CN201858128U - Oil well pump of horizontal heavy oil well - Google Patents
Oil well pump of horizontal heavy oil well Download PDFInfo
- Publication number
- CN201858128U CN201858128U CN2010205794512U CN201020579451U CN201858128U CN 201858128 U CN201858128 U CN 201858128U CN 2010205794512 U CN2010205794512 U CN 2010205794512U CN 201020579451 U CN201020579451 U CN 201020579451U CN 201858128 U CN201858128 U CN 201858128U
- Authority
- CN
- China
- Prior art keywords
- plunger
- joint
- oil
- pump barrel
- pump
- 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.)
- Expired - Lifetime
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 23
- 239000000295 fuel oil Substances 0.000 title abstract 2
- 210000002445 nipple Anatomy 0.000 claims abstract description 11
- 239000004576 sand Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007667 floating Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses an oil well pump of a horizontal heavy oil well, which comprises an upper pump cylinder (1), a lower pump cylinder (2), a pump cylinder upper joint (3), a pump cylinder lower joint (4), a plunger piston pull rod (7), an upper floating plunger piston (8), a lower sealing plunger piston (9) and a middle plunger piston pull rod (29), wherein an upper righting joint (11) is arranged at the upper end of the plunger piston pull rod (7), the lower end of the plunger piston pull rod (7) is connected with the middle plunger piston pull rod (29) through a mechanical forced valve ball (28) and a middle righting joint (12), the middle plunger piston pull rod (29) is connected with a lower righting joint (13), a connecting pipe (14) in a cavity of a nipple (15) is connected with the lower righting joint (13) through an oil inlet valve (20), the connecting pipe (14) is connected with the lower sealing plunger piston (9), and a gap bridge upper joint (5) and a gap bridge lower joint (6) are in threaded connection with an upper gap bridge outer pipe (10). The oil well pump has high strength and long service life and can avoid clamping the pump.
Description
Technical field
The utility model relates to a kind of improvement of horizontal oil well pump, and specifically a kind of thick oil horizontal well oil well pump is applicable to inclined shaft, directional well and high-inclination horizontal well, can realize the effective exploitation to high viscosity oil.
Background technique
In the oil recovery process of oil field, usually to beat some inclined shafts, directional well and high-inclination horizontal well, because the standing valve valve ball of conventional oil well pump below moves along the pump barrel axial direction, in horizontal well, the valve ball valve seat position that can't fall back, ball valve sets hysteresis in inclined shaft, high-inclination horizontal well, poorly sealed, causes oil well pump to use.A kind of high-inclination horizontal well oil pump is also arranged at present, Chinese patent application by Jinchang sky proposition: 200610135001.2, its deficiency is: its fluid supply capacity is restricted, and can't use at horizontal segment, can not realize that in addition fixed tubular column can carry out steam injection thermal recovery, inapplicable thickened oil recovery.
Summary of the invention
It is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, forced opening-closing in time, reliably, plunger is descending fast, can use pump efficiency height, anti-eccentric wear in big gradient and horizontal segment, the intensity height, preventing sanding in does not have standing valve on pump barrel, motionless oil pipe tubing string can realize that gas injecting mining, test reach the thick oil horizontal well oil well pump from oil draining function to thick oil well.
In order to reach above purpose, the technological scheme that the utility model adopted is: this thick oil horizontal well oil well pump, comprise pump barrel, following pump barrel, the pump barrel upper connection, the pump barrel lower contact, the plunger pull bar, plunger floats on top, lower seal plunger and middle part plunger pull bar, on the last pump barrel, the lower end is threaded respectively and goes up the pump barrel upper connection, the pump barrel lower contact, link to each other with oil pipe during pump barrel upper connection operation, plunger floats on plunger pull bar peripheral hardware top, the unsteady plunger in top is located in the pump barrel chamber, the pump barrel lower contact is threaded by pipe nipple and goes up the gap bridge upper connection, on the following pump barrel, following two ends are threaded with gap bridge upper connection and gap bridge lower contact respectively, in the chamber of following pump barrel, be provided with the lower seal plunger, be provided with guiding in the lower end of lower seal plunger stifled, it is characterized in that: the upper end of plunger pull bar is provided with sets upright joint, on set upright upper end of joint and connect sucker rod, the lower end of plunger pull bar is set upright joint by mechanical forced valve ball and centre and is connected with middle part plunger pull bar, the lower end of middle part plunger pull bar with under set upright joint and be connected, in the pipe nipple chamber, be provided with connecting tube, the upper end of connecting tube by oiling valve with under set upright joint and be connected, the lower end of connecting tube is connected with the lower seal plunger, cavity between connecting tube and the pipe nipple is annular pump chamber, goes up the gap bridge outer tube between gap bridge upper connection and the gap bridge lower contact by being threaded.
