CN105781950A - Rod type oil well pump for thickened oil exploiting - Google Patents
Rod type oil well pump for thickened oil exploiting Download PDFInfo
- Publication number
- CN105781950A CN105781950A CN201610271281.3A CN201610271281A CN105781950A CN 105781950 A CN105781950 A CN 105781950A CN 201610271281 A CN201610271281 A CN 201610271281A CN 105781950 A CN105781950 A CN 105781950A
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- China
- Prior art keywords
- valve
- assembly
- oil
- rod
- outer tube
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Classifications
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- 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
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- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a rod type oil well pump for thickened oil exploiting. The rod type oil well pump comprises an outer tube assembly and an oil pumping device assembly arranged in the outer tube assembly; the outer tube assembly comprises a top limiting supporting base, an outer tube, a middle tube and a lower connector, and the oil pumping device assembly comprises a valve rod assembly, a top mechanical locking device, a plunger assembly, a fixing valve assembly and a screening tube; the tail end of the middle tube of the outer tube assembly is connected with a bottom valve assembly, and the bottom valve assembly comprises a connecting sleeve, a bottom valve arranged in the connecting sleeve and a valve ball spring ejection rod device; the lower connector is in threaded connection with the tail end of the connecting sleeve; and the bottom of the screening tube is connected with an ejection rod which can penetrate a center hole of an oil outlet connector to eject a valve ball away from a valve seat. When the rod type oil well pump is applied to oil thermal recovery through steam injection, the discharging and spraying processes are not needed, and the oil exploiting efficiency can be obviously improved.
Description
Technical field
The present invention relates to a kind of rod-type pumping unit, concretely relate to a kind of thickened oil recovery rod-type pumping unit.
Background technology
China's viscous crude resource distribution is very wide, and rich reserves, wherein land viscous crude accounts for the 20% of petroleum resources.Current thickened oil recovery mainly has the modes such as oil recovery by heating, chemical recovery and biological method oil recovery.Steam injection oil recovery by heating is the major way of thickened oil recovery, and the process of heat extraction by steam injection mainly has steam injection, boils in a covered pot over a slow fire well, open flow and open and take out several stage.For most wells, after steam injection, borehole pressure remains high, during stewing well, pressure height and diffusion are poor, cause that in well, crude oil is sprayed to well by well head when open flow, waste petroleum resources on the one hand, pollute environment, the petroleum injection additionally during open flow with elevated pressures will also result in potential safety hazard to well, above-mentioned harm is produced during in order to avoid open flow, it is presently mainly employing and extends the stewing well time, make borehole pressure slowly be down to below safe pressure and carry out open flow, exploitation again, but so can significantly postpone the recovery time of oil, cause production efficiency degradation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of thickened oil recovery rod-type pumping unit, when apply heat extraction by steam injection oil of the present invention, through open flow process, can directly need not pump operation in stewing well a period of time, oil exploitation efficiency height.
For solving above-mentioned technical problem, the thickened oil recovery rod-type pumping unit of the present invention, including outer pipe assembly and the oil rig assembly being placed in outer pipe assembly, described outer pipe assembly includes upper limit supporting seat, outer tube, intervalve and lower contact, top connection is passed through threaded between upper limit supporting seat and outer tube, threaded by transition joint between outer tube and intervalve；Described oil rig assembly includes valve rod assembly, top mechanism locking device, assembly for plunger, standing valve assembly and screen casing, valve rod assembly has valve rod, valve rod is arranged with stem guiding set near valve stem connection position, outer end, the intervalve end of described outer pipe assembly is connected with bottom valve assembly, and this bottom valve assembly includes connecting sleeve pipe, is placed in the bottom valve and valve ball spring spindle device that connect in sleeve pipe；Described bottom valve includes valve body connector, is positioned at valve seat and the valve ball of valve body connector inwall, the two ends of valve body connector respectively be connected sleeve pipe and described intervalve is threaded, valve body connector is connected with the delivery connection with centre bore towards the side of intervalve, opposite side is connected with oil-feed valve bonnet, and described valve ball is positioned at oil-feed valve bonnet；Described valve ball spring spindle device include one end through described oil-feed valve bonnet can by the core bar on described valve ball top to seating position, be set in that core bar is outside and the core bar fairlead threaded with described oil-feed valve bonnet and the righting-oriented set that is connected with core bar fairlead end thread, described core bar is arranged with back-moving spring, one end of back-moving spring is fixed on core bar, and the other end is connected with described righting-oriented set；Described lower contact connects with the described end thread being connected sleeve pipe；The bottom of described screen casing is connected with the centre bore that may pass through described delivery connection and described valve ball is lifted off the push rod of valve seat.
Adopt the thickened oil recovery rod-type pumping unit of said structure, when needs heat extraction by steam injection, first described oil rig assembly is proposed in described outer pipe assembly, now the core bar in described bottom valve assembly by sheathed back-moving spring on core bar and oil reservoir differential pressure action described valve ball top to valve seat, bottom valve closedown；During steam injection, when the steam pressure in oil pipe reaches certain value, act on making every effort to overcome on valve ball and take the active force promotion valve ball of back-moving spring and oil reservoir pressure reduction, bottom valve is opened, steam injects shaft bottom oil reservoir, and after having noted steam, bottom valve is again switched off under back-moving spring and oil reservoir differential pressure action.After stewing well a period of time, can directly described oil rig assembly be entered in outer pipe assembly under oil pipe, when oil rig assembly is close to outer pipe assembly, close well mouth of oil well seal box, when oil rig assembly enters in outer pipe assembly completely down, the push rod being connected with bottom described screen casing is lifted off valve seat through the centre bore of described delivery connection described valve ball, and now the present invention can carry out oil extraction operation, the present invention extracts oil through open flow process, need not be remarkably improved oil exploitation efficiency；In oil extraction process, steam is extracted out through oil pipe with oil, will not be sprayed onto outside well, thus not resulting in the waste of environmental pollution and crude oil.
Improvement as the present invention, the inwall being positioned at described upper limit supporting seat top is provided with annular slot, the end of described stem guiding set is provided with top limit spring set, and when entering in outer pipe assembly under described oil rig is always integral, top limit spring set can snap onto on annular slot.After adopting above-mentioned technical characteristic, when oil rig assembly is lowered in outer pipe assembly through oil pipe, the top limit spring set of first described stem guiding set end can snap onto in described annular slot, now aboveground operator close well mouth of oil well seal box, can effectively preventing from causing that because oil rig enters outer pipe assembly completely down oil is subject to the potential safety hazard caused outside down-hole high pressure vapor action ejection well, conducting oneself with dignity again through sucker rod after closing well head seal box and applying corresponding external force to sucker rod makes oil rig be fully contemplated in outer pipe assembly.
As a further improvement on the present invention, the bottom of described standing valve assembly is connected with the seal sleeve matched with described transition joint, and the barrel of seal sleeve is interval with sealing cup, and described screen casing is connected with the end of seal sleeve.After adopting above-mentioned technical characteristic, it is possible to improve the sealing reliability between oil rig assembly and the outer pipe assembly in the present invention further.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the sectional structure schematic diagram of a kind of thickened oil recovery rod-type pumping unit of the present invention.
Fig. 2 is that along Fig. 1, A-A, B-B, line C-C fragment into the structural representation after four parts the thickened oil recovery rod-type pumping unit shown in Fig. 1 from the angle being easy to see figure in 1 structure everywhere.
Fig. 3 is I place structure enlarged diagram in Fig. 1.
Fig. 4 is II place structure enlarged diagram in Fig. 1.
