CN200989170Y - Oil well pipe column safety joint - Google Patents
Oil well pipe column safety joint Download PDFInfo
- Publication number
- CN200989170Y CN200989170Y CN 200620010980 CN200620010980U CN200989170Y CN 200989170 Y CN200989170 Y CN 200989170Y CN 200620010980 CN200620010980 CN 200620010980 CN 200620010980 U CN200620010980 U CN 200620010980U CN 200989170 Y CN200989170 Y CN 200989170Y
- Authority
- CN
- China
- Prior art keywords
- flat
- joint
- pipe
- tubular member
- 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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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to a safety joint for the oil well pipe post, comprising a joint and a joint short piece. The utility model is characterized in that a tubing coupling is arranged at the upper part of the joint; a flat tube is arranged in the middle part; a flat-thin male tubular member is arranged in the lower part; the outside diameter of the flat-thin male tubular member is greater than the diameter of the flat tube; the length of flat tube is greater than that of the flat-thin male tubular member; a flat-thin female tubular member is arranged in the upper part of the joint short piece; a flat tube is arranged in the middle part; an oil tube female tubular member is arranged in the mid-lower part; a male tubular member is arranged in the lower part; the flat thin female tubular member is connected with the flat thin male tubular member of the joint; the length of the flat tube of the joint short piece is slightly greater than that of the flat tube of joint. The safety joint has the advantages of the high temperature and pressure resistance and the easiness of stuck releasing.
Description
One, technical field
The utility model relates to the oil well pipe safety joint that a kind of oil well pipe that oil field development uses connects usefulness.
Two, background technology
Existing safety joint, complex structure, volume is big, materials are many, maximum outside diameter 110mm, length 458mm, operating pressure 5.0Mpa, heatproof is below 100 ℃, structure is that top connection and lower contact two parts are formed, connect with 4 pins between it, with O-ring seals sealing, can not high temperature high voltage resistant, the tubing string that can only be suitable for the low-temp low-pressure well connects, can't be connected with it for metal wool pipe in the thermal recovery oil well pipe and wrapping wire pipe are middle, this joint is not suitable for the thermal recovery oil well, and annual for this reason well workover is pulled out wrapping wire and metal wool chimney filter because of rising, and causes that the workover cost of bit freezing overhaul just needs millions of units.
Three, summary of the invention
The purpose of this utility model provides a kind of oil well pipe safety joint, solves above-mentioned prior art and is not suitable for the problem that the heavy crude heat extraction oil well pipe connects.
The technical solution of the utility model realizes in the following manner:
The utility model by joint be connected pipe nipple and form, it is characterized in that joint top is made as tubing coupling, the middle part is made as flat pipe, the bottom is made as flat thin pin thread, flat thin pin thread external diameter is greater than flat pipe diameter, flat length of tube is greater than flat thin pin thread length; Connect pipe nipple top and be made as flat thin box, the middle part is made as flat pipe, and the middle and lower part is made as the oil pipe box, and the bottom is made as the oil pipe pin thread, and flat thin box is connected with the flat thin pin thread of joint; The flat length of tube that connects pipe nipple is slightly larger than the flat length of tube of joint.
Compared with the prior art the utility model has the following advantages:
1, simple in structure, volume is little, be skillfully constructed, tight without sealing ring, sealing.
2, need not cut off ingot, as long as flat thin pin thread is twisted dropout downwards, strengthen tube drawing post on the load again, thin button is drawn bad, tubing string can be proposed.
3, connecting the pipe nipple middle and lower part is provided with the oil pipe box, when salvaging, needs only and can pull following anti-sandpipe out last button.
4, compliance is strong, and general oil well and thick oil thermal extraction can both use.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model
1-joint 2-connects pipe nipple among the figure
Five, the specific embodiment
For further disclosing the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
The utility model by joint 1 be connected pipe nipple 2 and form, joint top is made as tubing coupling, the middle part is made as flat pipe, the bottom is made as flat thin pin thread, flat thin pin thread external diameter is greater than flat pipe diameter, flat length of tube is greater than flat thin pin thread length; Connect pipe nipple top and be made as flat thin box, the middle part is made as flat pipe, and the middle and lower part is made as the oil pipe box, and the bottom is made as the oil pipe pin thread, and flat thin box is connected with the flat thin pin thread of joint; The flat length of tube that connects pipe nipple is slightly larger than the flat length of tube of joint.
The utility model is used for high temperature and annotates the metal wool filter sand control pipe of vapour well or wrapping wire pipe gravel and dash and fill out sand control pipe, general steamed well or producing well, well depth is about 1500 meters～2000 meters, annotating vapour interval or producing interval, generally below 1300 meters, to annotate high steam at this interval, pressure is generally more than 18Mpa, because the pressure height causes the stratum silt particle of annotating the vapour interval soft, cave in, block annotating vapour interval or producing interval, Deng changing when annotating vapour distributor or oil recovery distributor or change that layer is annotated vapour or when recovering the oil, tubing string just rises not come out, and causes and annotates vapour well or producing well overhaul.For addressing this problem, to descend anti-sandpipe of metal wool filter or wrapping wire pipe gravel to prevent that towards filling out sand control pipe the problems referred to above from taking place at this interval, every 4 to 5 meters of anti-sandpipes, under this interval more than 100 meter, just connect between the every anti-sandpipe and use the oil well pipe safety joint, its joint 1 box is connected with the oil pipe pin thread, and its pin thread that connects pipe nipple 2 is connected with the box of anti-sandpipe, the company of one one of anti-sandpipe is gone down, up to the design total length of anti-sandpipe.
When high temperature (more than 200 ℃) high pressure (more than the 18Mpa) are annotated the vapour well, annotating vapour annotated after the stage, need change when annotating the vapour distributor or changing anti-sandpipe, the whole tubing string that needs to annotate the vapour well all rises out, in the process that rises as meet the sand card, tubing string rises motionless, rotate tubing string this moment, the flat thin pin thread of oil well pipe safety joint is threaded off, trip out the above tubing string of trip point, salvage the following tubing string of trip point again, salvage the anchor lower end and be provided with the oil pipe pin thread, the oil pipe box that is provided with the connection pipe nipple middle and lower part of oil well pipe safety joint is make-up mutually, aligning is tightened, and after tightening, the anti-sandpipe of sand card is tripped out.The use of HTHP safety joint has been avoided annotating the overhaul of vapour well or scrapping, and has solved the practical problem in the production management.
Claims (1)
1, a kind of oil well pipe safety joint, by joint be connected pipe nipple and form, it is characterized in that joint top is made as tubing coupling, the middle part is made as flat pipe, the bottom is made as flat thin pin thread, flat thin pin thread external diameter is greater than flat pipe diameter, flat length of tube is greater than flat thin pin thread length; Connect pipe nipple top and be made as flat thin box, the middle part is made as flat pipe, and the middle and lower part is made as the oil pipe box, and the bottom is made as the oil pipe pin thread, and flat thin box is connected with the flat thin pin thread of joint; The flat length of tube that connects pipe nipple is slightly larger than the flat length of tube of joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010980 CN200989170Y (en) | 2006-10-20 | 2006-10-20 | Oil well pipe column safety joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010980 CN200989170Y (en) | 2006-10-20 | 2006-10-20 | Oil well pipe column safety joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989170Y true CN200989170Y (en) | 2007-12-12 |
Family
ID=38940207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620010980 Expired - Fee Related CN200989170Y (en) | 2006-10-20 | 2006-10-20 | Oil well pipe column safety joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989170Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762211A (en) * | 2019-11-22 | 2020-02-07 | 李国栋 | Oil well is with thermal-insulated heat preservation abrasionproof oil pipe pin end sealing device |
-
2006
- 2006-10-20 CN CN 200620010980 patent/CN200989170Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762211A (en) * | 2019-11-22 | 2020-02-07 | 李国栋 | Oil well is with thermal-insulated heat preservation abrasionproof oil pipe pin end sealing device |
| CN110762211B (en) * | 2019-11-22 | 2024-06-11 | 李国栋 | Heat-insulating wear-proof oil pipe pin end sealing device for oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |