CN208734300U - A kind of hanger back-off sub - Google Patents
A kind of hanger back-off sub Download PDFInfo
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- CN208734300U CN208734300U CN201821241384.6U CN201821241384U CN208734300U CN 208734300 U CN208734300 U CN 208734300U CN 201821241384 U CN201821241384 U CN 201821241384U CN 208734300 U CN208734300 U CN 208734300U
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- lower contact
- giving
- groove
- conical surface
- top connection
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Abstract
A kind of hanger back-off sub, it include: top connection and lower contact, the top connection is columnar structured, it is characterized in that, being equipped with bearing installation position on the inside of upper end, middle part wall thickness is greater than the top and bottom wall thickness, flowing hole is equipped at the lower end thin-walled, the lower contact bottom is boss structure, the boss structure and the top connection periphery tapering transition, and the periphery angle of taper is 30 degree；The lower contact is columnar structured, topmost inside is that inner conical surface and the outer conical surface cooperate, the inner conical surface angle of taper is 30 degree, it is the first groove in the middle part of the inner conical surface, first groove lower part is equipped with back-off screw thread, and it is tapered thread button that lower contact bottom described in the second groove is equipped with inside the lower contact lower end.The utility model has guaranteed smooth tripping in electrical measurement tool or other tools after well, has improved well, logging efficiency.
Description
Technical field
It is specifically a kind of to make the outstanding of the smooth tripping in of logging tool the utility model relates to a kind of oil field operation hanging tool
Hanging device back-off sub.
Background technique
Existing hanger is given up mostly using the mode for above mentioning central tube after back-off, and splice failure, realization up and down are lost
Hand after giving up, needs tripping in logging tool to detect total completion time, but during logging tool tripping in, because giving up
Lower contact upper end is planar structure, and logging tool is easy to be stuck in top connection end face of giving up, and logging tool tripping in is be easy to cause to meet
The case where resistance.
Utility model content
Technical problem to be solved in the utility model is in view of the above drawbacks of the prior art, to provide a kind of hanger and lose
Hand structure, in use, hanger top connection are coupled with lower contact, are taper on the inside of lower contact upper end after giving up
Structure, during logging tool tripping in, logging tool can enter along tapered surface give up lower contact inner cavity, and by lower contact into
Enter and carries out logging operation in casing.
To achieve the goals above, the utility model provides a kind of hanger back-off sub, wherein includes:
It gives up top connection and lower contact of giving up, the top connection of giving up is columnar structured, wherein axis is equipped on the inside of upper end
Hold installation position, middle part wall thickness is greater than the top and bottom wall thickness, is equipped with flowing hole at the lower end thin-walled, it is described give up on connect
Head bottom is boss structure, is outer conical surface, the outer circle between the boss structure and the top connection periphery of giving up
Conical surface angle of taper is 30 degree；The lower contact of giving up is columnar structured, is internal conical surface and the outer circle on the inside of the top
Cone match, the internal conical surface angle of taper are 30 degree, are the first groove in the middle part of the internal conical surface, under first groove
Portion is equipped with back-off screw thread, the second groove is equipped with inside the lower contact lower end of giving up, the lower contact bottom of giving up is taper
Screw thread.
Above-mentioned hanger back-off sub, wherein the bearing installation position described in inside top connection of giving up is connect with bearing,
It is connect on the inside of middle part wall thickness position with back-off connector, spring is equipped in the lower end thin-walled, the flowing hole is circumference side
To four uniformly distributed holes.
Above-mentioned hanger back-off sub, wherein the back-off screw thread is connect with back-off nut, first groove and institute
Boss structure cooperation is stated, second groove is connect with block, and inner cylinder face and the sealing fuse on second groove top are matched
It closes.
Above-mentioned hanger back-off sub, wherein the lower contact upper end outer circumferential of giving up is equipped with 6 uniformly distributed reinforcements
Muscle.
The utility model is described in detail below in conjunction with the drawings and specific embodiments, but not as to the utility model
Restriction.
Detailed description of the invention
Fig. 1 is the hanger structural schematic diagram of the prior art.
Fig. 2 is the hanger structural schematic diagram of an embodiment of the present invention.
Fig. 3 is the top connection structural schematic diagram of giving up of an embodiment of the present invention.
Fig. 4 is the lower contact structural schematic diagram of giving up of an embodiment of the present invention.
Fig. 5 is the lower contact overlooking structure diagram of giving up of an embodiment of the present invention.
Wherein, appended drawing reference
1 promotes short circuit
2 bearings
3 give up top connection
31 bearing installation positions
32 middle parts wall thickness position
33 flowing holes
34 lower end thin-walleds
35 outer conical surfaces
36 boss structures
4 springs
5 back-off nuts
6 back-off connectors
7 give up lower contact
71 internal conical surfaces
72 first grooves
73 back-off screw threads
74 second grooves
75 tapered threads
76 reinforcing ribs
8 sealing fuses
9 blocks
10 central tubes.