Detailed description of the invention
Referring to Fig. 1-Fig. 4, one thickened oil recovery rod-type pumping unit of the present invention, including outer pipe assembly and the oil rig assembly being placed in outer pipe assembly, described outer pipe assembly includes upper limit supporting seat 10, outer tube 11, intervalve 12 and lower contact 13, top connection 14 is passed through threaded between upper limit supporting seat 10 and outer tube 11, threaded by transition joint 15 between outer tube 11 and intervalve 12；Described oil rig assembly includes valve rod assembly 20, top mechanism locking device 21, assembly for plunger 22, standing valve assembly 23 and screen casing 24, valve rod assembly 20 has valve rod 201, valve rod 201 is arranged with stem guiding set 203 near outer end valve stem connection 202 position, intervalve 12 end of described outer pipe assembly is connected with bottom valve assembly, and this bottom valve assembly includes connecting sleeve pipe 30, is placed in the bottom valve 31 and valve ball spring spindle device 32 that connect in sleeve pipe 30；Described bottom valve 31 includes valve body connector 310, is positioned at valve seat 311 and the valve ball 312 of valve body connector 310 inwall, the two ends of valve body connector 310 respectively be connected sleeve pipe 30 and described intervalve 12 is threaded, valve body connector 310 is connected with the delivery connection 314 with centre bore 313 towards the side of intervalve 12, opposite side is connected with oil-feed valve bonnet 315, and described valve ball 312 is positioned at oil-feed valve bonnet 315；Described valve ball spring spindle device 32 includes the righting-oriented set 323 that described valve ball 312 can be pushed up the core bar 321 to valve seat 311 position through described oil-feed valve bonnet 315, be set in core bar 321 outside and the core bar fairlead 322 threaded with described oil-feed valve bonnet 315 and be connected with core bar fairlead 322 end thread by one end, described core bar 321 is arranged with back-moving spring 324, one end of back-moving spring 324 is fixed on core bar 321, and the other end overlaps 323 with described righting-oriented and is connected；Described lower contact 13 connects with the described end thread being connected sleeve pipe 30；The bottom of described screen casing 24 is connected with the described valve ball 312 of centre bore 313 that may pass through described delivery connection 314 and is lifted off the push rod 241 of valve seat 311.The inwall being positioned at described upper limit supporting seat 10 top is provided with annular slot 9, the end of described stem guiding set 203 is provided with top limit spring set 8, when entering in outer pipe assembly under described oil rig is always integral, top limit spring set 8 can snap onto on annular slot 9.The bottom of described standing valve assembly 23 is connected with the seal sleeve 7 matched with described transition joint 15, and the barrel of seal sleeve 7 is interval with sealing cup 6, and described screen casing 24 is connected with the end of seal sleeve 7.
Claims (3)
1. a thickened oil recovery rod-type pumping unit, including outer pipe assembly and the oil rig assembly being placed in outer pipe assembly, described outer pipe assembly includes upper limit supporting seat (10), outer tube (11), intervalve (12) and lower contact (13), top connection (14) is passed through threaded between upper limit supporting seat (10) and outer tube (11), threaded by transition joint (15) between outer tube (11) and intervalve (12)；Described oil rig assembly includes valve rod assembly (20), top mechanism locking device (21), assembly for plunger (22), standing valve assembly (23) and screen casing (24), valve rod assembly (20) has valve rod (201), valve rod (201) is arranged with stem guiding set (203) near valve stem connection (202) position, outer end, it is characterized in that: intervalve (12) end of described outer pipe assembly is connected with bottom valve assembly, this bottom valve assembly includes connecting sleeve pipe (30), is placed in the bottom valve (31) and valve ball spring spindle device (32) that connect in sleeve pipe (30)；Described bottom valve (31) includes valve body connector (310), is positioned at valve seat (311) and the valve ball (312) of valve body connector (310) inwall, the two ends of valve body connector (310) respectively be connected sleeve pipe (30) and described intervalve (12) is threaded, valve body connector (310) is connected with the delivery connection (314) with centre bore (313) towards the side of intervalve (12), opposite side is connected with oil-feed valve bonnet (315), and described valve ball (312) is positioned at oil-feed valve bonnet (315)；Described valve ball spring spindle device (32) includes one end can by the core bar (321) on described valve ball (312) top to valve seat (311) position through described oil-feed valve bonnet (315), it is set in core bar (321) outside and the core bar fairlead (322) threaded with described oil-feed valve bonnet (315) and the righting-oriented set (323) being connected with core bar fairlead (322) end thread, described core bar (321) is arranged with back-moving spring (324), one end of back-moving spring (324) is fixed on core bar (321), the other end is connected with described righting-oriented set (323)；Described lower contact (13) connects with the described end thread being connected sleeve pipe (30)；The bottom of described screen casing (24) is connected with the centre bore (313) that may pass through described delivery connection (314) and described valve ball (312) is lifted off the push rod (241) of valve seat (311).
