CN205778595U - A kind of dual stage shoulder nipple of composite - Google Patents
A kind of dual stage shoulder nipple of composite Download PDFInfo
- Publication number
- CN205778595U CN205778595U CN201620606314.0U CN201620606314U CN205778595U CN 205778595 U CN205778595 U CN 205778595U CN 201620606314 U CN201620606314 U CN 201620606314U CN 205778595 U CN205778595 U CN 205778595U
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- metal part
- female adapter
- nipple
- cylindrical metal
- torque shoulder
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Abstract
A kind of dual stage shoulder nipple of composite, internal and external screw thread joint when upper button, the first torque shoulder face contact of the first torque shoulder kept man of a noblewoman elder generation male connection of female thread；Along with the continuation of external screw thread stricture of vagina joint screws in, the second cylindrical section of male connection and hollow cylindrical metal part end contact, form the second torque shoulder；When torque value reaches preset value, complete button operation；This utility model efficiently solve the good contact problem in dual stage shoulder nipple two torque shoulder faces when upper button and use during " on secondary detain " problem, dual stage is made to take on the engagement that nipple keeps good at work, to be applicable to the complex working condition wells such as ultradeep well, ultra-long horizontal well, extended reach well, distance directional traversing.
Description
Technical field
This utility model relates to petroleum natural gas exploration field, is specifically related to the dual stage shoulder screw thread of a kind of composite
Joint.
Background technology
OCTG is oil and gas exploration and the important tool in exploitation.Various drilling tools, as drilling rod, heavy weight drill pipe,
Drill collar, adapter, tubing and casing etc., the mode being threaded connection forms whole endowel, to form the logical of drilling fluid or oil gas
Road, and under arms during bear the load of various complexity.As a example by drill string, drill string is not only the circulation canal of drilling fluid, and
And in drilling well, transmit moment of torsion, and bear tension and compression, bending, reverse and vibrate, the compound action of the multiple load such as impact.Drill string exists
Motion mode in drillng operation, in addition to around own axes rotation, the most usually revolves round the sun with borehole axis for axis, thus
Cause tool joint and the borehole wall or sleeve pipe generation fretting wear, produce return motion, make drilling tool thread there is the risk released.Soft
The interlock bit bouncing of the drill bit caused of hard formation can produce instantaneous reaction torque to drill string, makes drilling tool thread release.Additionally, because of
The inhomogeneities of drill bit fractured rock causes drill string to bear the longitudinal jerk load from formation reaction, also makes drill string
There is the risk released in nipple.It is true that the phenomenon that releases that drill string is in drilling operation course happens occasionally, thus cause
Drilling tool thread joint generation thread gluing inefficacy and friction and wear failure.Owing to threaded is released, the contact pressure in torque shoulder face
Power reduces, thus causes the thorn leakage effect in drilling tool thread torque shoulder face.Additionally, due to threaded releases, engage each other
Threaded stress change, occur local high stress areas, make threaded generation fatigue failure, cause screw thread
The thorn leakage of joint or fracture.These above-mentioned inefficacies have substantial amounts of record in the documents and materials of open report.Drilling tool thread connects
The raw reason released of hair mainly has the factor of following several respects: the complexity as above that (1) drilling tool thread joint bears
Load working condition；(2) in upper button operation, torque wrench moment upper button square value minimum less than the name of joint；(3) drilling tool thread connects at present
The self structure of head.The nipple of the most universal dual stage shoulder used, uses coarse thread.It is contacted in torque shoulder
Before, torque wrench moment value is the least, when torque shoulder contact after, torque value rapidly rise violently to set torque wrench moment value.It is to say,
When other factors such as vibrations or instantaneous reaction torque cause intermeshing joint circular bead surface that small reverse displacement occurs, spiral shell
The torque value of stricture of vagina joint can decline rapidly, the nipple after especially existing certain abrasion.This is to cause drilling tool thread to release
Structural agent.Additionally, due to the dimensional fits precision between dual stage shoulder two torque shoulder of drilling tool thread joint is high, in processing system
In making, dimensional tolerance is proposed strict requirements.During actual dual stage shoulder drilling tool thread joint uses, often occur
Two torque shoulder faces are not simultaneously in good contact state, and the stress distribution at the bottom of each thread of thread segment deviate from well nibbles
Stress distribution during conjunction state, partial screw threads tooth bottom, in high-stress state, causes the high stress fatigue of nipple to lose efficacy.
Utility model content
For solving the deficiencies in the prior art, this utility model provides the dual stage shoulder nipple of a kind of composite.
The technical solution of the utility model is: the dual stage of a kind of composite shoulder nipple, including female adapter and
Male connection, described female adapter includes joint body and hollow cylindrical metal part, and female adapter structure includes
First torque shoulder face, the first cylindrical section, internal thread segment, the second cylindrical section and hollow cylindrical metal part；Male connection bag
Include the first torque shoulder face, the first cylindrical section, external thread section, the second cylindrical section and the second torque shoulder face；Described female thread
The internal diameter of the second cylindrical section of joint is more than the external diameter of male connection the second cylindrical section；Hollow circle in described female adapter
The end face of column metal part is that the second cylindrical section of female adapter contacts holding of formation with the second cylindrical section of male connection
Section；The yield strength of the metalwork material of described hollow cylindrical metal part and the yield strength ratio of joint body material
It is 0.80 ~ 0.92；The percentage elongation of described hollow cylindrical metal part material is more than 13%, and yield tensile ratio is less than rushing under 0.85,20 ° of C
Hit absorption and can be more than 54J；The internal diameter of described hollow cylindrical metal part is identical with the internal diameter of female adapter, external diameter more than or
Equal to the internal diameter of female adapter the second cylindrical section, a length of 80 ~ 120mm；The internal thread segment of described female adapter and outer spiral shell
The external thread section range of taper of stricture of vagina joint is 1:6 ~ 1:16.
Described hollow cylindrical metal part and female adapter use the mode of hot charging or cold charge to assemble, female thread
Joint closely cooperates with hollow cylindrical metal part.
Distance between described female adapter the first torque shoulder face and hollow cylindrical metal part is turned round than external screw thread first
Square circular bead surface and the distance 0.06 ~ 0.15mm in the second torque shoulder face.
The beneficial effects of the utility model are: this utility model efficiently solve dual stage shoulder nipple upper button time two
" detaining on secondary " problem during the good contact problem in torque shoulder face and use, makes dual stage shoulder nipple at work
Keep good engagement, to be applicable to the complicated work such as ultradeep well, ultra-long horizontal well, extended reach well, distance directional traversing
Condition well.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1 for female adapter, 11 be the first torque shoulder face, 12 be the first cylindrical section, 13 for internal thread segment, 14
Be the second cylindrical section, 15 for hollow cylindrical metal part, 151 for hollow cylindrical metal part end face, 2 for male connection, 21
It is the first torque shoulder face, 22 is the first cylindrical section, 23 is external thread section, 24 is the second cylindrical section, 25 is the second torque shoulder
Face.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
The dual stage shoulder nipple of a kind of composite, including female adapter 1 and male connection 2, described interior spiral shell
Stricture of vagina joint 1 includes that joint body and hollow cylindrical metal part 15, female adapter 1 structure include the first torque shoulder face 11,
First cylindrical section 12, internal thread segment 13, the second cylindrical section 14 and hollow cylindrical metal part 15；Male connection 2 includes first
Torque shoulder face 21, the first cylindrical section 22, external thread section 23, the second cylindrical section 24 and the second torque shoulder face 25；Described is interior
The internal diameter of the second cylindrical section 14 of nipple 1 is more than the external diameter of male connection 2 second cylindrical section 24；Described female adapter
The of end face 151 is female adapter 1 second cylindrical section 14 of the hollow cylindrical metal part 15 in 1 and male connection 2
The loading end that two cylindrical section 24 contacts are formed；The yield strength of the metalwork material of described hollow cylindrical metal part 15 with connect
The yield strength ratio of head bulk material is 0.80 ~ 0.92；The percentage elongation of described hollow cylindrical metal part 15 material is more than
13%, yield tensile ratio can be more than 54J less than the impact absorbing under 0.85,20 ° of C；The internal diameter of described hollow cylindrical metal part 15 with
The internal diameter of female adapter 1 is identical, external diameter more than or equal to the internal diameter of female adapter 1 second cylindrical section 14, a length of 80 ~
120mm；The internal thread segment 13 of described female adapter 1 is 1:6 ~ 1:16 with external thread section 23 range of taper of male connection 2.
Described hollow cylindrical metal part 15 and female adapter 1 use the mode of hot charging or cold charge to assemble, interior
Nipple 1 closely cooperates with hollow cylindrical metal part 15.
Distance between described female adapter the first torque shoulder face 11 and hollow cylindrical metal part 15 is than external screw thread
One torque shoulder face 21 and the distance 0.06 ~ 0.15mm in the second torque shoulder face 25.
