CN201531248U - Differential-pressure type oil drain device - Google Patents
Differential-pressure type oil drain device Download PDFInfo
- Publication number
- CN201531248U CN201531248U CN2009202402564U CN200920240256U CN201531248U CN 201531248 U CN201531248 U CN 201531248U CN 2009202402564 U CN2009202402564 U CN 2009202402564U CN 200920240256 U CN200920240256 U CN 200920240256U CN 201531248 U CN201531248 U CN 201531248U
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- Prior art keywords
- differential
- oil drain
- hollow pin
- drain device
- pressure type
- 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
The utility model relates to equipment used on oilfields, in particular to a differential-pressure type oil drain device utilizing the hydraulic area differential principle. The utility model adopts the technical scheme that an upper connector, a piston, a hollow pin and a lower connector are included, wherein the piston with different areas on two ends is arranged in the oil drain device main body at the lower end of the upper connector; the hollow pin is arranged at the inner end of the lower connector, and a central hole is formed in the hollow pin. The differential-pressure type oil drain device has the benefits that in case of a vertical well or a well with a smaller slope, a sucker rod can be used as a striking rod to strike the pin, and the differential pressure type oil drain device can not be limited by well conditions.
Description
One, technical field:
The utility model relates to a kind of oil field equipment, particularly a kind of differential bleeder that utilizes the moving principle of hydraulic surface product moment.
Two, background technology:
Present bleeder has a variety of, carries beam hanger bleeder, impacting type bleeder, outer scissors bleeder etc., and wherein the impacting type bleeder is the most frequently used, utilizes the rod whip pin, realizes draining.But can only be used for the smaller well of peupendicular hole and gradient, when running into the bigger well of horizontal well and gradient, just can not finish the work, limited by hole condition.Other bleeders still can not be used for horizontal well and inclined shaft, make troubles to well-repairing work.
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 differential bleeder that is not subjected to the hole condition restriction is provided.
Its technical scheme is: comprise top connection, piston, hollow pin and lower contact, be provided with area different piston in two ends in the bleeder main body of top connection lower end, be provided with hollow pin in the inner of lower contact, be provided with centre bore in the described hollow pin.
Above-mentioned top connection internal thread escape place is provided with equally distributed aperture.
Utilize the moving principle design of hydraulic surface product moment, utilize hydraulic pump to apply certain pressure in well, the area difference at piston two ends forms differential, and piston can move down, and cuts off pin.Pin is a hollow pin, and the centre bore of pin just becomes drain tap behind the cut-out pin, thereby realizes draining.
The beneficial effects of the utility model are: when well is the less well of peupendicular hole and gradient, can uses sucker rod to do trip rod yet and sever pin, differential bleeder is not limited by hole condition.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Among the last figure: top connection 1, piston 2, safetied pin 3, hollow pin 4, pad 5, lower contact 6.
Five, the specific embodiment:
In conjunction with the accompanying drawings 1, the utility model will be further described:
Its technical scheme is: comprise top connection 1, piston 2, hollow pin 4 and lower contact 6, be provided with the different piston of two ends area 2 in the bleeder main body of top connection 1 lower end, can realize differential.Be provided with hollow pin 4 in the inner of lower contact 6, be provided with centre bore in the described hollow pin 4.
Above-mentioned top connection internal thread escape place is provided with equally distributed aperture, and prevention is because overlong time causes the long-pending oil of annular space, causes that the piston resistance is excessive can not to move.
In the operation process, top connection 1 and lower contact 6 directly connect and oil pipe.When well workover, utilize hydraulic pump in well, to exert pressure, liquid enters in the bleeder annular chamber, because the moving principle of hydraulic surface product moment, piston 2 begins to move downward, and moves to hollow pin 4 places.When pressure acquired a certain degree, the power that piston 2 applies to hollow pin 4 was greater than the shearing resistance of hollow pin 4, thereby cut off hollow pin 4, and the centre bore of hollow pin 4 has become drain tap.When oil well was the smaller well of peupendicular hole and gradient, also doing trip rod with sucker rod severed hollow pin 4.
Claims (2)
1. differential bleeder, it is characterized in that: comprise top connection (1), piston (2), hollow pin (4) and lower contact (6), be provided with the different piston of two ends area (2) in the bleeder main body of top connection (1) lower end, be provided with hollow pin (4) in the inner of lower contact (6), described hollow pin is provided with centre bore in (4).
2. differential bleeder according to claim 1 is characterized in that: described top connection internal thread escape place is provided with equally distributed aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202402564U CN201531248U (en) | 2009-10-23 | 2009-10-23 | Differential-pressure type oil drain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202402564U CN201531248U (en) | 2009-10-23 | 2009-10-23 | Differential-pressure type oil drain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531248U true CN201531248U (en) | 2010-07-21 |
Family
ID=42526652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202402564U Expired - Fee Related CN201531248U (en) | 2009-10-23 | 2009-10-23 | Differential-pressure type oil drain device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531248U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191156A (en) * | 2017-06-26 | 2017-09-22 | 中国石油天然气股份有限公司 | A kind of level pressure bleeder |
| CN109931031A (en) * | 2017-12-17 | 2019-06-25 | 江苏康群科技发展有限公司 | Fluid pressure type bleeder |
| CN110552669A (en) * | 2018-05-31 | 2019-12-10 | 中国石油天然气股份有限公司 | Differential pressure injection tool |
| CN111379539A (en) * | 2018-12-28 | 2020-07-07 | 中国石油天然气股份有限公司 | Starting vibration steam distribution valve |
-
2009
- 2009-10-23 CN CN2009202402564U patent/CN201531248U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191156A (en) * | 2017-06-26 | 2017-09-22 | 中国石油天然气股份有限公司 | A kind of level pressure bleeder |
| CN107191156B (en) * | 2017-06-26 | 2019-04-12 | 中国石油天然气股份有限公司 | A kind of level pressure bleeder |
| CN109931031A (en) * | 2017-12-17 | 2019-06-25 | 江苏康群科技发展有限公司 | Fluid pressure type bleeder |
| CN110552669A (en) * | 2018-05-31 | 2019-12-10 | 中国石油天然气股份有限公司 | Differential pressure injection tool |
| CN111379539A (en) * | 2018-12-28 | 2020-07-07 | 中国石油天然气股份有限公司 | Starting vibration steam distribution valve |
| CN111379539B (en) * | 2018-12-28 | 2022-05-10 | 中国石油天然气股份有限公司 | Starting vibration steam distribution valve |
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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: 20100721 Termination date: 20131023 |