2. thickened oil recovery rod-type pumping unit as claimed in claim 1, it is characterized in that: the inwall being positioned at described upper limit supporting seat (10) top is provided with annular slot (9), the end of described stem guiding set (203) is provided with top limit spring set (8), when entering in outer pipe assembly under described oil rig is always integral, top limit spring set (8) can snap onto on annular slot (9).
3. thickened oil recovery rod-type pumping unit as claimed in claim 1 or 2, it is characterized in that: the bottom of described standing valve assembly (23) is connected with the seal sleeve (7) matched with described transition joint (15), being interval with sealing cup (6) on the barrel of seal sleeve (7), described screen casing (24) is connected with the end of seal sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610271281.3A CN105781950B (en) | 2016-04-28 | 2016-04-28 | Rod type oil well pump for thickened oil exploiting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610271281.3A CN105781950B (en) | 2016-04-28 | 2016-04-28 | Rod type oil well pump for thickened oil exploiting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105781950A true CN105781950A (en) | 2016-07-20 |
| CN105781950B CN105781950B (en) | 2017-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610271281.3A Active CN105781950B (en) | 2016-04-28 | 2016-04-28 | Rod type oil well pump for thickened oil exploiting |
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| CN (1) | CN105781950B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393928A (en) * | 1981-08-27 | 1983-07-19 | Warnock Sr Charles E | Apparatus for use in rejuvenating oil wells |
| CN2737986Y (en) * | 2004-09-18 | 2005-11-02 | 胜利油田高原泵业有限责任公司 | Injection and extraction integrated oil-well pump |
| CN101526079A (en) * | 2009-04-07 | 2009-09-09 | 潘昌德 | Multifunctional oil-extraction and gas-injection integrated oil well pump for sanding heavy crude oil well |
| CN201982285U (en) * | 2011-03-16 | 2011-09-21 | 天津市大港区龙新石油机械制造有限公司 | Soft seal plunger oil well pump |
| WO2015196287A1 (en) * | 2014-06-25 | 2015-12-30 | Raise Production Inc. | Rod pump system |
| CN205714694U (en) * | 2016-04-28 | 2016-11-23 | 铁岭中油机械设备制造有限公司 | A kind of thickened oil recovery rod-type pumping unit |
-
2016
- 2016-04-28 CN CN201610271281.3A patent/CN105781950B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393928A (en) * | 1981-08-27 | 1983-07-19 | Warnock Sr Charles E | Apparatus for use in rejuvenating oil wells |
| CN2737986Y (en) * | 2004-09-18 | 2005-11-02 | 胜利油田高原泵业有限责任公司 | Injection and extraction integrated oil-well pump |
| CN101526079A (en) * | 2009-04-07 | 2009-09-09 | 潘昌德 | Multifunctional oil-extraction and gas-injection integrated oil well pump for sanding heavy crude oil well |
| CN201982285U (en) * | 2011-03-16 | 2011-09-21 | 天津市大港区龙新石油机械制造有限公司 | Soft seal plunger oil well pump |
| WO2015196287A1 (en) * | 2014-06-25 | 2015-12-30 | Raise Production Inc. | Rod pump system |
| CN205714694U (en) * | 2016-04-28 | 2016-11-23 | 铁岭中油机械设备制造有限公司 | A kind of thickened oil recovery rod-type pumping unit |
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| Publication number | Publication date |
|---|---|
| CN105781950B (en) | 2017-05-03 |
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