CN220726206U

CN220726206U - Well repair drill rod joint

Info

Publication number: CN220726206U
Application number: CN202322061079.6U
Authority: CN
Inventors: 杨鸿川; 盖广州; 李中莹; 杨龙
Original assignee: Xinjiang Yongsheng Nanyou Energy Co ltd
Current assignee: Xinjiang Yongsheng Nanyou Energy Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-04-05
Anticipated expiration: 2033-08-02

Abstract

The utility model relates to the technical field of well workover, in particular to a well workover drill rod joint, which comprises a rod body and a joint, wherein an external thread and a plurality of groups of locking pieces are arranged on the rod body; in practical application, the rod body is connected with the joint by screwing the internal thread and the external thread, and the loosening of the internal thread and the external thread after screwing can be effectively prevented by a plurality of groups of locking pieces on the rod body; the utility model can effectively prevent the connection part of the drill rod and the connector from loosening or falling off, and prolongs the service life of the well-repairing drill rod connector.

Description

Well repair drill rod joint

Technical Field

The utility model relates to the technical field of well repair, in particular to a well repair drill rod joint.

Background

Workover generally refers to maintenance work on water source wells, geothermal wells, oil wells, bittern wells and other tubular wells, and in recent years, drill pipes are often used for operation in workover along with social development except major repair work on oil and gas wells by petroleum operation teams.

Because the existing workover drill rod joint is mainly used for installing and connecting the drill rod and the joint in a threaded connection mode, the structure is too simple, the joint of the drill rod and the joint is very easy to loose or fall off in the long-time use process, and the service life of the workover drill rod joint is shortened.

Disclosure of Invention

The utility model aims to overcome the defects, and provides the well-repairing drill rod joint, which can effectively prevent the situation that the joint of a drill rod and the joint is loosened or falls off, and prolong the service life of the well-repairing drill rod joint.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a workover drilling rod joint, includes the body of rod and connects, be provided with external screw thread and multiunit retaining member on the body of rod, the one end of connecting is fixed with the adapter sleeve, be provided with on the inside wall of adapter sleeve with the internal screw thread of external screw thread looks adaptation, the retaining member is used for preventing that internal screw thread and external screw thread from loosening after screwing up.

Further, the locking pieces are provided with at least four groups, and the at least four groups of locking pieces are arranged at equal angles by taking the axle center of the rod body as the center.

Further, a plurality of locking holes are formed in the upper portion of the connecting sleeve, the locking holes correspond to the locking pieces one by one, the internal threads are arranged close to the middle portion of the connecting sleeve, and the connector is welded to the lower portion of the connecting sleeve.

Further, any group of locking pieces comprise blind holes radially formed in the rod body, plug blocks in the blind holes are connected in a sliding mode and used for connecting the plug blocks and springs at the bottom ends of the blind holes, plug inclined planes are arranged at the bottom ends of the plug blocks, and after the internal threads and the external threads are screwed, the blind holes are opposite to the locking holes.

Further, the top end of the connecting sleeve is provided with an abutting inclined plane.

The beneficial effects of the utility model are as follows:

in practical application, the rod body is connected with the joint by screwing the internal thread and the external thread, and the loosening of the internal thread and the external thread after screwing can be effectively prevented by a plurality of groups of locking pieces on the rod body; the utility model can effectively prevent the connection part of the drill rod and the connector from loosening or falling off, and prolongs the service life of the well-repairing drill rod connector.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

reference numerals: a rod body 1; a joint 2; a locking member 3; a blind hole 31; a plug block 32; a plugging ramp 321; a spring 33; a connecting sleeve 4; an internal thread 40; a locking hole 41; abutting the ramp 42.

Detailed Description

As shown in fig. 1, fig. 2 and fig. 3, a workover drill rod joint comprises a rod body 1 and a joint 2, wherein an external thread and a plurality of groups of locking pieces 3 are arranged on the rod body 1, a connecting sleeve 4 is fixed at one end of the joint 2, an internal thread 40 matched with the external thread is arranged on the inner side wall of the connecting sleeve 4, and the locking pieces 3 are used for preventing the internal thread 40 from loosening after being screwed up with the external thread.

