CN201802331U - Screw pump well washing device - Google Patents
Screw pump well washing device Download PDFInfo
- Publication number
- CN201802331U CN201802331U CN2010205374592U CN201020537459U CN201802331U CN 201802331 U CN201802331 U CN 201802331U CN 2010205374592 U CN2010205374592 U CN 2010205374592U CN 201020537459 U CN201020537459 U CN 201020537459U CN 201802331 U CN201802331 U CN 201802331U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- well washing
- screw pump
- central
- central tube
- 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 - Fee Related
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Abstract
A screw pump well washing device applicable to oil fields comprises an upper joint, a central pipe, a sealing ring sliding sleeve, a leather cup, a cup seat, an adjusting ring, a return spring, a spring seat and a lower joint. The entire well washing device is designed into a cylindrical shell structure, wherein external pipe threads are arranged on both ends of the central pipe which has 2-4 well washing holes on the top end thereof, the lower joint has the external pipe threads on the lower part, the internal pipe threads arranged on the upper part of the lower joint are connected with the external pipe thread of the central pipe, the spring seat, the return spring and the sliding sleeve are sleeved on the central pipe on the upper part of the lower joint, two sealing rings are arranged on and under the well washing hole of the central pipe above the internal hole of the sliding sleeve, the adjusting ring is arranged on the bottom of the sliding sleeve, two-level leather cups are arranged on the central lower part of the sliding sleeve, the leather cups are situated on the cup seat with the sealing ring arranged therebetween, and the external pipe threads on the upper end of the central pipe are connected with the upper joint which has internal pipe threads arranged on the upper and lower ends. The screw pump well washing device is simple in structure, easy for manufacturing and is safe and reliable. Moreover, the screw pump well washing device is easy to operate, can increase crude oil output and promises rich economic returns.
Description
One, technical field:
The utility model relates to oil field screw pump well-flushing special tool, particularly is a kind of screw pump well washing apparatus.
Two, background technology:
Ground driving screw pump is an oil production technology technology at present commonly used, and screw pump forms the sealing chamber that is not connected mutually one by one by between rotor and stator, and when rotor rotation, the enclosed cavity volume constantly changes, and shaft bottom crude oil is lifted to well head.Because screw pump is a displacement pump, can't carry out the well-flushing operation, when screw pump stops production, because factor affecting such as the shaft bottom crude oil degassing, coolings, viscosity of crude increases, when screw pump starts once more, operating load is big, the unlatching screw pump is adopted at current scene more, the mode of production limit, limit well-flushing, but because the screw pump discharge capacity is little, well washing effect is poor, screw rod needs progressively to return to the ordinary production parameter by low speed simultaneously, and oil well output is long recovery time, influences crude oil production.Though the sleeve rotor technology for washing well is arranged at present, because the cost height seldom uses.Thereby prior art can not solve the problems of the technologies described above.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of screw pump well washing apparatus is provided.
Technical solutions of the utility model comprise: top connection, central tube, sealing ring, sliding sleeve, leather cup, bowl seat, adjustable ring, return spring, spring base, lower contact; It is the cylindrical tube body structure, the central tube two ends are provided with external pipe thread, it is external pipe threads that the top of central tube is provided with 2～4 well washing hole lower contact bottoms, the top Internal Pipe Thread is connected with the central tube external pipe thread, suit spring base, return spring, sliding sleeve in proper order on lower contact central upper portion pipe, the endoporus top of sliding sleeve is at the upper and lower two seals circle that respectively is provided with of the well washing hole of central tube, adjustable ring is equipped with in bottom at sliding sleeve, be provided with the two-stage leather cup in the middle and lower part of sliding sleeve, leather cup is sitting on the bowl seat, is provided with sealing ring between leather cup and the bowl seat; The upper end external pipe thread of central tube is provided with the Internal Pipe Thread top connection and is connected with upper and lower.
The beneficial effects of the utility model are: simple in structure, safe and reliable, to make easily, and the screw pump well-flushing is easy to operate, increases crude output, remarkable in economical benefits.
Four, description of drawings:
Fig. 1-the utility model master looks and partly cuts open structural representation.
In the accompanying drawing:
1. top connection, 2. central tube, 3,5. sealing ring, 4. well washing hole, 6. sliding sleeve, 7. leather cup, 8. bowl seat, 9. adjustable ring, 10. return spring, 11. spring bases, 12. lower contacts.
