CN208057068U - High abrasion tool joint - Google Patents
High abrasion tool joint Download PDFInfo
- Publication number
- CN208057068U CN208057068U CN201820470561.1U CN201820470561U CN208057068U CN 208057068 U CN208057068 U CN 208057068U CN 201820470561 U CN201820470561 U CN 201820470561U CN 208057068 U CN208057068 U CN 208057068U
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- joint body
- wearing bush
- circular bead
- pit
- thread
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Abstract
The utility model belongs to drilling tool technical field.Tool joint is easy to be worn and influence the connection of drilling rod in drilling process.For the problems of the prior art, the utility model discloses a kind of high abrasion tool joints, including joint body and box thread end and the male thread end at joint body both ends are set, joint body surface is arranged with wearing bush, wearing bush is equipped with several pits, and Non-smooth surface protrusion, the deep equality of raised height and pit are provided in each pit, it is interference fitted between protrusion and pit, arc surface transition is used at the top of protrusion and pit；Box thread end include perpendicular to the first axial outer circular bead surface, axially extending long straight cylinder hole, circular bead surface in internal thread and first successively；Male thread end includes circular bead surface, successively axially extending spherical surface, external screw thread, cylindrical surface and the second outer circular bead surface in axial second.The utility model tool joint is simple in structure, has higher wearability.
Description
Technical field
The utility model is related to a kind of connectors, and in particular to a kind of high abrasion tool joint belongs to drilling tool technology neck
Domain.
Background technology
In oil drilling, drilling rod not only connects Surface power drive equipment and down-hole equipment, while being also drilling fluid transmission
Channel, and drilling rod is connected often through tool joint.Traditional tool joint is usually the structure shape according to API standard defined
What formula was produced, in high angle hole and Horizontal Well Drilling into the process, tool joint can bear torsion, tension and compression, bending, vibration etc.
Combined load, tool joint are easy to be worn, to influence the connection between drilling rod.
Currently, generally improving drilling rod using one layer of special wear-resistant strip of weldering is covered in some position of tool joint both at home and abroad
The wearability of connector, however, due between wear-resistant strip and tool joint ontology material property difference it is big, weld the latter two binding forces
Difference is affected by environment and human factor, is easy to form crackle, and wear-resisting carrying material is easy to happen local shedding in drilling,
Tool joint and casing wear is caused to aggravate.
Utility model content
For the problems of the prior art, the utility model provides a kind of high abrasion tool joint, to improve tool joint
Wearability.
For the above technical purpose of realization, the technical solution of the utility model is：
A kind of high abrasion tool joint, including joint body and the box thread end at joint body both ends and public spiral shell are set
Line end, the joint body inner hollow setting, joint body surface are arranged with the wearing bush for enhancing connector wearability,
Wearing bush endoporus and joint body outer circle clearance fit, wearing bush are equipped with several pits, non-light are provided in each pit
Sliding protrusion, the deep equality of raised height and pit are interference fitted between protrusion and pit, using circle at the top of protrusion and pit
Cambered surface transition；The box thread end includes inner thread piece, the inner thread piece include perpendicular to the first axial outer circular bead surface,
Axially extending long straight cylinder hole, circular bead surface in internal thread and first successively；The male thread end includes external thread piece, described
External thread piece and inner thread piece coordinate, and external thread piece includes circular bead surface, successively axially extending length in axial second
Straight cylindrical surfaces, external screw thread, cylindrical surface and the second outer circular bead surface.The utility model tool joint has high intensity low friction system
Number can improve the wearability of tool joint, mitigate abrasion of the tool joint in drilling process.
Preferably, positive stop lug boss and limit external screw thread, the positive stop lug boss position are additionally provided on the joint body
In wearing bush side, for preventing wearing bush from being moved to axial side, the limit external screw thread is located at the wearing bush other side, limit
External screw thread is moved with limiting wearing bush to the axial other side by coordinating with pipe nut.