In practical application, the rod body 1 is connected with the joint 2 by screwing the internal thread 40 and the external thread, and the loosening of the internal thread 40 and the external thread after screwing can be effectively prevented by the plurality of groups of locking pieces 3 on the rod body 1; the utility model can effectively prevent the connection part of the drill rod and the joint 2 from loosening or falling off, and prolongs the service life of the well repair drill rod joint.

As shown in fig. 1, 2 and 3, the locking pieces 3 are provided with at least four groups, and the at least four groups of locking pieces 3 are arranged at equal angles with the axle center of the rod body 1 as the center; in this embodiment, the four sets of locking members 3 disposed at equal angles with the axis of the rod body 1 as the center lock the screwed internal thread 40 with the external thread, so as to prevent the internal thread 40 and the external thread from loosening during the use of the workover drill rod joint.

As shown in fig. 1, 2 and 3, the upper part of the connecting sleeve 4 is provided with a plurality of locking holes 41, the locking holes 41 are in one-to-one correspondence with the locking pieces 3, the internal thread 40 is arranged near the middle part of the connecting sleeve 4, and the lower part of the connecting sleeve 4 is welded with the joint 2; in the embodiment, the internal thread 40 and the external thread after being screwed are locked through the locking hole 41 and the locking piece 3, so that the loosening is prevented; the middle part of the connecting sleeve 4 is in threaded connection with the external thread through an internal thread 40; the lower part of the connecting sleeve 4 is welded and fixed with the joint 2.

As shown in fig. 1, 2 and 3, any group of locking pieces 3 includes a blind hole 31 radially arranged on the rod body 1, a plug block 32 slidably connected in the blind hole 31, and a spring 33 for connecting the plug block 32 and the bottom end of the blind hole 31, wherein a plug inclined surface 321 is arranged at the bottom end of the plug block 32, and after the internal thread 40 and the external thread are screwed, the blind hole 31 is opposite to the locking hole 41; in this embodiment, during the process of inserting the connecting sleeve 4 into the rod body 1, the top end of the connecting sleeve 4 is abutted against the insertion inclined surface 321, the insertion block 32 is abutted back into the blind hole 31, the spring 33 is compressed, the blind hole 31 is opposite to the locking hole 41 after the internal thread 40 and the external thread are screwed up, and one end of the insertion block 32 is driven to extend out of the blind hole 31 and be inserted into the locking hole 41 by the restoring force of the spring 33

As shown in fig. 1, 2 and 3, the top end of the connecting sleeve 4 is provided with an abutting inclined surface 42; in this embodiment, in the process of inserting the connecting sleeve 4 into the rod body 1, the abutting inclined surface 42 is slidably abutted against the inserting inclined surface 321, the inserting block 32 is abutted back into the blind hole 31, meanwhile, the spring 33 is compressed, after the internal thread 40 and the external thread are screwed, the blind hole 31 is opposite to the locking hole 41, and one end of the inserting block 32 is driven to extend out of the blind hole 31 and be inserted into the locking hole 41 by the restoring force of the spring 33.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. A workover drill pipe joint, characterized in that: the novel connecting rod comprises a rod body (1) and a connector (2), wherein the rod body (1) is provided with external threads and a plurality of groups of locking pieces (3), one end of the connector (2) is fixedly provided with a connecting sleeve (4), the inner side wall of the connecting sleeve (4) is provided with internal threads (40) matched with the external threads, and the locking pieces (3) are used for preventing the internal threads (40) and the external threads from loosening after being screwed;

the locking pieces (3) are provided with at least four groups, and the at least four groups of locking pieces (3) are arranged at equal angles by taking the axle center of the rod body (1) as the center;

the upper part of the connecting sleeve (4) is provided with a plurality of locking holes (41), the locking holes (41) are in one-to-one correspondence with the locking pieces (3), the internal threads (40) are arranged close to the middle part of the connecting sleeve (4), and the lower part of the connecting sleeve (4) is welded with the joint (2);

any group of locking pieces (3) comprise blind holes (31) radially arranged on the rod body (1), plug blocks (32) slidably connected in the blind holes (31) and springs (33) used for connecting the plug blocks (32) with the bottom ends of the blind holes (31), plug inclined planes (321) are arranged at the bottom ends of the plug blocks (32), and after internal threads (40) are screwed with external threads, the blind holes (31) are opposite to the locking holes (41);

the top end of the connecting sleeve (4) is provided with an abutting inclined plane (42).