Use and above implement parameter, internal and external screw thread joint when upper button, the first torque shoulder face 11 of female thread first outside
First torque shoulder face 21 of nipple contacts；Along with the continuation of external screw thread stricture of vagina joint screws in, the second circle of male connection 2
Shell of column 24 contacts with hollow cylindrical metal part end face 151, forms the second torque shoulder 25；When torque value reaches preset value,
Complete button operation.
Implementing parameter more than using, internal and external screw thread joint is after upper button, and hollow cylindrical metal part end face 151 is because of elasticity
The elastic deformation energy that deformation produces produces the axial compressive force of pre-add on nipple, makes break-out torque increase, improves screw thread
The anti-loosening property of joint.
Implementing parameter more than using, internal and external screw thread joint, after upper button, is effectively guaranteed primary and secondary torque shoulder face
Good contact, makes double torque shoulder share torque load, raising torsional property and the design concept of fatigue life and has obtained fully
Realization, improve nipple use during security reliability.
Use and above implement parameter, internal and external screw thread joint after upper button, hollow cylindrical metal part end face 151 and outer spiral shell
There is effective contact pressure between stricture of vagina the second torque shoulder face 25, improve the sealing property of nipple.
Implementing parameter more than using, through test, the torsional strength of nipple carries relative to the API nipple of same specification
High by 40%.
Claims (3)
1. a dual stage shoulder nipple for composite, including female adapter and male connection, it is characterised in that: described
Female adapter include joint body and hollow cylindrical metal part, female adapter structure includes the first torque shoulder face,
First cylindrical section, internal thread segment, the second cylindrical section and hollow cylindrical metal part；Male connection includes the first torque shoulder
Face, the first cylindrical section, external thread section, the second cylindrical section and the second torque shoulder face；Second cylinder of described female adapter
The internal diameter of section is more than the external diameter of male connection the second cylindrical section；The end of the hollow cylindrical metal part in described female adapter
Face is that the second cylindrical section of female adapter contacts the loading end formed with the second cylindrical section of male connection；Described hollow
The yield strength of the metalwork material of cylindrical metal part and the yield strength ratio of joint body material are 0.80 ~ 0.92；Institute
The percentage elongation stating hollow cylindrical metal part material is more than 13%, and yield tensile ratio can be more than less than the impact absorbing under 0.85,20 ° of C
54J；The internal diameter of described hollow cylindrical metal part is identical with the internal diameter of female adapter, and external diameter connects more than or equal to female thread
The internal diameter of the second cylindrical section, a length of 80 ~ 120mm；The internal thread segment of described female adapter and the outer spiral shell of male connection
Stricture of vagina section range of taper is 1:6 ~ 1:16.
The dual stage shoulder nipple of a kind of composite the most according to claim 1, it is characterised in that: described hollow circle
Column metal part and female adapter use the mode of hot charging or cold charge to assemble, female adapter and hollow cylindrical metal
Closely cooperating of part.
The dual stage shoulder nipple of a kind of composite the most according to claim 1, it is characterised in that: described female thread connects
Distance between the first torque shoulder face and hollow cylindrical metal part is than external screw thread the first torque shoulder face and the second moment of torsion platform
Distance 0.06 ~ the 0.15mm in shoulder face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606314.0U CN205778595U (en) | 2016-06-21 | 2016-06-21 | A kind of dual stage shoulder nipple of composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606314.0U CN205778595U (en) | 2016-06-21 | 2016-06-21 | A kind of dual stage shoulder nipple of composite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778595U true CN205778595U (en) | 2016-12-07 |
Family
ID=58133033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620606314.0U Active CN205778595U (en) | 2016-06-21 | 2016-06-21 | A kind of dual stage shoulder nipple of composite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205778595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888571A (en) * | 2016-06-21 | 2016-08-24 | 东营威玛石油钻具有限公司 | Composite-material double-shoulder thread joint |
-
2016
- 2016-06-21 CN CN201620606314.0U patent/CN205778595U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888571A (en) * | 2016-06-21 | 2016-08-24 | 东营威玛石油钻具有限公司 | Composite-material double-shoulder thread joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 257091 No. 5 West Front Street, Shandong, Dongying Patentee after: Shandong Weima Equipment Technology Co., Ltd Address before: 257091 No.5 Fuqian street, Dongying City, Shandong Province Patentee before: DONGYING WEIMA PETROLEUM DRILLING TOOLS Co.,Ltd. |
|
| CP03 | Change of name, title or address |