 2010141405 A4 WO2010141405 A4 WO 2010141405A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic cylinder
- pumping unit
- oil well
- double acting
- hydraulic
- Prior art date
Links
- 238000005086 pumping Methods 0.000 claims 27
- 239000003129 oil well Substances 0.000 claims 21
- 239000012530 fluid Substances 0.000 claims 16
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
- F04B47/04—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Reciprocating Pumps (AREA)
Abstract
A vertically orientated hydraulically driven oilfield lift pump unit having a simplified hydraulic system. The system uses a pair of single acting hydraulic cylinders (18) in tandem with a pair of double acting hydraulic cylinders (20) interacting with hydraulic accumulators (58,60) to provide an energy efficient, robust hydraulic system design with a minimum number of components.
Claims
1. A vertically orientated reciprocating oil well pumping unit comprising:
at least one double acting hydraulic cylinder, mechanically coupled to at least one single acting hydraulic cylinder such that they extend and retract simultaneously to operate the pumping unit,
the cap end of the double acting hydraulic cylinder in closed-coupled fluid communication with a fluid end of at least one precharged hydraulic accumulator, wherein the accumulator supplies a pressure that develops an upward force equal to or exceeding the downward force of the load when the double acting hydraulic cylinder is fully extended in use and under load;
a hydraulic control valve having a first inlet/outlet port in fluid communication with the cap end of the single acting hydraulic cylinder and the valve having a second outlet/inlet port in fluid communication with the rod end of the double acting hydraulic cylinder, whereby, when the hydraulic control valve is operated to retract the cylinders, hydraulic pressure is applied to the rod end of the double acting hydraulic cylinder forcing it and the coupled single acting hydraulic cylinder to retract simultaneously, thereby causing the fluid from the cap end of the double acting cylinder to flow back into the accumulator, and,
causing the fluid from the cap end of the single acting cylinder to flow back through the return port of the hydraulic control valve into a hydraulic reservoir.
2. The vertically orientated surface oil well pumping unit of claim 1 wherein the foior-way hydraulic control valve is pressure compensated.
3. The vertically orientated surface oil well pumping unit of claim 1 wherein the pumping unit further comprises a pressure compensated hydraulic pump.
4. The vertically orientated surface oil well pumping unit of claim 1 wherein the cap end of the double acting hydraulic cylinder and cap end the single acting hydraulic cylinder are mechanically mounted to a common rigid base plate.
5. The vertically orientated surface oil well pumping unit of claim 1 wherein the rod ends of the hydraulic cylinders are mounted to a common rigid end plate.
6. The vertically orientated surface oil well pumping unit of claim 1 wherein the accumulators are precharged to a pressure sufficient to hold the load in place with the pump not operating.
7. The vertically orientated surface oil well pumping unit of claim 1 wherein when the four-way type hydraulic control valve is operated to extend the cylinders, hydraulic pressure is applied to the cap end of the single acting hydraulic cylinder forcing it to extend, and pressurized fluid from the accumulators is allowed to flow into cap end of the double acting cylinder thereby assisting in extending the cylinders.
8. A vertically orientated reciprocating oil well pumping unit comprising:
at least one double acting hydraulic cylinder, mechanically coupled to at least one single acting hydraulic cylinder such that they extend and retract simultaneously to operate the pumping unit,
a cap end of the double acting hydraulic cylinder in closed-coupled fluid communication with a fluid end of at least one precharged hydraulic accumulator, wherein the accumulator supplies a loading pressure that develops an upward force equal to or exceeding the downward force of the load when the double acting hydraulic cylinder is fully extended in use and under load;
whereby, in operation under load, the power required to extend the reciprocating oil well pumping unit is approximately equal to the power required to retract the reciprocating oil well pumping unit.
9. The vertically orientated surface oil well pumping unit of claim 8 wherein the four-way type hydraulic control valve is pressure compensated.
10. The vertically orientated surface oil well pumping unit of claim 9 wherein the pumping unit further comprises a pressure compensated hydraulic pump.
11. The vertically orientated surface oil well pumping unit of claim 10 wherein the cap end of the double acting hydraulic cylinder and cap end the single acting hydraulic cylinder are mechanically mounted to a common rigid base plate.
12. The vertically orientated surface oil well pumping unit of claim 11 wherein the rod ends of the hydraulic cylinders are mounted to a common rigid end plate.
13. The vertically orientated surface oil well pumping unit of claim 12 wherein the accumulators are precharged to a pressure sufficient to hold the load in place with the pump not operating.