The utility model is also implemented by following measure: described oiling valve, comprise the oil-feed valve bonnet, set upright position-limited lever, oil-feed valve seat, Returnning spring, oil-feed valve ball, valve base joint and movable joint, valve base joint is threaded with the upper end of connecting tube, set upright in the chamber that position-limited lever is located at the oil-feed valve bonnet, Returnning spring is set in to be set upright on the position-limited lever, and the upper end of oil-feed valve bonnet is provided with movable joint.
The upper end-hole of the unsteady plunger in described top is provided with the angle of strike-ofing along the place, along go up the sand washing valve bonnet by being threaded, is provided with the mechanical forced valve seat with the corresponding position of mechanical forced valve ball on the unsteady plunger in top in it.
Set upright on described joint, centre set upright joint and under set upright joint and be provided with left-handed runner.
Described gap bridge upper connection lower end is provided with internal whorl and external screw-thread, and internal whorl connects down pump barrel, and external screw-thread is taken over the bridge outer tube.
The beneficial effects of the utility model are: compare with the horizontal oil well pump of present use, forced opening-closing is timely, reliable, and plunger is descending fast, pump efficiency height, anti-eccentric wear, intensity height, preventing sanding in, long service life; Have simultaneously from oil draining function, need not to adorn drainage device, motionless oil pipe tubing string can be realized gas injecting mining to thick oil well.
Description of drawings
Fig. 1 is the structure cross-sectional schematic along central axis of the present utility model;
Fig. 2 analyses and observe enlarged diagram for setting upright joint on of the present utility model along the structure of central axis;
Fig. 3 sets upright joint for centre of the present utility model and analyses and observe enlarged diagram along the structure of central axis;
Fig. 4 analyses and observe enlarged diagram for the position-limited lever of setting upright of the present utility model along the structure of central axis;
Fig. 5 analyses and observe enlarged diagram for mechanical forced valve ball of the present utility model along the structure of central axis;
Fig. 6 analyses and observe enlarged diagram for oiling valve of the present utility model along the structure of central axis.
Among the figure: 1, go up pump barrel; 2, following pump barrel; 3, pump barrel upper connection; 4, pump barrel lower contact; 5, gap bridge upper connection; 6, gap bridge lower contact; 7, plunger pull bar; 8, the unsteady plunger in top; 9, lower seal plunger; 10, gap bridge outer tube; 11, set upright joint on; 12, joint is set upright in the centre; 13, set upright joint down; 14, connecting tube; 15, pipe nipple; 16, guiding is stifled; 17, sand washing valve bonnet; 18 angles of strike-ofing; 19, annular pump chamber; 20, oiling valve; 21, mechanical forced valve seat; 22, oil-feed valve bonnet; 23, set upright position-limited lever; 24, oil-feed valve seat; 25, Returnning spring; 26, oil-feed valve ball; 27, valve base joint; 28, mechanical forced valve ball; 29, middle part plunger pull bar; 30, movable joint.
