CN200978651Y - Pressure relief coupler - Google Patents
Pressure relief coupler Download PDFInfo
- Publication number
- CN200978651Y CN200978651Y CN 200620158757 CN200620158757U CN200978651Y CN 200978651 Y CN200978651 Y CN 200978651Y CN 200620158757 CN200620158757 CN 200620158757 CN 200620158757 U CN200620158757 U CN 200620158757U CN 200978651 Y CN200978651 Y CN 200978651Y
- Authority
- CN
- China
- Prior art keywords
- spool
- valve core
- hole
- mud
- steel ball
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a decompression connector which is a salvaging tool applied for processing down-well accident in oil-field well-log construction, comprising a body, a valve core, a sealing ring, a jump ring and a steel ball, wherein the body is provided with an upper screw button and a lower screw button. The utility model is characterized in that the middle of the body is arranged with a radial mud circulating hole, a cylindrical valve core is provided in the body, the valve core and the body are engaged by sliding, a sealing ring is provided between the valve core and the body, a locking apparatus is provided between the valve core and the body, the middle of the valve core is arranged with a radial hole. The valve core is provided with a center hole, a step is arranged in the center hole. The diameter of the steel ball is smaller than the upper end big hole of the valve core center hole and bigger than the lower end small hole of the valve core center hole. While salvaging, enough mud circulating space is provided, the mud flows outward, and decompression is realized. Down-well mud circulation is unblocked, salvaging efficiency and safety is improved, and trip-out speed is increased. The mud ejection and leakage problem is solved.
Description
Technical field
The utility model relates to a kind of oil and salvages special tool, particularly handles the fishing tool of down-hole accident in the oil reservoir logging construction.
Background technology
At present, in the oil reservoir logging manufacturing process, often have various trouble of lost tool in holes and fall in the well, as drilling tool, logger, sucker rod or cable etc.Downhole tool taking place fall after the well accident, need be lowered to fishing tool it is salvaged out.Salvaging successfully, after promptly trouble of lost tool in hole entered fisher, junk and the fisher salvaged occupied the very big cyclic space together.The gap that is used for circulating mud is very little.Mud can spray in the drilling well trip-out process, causes trip-out speed to reduce; Mud loss; Also may bring out gas blowout accident.
The utility model content
The purpose of this utility model is: a kind of pressure release joint is provided, makes in the salvaging process, after trouble of lost tool in hole enters fisher, enough mud circulation spaces are still arranged, make the down-hole slurry circulation unimpeded, improve the safety of salvaging efficient, and improve trip-out speed, solve the mud ejection, the mud loss problem.
The technical solution adopted in the utility model is: the pressure release joint is made up of body, spool, sealing ring, jump ring, steel ball.There is radially circulating opening at the body middle part.Cylinder shape valve is arranged in body, be slidingly matched between valve body and the body, between valve body and the body sealing ring is arranged.Between valve body and the body locking device is arranged.There is radial hole at middle part at spool.Valve body has centre bore, and step is arranged in the centre bore.The diameter of steel ball is less than center spool hole upper end macropore, and greater than the aperture of lower end, center spool hole.Steel ball is the pitching usefulness that builds the pressure.
Described locking device is a jump ring, also can adopt shear pin.
For the radially circulating opening that guarantees body can be communicated with the middle part radial hole of spool, on the position of spool outer wall radial hole, annular groove is arranged.
For guaranteeing steel ball sealing, the step in the spool radial center hole is a taper seat shape.
Sketch use of the present utility model, help understanding the utility model and beneficial effect thereof.Before salvaging, the pressure release joint is connected between fisher and the drilling tool.When trouble of lost tool in hole enters fisher, junk and the fisher salvaged have occupied the cyclic space together.The circulating mud difficulty.Drop into steel ball in drilling rod, steel ball sets on spool.Mud pressure shrinks jump ring, and spool glides, and the radially circulating opening of body is communicated with the spool radial hole.Enough mud circulation spaces are arranged, make the mud outflow, reach the purpose of pressure release; Make the down-hole slurry circulation unimpeded, improve the safety of salvaging efficient, and improve trip-out speed, solve the mud ejection, the mud loss problem.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Accompanying drawing is the utility model pressure release joint design generalized section.
Among the figure, 1. body, 2. spool, 3. jump ring, 4. sealing ring, 5. steel ball.
The specific embodiment
Embodiment 1: consult accompanying drawing.500 millimeters of pressure release joint length, external diameter are 137.5 millimeters.Body 1 has last screw buckle and following screw buckle, and last screw buckle and following screw buckle are the drilling rod button.There are 4 radially circulating openings at body 1 middle part, and the diameter in hole is 15 millimeters.Cylindrical spool 2 is arranged in body 1, be slidingly matched between spool 2 and the body 1.1 sealing ring 4 is arranged between spool 2 and the body 1.1 locking device 3 is arranged between spool 2 and the body 1, and what locking device 3 adopted is jump ring.At the middle part of spool 24 radial holes are arranged, on the position of spool 2 outer wall radial holes, annular groove is arranged, 25 millimeters of groove moneys, 10 millimeters of the degree of depth.Spool 3 has centre bore, and step is arranged in the centre bore, 40 millimeters of the big centre bores in top, and the little centre bore in bottom is 30 millimeters.Step in spool 2 centre bores is a taper seat shape.37 millimeters of the diameters of steel ball 5.
Embodiment 2: consult accompanying drawing.Embodiment 2 is substantially the same manner as Example 1, and difference is: what locking device 3 adopted is shear pin.
Claims (5)
1, a kind of pressure release joint is by body (1), spool (2), sealing ring (3), jump ring (4), steel ball (5) is formed, body (1) has last screw buckle and following screw buckle, it is characterized in that: there is radially circulating opening at body (1) middle part, cylindrical spool (2) is arranged in body (1), be slidingly matched between spool (2) and the body (1), between spool (2) and the body (1) sealing ring (4) is arranged, between spool (2) and the body (1) locking device (3) is arranged, there is radial hole at middle part at spool (2), spool (3) has centre bore, step is arranged in the centre bore, the diameter of steel ball (5) is less than spool (2) centre bore upper end macropore, and greater than the aperture of spool (2) centre bore lower end.
2, pressure release joint according to claim 1 is characterized in that: what described locking device (3) adopted is jump ring.
3, pressure release joint according to claim 1 is characterized in that: what described locking device (3) adopted is shear pin.
4, according to claim 1 or 2 or 3 described pressure release joints, it is characterized in that: on the position of spool (2) outer wall radial hole, annular groove is arranged.
5, according to claim 1 or 2 or 3 described pressure release joints, it is characterized in that: the step in spool (2) centre bore is a taper seat shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158757 CN200978651Y (en) | 2006-12-06 | 2006-12-06 | Pressure relief coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158757 CN200978651Y (en) | 2006-12-06 | 2006-12-06 | Pressure relief coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978651Y true CN200978651Y (en) | 2007-11-21 |
Family
ID=38979028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620158757 Expired - Fee Related CN200978651Y (en) | 2006-12-06 | 2006-12-06 | Pressure relief coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978651Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182418A (en) * | 2011-04-01 | 2011-09-14 | 中国海洋石油总公司 | Joint device for underwater dry-type Christmas tree sealed cabin |
| CN107448169A (en) * | 2017-08-28 | 2017-12-08 | 中国地质科学院地质力学研究所 | A kind of three-body type Hydraulic Fracturing Stress Measurements Push-and-pull valve |
| CN112065326A (en) * | 2018-09-20 | 2020-12-11 | 山东天汇石油技术有限公司 | Downhole operation tool and method for petroleum industry |
| CN115341869A (en) * | 2021-05-14 | 2022-11-15 | 中国石油天然气股份有限公司 | Fishing tool for bottom plug of oil-gas well |
-
2006
- 2006-12-06 CN CN 200620158757 patent/CN200978651Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182418A (en) * | 2011-04-01 | 2011-09-14 | 中国海洋石油总公司 | Joint device for underwater dry-type Christmas tree sealed cabin |
| CN107448169A (en) * | 2017-08-28 | 2017-12-08 | 中国地质科学院地质力学研究所 | A kind of three-body type Hydraulic Fracturing Stress Measurements Push-and-pull valve |
| CN112065326A (en) * | 2018-09-20 | 2020-12-11 | 山东天汇石油技术有限公司 | Downhole operation tool and method for petroleum industry |
| CN112065326B (en) * | 2018-09-20 | 2022-08-26 | 东营大明石油工程科技开发有限责任公司 | Downhole operation tool and method for petroleum industry |
| CN115341869A (en) * | 2021-05-14 | 2022-11-15 | 中国石油天然气股份有限公司 | Fishing tool for bottom plug of oil-gas well |
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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: 20071121 Termination date: 20101206 |