CN216767305U

CN216767305U - Lifting short joint

Info

Publication number: CN216767305U
Application number: CN202122487280.1U
Authority: CN
Inventors: 于洋
Original assignee: Mudanjiang Construction Material Petroleum Machinery Co ltd
Current assignee: Mudanjiang Construction Material Petroleum Machinery Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-06-17
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a lifting nipple, which comprises a body, wherein one end of the body is provided with a lifting end, the inner wall of the lifting end is provided with an installation cavity, the interior of the installation cavity is in threaded connection with a lifting connecting end through an internal thread of the inner wall, the inner side wall surface of the lifting end is provided with a slot, the inner side wall surface of the slot is in threaded connection with an insert, one side of the insert extending out of the inner wall of the lifting end is clamped on the inner side wall surface of the lifting connecting end, during installation, threaded connection is fixed with the lifting end through the lifting connecting end, the lifting connecting end is secondarily fixed through the installation of the insert, the strength of the connecting part is enhanced through the insert which is bidirectionally and symmetrically installed or the insert which is bidirectionally and symmetrically installed, tensile force is shared from the threaded connecting part, the probability of thread connection tripping is reduced, and the service life of the threaded connecting part is prolonged.

Description

Lifting short joint

Technical Field

The utility model relates to the technical field of downhole drilling tools, in particular to a lifting short section.

Background

The tool lifting sub is a tool used to lift the lower drill string during tripping of the oil well. The drilling tool lifting short section only actually lifts a lower drill string in the using process, the stress condition is not harsh, but multiple drilling tool lifting short section failure accidents happen in oil fields in China, two structural types are arranged at the lifting end of the lifting short section, namely an internal thread structure is arranged in the lifting short section or the internal thread structure is not arranged in the lifting short section, and due to the fact that the connecting strength of the screw joint of the lifting short section is too high in the using process of the lifting short section, the load borne by the lifting short section on the drilling tool is too large, and tripping accidents happen.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a lifting nipple, which comprises a body, wherein one end of the body is provided with a lifting end, the inner wall of the lifting end is provided with an installation cavity, the inside of the installation cavity is in threaded connection with the lifting connecting end through the inner thread of the inner wall, a slot is formed in the inner side wall surface of the lifting end, an insert is screwed on the inner side wall surface of the slot, and one side of the insert extending out of the inner wall of the lifting end is clamped on the inner side wall surface of the lifting connecting end.

Preferably, a shoulder is arranged on one side of the body close to the lifting end.

Preferably, the outer side wall surface of the plug-in component is fixedly connected with a clamping ring, and an elastic component is clamped between the clamping ring and the slot.

Preferably, the outer side wall surface of the plug-in is provided with a connecting thread, one end of the plug-in, which is far away from the connecting thread, is provided with an installing head, and the inner side wall surface of the installing head is provided with a clamping groove.

Preferably, the number of the slots and the inner wall bolt connection plug-in units is at least two, and the slots and the inner wall bolt connection plug-in units are arranged at equal intervals along the axial direction of the body.

Preferably, the outer wall of the lifting connecting end is matched with the plug-in unit to be provided with a jack.

The utility model has the following beneficial effects: during the installation, carry out the spiro union of screw through promoting link and promotion end and fix, and then will promote the link through the installation plug-in components and carry out the secondary and fix, through the plug-in components of two-way symmetry installation, or the intensity of junction is strengthened to the plug-in components of multidirectional symmetry installation, shares the tensile force from threaded connection, reduces the probability that the spiro union was tripped, the live time of extension threaded connection department.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view at A;

in the figure: 1. body, 11, promotion end, 12, installation cavity, 13, internal thread, 14, slot, 2, promotion link, 3, plug-in components, 31, snap ring, 32, elastomeric element, 33, connecting thread, 34, installation head, 35, draw-in groove, 4, circular bead, 5, jack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1-2, a lifting pipe nipple, which comprises a body 1, wherein one end of the body 1 is provided with a lifting end 11, the inner wall of the lifting end 11 is provided with a mounting cavity 12, the inside of the mounting cavity 12 is in threaded connection with a lifting connecting end 2 through an inner thread 13 of the inner wall, a slot 14 is formed in the inner side wall surface of the lifting end 11, a plug-in unit 3 is screwed on the inner side wall surface of the slot 14, the plug-in unit 3 extends out of one side of the inner wall of the lifting end 11 and is clamped on the inner side wall surface of the lifting connecting end 2, the lifting connecting end 2 and the lifting end 11 are in threaded connection through the inner thread 13, after the connection is completed, the plug-in unit 3 is placed inside the slot 14, the plug-in unit 3 and the slot 14 are in threaded connection and rotation by using a tool, until one end of the plug-in unit 3 is inserted into the outer side of the lifting connecting end 2, and the connection position is reinforced.

Specifically, the body 1 is provided with a shoulder 4 on one side close to the lifting end 11, and the shoulder 4 is arranged to facilitate the fixed installation of the lifting nipple.

Specifically, the outer side wall surface of the plug-in 3 is fixedly connected with the clamping ring 31, the elastic part 32 is clamped between the clamping ring 31 and the slot 14, and after the plug-in 3 is screwed and fixed, the plug-in 3 is stably clamped with the clamping ring 31 through the elastic part 32 under the elastic action of the elastic part 32 all the time.

Specifically, connecting thread 33 has been seted up to the outside wall of plug-in components 3, and plug-in components 3 keep away from connecting thread 33 one end and be equipped with installation head 34, and the inside wall face of installation head 34 is equipped with draw-in groove 35, and the design of draw-in groove 35 can match current instrument and use, through the joint of instrument with draw-in groove 35 for plug-in components 3 can rotate, so that install or dismantle.

Specifically, the number of the slots 14 and the inner wall bolt joint inserts 3 is at least two, the slots 14 and the inner wall bolt joint inserts 3 are arranged at equal intervals along the axial direction of the body 1, and the symmetrical arrangement facilitates the installation of the inserts 3, so that the fixed connection part is stressed uniformly.

Particularly, promote outer wall cooperation plug-in components 3 of link 2 and seted up jack 5, jack 5 quantity is the same with the quantity that plug-in components 3 and slot 14 were established, carries out the assorted joint promptly, and jack 5 is interference fit with slot 14, leaves the allowance for processing.

Example (b): carry out threaded connection through internal thread 13 with promotion end 2 and promotion end 11, after the connection is accomplished, place plug-in components 3 inside slot 14, utilize the instrument to carry out the spiro union with plug-in components 3 and slot 14 and rotate, insert the outside that promotes connection end 2 until 3 one end of plug-in components, consolidate the junction, the circular bead 4 that is equipped with is for the fixed mounting who promotes the nipple joint, carry out the spiro union with plug-in components 3 and fix the back, under elastomeric element 32's elastic action, make plug-in components 3 pass through elastomeric element 32 and snap ring 31's joint, stabilize all the time in its joint state.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a promote nipple joint, a serial communication port, includes body (1), body (1) one end is equipped with promotes end (11), the inner wall that promotes end (11) is equipped with installation cavity (12), internal thread (13) and promotion link (2) threaded connection through the inner wall are inside in installation cavity (12), slot (14) have been seted up to the inside wall face that promotes end (11), the inside wall face spiro union of slot (14) has plug-in components (3), plug-in components (3) stretch out and promote end (11) inner wall one side joint in promoting link (2) inside wall face.

2. A lifting sub according to claim 1, characterized in that the body (1) is provided with a shoulder (4) on the side near the lifting end (11).

3. The lifting sub according to claim 1, characterized in that a snap ring (31) is fixedly connected to the outer side wall surface of the insert (3), and an elastic component (32) is clamped between the snap ring (31) and the slot (14).

4. The lifting sub according to claim 3, characterized in that the outer side wall surface of the plug (3) is provided with a connecting thread (33), one end of the plug (3) away from the connecting thread (33) is provided with a mounting head (34), and the inner side wall surface of the mounting head (34) is provided with a clamping groove (35).

5. A lifting sub according to claim 4, characterized in that the number of the slots (14) and the inner wall threaded inserts (3) is at least two, and the slots (14) and the inner wall threaded inserts (3) are arranged equidistantly along the axial direction of the body (1).

6. A lifting sub according to claim 5, characterised in that the outer wall of the lifting connection end (2) is provided with a socket (5) for the mating insert (3).