14. The vertically orientated surface oil well pumping unit of claim 13 wherein when the four-way type hydraulic control valve is operated to extend the cylinders, hydraulic pressure is applied to the cap end of the single acting hydraulic cylinder forcing it to extend, and pressurized fluid from the accumulators is allowed to flow into cap end of the double acting cylinder thereby assisting in extending the cylinders.
15. The vertically orientated surface oil well pumping unit of claim 8 wherein a lowering load is 60% to 95% of a raising load.
16. The vertically orientated surface oil well pumping unit of claim 15 wherein the lowering load is not less than 70% of the raising load.
17. The vertically orientated surface oil well pumping unit of claim 15 wherein the lowering load is at least 75 to 85% of the raising load.
18. The vertically orientated surface oil well pumping unit of claim 12 wherein the accumulators are precharged to different pressures, that are nonetheless sufficient to hold the load in place with the pump not operating.
19. A hydraulic actuated reciprocating oil well pumping unit comprising:
at least a first hydraulic cylinder, mechanically coupled to at least a second hydraulic cylinder such that they extend and retract simultaneously to operate the pumping unit, the second hydraulic cylinder being a double acting hydraulic cylinder;
a source of hydraulic power;
a hydraulic control valve in fluid communication with the hydraulic power source and having a first inlet/outlet port in fluid communication with the cap end of the first hydraulic cylinder and a second outlet/inlet port in fluid communication with the rod end of the double acting hydraulic cylinder;
at least one hydraulic accumulator having a fluid end in fluid communication with the cap end of the double acting hydraulic cylinder, the accumulator being precharged to a pressure sufficient to allow the double acting hydraulic cylinder to support the load of the pumping unit at the time when the double acting hydraulic cylinder is extended in use and hydraulic pressure is applied to the rod end of the double acting hydraulic cylinder to reverse the pump direction;
whereby when the hydraulic control valve is operated to retract the cylinders and reverse the pump direction, hydraulic pressure is applied to the rod end of the double acting hydraulic cylinder forcing it and the coupled first hydraulic cylinder to retract simultaneously, thereby causing the fluid from the cap end of the double acting cylinder to flow back into the accumulator.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2011012819A MX2011012819A (en) | 2009-06-02 | 2010-06-01 | Hydraulic oilfield lift pump. |
| CA2763162A CA2763162C (en) | 2009-06-02 | 2010-06-01 | Hydraulic oilfield lift pump |
| EP10721094A EP2438264A2 (en) | 2009-06-02 | 2010-06-01 | Hydraulic oilfield lift pump |
| AU2010256864A AU2010256864B2 (en) | 2009-06-02 | 2010-06-01 | Hydraulic oilfield lift pump |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18326409P | 2009-06-02 | 2009-06-02 | |
| US61/183,264 | 2009-06-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2010141405A2 WO2010141405A2 (en) | 2010-12-09 |
| WO2010141405A3 WO2010141405A3 (en) | 2011-03-31 |
| WO2010141405A4 true WO2010141405A4 (en) | 2011-06-09 |
Family
ID=43218903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2010/036807 WO2010141405A2 (en) | 2009-06-02 | 2010-06-01 | Hydraulic oilfield lift pump |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100300679A1 (en) |
| EP (1) | EP2438264A2 (en) |
| AU (1) | AU2010256864B2 (en) |
| CA (1) | CA2763162C (en) |
| MX (1) | MX2011012819A (en) |
| WO (1) | WO2010141405A2 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2770006A1 (en) * | 2011-03-04 | 2012-09-04 | Leonard C. Sotz | Method and apparatus for fluid pumping |
| US9291036B2 (en) * | 2011-06-06 | 2016-03-22 | Reel Power Licensing Corp. | Method for increasing subsea accumulator volume |
| CN103291247B (en) * | 2012-02-27 | 2015-12-09 | 姜成华 | Vertical hydraulic oil pumper |
| US9822777B2 (en) | 2014-04-07 | 2017-11-21 | i2r Solutions USA LLC | Hydraulic pumping assembly, system and method |
| MX2016016562A (en) * | 2014-07-08 | 2017-08-10 | Halliburton Energy Services Inc | Accumulator over hydraulic pump double-actng cylinder for artifical lift operations. |
| MX2016016466A (en) | 2014-07-08 | 2017-04-10 | Halliburton Energy Services Inc | Accumulator counterbalanced three-chamber cylinder for artificial lift operations. |
| CA2947844C (en) | 2014-07-08 | 2018-06-05 | Halliburton Energy Services, Inc. | Pneumatic-on-top counterbalanced three-chamber cylinder for artificial lift operations |
| US10047739B2 (en) | 2014-12-31 | 2018-08-14 | Zedi Canada Inc. | Pump jack system and method |
| CN108843275B (en) * | 2018-06-12 | 2020-11-20 | 刘长年 | Fourth generation high-efficiency long-stroke long-life intelligent electromechanical hydraulic oil pumping machine |
| CN108798605B (en) * | 2018-08-23 | 2024-06-14 | 穆牧之 | Intelligent control digital hydraulic pumping unit |
| RU187964U1 (en) * | 2018-12-13 | 2019-03-26 | Общество с ограниченной ответственностью "Пермская нефтяная инжиниринговая компания" | Device for installing a hydraulic cylinder of a sucker rod pump in a well |
| RU188939U1 (en) * | 2019-02-08 | 2019-04-30 | Общество с ограниченной ответственностью "Пермская нефтяная инжиниринговая компания" | HYDRAULIC DRIVE OF THE ROD OF WELL PUMP |
| CA3080552A1 (en) | 2020-05-01 | 2021-11-01 | Richard K. Young | Polished rod elevators, and related methods of use |
| RU2754247C1 (en) * | 2020-12-18 | 2021-08-31 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Method for extracting high-viscosity oil at shallow depths and a device for its implementation |
| CN115126418B (en) * | 2022-08-30 | 2022-12-09 | 东营市昆昆科技有限责任公司 | Drilling method for drilling multiple boreholes based on one borehole site |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3405605A (en) * | 1966-06-14 | 1968-10-15 | Milburn M. Ross | Hydraulic pump jack means |
| US3632234A (en) * | 1969-11-04 | 1972-01-04 | Pump Specialties Inc | Method and apparatus for actuating a subsurface reciprocal well pump |
| US4201115A (en) * | 1978-07-11 | 1980-05-06 | Ogles Ethridge F | Oil well pump jack with dual hydraulic operating cylinders |
| US4198820A (en) | 1978-08-21 | 1980-04-22 | N L Industries, Inc. | Pumping unit for a well pump |
| CA1070216A (en) * | 1979-02-22 | 1980-01-22 | John C. Carlson | Pump jack assembly for wells |
| US4347049A (en) * | 1980-06-17 | 1982-08-31 | Anderson John M | Balance hydraulic pumping unit |
| US4400141A (en) * | 1981-06-23 | 1983-08-23 | Lee Jack E | Hydraulic pump unit |
| US4512149A (en) | 1982-02-11 | 1985-04-23 | Weaver Paul E | Oil well pumping unit |
| US4646517A (en) * | 1983-04-11 | 1987-03-03 | Wright Charles P | Hydraulic well pumping apparatus |
| US4698968A (en) | 1985-12-06 | 1987-10-13 | Black Gold Development Corporation | Pumping unit |
| US4762473A (en) | 1986-02-05 | 1988-08-09 | Tieben James B | Pumping unit drive system |
| US4761120A (en) | 1986-06-23 | 1988-08-02 | Mayer James R | Well pumping unit and control system |
| US4848085A (en) * | 1988-02-23 | 1989-07-18 | Dynamic Hydraulic Systems, Inc. | Oil-well pumping system or the like |
| US5152140A (en) * | 1989-10-11 | 1992-10-06 | Hitachi Construction Machinery Co., Ltd. | Pressure compensating valve spool positioned by difference in pressure receiving areas for load and inlet pressures |
| US5536150A (en) * | 1994-07-28 | 1996-07-16 | Tucker; Joe W. | Hydraulic-pneumatic stroke reversal system for pumping units, and its application in preferred embodiments |
| WO2009052175A1 (en) * | 2007-10-15 | 2009-04-23 | Unico, Inc. | Cranked rod pump apparatus and method |
-
2010
- 2010-06-01 MX MX2011012819A patent/MX2011012819A/en active IP Right Grant
- 2010-06-01 US US12/791,070 patent/US20100300679A1/en not_active Abandoned
- 2010-06-01 EP EP10721094A patent/EP2438264A2/en not_active Withdrawn
- 2010-06-01 AU AU2010256864A patent/AU2010256864B2/en not_active Ceased
- 2010-06-01 CA CA2763162A patent/CA2763162C/en not_active Expired - Fee Related
- 2010-06-01 WO PCT/US2010/036807 patent/WO2010141405A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010141405A3 (en) | 2011-03-31 |
| MX2011012819A (en) | 2011-12-16 |
| AU2010256864A1 (en) | 2011-12-08 |
| CA2763162C (en) | 2014-08-12 |
| CA2763162A1 (en) | 2010-12-09 |
| AU2010256864B2 (en) | 2015-01-22 |
| WO2010141405A2 (en) | 2010-12-09 |
| US20100300679A1 (en) | 2010-12-02 |
| EP2438264A2 (en) | 2012-04-11 |
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