Five, the specific embodiment:
In conjunction with the accompanying drawings, the utility model will be further described:
The screw pump well washing apparatus is the cylindrical tube body structure, central tube 2 two ends are provided with external pipe thread, it is external pipe threads that the top of central tube 2 is provided with 2～4 well washing holes, 4 lower contacts, 12 bottoms, the top Internal Pipe Thread is connected with central tube 2 external pipe threads, suit spring base 11 in proper order on lower contact 12 central upper portion pipes 2, return spring 10, sliding sleeve 6, the endoporus top of sliding sleeve 6 is on the well washing hole 4 of central tube 2, respectively be provided with two seals circle 3 down, in the bottom of sliding sleeve 6 adjustable ring 9 is housed, be provided with two-stage leather cup 7 in the middle and lower part of sliding sleeve 6, leather cup 7 is sitting on the bowl seat 8, is provided with sealing ring 5 between leather cup 7 and the bowl seat 8; The upper end external pipe thread of central tube 2 is provided with Internal Pipe Thread top connection 1 and is connected with upper and lower.
Install and operation:
At first, when the oil well operation top connection 1 of screw pump well washing apparatus is connected with tubing string, lower contact 12 is connected with screw pump, goes into the well with screw pump; Secondly, during production, sliding sleeve 6 sealing well washing holes 4 are isolated oil sets annular space, the screw pump ordinary production; The 3rd, during well-flushing, add 2～4 MPa pressure at oil sets annular space, act on leather cup 7, drive sliding sleeve 6 and move down, expose well washing hole 4, oil sets annular space is split into the loop, carries out well-flushing; The 4th, after well-flushing is finished, eliminate casing pressure, sliding sleeve 6 is return under spring 10 effects, sealing oil jacket space, screw pump ordinary production.
Claims (1)
1. a screw pump well washing apparatus that is used for the oil field comprises: top connection (1), central tube (2), sealing ring (3,5), sliding sleeve (6), leather cup (7), bowl seat (8), adjustable ring (9), return spring (10), spring base (11), lower contact (12); It is characterized in that: described screw pump well washing apparatus is the cylindrical tube body structure, central tube (2) two ends are provided with external pipe thread, it is external pipe thread that the top of central tube (2) is provided with 2～4 well washing holes (4) lower contacts (12) bottom, the top Internal Pipe Thread is connected with central tube (2) external pipe thread, go up the following suit at lower contact (12) central upper portion pipe (2) and spring base (11), return spring (10), sliding sleeve (6), the endoporus top of sliding sleeve (6) is on the well washing hole (4) of central tube (2), respectively be provided with two seals circle (3) down, in the bottom of sliding sleeve (6) adjustable ring (9) is housed, be provided with two-stage leather cup (7) in the middle and lower part of sliding sleeve (6), leather cup (7) is sitting on the bowl seat (8), is provided with sealing ring (5) between leather cup (7) and the bowl seat (8); The upper end external pipe thread of central tube (2) is provided with Internal Pipe Thread top connection (1) and is connected with upper and lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205374592U CN201802331U (en) | 2010-09-14 | 2010-09-14 | Screw pump well washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205374592U CN201802331U (en) | 2010-09-14 | 2010-09-14 | Screw pump well washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802331U true CN201802331U (en) | 2011-04-20 |
Family
ID=43871836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205374592U Expired - Fee Related CN201802331U (en) | 2010-09-14 | 2010-09-14 | Screw pump well washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802331U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561962A (en) * | 2011-12-28 | 2012-07-11 | 中国石油天然气股份有限公司 | Coal bed gas flow guiding well washing device |
| CN103362483A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Horizontal well gravel-packed string and pressure control valves thereof |
-
2010
- 2010-09-14 CN CN2010205374592U patent/CN201802331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561962A (en) * | 2011-12-28 | 2012-07-11 | 中国石油天然气股份有限公司 | Coal bed gas flow guiding well washing device |
| CN102561962B (en) * | 2011-12-28 | 2014-11-19 | 中国石油天然气股份有限公司 | Coal bed gas flow guiding well washing device |
| CN103362483A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Horizontal well gravel-packed string and pressure control valves thereof |
| CN103362483B (en) * | 2012-03-31 | 2016-06-15 | 大港油田集团有限责任公司 | SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL tubing string and pressure-control valve thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20110914 |