Embodiment
Make the utility model with reference to accompanying drawing 1,2,3,4,5,6.This thick oil horizontal well oil well pump, comprise pump barrel 1, following pump barrel 2, pump barrel upper connection 3, pump barrel lower contact 4, plunger pull bar 7, plunger 8 floats on top, lower seal plunger 9 and middle part plunger pull bar 29, on the last pump barrel 1, the lower end is threaded respectively and goes up pump barrel upper connection 3, pump barrel lower contact 4, link to each other with oil pipe during pump barrel upper connection 3 operations, plunger 8 floats on plunger pull bar 7 peripheral hardware tops, the unsteady plunger 8 in top is located in pump barrel 1 chamber, pump barrel lower contact 4 is threaded by pipe nipple 15 and goes up gap bridge upper connection 5, on the following pump barrel 2, following two ends are threaded with gap bridge upper connection 5 and gap bridge lower contact 6 respectively, in the chamber of following pump barrel 2, be provided with lower seal plunger 9, be provided with guiding stifled 16 in the lower end of lower seal plunger 9, it is characterized in that: the upper end of plunger pull bar 7 is provided with sets upright joint 11, on set upright joint 11 upper ends and connect sucker rod, the lower end of plunger pull bar 7 is set upright joint 12 by mechanical forced valve ball 28 and centre and is connected with middle part plunger pull bar 29, the lower end of middle part plunger pull bar 29 with under set upright joint 13 and be connected, in pipe nipple 15 chambeies, be provided with connecting tube 14, the upper end of connecting tube 14 by oiling valve 20 with under set upright joint 13 and be connected, the lower end of connecting tube 14 is connected with lower seal plunger 9, cavity between connecting tube 14 and the pipe nipple 15 is annular pump chamber 19, go up gap bridge outer tube 10 between gap bridge upper connection 5 and the gap bridge lower contact 6 by being threaded, so that protection is pump barrel 2 down, when up stroke, fluid is by connecting tube 14, oiling valve 20 enters annular pump chamber 19; During down stroke, plunger pull bar 7 is descending, and mechanical forced valve ball 28 is opened, and oil-feed valve ball 26 sets, and the fluid in the annular pump chamber 19 is discharged into oil pipe, and simultaneously, the action of gravity of oil pipe fluid column is on lower seal plunger 9, and acceleration lower seal plunger 9 is descending, prevents eccentric wear.
Described oiling valve 20, comprise oil-feed valve bonnet 22, set upright position-limited lever 23, oil-feed valve seat 24, Returnning spring 25, oil-feed valve ball 26, valve base joint 27 and movable joint 30, valve base joint 27 is threaded with the upper end of connecting tube 14, set upright in the chamber that position-limited lever 23 is located at oil-feed valve bonnet 22, Returnning spring 25 is set in to be set upright on the position-limited lever 23, the upper end of oil-feed valve bonnet 22 is provided with movable joint 30, so that oil-feed valve bonnet 22 is connected with the following joint 13 of setting upright of plunger pull bar 29 lower ends, middle part by movable joint 30, during down stroke, plunger pull bar 7 is descending, the movable joint 30 that is attached thereto promotes to set upright position-limited lever 23, assist Returnning spring 25, force oil-feed valve ball 26 to set fast, set upright position-limited lever 23 simultaneously and can prevent that Returnning spring 25 from being pressed also at work repeatedly, avoid damaging.
The upper end-hole of the unsteady plunger 8 in described top is provided with the angle 18 of strike-ofing along the place, sand washing valve bonnet 17 is gone up on edge in it by being threaded, on the unsteady plunger 8 in top, be provided with mechanical forced valve seat 21 with mechanical forced valve ball 28 corresponding positions, since on set upright joint 11, plunger pull bar 7, mechanical forced valve ball 28, joint 12 is set upright in the centre, under set upright joint 13 and link to each other, sand washing valve bonnet 17 with plunger pull bar 7 outsides, plunger 8 floats on top, the unsteady plunger of mechanical forced valve seat 21 common formation two-stages, in the work, plunger pull bar 7 is with on the sucker rod, following to-and-fro motion, force mechanical forced valve ball 28 to set fast, open, during up stroke, plunger 8 upper end-hole are floated on top can be to the sand of pump barrel inwall along the angle of locating 18 of strike-ofing, dirt and foreign material scrape, during down stroke, taken away by liquid stream.
