CN100337034C - Hydraulic oil pump - Google Patents
Hydraulic oil pump Download PDFInfo
- Publication number
- CN100337034C CN100337034C CNB2004100747317A CN200410074731A CN100337034C CN 100337034 C CN100337034 C CN 100337034C CN B2004100747317 A CNB2004100747317 A CN B2004100747317A CN 200410074731 A CN200410074731 A CN 200410074731A CN 100337034 C CN100337034 C CN 100337034C
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- pump barrel
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- plunger
- valve
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Abstract
The present invention relates to a hydraulic oil pump, which uses hydraulic pressure as motive power. The present invention is composed of an upper pump barrel, a lower pump barrel, a fixed valve, a traveling valve, etc., wherein an upper liquid cylinder is arranged in the upper pump barrel; a power fluid passage is arranged on the lower part of the upper liquid cylinder; a piston is in the upper liquid cylinder; the lower part of the piston is connected with a cylindrical plunger; the lower part of the plunger is connected with the traveling valve; the lower pump barrel is connected to the lower part of the upper pump barrel; the fixed valve is on the lower part of the lower pump barrel; a pull rod and a hanging load are hung on the lower part of the traveling valve, and a well liquid passage is arranged between the hanging load and the lower pump barrel. After the hanging load is connected to the lower part of the traveling valve, the present invention has the action of pulling the piston to descend.
Description
Technical field
The present invention relates to petroleum production does not have a kind of downhole oil extraction device in the bar pumping technology field, be a kind of be the downhole pump of power with hydraulic pressure, the gravity reduction oil well pump that particularly adopts ground changement control oil well pump piston to move back and forth.This hydraulic well pump relies on ground hydraulic power, the well liquid in the oil well is extracted into ground, and becomes a kind of new design with practicability, and the industry wide popularization and application is suitable for recovering the oil.
Background technique
Chinese patent 03203725.2 is a kind of hydraulic well pump of our company application, is for overcoming double-action hydraulic piston pump pipeline complexity, and changement designs in the shortcoming of down-hole.This hydraulic well pump is made up of urceolus, standing valve, travelling valve, last cylinder barrel, following cylinder barrel.The dynamic liquid in last cylinder barrel bottom is imported and exported, and in the last cylinder barrel upper piston is arranged, and power fluid promotes upper piston and moves upward.Have well liquid to import and export on urceolus, following cylinder barrel bottom also has well liquid to import and export.The effect that well liquid is imported and exported is a balance upper piston pressure.It is the pressure that relies on piston top well liquid that upper piston moves downward, and promotes upper piston and moves downward.The upper and lower to-and-fro motion of upper piston reaches the purpose of oil pumping.This technological scheme is a precedent in underground hydraulic pressure oil well pump technical field.Be characterized in only having two passes to connect ground, one is the reciprocal passage of power fluid, a production fluid outflow pathway.In addition, the power fluid changement is arranged on ground.Find that in manufacturing, experimentation the solution upper piston moves downward problem and also has more reliable, an easier technological scheme.
Summary of the invention
The objective of the invention is: move downward for solving the hydraulic oil pumping pump piston, more reliable, an easy hydraulic well pump that utilizes suspending weight to reset is provided again.
The technological scheme that the present invention solves its technical problem is: hydraulic well pump comprises pump barrel, following pump barrel, standing valve and travelling valve, last fluid cylinder is arranged, dynamic liquid duct, last fluid cylinder bottom in the last pump barrel.In the last fluid cylinder piston is arranged, seal ring is arranged around the piston.The piston bottom connects the tubular plunger.The plunger bottom connects travelling valve.There is plunger case the plunger outside.Following pump barrel is connected the pump barrel bottom.Standing valve is arranged at following pump barrel bottom.Contribution part of the present invention is: be hung with pull bar in the travelling valve bottom, the pull bar bottom is fixed with suspending weight.The effect of pull bar is to connect travelling valve and suspending weight.The suspending weight profile is a column, and weight is between the 250-850 kilogram.Suspending weight has between suspending weight and the following pump barrel and the liquid passage in following pump barrel.
The invention has the beneficial effects as follows: this hydraulic well pump is installed in the oil well, about 2000 meters dark down-holes apart from ground, the long-play experiment, piston moves upward by ground hydraulic power, moves downward by suspending weight to discharge potential energy, and the upper and lower motion of piston is smooth.The suspending weight mode has solved piston well and has moved downward problem.In the hydraulic well pump technical field, my company at first adopts the technological scheme that suspending weight is set under piston, plunger, realizes that travelling valve moves downward.The present invention is one in the present technique field and is bold in innovation.
Description of drawings
The present invention is further described below in conjunction with the application drawings and Examples.
