EP1642029A2 - Pump for tail production of oil - Google Patents
Pump for tail production of oilInfo
- Publication number
- EP1642029A2 EP1642029A2 EP04748779A EP04748779A EP1642029A2 EP 1642029 A2 EP1642029 A2 EP 1642029A2 EP 04748779 A EP04748779 A EP 04748779A EP 04748779 A EP04748779 A EP 04748779A EP 1642029 A2 EP1642029 A2 EP 1642029A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- oil
- pistons
- piston
- interlock
- 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.)
- Granted
Links
- 239000003129 oil well Substances 0.000 claims abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
-
- 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
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
- F04B47/08—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid
Definitions
- the invention concerns a piston pump for oil production from oil wells having low pressure.
- the typical oil well in the North Sea firstly has an overpressure phase in which the oil in the structure possesses such a high pressure that it flows up through the production tubular by itself. This phase may last for some years, but gradually the pressure decreases sufficiently low for the well not to be self-producing any longer. At this stage, however, large amounts of oil remain in the structure, often as much as 80% of the total. There are mainly three methods of recovering more of the remaining amount.
- One method consists in gas injection down into the annulus, causing gas and liquid to flow out in a manner similar to that of a coffee maker.
- Another method consists in injecting water into the structure, thereby increasing the pressure therein.
- the third method consists in introducing a pump down in the drilling string and pumping up the oil.
- Such a pump must be constructed for usage under extreme conditions. Firstly, the production tubular is of a relatively small diameter; and secondly, it pertains to lifting heights of several thousand meters, hence very high pressures. Perhaps the biggest problem for today's pumps is that when the pressure in the oil structure is low, the amount and volume of gas in the oil will increase steadily, and the existing pumps do not function when the gas volume exceeds even a relatively small percentage amount.
- these pumps are constructed with a large number of axial pumps on a long, joint shaft and have a motor either below or above the very pump that may be 10-20 meters long.
- piston pumps are used in relatively shallow wells.
- the piston then is generally run up and down with a wire attached to an eccentric shaft.
- a pulsating oil flow, having delivery each time the piston moves upwards, is then achieved. This is acceptable when the oil column is this short.
- Piston pumps are pressure-powerful in a single step and may, under certain conditions, handle a relatively large amount of gas together with liquid and should, based on this, be ideal for recovering a maximum amount of oil from deep wells having low pressures in the structure.
- Publications NO 305 667; US 3,625,288; US 4,268,277; US 4,536,137 and GB 2 100 362 disclose pumps based on pistons.
- the object of invention is a piston pump for submerging in a drilling pipe, in which the pump will produce a relatively even oil flow; tolerate relatively large amounts of gas during induction; and simultaneously having a pump with no or very small and free mass forces that produce vibration.
- the pump according to the invention is shown in fig. 1 and consist of, from bottom, a suction mouth piece (1) , a valve housing (2), a pump cylinder section (3), an interlock section (4), a drive cylinder section (5), a control valve housing (6) and also a hydraulic drive unit (7) on top.
- the pump has four pistons, each respective end having a -pump piston (101) and a drive piston (101) . It is further disclosed that two of the radially opposing shafts (102) of the one piston pair is mechanically connected by means of a linkage (105) , hence move axially alike. The two other piston pairs are connected with the two preceding ones at cog wheel (104) and therefore will have to move in the opposite direction of these. This provides full balancing of the mass forces in the pump at the same time the volume flow becomes relatively constant, even though a pressure surge will arise when the pistons reciprocate.
- the oil channel of the cylinders is placed below the top of the cylinder, thereby allowing the piston to stop against an oil pillow and not mechanically.
- the pressure surge in this oil pillow is used to rearrange a bistable 3-5 port valve that reciprocates the oil flow of the pistons.
- the drive unit has an even oil flow through its pump.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20033044A NO319468B1 (en) | 2003-07-03 | 2003-07-03 | Pump for tail production of oil |
PCT/NO2004/000203 WO2005017299A2 (en) | 2003-07-03 | 2004-07-02 | Pump for tail production of oil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1642029A2 true EP1642029A2 (en) | 2006-04-05 |
EP1642029B1 EP1642029B1 (en) | 2007-08-22 |
Family
ID=27800759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04748779A Not-in-force EP1642029B1 (en) | 2003-07-03 | 2004-07-02 | Pump for tail production of oil |
Country Status (9)
Country | Link |
---|---|
US (1) | US20060153720A1 (en) |
EP (1) | EP1642029B1 (en) |
AT (1) | ATE371110T1 (en) |
AU (1) | AU2004265529B2 (en) |
BR (1) | BRPI0412293A (en) |
CA (1) | CA2532224A1 (en) |
DE (1) | DE602004008470T2 (en) |
NO (1) | NO319468B1 (en) |
WO (1) | WO2005017299A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101892817A (en) * | 2010-06-29 | 2010-11-24 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Gas balance assembly of gas balance oil pumping unit |
CN103437984B (en) * | 2013-08-14 | 2016-04-13 | 陕西延长石油(集团)有限责任公司研究院 | Multi-functional solid plunger tubing pump |
CN104632592B (en) * | 2014-12-04 | 2017-01-04 | 丁新建 | Ultralong-stroke oil extraction pump |
WO2016108839A1 (en) * | 2014-12-30 | 2016-07-07 | Halliburton Energy Services, Inc. | Constant velocity joint apparatus, systems, and methods |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US722240A (en) * | 1902-09-18 | 1903-03-10 | Sandusky Foundry And Machine Company | Multiple-cylinder pump. |
US1420052A (en) * | 1919-08-18 | 1922-06-20 | Cleo H Brand | Pump |
US1711582A (en) * | 1926-04-14 | 1929-05-07 | Ralph R Bostic | Deep-well pump |
US2534436A (en) * | 1948-05-13 | 1950-12-19 | Gibson Glenn Dean | Double-action pump |
US3625288A (en) * | 1970-04-14 | 1971-12-07 | George K Roeder | Method and apparatus for venting gas through a downhole pump assembly |
US4084923A (en) * | 1975-11-07 | 1978-04-18 | Roeder George K | Double-acting, downhole pump assembly |
US4097199A (en) * | 1976-10-14 | 1978-06-27 | Arrow Machine, Inc. | Double acting rack and gear-driven piston pump |
US4268277A (en) * | 1978-09-14 | 1981-05-19 | Combustion Engineering, Inc. | Multi-tubular centrifugal liquid separator and method of separation |
US4536137A (en) * | 1982-09-30 | 1985-08-20 | Trw Inc. | Submergible pumping apparatus |
US5290159A (en) * | 1993-03-04 | 1994-03-01 | Exxon Production Research Company | Downhole pump of constant differential hydraulic pressure |
-
2003
- 2003-07-03 NO NO20033044A patent/NO319468B1/en unknown
-
2004
- 2004-07-02 AU AU2004265529A patent/AU2004265529B2/en not_active Ceased
- 2004-07-02 EP EP04748779A patent/EP1642029B1/en not_active Not-in-force
- 2004-07-02 BR BRPI0412293-3A patent/BRPI0412293A/en not_active IP Right Cessation
- 2004-07-02 WO PCT/NO2004/000203 patent/WO2005017299A2/en active IP Right Grant
- 2004-07-02 US US10/562,780 patent/US20060153720A1/en not_active Abandoned
- 2004-07-02 AT AT04748779T patent/ATE371110T1/en not_active IP Right Cessation
- 2004-07-02 CA CA002532224A patent/CA2532224A1/en not_active Abandoned
- 2004-07-02 DE DE602004008470T patent/DE602004008470T2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005017299A3 * |
Also Published As
Publication number | Publication date |
---|---|
AU2004265529A1 (en) | 2005-02-24 |
WO2005017299A2 (en) | 2005-02-24 |
AU2004265529B2 (en) | 2008-06-12 |
DE602004008470D1 (en) | 2007-10-04 |
NO20033044L (en) | 2005-01-04 |
EP1642029B1 (en) | 2007-08-22 |
NO319468B1 (en) | 2005-08-15 |
ATE371110T1 (en) | 2007-09-15 |
DE602004008470T2 (en) | 2008-04-30 |
NO20033044D0 (en) | 2003-07-03 |
CA2532224A1 (en) | 2005-02-24 |
US20060153720A1 (en) | 2006-07-13 |
WO2005017299A3 (en) | 2005-05-06 |
BRPI0412293A (en) | 2006-09-05 |
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