Setting upright joint 11, centre on described sets upright joint 12, sets upright joint 13 down and be provided with left-handed runner, both guaranteed that good height set upright effect, can prevent sucker rod screw thread back-off phenomenon again, in the work, liquid stream is along left-handed runner, by the annular space of the unsteady plunger 8 in top, enter oil pipe with plunger pull bar 7.
Described gap bridge upper connection 5 lower ends are provided with internal whorl and external screw-thread, and internal whorl connects down pump barrel 2, and external screw-thread is taken over bridge outer tube 10, when big gradient section and horizontal segment use, can effectively prevent down pump barrel 2 bending deflections like this, avoid holddown.
When using the utility model operation, pump barrel upper connection 3 links to each other with oil pipe, on set upright termination sucker rod on the joint 11, since on set upright joint 11, plunger pull bar 7, mechanical forced valve ball 28, centre and set upright joint 12, set upright joint 13 down and link to each other, floating with sand washing valve bonnet 17, the top of plunger pull bar 7 outsides, plunger 8, mechanical forced valve seat 21 are common to constitute the two-stages plunger that floats; When upstroke, plunger pull bar 7 drives 28 sealings of mechanical forced valve ball, and annular pump chamber 19 increases, and pressure reduces, and under the effect of oil well submergence pressure, Returnning spring 25 is compressed, and oiling valve 20 is opened, and fluid enters annular pump chamber 19; When down stroke, plunger pull bar 7 is descending, mechanical forced valve ball 28 is opened, oiling valve 20 cuts out under movable joint 30, Returnning spring 25 and the effect of oil pipe fluid column, pump chamber fluid enters oil pipe, head of liquid was applied on the plunger (being feedback force) and forced plunger to overcome resistance and descending in the oil pipe because oiling valve 20 cuts out this moment.
The utility model moves up and down by plunger pull bar 7, and forced opening-closing makes keying more timely, more reliable; Oiling valve 20 adopts guiding ribs and increases Returnning spring 25 structures, and it is little that oil-feed valve ball 26 radially wobbles amplitude, and timely return under Returnning spring 25 effects has solved oiling valve 20 and set hysteresis in inclined shaft, high-inclination horizontal well, poorly sealed problem; It is up that sucker rod drives the unsteady plunger 8 in top by plunger pull bar 7, mechanical forced valve ball 28, plunger pull bar 7 by on set upright joint 11, centre and set upright joint 12, set upright joint 13 down and set upright, the unsteady plunger 8 in top can rotate relative to plunger pull bar 7 simultaneously, avoid the directly oblique portion's of pulling on plunger 8 that floats of sucker rod, cause pump barrel 1, unsteady plunger 8 eccentric wears in top to pull; When the plunger 8 of floating on top is descending, oil-feed valve ball 26 sets, and lower seal plunger 9 bears the action of gravity of oil pipe fluid column, and it is descending to accelerate lower seal plunger 9, prevent in horizontal well and thick oil well, because of resistance is big, frictional force is big, causes the 9 descending hysteresis of lower seal plunger, reduce loss of plunger stroke, improve pump efficiency, stretching sucker rod prevents eccentric wear between sucker rod and the oil pipe; Protect at the following outer gap bridge outer tube 10 that increases of pump barrel 2, prevent hole deviation section or horizontal segment because of under pump barrel 2 sagging and in service pump barrels 2 down and oil well inner sleeve generation frictional vibration cause and be out of shape holddown; The cup-shaped angle 18 of strike-ofing is processed in float on the top upper end portion of plunger 8, and sand washing valve bonnet 17 oil outlets are positioned at the cup-shaped angle 18 of strike-ofing, and are in service, strike-off angle 18 can be deposited on pump barrel 1 inwall sand, dirt scrapes, washed away by liquid stream when descending and take out of; The position-limited lever 23 of setting upright in the oil-feed valve bonnet 22 is in operation, set upright that the step surface of position-limited lever 23 is up to be contacted with oil-feed valve bonnet 22, Returnning spring 25 is not pressed also in compression, do not bear the impact that causes when oil-feed valve ball 26 takeoffs repeatedly, guarantee that 25 life-spans of Returnning spring reach usage requirement; Set upright joint 12, set upright joint 13 surface Machining down and become the levoform runner at the last joint 11, centre set upright, both guaranteed enough area of passages, improve greatly again and set upright effect, prevent screw thread back-off phenomenon; When the unsteady plunger 8 in the moving top of belt on the plunger pull bar 7 proposes to go up pump barrel 1, can realize oil draining function, need not to adorn drainage device, in addition, can promptly realize gas injecting mining by motionless oil pipe tubing string to thick oil well.
