CN212130418U - Integrally-weighted drill rod joint thread - Google Patents
Integrally-weighted drill rod joint thread Download PDFInfo
- Publication number
- CN212130418U CN212130418U CN202022421539.8U CN202022421539U CN212130418U CN 212130418 U CN212130418 U CN 212130418U CN 202022421539 U CN202022421539 U CN 202022421539U CN 212130418 U CN212130418 U CN 212130418U
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- section
- joint
- shoulder
- lubricating
- sealing surface
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- 230000001050 lubricating effect Effects 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 238000005553 drilling Methods 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims 4
- 238000003754 machining Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model relates to the field of machining, and provides an integrally-weighted drill pipe joint thread, wherein an external thread section is arranged on a male joint, the two ends of the external thread section are a lubricating section A and a lubricating section B, one end of the lubricating section B far away from the external thread section is a male joint auxiliary shoulder, and one end of the lubricating section A far away from the external thread section is a male joint main shoulder sealing surface; the female joint is provided with an internal thread section, the two ends of the internal thread section are a lubricating section C and a lubricating section D, one end of the lubricating section C far away from the internal thread section is a female joint auxiliary shoulder, the female joint auxiliary shoulder is matched with the male joint auxiliary shoulder, one end of the lubricating section D far away from the internal thread section is a female joint main shoulder sealing surface, and the female joint main shoulder sealing surface is matched with the male joint main shoulder sealing surface; has the advantages that: the utility model discloses bear torsional strength ability and improve more than 25%, bear interior pressure ability and improve more than 30%, upward detain efficiency and improve more than 40%.
Description
Technical Field
The utility model belongs to the technical field of machining and specifically relates to a wholly aggravate tool joint screw thread.
Background
In the oil and gas exploitation and exploration industry, a drill string is an important tool for drilling and is a junction for connecting the ground and the underground. It is used to transfer the energy needed to break rock, apply weight on the bottom of the well, and deliver flushing fluid into the well. During drilling, the operation of the drill bit, the condition of the borehole, and various changes in the downhole formation are typically reflected to the surface by the drill string and various instruments. Reasonable drilling technical parameters and other technical measures can be realized only under the condition of correctly using a drill string.
During drilling, the drill string operates primarily in both tripping and normal drilling conditions. When the drill string is used for drilling, the drill string does not contact the bottom of the well, the whole drill string is in a suspension state, and under the action of self weight, the drill string is in a stretched linear stable state. During normal drilling, the lower drill string is compressed due to the weight of a section of the drill string being applied as weight on bit. In the case of rotation, the forces acting on the drill string, in addition to tensile and compressive forces, also include centrifugal forces due to the rotation. Under the action of various composite alternating stresses, the drill string is prone to fatigue failure.
CN204060543U discloses an anti-torsion oil drill pipe joint, comprising: the male connector comprises a male connector body, a female connector body, a male connector main shoulder sealing surface, a female connector main shoulder sealing surface, a male connector auxiliary shoulder, a female connector auxiliary shoulder, an external thread section, an internal thread section, a male connector conical surface and a female connector conical surface, wherein one end of the male connector body is sequentially connected with the male connector conical surface and the male connector auxiliary shoulder, one end of the female connector body is sequentially connected with the female connector conical surface and the female connector auxiliary shoulder, the other end of the male connector body is connected with the male connector main shoulder sealing surface, the other end of the female connector body is connected with the female connector main shoulder sealing surface, the external thread section is arranged between the male connector main shoulder sealing surface and the male connector conical surface, the internal thread section is arranged between the female connector main shoulder sealing surface and the female connector conical surface, the external thread auxiliary shoulder length is longer than the length of a double-shoulder external thread of the same specification, and the internal thread auxiliary shoulder length.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the not enough of prior art, and provide a wholly aggravate tool joint screw thread.
The utility model discloses new technical scheme is: an integrally-weighted drill rod joint thread comprises a male joint main shoulder sealing surface, a female joint main shoulder sealing surface, a lubricating section, an internal thread section, a female joint auxiliary shoulder, a male joint auxiliary shoulder, an external thread section and a male joint, wherein the male joint is provided with the external thread section, the two ends of the external thread section are a lubricating section A and a lubricating section B, one end of the lubricating section B far away from the external thread section is the male joint auxiliary shoulder, and one end of the lubricating section A far away from the external thread section is the male joint main shoulder sealing surface; the female joint is provided with an internal thread section, the two ends of the internal thread section are a lubricating section C and a lubricating section D, one end of the lubricating section C, far away from the internal thread section, is a female joint auxiliary shoulder, the female joint auxiliary shoulder is matched with the male joint auxiliary shoulder, one end of the lubricating section D, far away from the internal thread section, is a female joint main shoulder sealing surface, and the female joint main shoulder sealing surface is matched with the male joint main shoulder sealing surface; the difference between the distance from the secondary shoulder of the female joint to the sealing surface of the primary shoulder of the female joint and the distance from the sealing surface of the primary shoulder of the male joint to the secondary shoulder of the male joint is 0-0.25 mm; the distance from the sealing surface of the main shoulder of the male connector to the auxiliary shoulder of the male connector is 12.7-25.4 mm longer than that of the male connector with the same outer diameter listed in the API standard.
And a gap is reserved between the lubricating section A and the lubricating section D.
And a gap is reserved between the lubricating section B and the lubricating section C.
The distance from the secondary shoulder of the female joint to the sealing surface of the primary shoulder of the female joint is greater than or equal to the distance from the sealing surface of the primary shoulder of the male joint to the secondary shoulder of the male joint.
The taper of the joint threads is smaller than that of API conventional weighted drill pipe joint threads.
The taper of the thread of the integral weighted drill rod joint is 1: 8.
The utility model has the advantages that: the utility model discloses bear torsional strength ability and improve more than 25%, bear interior pressure ability and improve more than 30%, upward detain efficiency and improve more than 40%.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. the male joint main shoulder sealing surface 2, the female joint main shoulder sealing surface 3, the lubricating sections D, 4, the internal thread section 5, the female joint 6, the lubricating sections C, 7, the female joint auxiliary shoulder 8, the male joint auxiliary shoulder 9, the lubricating sections B, 10, the external thread section 11, the male joint 12 and the lubricating section A.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
An integrally-weighted drill pipe joint thread comprises a male joint main shoulder sealing surface 1, a female joint main shoulder sealing surface 2, a lubricating section, an internal thread section 4, a female joint 5, a female joint auxiliary shoulder 7, a male joint auxiliary shoulder 8, an external thread section 10 and a male joint 11, wherein the male joint 11 is provided with the external thread section 10, two ends of the external thread section 10 are a lubricating section A12 and a lubricating section B9, one end of the lubricating section B9 far away from the external thread section 10 is the male joint auxiliary shoulder 8, and one end of the lubricating section A12 far away from the external thread section 10 is the male joint main shoulder sealing surface 1; the female joint 5 is provided with an internal thread section 4, the two ends of the internal thread section 4 are a lubricating section C6 and a lubricating section D3, one end of the lubricating section C6 far away from the internal thread section 4 is a female joint auxiliary shoulder 7, the female joint auxiliary shoulder 7 is matched with a male joint auxiliary shoulder 8, one end of the lubricating section D3 far away from the internal thread section 4 is a female joint main shoulder sealing surface 2, and the female joint main shoulder sealing surface 2 is matched with the male joint main shoulder sealing surface 1; the difference between the distance from the female joint auxiliary shoulder 7 to the female joint main shoulder sealing surface 2 and the distance from the male joint main shoulder sealing surface 1 to the male joint auxiliary shoulder 8 is 0-0.25 mm; the distance from the sealing surface 1 of the male connector main shoulder to the male connector auxiliary shoulder 8 is 12.7-25.4 mm longer than that of a male connector with the same outer diameter listed in an API standard.
And a gap is reserved between the lubricating section A12 and the lubricating section D3.
And a gap is reserved between the lubricating section B9 and the lubricating section C6.
The distance from the female joint secondary shoulder 7 to the female joint primary shoulder sealing surface 2 is greater than or equal to the distance from the male joint primary shoulder sealing surface 1 to the male joint secondary shoulder 8.
The taper of the joint threads is smaller than that of API conventional weighted drill pipe joint threads.
The taper of the thread of the integral weighted drill rod joint is 1: 8.
The tooth profile height of the joint thread is increased compared with that of an API thread, the thread length of an external thread section 10 is longer than that of the API thread, the thread taper is smaller than that of the API thread, the torsional strength and tensile load of the joint thread are improved, and compared with an API conventional thread, the torsional strength is improved by about 50% -70%. When the tool is used, the male joint main shoulder sealing surface 1 and the female joint main shoulder sealing surface 2 are firstly contacted, the torque for screwing is born by the external shoulder surfaces of the external thread and the internal thread, the male joint auxiliary shoulder 8 and the female joint auxiliary shoulder 7 are not contacted, and the gap between the male joint auxiliary shoulder 8 and the female joint auxiliary shoulder 7 is 0-0.25 mm; when the screwing torque continues to increase, the sealing surface 1 of the main shoulder of the male joint and the sealing surface 2 of the main shoulder of the female joint start interference, the threads also start interference, the screwing torque is born by the external thread section 10 and the internal thread section 4, the auxiliary shoulder 8 of the male joint and the auxiliary shoulder 7 of the female joint start to contact with each other along with the continuous increase of the screwing torque, a part of the torque is born, and the joint threads reach the designed screwing torque.
Claims (6)
1. The utility model provides an wholly aggravate drilling rod joint screw thread, includes male joint owner circular bead sealed surface (1), female joint owner circular bead sealed surface (2), lubricated section, internal thread section (4), female joint (5), the vice circular bead of female joint (7), the vice circular bead of male joint (8), external screw thread section (10) and male joint (11), its characterized in that: an external thread section (10) is arranged on the male joint (11), a lubricating section A (12) and a lubricating section B (9) are arranged at two ends of the external thread section (10), one end, far away from the lubricating section B (9) of the external thread section (10), of the lubricating section B is a male joint auxiliary shoulder (8), and one end, far away from the lubricating section A (12) of the external thread section (10), of the lubricating section A (12) is a male joint main shoulder sealing surface (1); an internal thread section (4) is arranged on the female joint (5), a lubricating section C (6) and a lubricating section D (3) are arranged at two ends of the internal thread section (4), a female joint auxiliary shoulder (7) is arranged at one end of the lubricating section C (6) far away from the internal thread section (4), the female joint auxiliary shoulder (7) is matched with a male joint auxiliary shoulder (8), a female joint main shoulder sealing surface (2) is arranged at one end of the lubricating section D (3) far away from the internal thread section (4), and the female joint main shoulder sealing surface (2) is matched with the male joint main shoulder sealing surface (1); the difference between the distance from the female joint auxiliary shoulder (7) to the female joint main shoulder sealing surface (2) and the distance from the male joint main shoulder sealing surface (1) to the male joint auxiliary shoulder (8) is 0-0.25 mm; the distance from the sealing surface (1) of the main shoulder of the male joint to the auxiliary shoulder (8) of the male joint is 12.7-25.4 mm longer than that of the male joint with the same outer diameter listed in the API standard.
2. An integrally weighted drill pipe joint thread as recited in claim 1, wherein: and a gap is reserved between the lubricating section A (12) and the lubricating section D (3).
3. An integrally weighted drill pipe joint thread as recited in claim 1, wherein: and a gap is reserved between the lubricating section B (9) and the lubricating section C (6).
4. An integrally weighted drill pipe joint thread as recited in claim 1, wherein: the distance from the female joint secondary shoulder (7) to the female joint main shoulder sealing surface (2) is greater than or equal to the distance from the male joint main shoulder sealing surface (1) to the male joint secondary shoulder (8).
5. An integrally weighted drill pipe joint thread as recited in claim 1, wherein: the taper of the joint threads is smaller than that of API conventional weighted drill pipe joint threads.
6. An integrally weighted drill pipe joint thread according to claim 1 or 5, wherein: the taper of the thread of the integral weighted drill rod joint is 1: 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022421539.8U CN212130418U (en) | 2020-10-28 | 2020-10-28 | Integrally-weighted drill rod joint thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022421539.8U CN212130418U (en) | 2020-10-28 | 2020-10-28 | Integrally-weighted drill rod joint thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212130418U true CN212130418U (en) | 2020-12-11 |
Family
ID=73685420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022421539.8U Active CN212130418U (en) | 2020-10-28 | 2020-10-28 | Integrally-weighted drill rod joint thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212130418U (en) |
-
2020
- 2020-10-28 CN CN202022421539.8U patent/CN212130418U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of integral weighted drill pipe joint thread Effective date of registration: 20230330 Granted publication date: 20201211 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Weima Equipment Technology Co.,Ltd. Registration number: Y2023980036780 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201211 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Weima Equipment Technology Co.,Ltd. Registration number: Y2023980036780 |