CN201280908Y - Borehole log wellhead double-sealing blowout preventer - Google Patents
Borehole log wellhead double-sealing blowout preventer Download PDFInfo
- Publication number
- CN201280908Y CN201280908Y CNU200820225413XU CN200820225413U CN201280908Y CN 201280908 Y CN201280908 Y CN 201280908Y CN U200820225413X U CNU200820225413X U CN U200820225413XU CN 200820225413 U CN200820225413 U CN 200820225413U CN 201280908 Y CN201280908 Y CN 201280908Y
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- seal body
- pressing cap
- instrument
- choke tube
- preventer
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Abstract
The utility model relates to a well head dual-sealing blowout preventer for well logging, which is composed of an upper pressure cap, a two-level sealing body, a taper sealing packing, an overflowing connector, a lower pressure cap, a one-level sealing body, a two-level sealing body, a choke tube and an instrument catcher; the blowout preventer is characterized in that: the well head dual-sealing blowout preventer for well logging is cylindrical, the upper pressure cap is connected with the two-level sealing body in a screw threaded way, and the taper sealing packing is pressed at the lower end of the upper pressure cap; the two-level sealing body is in threaded connection with the one-level sealing body; the lower pressure cap and the taper sealing packing are pressed between the central parts of two sealing bodies, and the overflowing connector outside the one-level sealing body is arranged between the upper part of the lower pressure cap and the one-level sealing body; the one-level sealing body is connected with the choke tube in a screw threaded way, and the choke tube is in threaded connection with the instrument catcher; the cable penetrates through a concentric hole of the upper pressure cap, the two-level sealing body, the lower pressure cap, the one-level sealing body, the choke tube and the instrument catcher for connecting the well logging instrument.
Description
One, technical field
The utility model relates to a kind ofly surveys well logging well head double containment preventer used when showing at oil well and well.
Two, background technology
Problem of environmental pollution more and more is subjected to people's attention, and administering environment is a human major issue.Field produces exploitation at present is also more and more higher to cleaner production, requirement on environmental protection, and implement high-pressure sealed well band and press when logging well, general pressure 10-14MPa, the bad overflow that can produce in various degree of well head sealing causes the site environment pollution.According to field data statistics, water well test has 85% well all can have pollution problem, and the highest with serious pollution environmental fines is 100,000 yuan.
Instrument can take place in the well logging process in addition once in a while at most cause the instrument well accident that falls, the downhole instrument price of using all compare expensively at present, and value is about 50-200 is ten thousand yuan.Cause bigger economic loss to country.
At present, the industry of logging well does not at home also have a kind of device that can solve the well head overflow fully, adopt the wellhead blowout preventer of hydraulic system more advanced, well head still has overflow and produces, and structure is comparatively complicated, The field and inconvenience thereof, price is also relatively more expensive, 5-20 does not wait for ten thousand yuan, tries out in large-scale well logging project, is not suitable for on-the-spot conventional logging and uses.
The fairly simple preventer of domestic utilization structure is not very on probation to the high pressure water well test, and the well head overflow is bigger, uncontrollable, and for adapting to the well logging The field, it is a kind of with the novel well logging wellhead blowout preventor of falling-proof apparatus to be badly in need of development.
Three, summary of the invention
The purpose of this utility model provides a kind of well logging well head double containment preventer, solve above-mentioned existing well logging wellhead blowout preventer exist big contaminated environment of overflow and logging instrument at most well head cause well accident problem.
The technical solution of the utility model realizes in the following manner:
The utility model is made up of upper pressing cap, secondary seal body, cone seal packing, flush connection, lower pressing cap, primary seal body, secondary seal body, choke tube and instrument catcher, the well head double containment preventer that it is characterized in that logging well is made as cylindrical, upper pressing cap links to each other with secondary seal body screw thread, and the upper pressing cap lower end is pressed with the cone seal packing; The secondary seal body links to each other with primary seal body screw thread; Be pressed with lower pressing cap and cone seal packing between the two seal central parts, between lower pressing cap top and primary seal body, be provided with the logical external flush connection of primary seal; Be threaded between primary seal body and the choke tube, be threaded between choke tube and the instrument catcher; Cable passes upper pressing cap, secondary seal body, and the set concentric holes of lower pressing cap, primary seal body, choke tube and instrument catcher links to each other with logging instrument.
Primary seal body upper end is provided with box thread, link to each other with the upper pressing cap screw thread, be provided with awl sealing shape packing chamber below box thread, the bottom is provided with box thread, the inside on top is provided with lower pressing cap chamber and cone seal packing chamber from the top down, and the bottom is provided with box thread and male thread.
The choke tube upper and lower end parts is provided with male thread, is provided with spiral choked flow groove in the centre bore week.
The center-hole diameter of instrument catcher middle part and bottom is greater than the central upper portion bore dia, the middle part outside thoughtful in individual or four rectangular channels of Zhou Kaisan, 120 ° or 90 ° of angles, be provided with in the groove with rotating shaft locate the spacing arresting hook of torsion spring under the seizure head.
The utility model compared with prior art has the following advantages:
1, it is little free from environmental pollution to be provided with twin-stage cone seal, good seal performance, overflow;
2, be provided with instrument and catch head, at most the well head cable is disconnected when taking off at instrument, can catch instrument at well head, can not fall into the shaft bottom, can not damage instrument.
Four, description of drawings
Accompanying drawing-a kind of structural representation of the present utility model
1-cable 2-upper pressing cap 3-taper packing 4-secondary seal body 5-flush connection 6-lower pressing cap 7-primary seal body 8-choke tube 9-instrument catcher among the figure
Five, the specific embodiment
Be progressive open the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
The utility model is made up of upper pressing cap 2, secondary seal body 4, cone seal packing 3, flush connection 5, lower pressing cap 6, primary seal body 7, choke tube 8 and instrument catcher 9, the well head double containment preventer that it is characterized in that logging well is made as cylindrical, upper pressing cap 2 links to each other with secondary seal body 4 screw threads, and the upper pressing cap lower end is pressed with the cone seal packing; The secondary seal body links to each other with primary seal body screw thread; Be pressed with lower pressing cap and cone seal packing between the two seal central parts, between lower pressing cap top and primary seal body, be provided with the logical external flush connection of primary seal; Be threaded between primary seal body and the choke tube, be threaded between choke tube and the instrument catcher; Cable passes upper pressing cap, secondary seal body, and the set concentric holes of lower pressing cap, primary seal body, choke tube and instrument catcher links to each other with logging instrument.
When using the utility model, earlier 1 on cable is passed cap 2 respectively, secondary seal body 4 and cone seal packing 3, lower pressing cap 6, primary seal body 7 and cone seal packing 3, choke tube 8 is connected logging instrument with instrument catcher 9, step by step each parts are coupled together again, logging instrument is lowered in the lubricator, primary seal device 7 is connected with the lubricator top connection, adjust the elasticity of cone seal packing, open head valve, begin logging instrument down, in a following logging instrument and a logging instrument process, because well hydraulic pressure is very high, water can early decline once through leak stream and pressure of choke tube 8 along the water of the outside seepage of cable surface, cone seal packing 3 dampings in the primary seal body once again, again through flush connection 5 overflow parts, residue again through the cone seal dish damping of secondary seal body once, the basic leakproof water of upper pressing cap, the portion that only lacks is recovered in the container with flexible pipe from the water that overfall overflows, and well head is pollution-free substantially.If logging instrument has been answered back to well head, cable is disconnected to be taken off, and the instrument catcher will be caught the fishing head of logging instrument, can not fall into the shaft bottom, avoid salvaging.
Claims (4)
1, a kind of well logging well head double containment preventer, comprise by upper pressing cap, secondary seal body, cone seal packing, flush connection, lower pressing cap, primary seal body, secondary seal body, choke tube and instrument catcher and forming, the well head double containment preventer that it is characterized in that logging well is made as cylindrical, upper pressing cap links to each other with secondary seal body screw thread, and the upper pressing cap lower end is pressed with the cone seal packing; The secondary seal body links to each other with primary seal body screw thread; Be pressed with lower pressing cap and cone seal packing between the two seal central parts, between lower pressing cap top and primary seal body, be provided with the logical external flush connection of primary seal; Be threaded between primary seal body and the choke tube, be threaded between choke tube and the instrument catcher; Cable passes upper pressing cap, secondary seal body, and the set concentric holes of lower pressing cap, primary seal body, choke tube and instrument catcher links to each other with logging instrument.
2, according to the described well logging well head of claim 1 double containment preventer, it is characterized in that described primary seal body upper end is provided with box thread, link to each other with the upper pressing cap screw thread, below box thread, be provided with cone seal packing chamber, the bottom is provided with box thread, the inside on top is provided with lower pressing cap chamber and cone seal packing chamber from the top down, and the bottom is provided with box thread and male thread.
3, according to the described well logging well head of claim 1 double containment preventer, it is characterized in that described choke tube upper and lower end parts is provided with male thread, be provided with spiral choked flow groove in the centre bore week.
4, according to the described well logging well head of claim 1 double containment preventer, the center-hole diameter that it is characterized in that described instrument catcher middle part and bottom is greater than the central upper portion bore dia, outside the middle part thoughtful in Zhou Kaisan or four rectangular channels, 120 ° or 90 ° of angles, be provided with in the groove with the spacing arresting hook of rotating shaft location torsion spring under seizure head obliquely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820225413XU CN201280908Y (en) | 2008-11-07 | 2008-11-07 | Borehole log wellhead double-sealing blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820225413XU CN201280908Y (en) | 2008-11-07 | 2008-11-07 | Borehole log wellhead double-sealing blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201280908Y true CN201280908Y (en) | 2009-07-29 |
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ID=40927784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820225413XU Expired - Fee Related CN201280908Y (en) | 2008-11-07 | 2008-11-07 | Borehole log wellhead double-sealing blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201280908Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409991A (en) * | 2011-12-19 | 2012-04-11 | 西安思坦仪器股份有限公司 | Wellhead blowout prevention sealing device |
| CN102996092A (en) * | 2012-11-07 | 2013-03-27 | 宝鸡瑞林石油机电设备有限责任公司 | Hydraulic-control double-stage well test blowout preventer |
| CN104912510A (en) * | 2015-04-27 | 2015-09-16 | 大庆宏测技术服务有限公司 | Overflow reinjection blowout prevention system of injection well |
| CN105019852A (en) * | 2015-05-21 | 2015-11-04 | 中国石油化工股份有限公司 | Cable blowout preventer for achieving double-stage hydraulic sealing used for fracturing |
| CN108489761A (en) * | 2018-03-20 | 2018-09-04 | 国电科学技术研究院有限公司 | Powder prevents outer spray apparatus |
| CN114151050A (en) * | 2020-09-07 | 2022-03-08 | 大庆友声科技有限公司 | Well logging anti-spray head for oil field water injection well |
-
2008
- 2008-11-07 CN CNU200820225413XU patent/CN201280908Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409991A (en) * | 2011-12-19 | 2012-04-11 | 西安思坦仪器股份有限公司 | Wellhead blowout prevention sealing device |
| CN102996092A (en) * | 2012-11-07 | 2013-03-27 | 宝鸡瑞林石油机电设备有限责任公司 | Hydraulic-control double-stage well test blowout preventer |
| CN102996092B (en) * | 2012-11-07 | 2015-02-11 | 宝鸡瑞林石油机电设备有限责任公司 | Hydraulic-control double-stage well test blowout preventer |
| CN104912510A (en) * | 2015-04-27 | 2015-09-16 | 大庆宏测技术服务有限公司 | Overflow reinjection blowout prevention system of injection well |
| CN104912510B (en) * | 2015-04-27 | 2017-11-07 | 大庆宏测技术服务有限公司 | Injection well overflow re-injection spraying-preventing system |
| CN105019852A (en) * | 2015-05-21 | 2015-11-04 | 中国石油化工股份有限公司 | Cable blowout preventer for achieving double-stage hydraulic sealing used for fracturing |
| CN108489761A (en) * | 2018-03-20 | 2018-09-04 | 国电科学技术研究院有限公司 | Powder prevents outer spray apparatus |
| CN114151050A (en) * | 2020-09-07 | 2022-03-08 | 大庆友声科技有限公司 | Well logging anti-spray head for oil field water injection 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: 20090729 Termination date: 20091207 |