CN203394717U - Tandem long plunger rod type oil-well pump of travelling valve - Google Patents
Tandem long plunger rod type oil-well pump of travelling valve Download PDFInfo
- Publication number
- CN203394717U CN203394717U CN201320414239.4U CN201320414239U CN203394717U CN 203394717 U CN203394717 U CN 203394717U CN 201320414239 U CN201320414239 U CN 201320414239U CN 203394717 U CN203394717 U CN 203394717U
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- pump
- leather cup
- oil
- valve
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Abstract
The utility model discloses a tandem long plunger rod type oil-well pump of a travelling valve, which is designed to improve the pump efficiency and meet the development requirement of a low-permeability oil field. The oil-well pump consists of an oil pump supporting device and a pump body, wherein an oil pipe and a lower joint are respectively connected to the two ends of an upper joint of the supporting device and are sealed by a sealing seat ring; a valve cover and a two-grade closed travelling valve are respectively connected to the two ends of a long plunger of the pump body; a guide sleeve sleeved on the long plunger is connected with a mechanical core shaft; a clamping sleeve is sleeved on the mechanical core shaft; the mechanical core shaft is connected with a leather cup core shaft; a leather cup, a leather cup seat ring and a leather cup pressing cap are sequentially sleeved on the leather cup core shaft; the bottom end of the leather cup core shaft is connected with a short pump cylinder; the short pump cylinder is connected with a lower pump cylinder; the lower pump cylinder is connected with an oil-inlet valve. The oil-well pump is reasonable in structure, reliable in performance and high in practicability, underground crude oil can be extracted out, the pump efficiency is improved, the development requirement of the low-permeability oil field is met, the pump detecting period of a production oil well can be prolonged, the labor intensity for well maintaining and pump detecting operation is reduced, the effect on crude oil production caused by well maintenance for a long time is reduced, and the production cost is reduced.
Description
Technical field
The utility model relates to a kind of traveling valve tandem long-plunger rod-type pumping unit, belongs to petroleum industry mechanical oil recovery technical field.
Background technique
The exploitation difficulty of low permeability oil field is large, and well yield is low, strict to the requirements of type selecting of oil production equipment.Progress along with oil recovery technique, more hyposmosis blocks are successfully developed, conventional oil well pump discharge capacity is large and the low unmatched contradiction of individual well production fluid amount is further outstanding, cause and occurred that pump efficiency is low, oil well pump accelerates the series of problems such as inefficacy, have influence on crude oil and normally exploit, seriously restrict the development of low permeability oil field.These years, in the recovery process of low permeability oil field, also take certain methods to solve the contradiction that oil well pump discharge capacity is large and well production fluid is low, for example, promoted Φ 28mm, Φ 25mm, the Φ 22mm of small pump diameter or the tubing pump of small pump diameter more, obtained good effect.But the drawback that tubing pump exists is exactly that well workover must trip out tubing string while playing pump, the workload that this has just increased workover eration, accounts for the well time long, affects crude output.Yet the small pump diameter rod-type pumping unit designing according to a conventional method, but because the impact of boundary dimension and structure cannot be implemented.
Summary of the invention
The purpose of this utility model is to provide a kind of traveling valve tandem long-plunger rod-type pumping unit, to improve pump efficiency, extends pump detection period, meets the development requires of low permeability oil field.
Concrete technology contents of the present utility model is as follows:
This oil well pump is comprised of bearing device and the pump housing;
Bearing device: upper connection upper end internal thread connected pipes, lower end outside thread connects lower contact, and compression is positioned at the seal holder ring on lower contact inwall step surface;
The pump housing: the long-plunger top valve bonnet that is threaded, bottom connects two-stage closed cage and valve base joint in succession by crossover sub internal thread, is equipped with move about valve ball and the valve seat that moves about in two-stage closed cage; Guide sleeve lower internal thread on suit long-plunger connects the mechanical mandrel on suit long-plunger, and compression is positioned at the sealing seat ring on mechanical mandrel outer wall step; On the outer wall of machinery mandrel bottom, be set with the leather cup mandrel on cutting ferrule outside thread connection suit long-plunger; On the outer wall of leather cup mandrel bottom, be set with successively leather cup, leather cup seat ring and leather cup pressure cap ，Qie bottom and be connected short pump barrel by leather cup joint internal thread, short pump barrel bottom outside thread connects lower pump barrel, and lower pump barrel bottom internal thread connects oiling valve.
This oil well pump is rational in infrastructure, reliable performance, applicability is strong, the downhole crude that can hoist, improves pump efficiency, meets the development requires in ultra-low penetration oil field, can extend the pump detection period of production well, reduce the labor intensity of well repairing and pump checking operation, reduce well workover and account for for a long time well to producing the impact of crude oil, save production cost.
Accompanying drawing explanation
Fig. 1 is traveling valve tandem long-plunger rod-type pumping unit superstructure schematic diagram.
Fig. 2 is traveling valve tandem long-plunger rod-type pumping unit substructure schematic diagram.
Embodiment
Embodiment:
With reference to Fig. 1 and 2, embodiment of the present utility model is further illustrated:
This oil well pump is comprised of bearing device and the pump housing;
Bearing device: comprise upper connection 4, seal holder ring 7 and lower contact 8.The upper connection 4 inwall upper ends oil pipe that is threaded, lower end outside thread connects lower contact 8, and compresses and be positioned at the seal holder ring 7 on lower contact 8 inwall step surfaces.