As further preferred scheme, the pipe nut is equipped with screw hole, and the limit external screw thread is equipped with threaded hole,
Trip bolt passes through screw hole and threaded hole to lock pipe nut with joint body, to prevent pipe nut from the limit on joint body
Position external screw thread moves back button.
Preferably, anti-abrasive coatings are additionally provided on the joint body, anti-abrasive coatings are coated on the installation of wearing bush
Place, to prevent from rubbing between wearing bush and joint body, further increases the wearability of tool joint.
Preferably, the external thread piece further includes stress-relief groove, and the stress-relief groove is set to platform in second
Between shoulder face and spherical surface.By the way that stress-relief groove is arranged, the stress concentration of tool joint can be effectively reduced, is carried
Its high torsional property.
Preferably, the inner thread piece further includes Surface of Sphere, and the Surface of Sphere is set to platform in internal thread and first
Between shoulder face, Surface of Sphere is sealed with cylindrical at Surface of Sphere/cylindrical surface.On Surface of Sphere and external thread piece on inner thread piece
Cylindrical at Surface of Sphere/cylindrical surface dot encapsulation can significantly improve the gas sealing ability of drilling rod.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model joint body；
Fig. 3 is the sectional view of the utility model wearing bush；
Fig. 4 is the structural schematic diagram of the external thread piece and inner thread piece in the utility model；
Fig. 5 is the partial enlarged view of external thread piece in the utility model；
Fig. 6 is the partial enlarged view of external thread piece in the utility model；
Partial enlarged view when Fig. 7 is external thread piece and inner thread piece cooperation in the utility model；
Reference numeral：
100. raised 120. positive stop lug boss 130. of 110. wearing bush of joint body, 111. pit 112. limit external screw thread
140. 200. box thread end of pipe nut 141. screw hole, 150. anti-abrasive coatings, 210. inner thread piece, 211. first outer shoulder
300. male thread end 310. of circular bead surface in 212. long 213. internal thread of straight cylinder hole of face, 214. Surface of Sphere 215. first
312. stress-relief groove of circular bead surface, 313. spherical surface, 314. external screw thread, 315. cylindrical surface in external thread piece 311. second
316. second outer circular bead surfaces
Specific implementation mode
In conjunction with Fig. 1 to Fig. 7, a specific embodiment of the utility model is described in detail, but not to the power of the utility model
Profit requires to do any restriction.
As shown in Figures 1 to 7, a kind of high abrasion tool joint, including joint body 100 and setting are in joint body 100
The box thread end 200 and male thread end 300 at both ends；
Be arranged with the wearing bush 110 for enhancing connector wearability on the joint body 100, wearing bush 110 by
Molybdenum disulfide, carbon dust and tin bronze are added in polytetrafluoroethylene (PTFE) to suppress, outside 110 endoporus of wearing bush and joint body 100
Circle clearance fit, wearing bush 110 are equipped with several pits 111, Non-smooth surface protrusion 112 are provided in each pit 111, protrusion
The deep equality of 112 height and pit 111, the diameter of protrusion 112 are more than the 0.001~0.1mm in 111 aperture of pit, protrusion
It is combined together by way of interference fit between 112 and pit 111, protrusion 112 and pit use spill between 111 top
Arc surface transition, the wearing bush with biomimetic features so designed while proof strength with compared with low-friction coefficient, can
To improve the wearability of connector；
Positive stop lug boss 120 and limit external screw thread 130 are additionally provided on the joint body 100, the positive stop lug boss 120 is located at
110 side of wearing bush, for preventing wearing bush 110 from being moved to axial side, 100 one of positive stop lug boss 120 and joint body at
Type, the limit external screw thread 130 are located at 110 other side of wearing bush, and limit external screw thread 130 with pipe nut 140 by coordinating to limit
Wearing bush 110 processed is moved to the axial other side.
Wherein, it to prevent pipe nut 140 from moving back button from the limit external screw thread 130 on joint body 100, is set on pipe nut 140
There are screw hole 141, limit external screw thread 130 to be equipped with threaded hole, trip bolt passes through screw hole 141 and threaded hole by pipe nut
140 is locked with joint body 100；To prevent from rubbing between wearing bush 110 and joint body 100, the resistance to of connector is further increased
Mill property, anti-abrasive coatings 150 are additionally provided on joint body 100, and anti-abrasive coatings 150 are coated on the installation place of wearing bush 110.
The box thread end 200 includes inner thread piece 210, and the inner thread piece 210 includes perpendicular to axial first
Circular bead surface 215 in outer circular bead surface 211, successively axially extending long straight cylinder hole 212, internal thread 213 and first；The male thread
End 300 includes external thread piece 310, and the external thread piece 310 and inner thread piece 210 coordinate, external thread piece 310 include perpendicular to
Circular bead surface 311 in axial second, successively axially extending spherical surface 313, external screw thread 314, cylindrical surface 315 and second
Outer circular bead surface 316, wherein when external thread piece 310 and inner thread piece 210 coordinate, long straight cylinder hole 212 and cylindrical surface 315 it
Between gap be 1.5mm.
In order to reduce the stress concentration of tool joint, in described second between circular bead surface 311 and spherical surface 313
Equipped with stress-relief groove 312, wherein the radius of stress-relief groove 312 is R1, groove depth H1, R1=5mm, H1=1.2mm；For
Stress concentration phenomenon is further decreased, preceding 3 pitch threads of circular bead surface 311 in second of the external thread piece 310 are cut respectively
Remove H2, H2=1.2mm.
In order to improve the gas sealing ability of the drilling rod connected by tool joint, shoulder in the internal thread 213 and first
Surface of Sphere 214 is equipped between face 215, the radius of Surface of Sphere 214 is R2, and the center location of R2=3.8mm, Surface of Sphere 214 are A,
The distance of circular bead surface 215 is m, m=13mm, Surface of Sphere 214 and 315 shape of cylindrical surface in circle center distance internal thread 213 210 first
It is sealed at 214/ cylindrical surface 315 of Surface of Sphere, interference volume 0.2mm.
In conclusion the utility model has the following advantages：
1. the utility model, can be notable by being arranged the wearing bush with high intensity low-friction coefficient on joint body
Improve the wearability of tool joint；By the wearing bush installation place coating anti-abrasive coatings on joint body, can further increase
The wearability of tool joint.
2. the utility model can effectively reduce tool joint by the way that a stress-relief groove is arranged in external screw thread shoulder transition position
Stress concentration, improve the torsional property of tool joint.
3. the utility model by the cylindrical on the Surface of Sphere and external thread piece on inner thread piece at dot encapsulation can
To significantly improve the gas sealing ability of the drilling rod connected by connector.
It is understood that above with respect to the specific descriptions of the utility model, it is merely to illustrate the utility model and is not
It is limited to technical solution described in the utility model embodiment.It will be understood by those of ordinary skill in the art that still can be with
It modifies to the utility model or equivalent replacement, to reach identical technique effect；Needs are used as long as meeting, all in this reality
Within novel protection domain.
Claims (6)
1. a kind of high abrasion tool joint, including joint body and it is arranged in the box thread end at joint body both ends and male thread
End, which is characterized in that the joint body inner hollow setting, joint body surface is arranged with for enhancing connector wearability
Wearing bush, wearing bush endoporus and joint body outer circle clearance fit, wearing bush is equipped with several pits, set in each pit
It is equipped with Non-smooth surface protrusion, the deep equality of raised height and pit is interference fitted between protrusion and pit, protrusion and pit top
Portion uses arc surface transition；The box thread end includes inner thread piece, and the inner thread piece includes perpendicular to axial first
Circular bead surface in outer circular bead surface, successively axially extending long straight cylinder hole, internal thread and first；The male thread end includes outer spiral shell
Line part, the external thread piece coordinate with inner thread piece, and external thread piece includes circular bead surface, successively axial direction in axial second
Spherical surface, external screw thread, cylindrical surface and the second outer circular bead surface of extension.