Fig. 1 is the sectional arrangement drawing of hydraulic well pump, is its structural representation.Also be that hydraulic power enters, promote the workflow schematic representation that piston moves upward.Dotted arrow is the direction that power fluid flows.The indicated direction of solid arrow is the direction that well liquid flows.
Fig. 2 also is the sectional arrangement drawing of hydraulic well pump.Weary power fluid returns ground, and suspending weight spurs the workflow schematic representation of descent of piston under action of gravity.Dotted arrow is the direction that power fluid flows.The indicated direction of solid arrow is the direction that well liquid flows.
Among the figure, 1. go up fluid cylinder, 2. piston, 3. seal ring, 4. plunger, 5. pump barrel is 6. gone up in the power fluid duct, 7. the static seal circle, 8. travelling valve, 9. plunger case, 10. pull bar, 11. suspending weight, 12. times pump barrels, 13. standing valves, 14. sleeve pipe, 15. outer oil pipes, 16. inner oil tubes, 17. wellhead flange, 18. service lines, 19. production fluid pipelines.
Embodiment
Embodiment 1,110 millimeters of last pump barrel 6 external diameters, 3800 millimeters of length.Between last pump barrel 6 and the following pump barrel 12 connecting body is arranged.Last pump barrel 6, down between pump barrel 12 and the connecting body by being threaded.Limited step is arranged in connecting body.Static seal circle 7 is arranged in the limited step.Following pump barrel 12 bottoms are connected and fixed valve 13.In the present embodiment, standing valve 13 is arranged at following pump barrel 12 bottoms.Last fluid cylinder 1 is in last pump barrel 6.Last fluid cylinder 1 external diameter is 73 millimeters, 3500 millimeters of length.4 power fluid ducts 5 are arranged at the bottom of last fluid cylinder 1, and each power fluid duct 5 diameter is 10 millimeters.Last fluid cylinder 1 bottom attachment post plug cylinder 9, there is plunger 4 plunger case 9 inside.Plunger case 9 length are 3500 millimeters.Piston 2 external diameters are 60 millimeters.6 seal rings 3 are arranged on piston 2 external diameters.Piston 2 is as a whole with plunger 4, and plunger 4 bottoms connect travelling valve 8.Be hung with pull bar 10 in travelling valve 8 bottoms, pull bar 10 diameters are 25 millimeters, 1600 millimeters of length.Fixedly suspending weight 11 of screw thread is adopted in pull bar 10 bottoms.Suspending weight 11 profiles are cylindric, 60 millimeters of external diameters, and weight is 400 kilograms.Suspending weight 11 is in oil pipe, and 69 millimeters of following pump barrel 12 internal diameters have 4.5 mm clearance between suspending weight 11 and the following pump barrel 12, are the passages of well liquid.Standing valve 13, travelling valve 8 are necessary parts of existing oil well pump, the spherical valve of most employings.The present invention adopts standing valve 13, the travelling valve 8 of original technology, is not described in detail.
The simple installation of describing hydraulic well pump, the present invention may be better understood.Consult accompanying drawing 1 and accompanying drawing 2.The present invention is installed in hundreds of rice or last km place under the oil well, and there is sleeve pipe 14 its outside.The top of hydraulic well pump connects outer oil pipe 15, is inner oil tube 16 in the outer oil pipe 15.Annular space between outer oil pipe 15 and the inner oil tube 16 is the passage that power fluid passes through; Inner oil tube 16 centers are passages that well liquid rises.Inside and outside oil pipe 15,16 is connected on the wellhead flange 17, and service line 18 is connected with flange 17 with production fluid pipeline 19.The installation of hydraulic well pump is that those skilled in the art and workman can accomplish.
The working principle of summary hydraulic well pump: the ground power fluid through inner oil tube 16 with outside annular space between the oil pipe 15, and enter piston 2 bottoms by the power fluid duct 5 of last fluid cylinder 1 bottom, promotion piston 2 moves upward.Piston 2 drives plunger 4, travelling valve 8 and suspending weight 11 to up.At this moment, travelling valve 8 is closed automatically, and the well liquid that promotes to go up in the fluid cylinder 1 upwards flows.Simultaneously, standing valve 13 is opened automatically, and well liquid enters down pump barrel 12 by standing valve 13.Consult accompanying drawing 1.Finish first working procedure, i.e. discharge opeing process.In this process, suspending weight 11 positions raise, and the potential energy of suspending weight 11 increases.When ground hydraulic power station commutation, the pressure release of pressure in the service line 18, weary power fluid from the power fluid duct 5 of last fluid cylinder 1 bottom return inner oil tube 16 and outside annular space between the oil pipe 15.Suspending weight 11 discharges potential energy, and piston 2 moves downward under the action of gravity of suspending weight 11.Piston 2, plunger 4, travelling valve 8 and suspending weight 11 are descending.At this moment, travelling valve 8 is opened automatically, and standing valve 13 is closed automatically, and the well liquid in the following pump barrel 12 is in travelling valve 8 enters fluid cylinder 1.Consult accompanying drawing 2.Finish second working procedure, i.e. the feed liquor process.Under the ground hydraulic dynamic action, discharge opeing and feed liquor process constantly hocket, oil well liquid by oil well pump by extraction.
Claims (3)
1, a kind of hydraulic well pump that is applied to the oil field rodless pumping operation, comprise pump barrel (6), following pump barrel (12), standing valve (13) and travelling valve (8), last fluid cylinder (1) is arranged in the last pump barrel (6), dynamic liquid duct, last fluid cylinder (1) bottom (5), piston (2) is arranged in the fluid cylinder (1), piston (2) has seal ring (3) on every side, piston (2) bottom connects tubular plunger (4), plunger (4) bottom connects travelling valve (8), there is plunger case (9) plunger (4) outside, following pump barrel (12) is connected pump barrel (6) bottom, standing valve (13) is arranged at pump barrel (12) bottom, it is characterized in that: be hung with pull bar (10) in travelling valve (8) bottom, pull bar (10) bottom is fixed with suspending weight (11), and suspending weight (11) profile is a column, and weight is between the 250-850 kilogram, suspending weight (11) has well liquid passage between suspending weight (11) and the following pump barrel (12) in following pump barrel (12).
2, hydraulic well pump as claimed in claim 1 is characterized in that: described suspending weight (11) profile is cylindrical.
3, hydraulic well pump as claimed in claim 1 is characterized in that: upper and lower pump barrel has connecting body between (6,12), and limited step is arranged in the connecting body, and plunger case (9) is fixed on the limited step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100747317A CN100337034C (en) | 2004-09-14 | 2004-09-14 | Hydraulic oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100747317A CN100337034C (en) | 2004-09-14 | 2004-09-14 | Hydraulic oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1587707A CN1587707A (en) | 2005-03-02 |
| CN100337034C true CN100337034C (en) | 2007-09-12 |
Family
ID=34604865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100747317A Expired - Fee Related CN100337034C (en) | 2004-09-14 | 2004-09-14 | Hydraulic oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100337034C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337033C (en) * | 2004-09-14 | 2007-09-12 | 北京迪威尔石油天然气技术开发有限公司 | Rodless hydraulic oil pumping system |
| CN101216028B (en) * | 2007-12-27 | 2010-10-06 | 国营第三八八厂 | Hydraulic power oil pump |
| CN101672174B (en) * | 2009-10-14 | 2012-06-06 | 核工业理化工程研究院华核新技术开发公司 | Energy-saving uninterrupted non-rod oil pumping device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075191A (en) * | 1993-01-19 | 1993-08-11 | 周逢春 | Hydraulic cylinder type pumping unit in well and oil production method |
| CN2528961Y (en) * | 2001-11-30 | 2003-01-01 | 中国石油天然气股份有限公司 | Underground hydraulic oil-well pump |
| CN2549176Y (en) * | 2002-06-10 | 2003-05-07 | 赵怀文 | Signal-feedback pumping unit |
| CN1450247A (en) * | 2003-02-17 | 2003-10-22 | 北京迪威尔石油天然气技术开发有限公司 | Rod free hydraulic oil pumping system |
| CN2597709Y (en) * | 2003-02-17 | 2004-01-07 | 北京迪威尔石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN1587706A (en) * | 2004-09-14 | 2005-03-02 | 北京迪威尔石油天然气技术开发有限公司 | Rodless hydraulic oil pumping system |
-
2004
- 2004-09-14 CN CNB2004100747317A patent/CN100337034C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075191A (en) * | 1993-01-19 | 1993-08-11 | 周逢春 | Hydraulic cylinder type pumping unit in well and oil production method |
| CN2528961Y (en) * | 2001-11-30 | 2003-01-01 | 中国石油天然气股份有限公司 | Underground hydraulic oil-well pump |
| CN2549176Y (en) * | 2002-06-10 | 2003-05-07 | 赵怀文 | Signal-feedback pumping unit |
| CN1450247A (en) * | 2003-02-17 | 2003-10-22 | 北京迪威尔石油天然气技术开发有限公司 | Rod free hydraulic oil pumping system |
| CN2597709Y (en) * | 2003-02-17 | 2004-01-07 | 北京迪威尔石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN1587706A (en) * | 2004-09-14 | 2005-03-02 | 北京迪威尔石油天然气技术开发有限公司 | Rodless hydraulic oil pumping system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1587707A (en) | 2005-03-02 |
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Granted publication date: 20070912 Termination date: 20150914 |
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