Claims (5)
1. thick oil horizontal well oil well pump, comprise pump barrel (1), following pump barrel (2), pump barrel upper connection (3), pump barrel lower contact (4), plunger pull bar (7), plunger (8) floats on top, lower seal plunger (9) and middle part plunger pull bar (29), on the last pump barrel (1), the lower end is threaded respectively and goes up pump barrel upper connection (3), pump barrel lower contact (4), plunger (8) floats on plunger pull bar (7) peripheral hardware top, the top plunger (8) that floats is located in pump barrel (1) chamber, pump barrel lower contact (4) is threaded by pipe nipple (15) and goes up gap bridge upper connection (5), on the following pump barrel (2), following two ends are threaded with gap bridge upper connection (5) and gap bridge lower contact (6) respectively, in the chamber of following pump barrel (2), be provided with lower seal plunger (9), be provided with guiding stifled (16) in the lower end of lower seal plunger (9), it is characterized in that: the upper end of plunger pull bar (7) is provided with sets upright joint (11), on set upright joint (11) upper end and connect sucker rod, the lower end of plunger pull bar (7) is set upright joint (12) by mechanical forced valve ball (28) and centre and is connected with middle part plunger pull bar (29), the lower end of middle part plunger pull bar (29) with under set upright joint (13) and be connected, in pipe nipple (15) chamber, be provided with connecting tube (14), the upper end of connecting tube (14) by oiling valve (20) with under set upright joint (13) and be connected, the lower end of connecting tube (14) is connected with lower seal plunger (9), cavity between connecting tube (14) and the pipe nipple (15) is annular pump chamber (19), goes up gap bridge outer tube (10) between gap bridge upper connection (5) and the gap bridge lower contact (6) by being threaded.
2. thick oil horizontal well oil well pump according to claim 1, it is characterized in that: described oiling valve (20), comprise oil-feed valve bonnet (22), set upright position-limited lever (23), oil-feed valve seat (24), Returnning spring (25), oil-feed valve ball (26), valve base joint (27) and movable joint (30), valve base joint (27) is threaded with the upper end of connecting tube (14), setting upright position-limited lever (23) is located in the chamber of oil-feed valve bonnet (22), Returnning spring (25) is set in to be set upright on the position-limited lever (23), and the upper end of oil-feed valve bonnet (22) is provided with movable joint (30).
3. thick oil horizontal well oil well pump according to claim 1, it is characterized in that: the float upper end-hole of plunger (8) of described top is provided with the angle of strike-ofing (18) along the place, along going up sand washing valve bonnet (17) by being threaded, the plunger (8) that floats on top goes up and the corresponding position of mechanical forced valve ball (28) is provided with mechanical forced valve seat (21) in it.
4. thick oil horizontal well oil well pump according to claim 1 is characterized in that: set upright on described joint (11), centre set upright joint (12) and under set upright joint (13) and be provided with left-handed runner.
