CN204532255U - Ground hydraulic open-type down-hole drainage device - Google Patents
Ground hydraulic open-type down-hole drainage device Download PDFInfo
- Publication number
- CN204532255U CN204532255U CN201520181649.8U CN201520181649U CN204532255U CN 204532255 U CN204532255 U CN 204532255U CN 201520181649 U CN201520181649 U CN 201520181649U CN 204532255 U CN204532255 U CN 204532255U
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- piston
- trunk
- path section
- drain mast
- solvable ball
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Abstract
The utility model discloses a kind of ground hydraulic open-type down-hole drainage device, comprise drain mast, drain mast is threaded connection on oil pipe, the internal diameter at the corresponding draining position of oil pipe is change, successively decrease successively from top to bottom, comprise the large footpath section, top reducer, central diameter section, bottom reducer and the path section that connect successively; Drain mast is connected in path section, trunk-piston is provided with above drain mast, trunk-piston is arranged in path section, trunk-piston is connected with path section by shear pin, the inwall of path section and the outer wall of trunk-piston are formed and are tightly connected, and are provided with little solvable ball and large solvable ball above trunk-piston, and the diameter of little solvable ball is less than the internal diameter of path section, little solvable ball sealing gets lodged in the upper end of trunk-piston, and large solvable ball sealing gets lodged on the reducer of bottom.The utility model successfully can open drain mast, easy to operate, and efficiency is high, and does not limit by hole deviation.
Description
Technical field
The utility model relates to a kind of field produces downhole tool, particularly a kind of ground hydraulic open-type down-hole drainage device.
Background technology
At present, the on-the-spot normally used drainage device of field produces comprises an one way valve and is positioned at a drain mast below it, and drain mast is threaded connection on oil pipe.When drain mast opened by needs, need to enter instrument first down and trip out one way valve, more manually in oil pipe, throw an iron staff from well head or break drain mast with entering an iron staff steel wire.If the hole deviation of drain mast position is comparatively large, as being greater than 65 degree, aforesaid operations just can not ensure success rate.Along with high angle hole, horizontal well get more and more, above-mentioned drainage device can not meet the demand of field produces.
Summary of the invention
The utility model provides a kind of ground hydraulic open-type down-hole drainage device for solving in known technology the technical problem that exists, and this device can guarantee the success rate of opening drain mast, and easy to operate, and efficiency is high.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is: a kind of ground hydraulic open-type down-hole drainage device, comprise drain mast, described drain mast is threaded connection on oil pipe, the internal diameter at the corresponding draining position of described oil pipe is change, successively decrease successively from top to bottom, comprise the large footpath section, top reducer, central diameter section, bottom reducer and the path section that connect successively; Described drain mast is connected in described path section, trunk-piston is provided with above described drain mast, described trunk-piston is arranged in described path section, described trunk-piston is connected with described path section by shear pin, the inwall of described path section and the outer wall of described trunk-piston are formed and are tightly connected, little solvable ball and large solvable ball is provided with above described trunk-piston, the diameter of described little solvable ball is less than the internal diameter of described path section, described little solvable ball sealing gets lodged in the upper end of described trunk-piston, and described large solvable ball sealing gets lodged on the reducer of described bottom.
Be provided with interior chamfering in the upper end of described trunk-piston, described little solvable ball is blocked in the bottom of interior fillet surface.
The bottom of described trunk-piston is provided with closing-in structure.
The inwall of described path section and the outer wall of described trunk-piston are formed by O shape rubber ring and are tightly connected.
The end face of described drain mast and described oil pipe adopt lead pad to seal.
The advantage that the utility model has and good effect are: adopt and throw in large solvable ball and make it set to realize flow string top on the bottom reducer of oil pipe to build the pressure, and set the operations such as whether cable-passing packer or inspection top oil pipe seal to complete; Adopt solvable ball under throwing in make its shutoff on trunk-piston, and the little solvable ball of the method adopting ground to suppress promotion is descending together with trunk-piston, cuts off drain mast, sets up in oil pipe and passage that is oily, that overlap annular space, realize down-hole pressure release; Successfully can open drain mast, easy to operate, efficiency is high, and does not limit by hole deviation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, large solvable ball, 2, little solvable ball, 3, shear pin, 4, O shape rubber ring, 5, trunk-piston, 6, drain mast, 7, oil pipe, 7-1, top reducer, 7-2, central diameter section, 7-3, bottom reducer, 7-4, path section.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of ground hydraulic open-type down-hole drainage device, comprise drain mast 6, described drain mast 6 is threaded connection on oil pipe 7, the internal diameter at the corresponding draining position of described oil pipe 7 is change, successively decrease successively from top to bottom, comprise connect successively large footpath section (not shown), top reducer 7-1, central diameter section 7-2, bottom reducer 7-3 and path section 7-4, described drain mast 6 is connected on described path section 7-4, trunk-piston 5 is provided with above described drain mast 6, described trunk-piston 5 is arranged in described path section 7-4, described trunk-piston 5 is connected with described path section 7-4 by shear pin 3, the inwall of described path section 7-4 and the outer wall of described trunk-piston 5 are formed and are tightly connected, little solvable ball 2 and large solvable ball 1 is provided with above described trunk-piston 5, the diameter of described little solvable ball 2 is less than the internal diameter of described path section 7-4, the shutoff of described little solvable ball 2 is in the upper end of described trunk-piston 5, the shutoff of described large solvable ball 1 is on described bottom reducer 7-3.
In the present embodiment, be provided with interior chamfering in the upper end of described trunk-piston 5, described little solvable ball 2 is blocked in the bottom of interior fillet surface, the upper end, straight tube face of described trunk-piston 5.The bottom of described trunk-piston 5 is provided with closing-in structure.The inwall of described path section 7-4 and the outer wall of described trunk-piston 5 are formed by O shape rubber ring 4 and are tightly connected.The end face of described drain mast 6 and described oil pipe 6 adopt lead pad to seal.
Operating principle of the present utility model:
In order to realize setting cable-passing packer or check top oil pipe whether to seal, need to realize flow string top when building the pressure, large solvable ball 1 is dropped into oil pipe 7, make its shutoff on the reducer 7-3 of bottom, the fluid passage that isolation flow string inner chamber is downward, realize flow string top to build the pressure, to realize setting cable-passing packer or checking top oil pipe whether to seal.When needs well workover, first little solvable ball 2 is dropped into oil pipe 7, make its shutoff in the upper end of described trunk-piston 5, realize the isolation up and down of trunk-piston 5.Then from ground to infusion liquid in tubing string, the little solvable ball 2 of hydraulic drive is descending together with trunk-piston 5, cuts off shear pin 3, cuts off drain mast 6, sets up in oil pipe and passage that is oily, cover annular space, realizes down-hole pressure release.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.
Claims (5)
1. a ground hydraulic open-type down-hole drainage device, comprise drain mast, described drain mast is threaded connection on oil pipe, it is characterized in that, the internal diameter at the corresponding draining position of described oil pipe is change, successively decrease successively from top to bottom, comprise the large footpath section, top reducer, central diameter section, bottom reducer and the path section that connect successively; Described drain mast is connected in described path section, trunk-piston is provided with above described drain mast, described trunk-piston is arranged in described path section, described trunk-piston is connected with described path section by shear pin, the inwall of described path section and the outer wall of described trunk-piston are formed and are tightly connected, little solvable ball and large solvable ball is provided with above described trunk-piston, the diameter of described little solvable ball is less than the internal diameter of described path section, described little solvable ball sealing gets lodged in the upper end of described trunk-piston, and described large solvable ball sealing gets lodged on the reducer of described bottom.
2. ground hydraulic open-type down-hole according to claim 1 drainage device, is characterized in that, be provided with interior chamfering in the upper end of described trunk-piston, and described little solvable ball is blocked in the bottom of interior fillet surface.
3. ground hydraulic open-type down-hole according to claim 1 drainage device, it is characterized in that, the bottom of described trunk-piston is provided with closing-in structure.
4. ground hydraulic open-type down-hole according to claim 1 drainage device, is characterized in that, the inwall of described path section and the outer wall of described trunk-piston are formed by O shape rubber ring and be tightly connected.
5. ground hydraulic open-type down-hole according to claim 1 drainage device, it is characterized in that, the end face of described drain mast and described oil pipe adopt lead pad to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181649.8U CN204532255U (en) | 2015-03-27 | 2015-03-27 | Ground hydraulic open-type down-hole drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181649.8U CN204532255U (en) | 2015-03-27 | 2015-03-27 | Ground hydraulic open-type down-hole drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532255U true CN204532255U (en) | 2015-08-05 |
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ID=53746278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520181649.8U Expired - Fee Related CN204532255U (en) | 2015-03-27 | 2015-03-27 | Ground hydraulic open-type down-hole drainage device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204532255U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999595A (en) * | 2018-07-23 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of oil well pump is just suppressing draining technique |
| CN109931031A (en) * | 2017-12-17 | 2019-06-25 | 江苏康群科技发展有限公司 | Fluid pressure type bleeder |
| CN110173234A (en) * | 2019-03-27 | 2019-08-27 | 大庆吉庆雨科技开发有限公司 | It is a kind of to expand the automatic drainage device of formula certainly |
| CN110735610A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | soluble pressing plug |
-
2015
- 2015-03-27 CN CN201520181649.8U patent/CN204532255U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931031A (en) * | 2017-12-17 | 2019-06-25 | 江苏康群科技发展有限公司 | Fluid pressure type bleeder |
| CN108999595A (en) * | 2018-07-23 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of oil well pump is just suppressing draining technique |
| CN110173234A (en) * | 2019-03-27 | 2019-08-27 | 大庆吉庆雨科技开发有限公司 | It is a kind of to expand the automatic drainage device of formula certainly |
| CN110173234B (en) * | 2019-03-27 | 2024-04-19 | 大庆吉庆雨科技开发有限公司 | Self-expanding automatic oil drainage device |
| CN110735610A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | soluble pressing plug |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20200327 |