Specific embodiment
The structural principle of the utility model and working principle are described in detail with reference to the accompanying drawing:
It is the hanger structural schematic diagram of the prior art referring to Fig. 1, Fig. 1.The hanger of the prior art during the work time,
Hanger lower end connecting sleeve, when specific bit postpones in entire hanger tripping in oil/gas well, after hanger suspension, well head drilling tool is driven
Dynamic promoted is shorted 1 rotating forward, and the promotion is shorted 1 and back-off connector 6 and central tube 10 is driven to rotate forward, at this point, 6 band of back-off connector
Dynamic back-off nut 5 rotates forward, and makes the back-off nut 5 and the disengaging of lower contact 7 of giving up, and realization is given up.It cements the well, completes after giving up
After well cementation, above mention the promotion be shorted 1 propose the back-off top connection 3, the back-off nut 5, seal fuse 8, block 9 and in
Heart pipe 10 only stays the casing of give up lower contact 7 and its connection in well.7 the top circumference of lower contact of giving up because described in is
Plane is easily stuck in lower contact 7 of giving up on transverse plane in tripping in logging tool and other oil tools, operation is caused to lose
It loses.
Referring to fig. 2, Fig. 2 is the hanger structural schematic diagram using the utility model.It is described to give up described in 3 inside of top connection
Bearing installation position 31 is connect with bearing 2, and 32 inside of middle part wall thickness position is connect with back-off connector 6, the lower end thin-walled 34
Interior to be equipped with spring 4, the flowing hole 33 is four uniformly distributed holes of circumferencial direction.The back-off screw thread 73 is connect with back-off nut 5,
First groove 72 cooperates with the boss structure 36, and second groove 74 is connect with block 9, on second groove 74
The inner cylinder face and sealing fuse 8 in portion cooperate.
Referring to Fig. 3, Fig. 3 is the top connection structural schematic diagram of giving up of the utility model.The top connection 3 of giving up is cylindrical shape
Structure, which is characterized in that bearing installation position 31 is equipped on the inside of upper end, middle part wall thickness is greater than the top and bottom wall thickness, described
Flowing hole 33 is equipped at lower end thin-walled 34, the top connection bottom is boss structure 36, and the boss structure 36 is lost with described
It is on hand outer conical surface 35 between 3 periphery of connector, the periphery angle of taper is 30 degree；
Referring to fig. 4, Fig. 4 is the lower contact structural schematic diagram of giving up of the utility model.The lower contact 7 of giving up is cylindrical shape
Structure, topmost inside is that internal conical surface 71 and the outer conical surface 35 cooperate, and 71 angle of taper of internal conical surface is 30 degree,
It is the first groove 72 in the middle part of the internal conical surface 71,72 lower part of the first groove is equipped with back-off screw thread 73, and described give up down connects
The second groove 74 is equipped with inside first 7 lower end, 7 bottom of lower contact of giving up is tapered thread 75.
Referring to Fig. 5, Fig. 5 is the lower contact overlooking structure diagram of giving up of the utility model.Lower contact upper end outer circle
Week is equipped with 6 uniformly distributed reinforcing ribs 76.
Identical as the hanger of the above-mentioned prior art using the hanger operation process of the utility model, described give up down connects
First 7 and its casing of connection keep in well, it is described give up after be pyramidal structure on the inside of lower contact upper end, in logging tool tripping in
Cheng Zhong, logging tool can be along 7 inner cavity of lower contact of giving up described in tapered surface entrance, and passes through in the lower contact sleeve pipe and carry out
Logging operation guarantees the smooth implementation of logging operation.
Claims (4)
1. a kind of hanger back-off sub, comprising: give up top connection and lower contact of giving up, the top connection of giving up is cylinder-shaped knot
Structure, which is characterized in that bearing installation position is equipped on the inside of upper end, middle part wall thickness is greater than the top and bottom wall thickness, the lower end
Flowing hole is equipped at thin-walled, the top connection bottom is boss structure, the boss structure and the top connection outer circle of giving up
It is outer conical surface between face, the periphery angle of taper is 30 degree；It is described give up lower contact be it is columnar structured, in the top
Side is that internal conical surface is connect with the periphery taper fit, and the internal conical surface angle of taper is 30 degree, the internal conical surface
Middle part is the first groove, and first groove lower part is equipped with back-off screw thread, and it is recessed to be equipped with second inside the lower contact lower end of giving up
Slot, the lower contact bottom of giving up is tapered thread.
2. hanger back-off sub as described in claim 1, which is characterized in that bearing installation position described in the inside top connection
It is connect with bearing, is connect on the inside of middle part wall thickness position with back-off connector, spring, the overcurrent are equipped in the lower end thin-walled
Hole is four uniformly distributed holes of circumferencial direction.
3. hanger back-off sub as described in claim 1, which is characterized in that the back-off screw thread is connect with back-off nut,
First groove and the boss structure cooperate, and second groove is connect with block, the inner circle on second groove top
Cylinder and sealing fuse cooperation.
4. hanger back-off sub as described in claim 1, which is characterized in that the lower contact upper end outer circumferential is equipped with 6
Uniformly distributed reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821241384.6U CN208734300U (en) | 2018-08-03 | 2018-08-03 | A kind of hanger back-off sub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821241384.6U CN208734300U (en) | 2018-08-03 | 2018-08-03 | A kind of hanger back-off sub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208734300U true CN208734300U (en) | 2019-04-12 |
Family
ID=66028123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821241384.6U Active CN208734300U (en) | 2018-08-03 | 2018-08-03 | A kind of hanger back-off sub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208734300U (en) |
-
2018
- 2018-08-03 CN CN201821241384.6U patent/CN208734300U/en active Active
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