5. thick oil horizontal well oil well pump according to claim 1 is characterized in that: described gap bridge upper connection (5) lower end is provided with internal whorl and external screw-thread, and internal whorl connects down pump barrel (2), and external screw-thread is taken over bridge outer tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205794512U CN201858128U (en) | 2010-10-28 | 2010-10-28 | Oil well pump of horizontal heavy oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205794512U CN201858128U (en) | 2010-10-28 | 2010-10-28 | Oil well pump of horizontal heavy oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858128U true CN201858128U (en) | 2011-06-08 |
Family
ID=44103936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205794512U Expired - Lifetime CN201858128U (en) | 2010-10-28 | 2010-10-28 | Oil well pump of horizontal heavy oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858128U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542439A (en) * | 2022-02-21 | 2022-05-27 | 山东立鑫石油机械制造有限公司 | Double acting fixed valve oil pump for super heavy oil horizontal well |
| CN116044700A (en) * | 2022-11-22 | 2023-05-02 | 中船重工中南装备有限责任公司 | Linear motor pump for horizontal well |
| WO2024045690A1 (en) * | 2022-09-01 | 2024-03-07 | 邹淑君 | Movable joint-based double plunger pump |
-
2010
- 2010-10-28 CN CN2010205794512U patent/CN201858128U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542439A (en) * | 2022-02-21 | 2022-05-27 | 山东立鑫石油机械制造有限公司 | Double acting fixed valve oil pump for super heavy oil horizontal well |
| CN114542439B (en) * | 2022-02-21 | 2024-02-23 | 山东立鑫石油机械制造有限公司 | Double-acting fixed valve oil pump for super heavy oil horizontal well |
| WO2024045690A1 (en) * | 2022-09-01 | 2024-03-07 | 邹淑君 | Movable joint-based double plunger pump |
| CN116044700A (en) * | 2022-11-22 | 2023-05-02 | 中船重工中南装备有限责任公司 | Linear motor pump for horizontal well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201858128U (en) | Oil well pump of horizontal heavy oil well | |
| CN104594847B (en) | A switch type tube pump plug | |
| CN104912782B (en) | Combined pump barrel small diameter oil well pump | |
| CN204163964U (en) | Ring valve type hydraulic feedback oil | |
| CN201517498U (en) | Rubber bobbin plunger piston | |
| CN202991456U (en) | Novel inclined shaft thick oil pump | |
| CN219061959U (en) | Double-plunger test combined pump | |
| CN203297087U (en) | Efficient protective oil pumping device | |
| CN201531398U (en) | Anti-sway wear-pump oil pump | |
| CN210135071U (en) | Flexible metal oil well pump device in horizontal well and resetting device of fixed valve ball | |
| CN211174070U (en) | Injection-production blowout-prevention oil well pump | |
| CN201381812Y (en) | Well flushing tool | |
| CN210798932U (en) | Pumping-assisting device for sucker rod of oil production well | |
| CN202531415U (en) | Ф25mm small displacement solid plunger oil well pump | |
| CN201326535Y (en) | Double-plunger suspended anti-airlock oil pump | |
| CN200952463Y (en) | Hanging immersed thickened oil pump | |
| CN101539133B (en) | Feedback type oil-well pump | |
| CN103174630A (en) | Horizontal sand prevention vicious pump | |
| CN114562448B (en) | Multi-section plunger oil pump for heavy oil extraction | |
| CN112594174A (en) | Oil-well pump for oil pumping machine to exploit petroleum and natural gas | |
| CN111852844A (en) | Resetting device for flexible metal oil pump device and fixed valve ball in horizontal well | |
| CN220015130U (en) | Vibration negative pressure and medicament composite blocking removing device | |
| CN2451758Y (en) | Plunger hanging load type oil-well pump | |
| CN102704877A (en) | Composite anti-blockage device | |
| CN222976961U (en) | Hydraulic drive differential drainage pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Weima pumps manufacturing Co. Assignor: Ma Baozhong Contract record no.: 2012370000129 Denomination of utility model: Oil well pump of horizontal heavy oil well Granted publication date: 20110608 License type: Exclusive License Record date: 20120428 |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG WEIMA PUMPS MANUFACTURING CO., LTD. Free format text: FORMER OWNER: MA BAOZHONG Effective date: 20140512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 271100 LAIWU, SHANDONG PROVINCE TO: 271199 LAIWU, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140512 Address after: 271199 intersection of Yuntai Mountain Road and Panlong River Street, Laiwu hi tech Zone, Shandong Patentee after: SHANDONG WEIMA PUMP MANUFACTURING CO., LTD. Address before: 271100 Shandong Province, Laiwu city high tech development zone plate dragon river Street No. 007 Shandong Weima pumps manufacturing Co. Patentee before: Ma Baozhong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |