CN203796186U - Improved two-shoulder oil drill pipe joint - Google Patents
Improved two-shoulder oil drill pipe joint Download PDFInfo
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- CN203796186U CN203796186U CN201320891619.7U CN201320891619U CN203796186U CN 203796186 U CN203796186 U CN 203796186U CN 201320891619 U CN201320891619 U CN 201320891619U CN 203796186 U CN203796186 U CN 203796186U
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- joint
- shoulder
- length
- slave station
- female joint
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
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Abstract
The utility model provides an improved two-shoulder oil drill pipe joint. The improved two-shoulder oil drill pipe joint is used for solving the problems that an existing drill pipe joint is low in torsional strength and cannot meet the requirement for continuous increase of the drilling depth, internal threads of the existing drill pipe joint are prone to swelling, or/and threads of an external thread joint are prone to fracture. The improved two-shoulder oil drill pipe joint comprises a male joint body and a female joint body. The outer peripheral surface of an inserting-connecting segment is provided with external threads. The inner peripheral surface of a sleeving-connecting segment is provided with internal threads. The root of the external threads on the male joint body is provided with a male joint primary shoulder. The outer end of the external threads on the male joint body is provided with a male joint secondary shoulder. The root of the internal threads on the female joint is provided with a female joint secondary shoulder. The outer end of the internal threads on the female joint is provided with a female joint primary shoulder. The distance between the female joint secondary shoulder and the male joint secondary shoulder is longer than the distance between the female joint primary shoulder and the male joint primary shoulder. The improved two-shoulder oil drill pipe joint can be applied to the field of drilling equipment.
Description
Technical field
The utility model relates to oil drilling field, especially a kind of tool joint.
Background technology
The current tool joint of using in the drilling process of Oil/gas Well, the general API standard production manufacture of American Petroleum Institute (API) (API) formulation and the two shoulder drilling rod of corresponding A PI Design of Screw Thread of adopting more.Torsional strength is tool joint and the drill pipe body important indicator while matching than index, is the ratio that the torsional strength of joined tool joint accounts for drill pipe body torsional strength, and the antitorque ratio of general API drilling rod and two bead drill pipes is greater than 0.8.Along with the continuous increase of drilling depth, more and more require the torsional strength of tool joint further to improve, to avoid occurring, tool joint internal thread swells or and the failure accidents of male connection screw thread fracture.
Utility model content
The purpose of this utility model is to provide the two shoulder joint of petroleum drill rod of a kind of modified, lower to solve the torsional strength of existing tool joint, can not meet the ever-increasing needs of drilling depth, easily occur that tool joint internal thread swells or and the problem of the failure accidents of male connection screw thread fracture.
For achieving the above object, the utility model by the following technical solutions, the two shoulder joint of petroleum drill rod of modified, comprise male joint and female joint, one end of described male joint is provided with the inserting section that is positioned at described female joint, one end of described female joint is provided with the socket section being enclosed within outside described inserting section, the outer peripheral face of the inserting section of described male joint is provided with external screw thread, the inner peripheral surface of the socket section of described female joint is provided with the internal thread coordinating with described external screw thread, in described male joint, externally threaded root is provided with the main shoulder of male joint, in described male joint, externally threaded outer end is provided with male joint slave station shoulder, in described female joint, the root of internal thread is provided with female joint slave station shoulder, in described female joint, the outer end of internal thread is provided with the main shoulder of female joint, between the main shoulder of described male joint and described externally threaded root, be provided with the main shoulder external cylindrical surface of male joint, between described male joint slave station shoulder and described externally threaded outer end, be provided with male joint slave station shoulder external cylindrical surface, between the main shoulder of described female joint and the outer end of described internal thread, be provided with the main shoulder inner cylinder face of female joint, between described female joint slave station shoulder and the root of described internal thread, be provided with female joint slave station shoulder inner cylinder face, the distance that described female joint slave station is takeed between described male joint slave station shoulder is greater than the main shoulder of described female joint to the distance between the main shoulder of described male joint.
Concrete, described internal thread and externally threaded tooth form are trapezoidal, described external screw thread and described internal thread tolerance fit, and described externally threaded tooth depth tolerance is 0-0.03mm, the tooth depth tolerance of described internal thread is 0-0.03mm.
Concrete, described internal thread and externally threaded thread taper are 1:6, described internal thread and described externally threaded pitch are 4 teeth/in.
Concrete, it is 0-0.3mm to the difference of distance between the main shoulder of described male joint that described female joint slave station is takeed on distance between described male joint slave station shoulder and the main shoulder of described female joint.
Concrete, described externally threaded length equals externally threaded length in corresponding API tool joint, and the length of described internal thread equals the length of internal thread in corresponding API tool joint, and the tolerance of described external thread length is ± 0.05mm.
Concrete, the length that described male joint slave station is takeed on external cylindrical surface axis direction is 2-6 times that in corresponding API tool joint, male joint slave station is takeed on external cylindrical surface axis direction length, and the length of described female joint slave station shoulder inner cylinder face axis direction is 2-6 times that in API tool joint, female joint slave station is takeed on inner cylinder face axis direction length.
Concrete, the length of described inserting section is greater than the length of inserting section in corresponding API tool joint, and the length of described socket section is greater than the length of socket section in corresponding API tool joint.
Concrete, the length of described inserting section be the length of inserting section in corresponding API tool joint 2-3 doubly, the length of described socket section be the length of socket section in corresponding API tool joint 2-3 doubly.
The two shoulder joint of petroleum drill rod of a kind of modified that the utility model embodiment provides, there is higher torsional strength, compare with unidimensional corresponding API tool joint, torsional strength improves 40% left and right, met the day by day harsh drilling condition of drilling process of super dark oil well or gas well, well solve low, the efficient not problem of existing API tool joint torsional strength, there is good application space.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of male joint in the utility model embodiment;
Fig. 2 is the structural representation of female joint in the utility model embodiment;
Fig. 3 is the confined state schematic diagram of male joint and female joint in the utility model embodiment;
Fig. 4 is the structural representation that in the utility model embodiment, external screw thread is trapezoidal tooth form.
The specific embodiment
The torsional strength of existing tool joint is lower, can not meet the ever-increasing needs of drilling depth, easily occurs that tool joint internal thread swells or and the failure accidents of male connection screw thread fracture.The utility model embodiment provides a kind of modified two shoulder joint of petroleum drill rod.
As Fig. 1, shown in Fig. 2 and Fig. 3, the two shoulder joint of petroleum drill rod of modified, comprise male joint 1 and female joint 2, one end of described male joint is provided with the inserting section 13 that is positioned at described female joint 2, one end of described female joint 2 is provided with the socket section 14 being enclosed within outside described inserting section 13, the outer peripheral face of the inserting section 13 of described male joint is provided with external screw thread 3, the inner peripheral surface of the socket section 14 of described female joint 2 is provided with the internal thread 4 coordinating with described external screw thread 3, in described male joint 1, the root of external screw thread 3 is provided with the main shoulder 5 of male joint, in described male joint 1, the outer end of external screw thread 3 is provided with male joint slave station shoulder 6, in described female joint 2, the root of internal thread 4 is provided with female joint slave station shoulder 7, in described female joint 2, the outer end of internal thread 4 is provided with the main shoulder 8 of female joint, between the main shoulder 5 of described male joint and the root of described external screw thread 3, be provided with the main shoulder external cylindrical surface 9 of male joint, between described male joint slave station shoulder 6 and the outer end of described external screw thread 3, be provided with male joint slave station shoulder external cylindrical surface 10, between the main shoulder 8 of described female joint and the outer end of described internal thread 4, be provided with the main shoulder inner cylinder face 11 of female joint, between described female joint slave station shoulder 7 and the root of described internal thread 4, be provided with female joint slave station shoulder inner cylinder face 12, described female joint slave station shoulder 7 is greater than the main shoulder 8 of described female joint to the distance between the main shoulder 5 of described male joint to the distance between described male joint slave station shoulder 6.
As shown in Figure 4, in specific implementation process, the tooth form of described internal thread and external screw thread 3 can be for trapezoidal, described external screw thread 3 and described internal thread tolerance fit, the tooth depth tolerance of described external screw thread 3 is 0-0.03mm, the tooth depth tolerance of described internal thread is 0-0.03mm, and described internal thread and externally threaded tooth form are trapezoidal, after internal thread and external screw thread screw, can reach the sealing effectiveness better than circular arc.Described internal thread and externally threaded thread taper are 1:6, and described internal thread and described externally threaded pitch are 4 teeth/in.
It is 0-0.3mm to the difference of distance between the main shoulder 5 of described male joint that described female joint slave station shoulder 7 is takeed on distance between 6 and the main shoulder 8 of described female joint to described male joint slave station.
Described male joint and described female joint be take the API tool joint that meets API standard and are basis: the length of described external screw thread 3 equals externally threaded length in corresponding API tool joint, and the tolerance of described external thread length is ± 0.05mm.
Described male joint 1 and described female joint 2 be take the API tool joint that meets API standard and are basis: the 2-6 of the length of described male joint slave station shoulder external cylindrical surface 10 axis directions male joint slave station shoulder external cylindrical surface axis direction length in corresponding API tool joint doubly, the length of described female joint slave station shoulder inner cylinder face 12 axis directions be female joint slave station shoulder inner cylinder face axis direction length in API tool joint 2-6 doubly.
Described male joint and described female joint 2 be take the API tool joint that meets API standard and are basis: the length of described inserting section 13 is greater than the length of inserting section in corresponding API tool joint, and the length of described socket section 14 is greater than the length of socket section in corresponding API tool joint.
In specific implementation process, described male joint 1 and described female joint 2 be take the API tool joint that meets API standard and are basis: the 2-3 of the length of described inserting section 13 length of inserting section in corresponding API tool joint doubly, the length of described socket section 14 be the length of socket section in corresponding API tool joint 2-3 doubly.
There is higher torsional strength, compare with unidimensional corresponding API tool joint, torsional strength improves 40% left and right, met the day by day harsh drilling condition of drilling process of super dark oil well or gas well, well solve low, the efficient not problem of existing API tool joint tool joint torsional strength, there is good application space.
Comprise the above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (8)
1. two shoulder joint of petroleum drill rod of modified, it is characterized in that: comprise male joint and female joint, one end of described male joint is provided with the inserting section that is positioned at described female joint, one end of described female joint is provided with the socket section being enclosed within outside described inserting section, the outer peripheral face of the inserting section of described male joint is provided with external screw thread, the inner peripheral surface of the socket section of described female joint is provided with the internal thread coordinating with described external screw thread, in described male joint, externally threaded root is provided with the main shoulder of male joint, in described male joint, externally threaded outer end is provided with male joint slave station shoulder, in described female joint, the root of internal thread is provided with female joint slave station shoulder, in described female joint, the outer end of internal thread is provided with the main shoulder of female joint, between the main shoulder of described male joint and described externally threaded root, be provided with the main shoulder external cylindrical surface of male joint, between described male joint slave station shoulder and described externally threaded outer end, be provided with male joint slave station shoulder external cylindrical surface, between the main shoulder of described female joint and the outer end of described internal thread, be provided with the main shoulder inner cylinder face of female joint, between described female joint slave station shoulder and the root of described internal thread, be provided with female joint slave station shoulder inner cylinder face, the distance that described female joint slave station is takeed between described male joint slave station shoulder is greater than the main shoulder of described female joint to the distance between the main shoulder of described male joint.
2. two shoulder joint of petroleum drill rod of modified as claimed in claim 1, it is characterized in that: described internal thread and externally threaded tooth form are trapezoidal, described external screw thread and described internal thread tolerance fit, described externally threaded tooth depth tolerance is 0-0.03mm, and the tooth depth tolerance of described internal thread is 0-0.03mm.
3. the two shoulder joint of petroleum drill rod of modified as claimed in claim 2, is characterized in that: described internal thread and externally threaded thread taper are 1:6, and described internal thread and described externally threaded pitch are 4 teeth/in.
4. two shoulder joint of petroleum drill rod of modified as claimed in claim 1, is characterized in that: it is 0-0.3mm to the difference of distance between the main shoulder of described male joint that described female joint slave station is takeed on distance between described male joint slave station shoulder and the main shoulder of described female joint.
5. the two shoulder joint of petroleum drill rod of modified as claimed in claim 1, is characterized in that: described externally threaded length equals externally threaded length in corresponding API tool joint, and the tolerance of described external thread length is ± 0.05mm.
6. two shoulder joint of petroleum drill rod of modified as claimed in claim 5, it is characterized in that: the length that described male joint slave station is takeed on external cylindrical surface axis direction is 2-6 times that in corresponding API tool joint, male joint slave station is takeed on external cylindrical surface axis direction length, the length of described female joint slave station shoulder inner cylinder face axis direction is 2-6 times that in API tool joint, female joint slave station is takeed on inner cylinder face axis direction length.
7. the two shoulder joint of petroleum drill rod of modified as claimed in claim 6, is characterized in that: the length of described inserting section is greater than the length of inserting section in corresponding API tool joint, and the length of described socket section is greater than the length of socket section in corresponding API tool joint.
8. two shoulder joint of petroleum drill rod of modified as claimed in claim 7, it is characterized in that: the length of described inserting section be the length of inserting section in corresponding API tool joint 2-3 doubly, the length of described socket section be the length of socket section in corresponding API tool joint 2-3 doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891619.7U CN203796186U (en) | 2013-12-31 | 2013-12-31 | Improved two-shoulder oil drill pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891619.7U CN203796186U (en) | 2013-12-31 | 2013-12-31 | Improved two-shoulder oil drill pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796186U true CN203796186U (en) | 2014-08-27 |
Family
ID=51378407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891619.7U Expired - Fee Related CN203796186U (en) | 2013-12-31 | 2013-12-31 | Improved two-shoulder oil drill pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796186U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041232A (en) * | 2015-09-01 | 2015-11-11 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Cylindrical surface sealing thread structure for petroleum drilling tool |
| CN106014281A (en) * | 2016-07-13 | 2016-10-12 | 江阴德玛斯特钻具有限公司 | Highly anti-torque drill rod |
-
2013
- 2013-12-31 CN CN201320891619.7U patent/CN203796186U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041232A (en) * | 2015-09-01 | 2015-11-11 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Cylindrical surface sealing thread structure for petroleum drilling tool |
| CN106014281A (en) * | 2016-07-13 | 2016-10-12 | 江阴德玛斯特钻具有限公司 | Highly anti-torque drill rod |
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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: 20140827 Termination date: 20211231 |