2. a kind of high abrasion tool joint as described in claim 1, which is characterized in that be additionally provided with limit on the joint body
Boss and limit external screw thread, the positive stop lug boss is located at wearing bush side, described for preventing wearing bush from being moved to axial side
Limit external screw thread is located at the wearing bush other side, and limit external screw thread with pipe nut by coordinating to limit wearing bush to the axial other side
It is mobile.
3. a kind of high abrasion tool joint as claimed in claim 2, which is characterized in that the pipe nut is equipped with screw hole,
The limit external screw thread is equipped with threaded hole, and trip bolt passes through screw hole and threaded hole to lock pipe nut with joint body.
4. a kind of high abrasion tool joint as described in claim 1, which is characterized in that be additionally provided with abrasionproof on the joint body
Coating, anti-abrasive coatings are coated on the installation place of wearing bush.
5. a kind of high abrasion tool joint as described in Claims 1 to 4 is any, which is characterized in that the external thread piece also wraps
Stress-relief groove is included, the stress-relief groove is set in second between circular bead surface and spherical surface.
6. a kind of high abrasion tool joint as described in Claims 1 to 4 is any, which is characterized in that the inner thread piece also wraps
Surface of Sphere is included, the Surface of Sphere is set in internal thread and first between circular bead surface, and Surface of Sphere is with cylindrical at Surface of Sphere/cylinder
Face seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820470561.1U CN208057068U (en) | 2018-04-04 | 2018-04-04 | High abrasion tool joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820470561.1U CN208057068U (en) | 2018-04-04 | 2018-04-04 | High abrasion tool joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057068U true CN208057068U (en) | 2018-11-06 |
Family
ID=63986800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820470561.1U Active CN208057068U (en) | 2018-04-04 | 2018-04-04 | High abrasion tool joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057068U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109463047A (en) * | 2018-12-14 | 2019-03-15 | 安徽省大地园林工程有限公司 | A kind of lawn perforator of park maintenance |
| CN109944557A (en) * | 2019-04-02 | 2019-06-28 | 中煤科工集团西安研究院有限公司 | Bionical pin end and its manufacturing procedure with spine structure characteristic |
| CN112253002A (en) * | 2020-10-26 | 2021-01-22 | 吉林大学 | Drilling rod with axial deep groove wear-resistant joint for well drilling |
| CN112727348A (en) * | 2021-01-26 | 2021-04-30 | 沧州格锐特钻头有限公司 | Multi-section drilling screw drilling tool |
| CN114961592A (en) * | 2022-07-11 | 2022-08-30 | 中国地质大学（北京） | Drill rod with diamond particle composite wear-resistant belt |
-
2018
- 2018-04-04 CN CN201820470561.1U patent/CN208057068U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109463047A (en) * | 2018-12-14 | 2019-03-15 | 安徽省大地园林工程有限公司 | A kind of lawn perforator of park maintenance |
| CN109944557A (en) * | 2019-04-02 | 2019-06-28 | 中煤科工集团西安研究院有限公司 | Bionical pin end and its manufacturing procedure with spine structure characteristic |
| CN109944557B (en) * | 2019-04-02 | 2020-07-10 | 中煤科工集团西安研究院有限公司 | Bionic male connector with structural characteristics of spine and processing procedure thereof |
| CN112253002A (en) * | 2020-10-26 | 2021-01-22 | 吉林大学 | Drilling rod with axial deep groove wear-resistant joint for well drilling |
| CN112727348A (en) * | 2021-01-26 | 2021-04-30 | 沧州格锐特钻头有限公司 | Multi-section drilling screw drilling tool |
| CN114961592A (en) * | 2022-07-11 | 2022-08-30 | 中国地质大学（北京） | Drill rod with diamond particle composite wear-resistant belt |
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