The pump housing: comprise valve bonnet 1, long-plunger 2, guide sleeve 3, mechanical mandrel 5, sealing seat ring 6, cutting ferrule 9, leather cup mandrel 10, leather cup 11, leather cup seat ring 12, leather cup pressure cap 13, leather cup joint 14, short pump barrel 15, lower pump barrel 16, crossover sub 17, closed cage 18, the valve ball 19 that moves about, the valve seat 20 that moves about, valve base joint 21 and oiling valve 22.The long-plunger 2 tops valve bonnet 1 that is threaded, bottom connects two-stage closed cage 18 and valve base joint 21 in succession by crossover sub 17 internal threads, is equipped with move about valve ball 19 and the valve seat 20 that moves about in two-stage closed cage 18.The lower inner wall of the guide sleeve 3 on suit long-plunger 2 is threaded and is set with the mechanical mandrel 5 on long-plunger 2, and compression is positioned at the sealing seat ring 6 on mechanical mandrel 5 outer wall steps.The leather cup mandrel 10 that is socketed cutting ferrule 9 and is threaded on suit long-plunger 2 on machinery mandrel 5 outer walls.On leather cup mandrel 10 bottom outer walls, be set with successively leather cup 11, leather cup seat ring 12 and leather cup pressure cap 13, and bottom connects short pump barrel 15 by leather cup joint 14 internal threads, short pump barrel 15 bottom outside threads connect lower pump barrel 16, and lower pump barrel 16 bottom internal threads connect oiling valve 22.
The length of long-plunger 2 is greater than the length of short pump barrel 15; Traveling valve outside dimension is greater than short pump barrel 15 internal diameter sizes; Short pump barrel 15 is working barrel, and lower pump barrel 16 is inoperative cylinder; Closed cage 18 oil outlets are that plum is petal; Sealing seat ring 6 and seal holder ring 7 are mechanical supporting structure, and leather cup 11 is soft underprop structure.
The down-hole operation of this oil well pump is as follows:
First bearing device is lowered into design pump with oil pipe dark, then by the pump housing with under sucker rod is from oil pipe to the position of bearing device.On carry sucker rod, drive piston pier to hit pump barrel 2 to 3 times, make to seal seat ring 6 and the complete combination of seal holder ring 7; Cutting ferrule 9 is completely by the rear spreading of seal holder ring 7, and end face withstands seal holder ring 7 lower end surfaces; Leather cup 11 arrives the locking position of lower contact 8, thereby realizes the connection of the pump housing and oil pipe.
Claims (2)
1. a traveling valve tandem long-plunger rod-type pumping unit, is characterized in that:
This oil well pump is comprised of bearing device and the pump housing;
Bearing device: upper connection (4) upper end internal thread connected pipes, lower end outside thread connects lower contact (8), and compression is positioned at the seal holder ring (7) on lower contact (8) inwall step surface;
The pump housing: long-plunger (2) the top valve bonnet (1) that is threaded, bottom connects two-stage closed cage (18) and valve base joint (21) in succession by crossover sub (17) internal thread, is equipped with the valve ball that moves about (19) and the valve seat that moves about (20) in two-stage closed cage (18); Guide sleeve (3) lower internal thread on suit long-plunger (2) connects the mechanical mandrel (5) on suit long-plunger (2), and compression is positioned at the sealing seat ring (6) on mechanical mandrel (5) outer wall step; On the outer wall of machinery mandrel (5) bottom, be set with the leather cup mandrel (10) on cutting ferrule (9) outside thread connection suit long-plunger (2); On the outer wall of leather cup mandrel (10) bottom, be set with successively leather cup (11), leather cup seat ring (12) and leather cup pressure cap (13), and bottom connects short pump barrel (15) by leather cup joint (14) internal thread, short pump barrel (15) bottom outside thread connects lower pump barrel (16), and lower pump barrel (16) bottom internal thread connects oiling valve (22).
2. traveling valve tandem long-plunger rod-type pumping unit according to claim 1, is characterized in that the length of long-plunger (2) is greater than the length of short pump barrel (15); Traveling valve outside dimension is greater than short pump barrel (15) internal diameter size; Short pump barrel (15) is working barrel, and lower pump barrel (16) is inoperative cylinder; Closed cage (18) oil outlet is that plum is petal; Sealing seat ring (6) and seal holder ring (7) are mechanical supporting structure, and leather cup (11) is soft underprop structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414239.4U CN203394717U (en) | 2013-07-12 | 2013-07-12 | Tandem long plunger rod type oil-well pump of travelling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414239.4U CN203394717U (en) | 2013-07-12 | 2013-07-12 | Tandem long plunger rod type oil-well pump of travelling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394717U true CN203394717U (en) | 2014-01-15 |
Family
ID=49906253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320414239.4U Expired - Fee Related CN203394717U (en) | 2013-07-12 | 2013-07-12 | Tandem long plunger rod type oil-well pump of travelling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394717U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840472A (en) * | 2015-01-13 | 2016-08-10 | 中国石油天然气股份有限公司 | Rod-type oil-well pump capable of interchanging works |
| CN112012912A (en) * | 2019-05-29 | 2020-12-01 | 中国石油天然气股份有限公司 | Long-stroke oil well pump |
-
2013
- 2013-07-12 CN CN201320414239.4U patent/CN203394717U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840472A (en) * | 2015-01-13 | 2016-08-10 | 中国石油天然气股份有限公司 | Rod-type oil-well pump capable of interchanging works |
| CN112012912A (en) * | 2019-05-29 | 2020-12-01 | 中国石油天然气股份有限公司 | Long-stroke oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20210712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |