CN202946083U - Oil pipe joint hoop backing-off device for slim hole well - Google Patents
Oil pipe joint hoop backing-off device for slim hole well Download PDFInfo
- Publication number
- CN202946083U CN202946083U CN 201220698201 CN201220698201U CN202946083U CN 202946083 U CN202946083 U CN 202946083U CN 201220698201 CN201220698201 CN 201220698201 CN 201220698201 U CN201220698201 U CN 201220698201U CN 202946083 U CN202946083 U CN 202946083U
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- CN
- China
- Prior art keywords
- oil pipe
- pipe joint
- backing
- conical surface
- hole well
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- 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 discloses an oil pipe joint hoop backing-off device for a slim hole well. The oil pipe joint hoop backing-off device comprises a drilling rod joint, a six-edge shaft sleeve mounted in an inner cavity at the lower part of the drilling rod joint, and a conical surface core shaft which penetrates through the six-edge shaft sleeve, is in screwed connection with the inner cavity of the drill rod joint and is used for expanding the six-edge shaft sleeve, wherein a through hole water hole is formed in the conical surface core shaft along the axis. The oil pipe joint hoop backing-off device disclosed by the utility model has the beneficial effects that falling objects are fished and the fishing strength can be guaranteed; the fishing success rate is high aiming at that a clamped oil pipe can be rotated oppositely and unclamped; and if special conditions happen, a tool can be quitted and secondary accidents can be avoided.
Description
Technical field
The utility model relates to a kind of oil-water well overhaul construction fishing tool, particularly a kind of slim hole well oil pipe joint hoop reverse buckling equipment that can solve the complicated state that the slim hole well inner oil tube blocked.
Background technology
Slim hole well refers to that the sleeve pipe standard less than the well of conventional well (the sleeve pipe standard is D139.7mm), common are D127mm sleeve pipe, D114.3mm sleeve pipe, D95.25mm sleeve pipe etc.Slim hole well causes annular clearance minimum because casing inner diameter is little, and fishing tool must have suitable standard, must go, drag under guarantee.Than conventional well, identical junk, slim hole well fishing tool appearance and size, wall thickness must reduce, and this has also directly reduced the intensity of instrument.But the upper lifting force that needs when salvaging junk can not diminish and diminishes with hole diameter, therefore, changes tool construction, and the enhancing instrument is salvaged intensity, could really carry out slim hole well and salvage.
The instrument of the tubing of slim hole well salvaging at present junk is seldom salvaged the stuck pipe post extremely difficult especially.Outer fishing combined tool can't use, and interior fishing combined tool can't guaranteed strength, and the back-off difficulty.Commonly used left hand fishing spear during as fishing oil pipe, because shaft and joint are screwed connection, carrying on energetically can not guaranteed strength, and the experience of the well of in the past constructing has also proved this point; And select returnable fishing spear to carry out activity unfreezing, back-off, intensity is slightly good, but because the special construction that the returnable fishing spear counter-rotating is withdrawed from causes reversing the unfreezing junk, how can throw off dragging for lance slips place during operation, can't unfreezing.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of assurance and salvages intensity, can bear strong moment of torsion, can drag for the slim hole well oil pipe joint hoop reverse buckling equipment that can move back rotatable unfreezing.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of slim hole well oil pipe joint hoop reverse buckling equipment, comprise tool joint, be arranged on six-edged axis cover in described tool joint lower lumen, pass the conical surface mandrel that is used for strutting described six-edged axis cover of described six-edged axis cover and the screwed connection of described tool joint inner chamber, described conical surface mandrel is provided with along axis the through hole hydrophthalmia that a diameter is 12mm.Adopt the six-edged axis Analysis of Nested Design, can better transmitting torque, also can bear larger moment of torsion, can not cause the instrument damage because of reaction torque; The design of the conical surface of conical surface mandrel bottom is used to provide the grasp of salvaging junk, by on carry drilling tool conical surface mandrel moved upward, the six-edged axis cover moves downward relatively, six-edged axis cover end opens, when having guaranteed back-off, instrument can not backed out at this; As can't complete back-off, can be by handling and rotary moveable unfreezing, the also instrument of beating back out down.
The beneficial effects of the utility model are to salvage junk can guarantee to salvage intensity, and for the unfreezing of can being reversed by the card oil pipe, fishing success ratio is high; Can withdraw from instrument as special circumstances, avoid second accident.
Description of drawings
The slim hole well oil pipe joint that Fig. 1 provides for the utility model binds round the structural representation of reverse buckling equipment.
The specific embodiment
From the utility model embodiment shown in Figure 1 as can be known:
The utility model slim hole well oil pipe joint hoop reverse buckling equipment, the six-edged axis that comprises tool joint 1, is arranged in described tool joint 1 lower lumen overlaps 2, passes the conical surface mandrel 3 that is used for strutting described six-edged axis cover 2 of described six-edged axis cover 2 and described tool joint 1 inner chamber screwed connection, and described conical surface mandrel 3 is provided with along axis the through hole hydrophthalmia 4 that a diameter is 12mm.
Adopt the six-edged axis Analysis of Nested Design, can better transmitting torque, also can bear larger moment of torsion, can not cause the instrument damage because of reaction torque; The design of the conical surface of conical surface mandrel 3 bottoms is used to provide the grasp of salvaging junk, by on carry drilling tool conical surface mandrel 3 moved upward, the six-edged axis cover moves downward relatively, six-edged axis cover end opens, when having guaranteed back-off, instrument can not backed out at this; As can't complete back-off, can be by handling and rotary moveable unfreezing, the also instrument of beating back out down.
In the D127mm sleeve pipe, this joint coordinates the D60.3mm drilling tool to enter the D73.02mm oil pipe that the well salvaging is blocked, after rinsing top of fish, make-up is rotated in pressurization, on carry drilling tool, six-edged axis cover 2 is opened, promptly the junk box cupling, propose the operation of unfreezing or back-off on then carrying out according to field condition, as accident occurs and can hit down counter-rotating and withdraw from instrument.
In sum, content of the present utility model is not limited in the above-described embodiments, and those skilled in the art can propose other embodiment easily according to guiding theory of the present utility model, within these embodiments all are included in scope of the present utility model.
Claims (2)
1. a slim hole well oil pipe joint binds round reverse buckling equipment, it is characterized in that: comprise tool joint (1), be arranged on six-edged axis cover (2) in described tool joint (1) lower lumen, pass the conical surface mandrel (3) that is used for strutting described six-edged axis cover (2) of described six-edged axis cover (2) and described tool joint (1) inner chamber screwed connection, described conical surface mandrel (3) is provided with a through hole hydrophthalmia (4) along axis.
2. slim hole well oil pipe joint according to claim 1 binds round reverse buckling equipment, and it is characterized in that: the diameter of described through hole hydrophthalmia (4) is 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698201 CN202946083U (en) | 2012-12-17 | 2012-12-17 | Oil pipe joint hoop backing-off device for slim hole well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698201 CN202946083U (en) | 2012-12-17 | 2012-12-17 | Oil pipe joint hoop backing-off device for slim hole well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946083U true CN202946083U (en) | 2013-05-22 |
Family
ID=48421790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220698201 Expired - Fee Related CN202946083U (en) | 2012-12-17 | 2012-12-17 | Oil pipe joint hoop backing-off device for slim hole well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
-
2012
- 2012-12-17 CN CN 201220698201 patent/CN202946083U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
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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: 20130522 Termination date: 20161217 |