CN218150790U

CN218150790U - Anti-tripping screen pipe coupling

Info

Publication number: CN218150790U
Application number: CN202222392265.3U
Authority: CN
Inventors: 周亚鸿
Original assignee: Dongying Jingchi Petroleum Technology Co ltd
Current assignee: Dongying Jingchi Petroleum Technology Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-27
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to the field of oil and gas exploitation, and discloses an anti-tripping screen pipe coupling, which comprises a screen pipe coupling body; a first strengthening ring is fixed around the front part of the sieve tube coupling body provided with the internal thread, and a second strengthening ring is fixed around the rear part of the sieve tube coupling body provided with the internal thread; the first reinforcing ring is provided with a plurality of pins for connecting the front part of the screen pipe coupling body and the front screen pipe base pipe, and the second reinforcing ring is provided with a plurality of pins for connecting the rear part of the screen pipe coupling body and the rear screen pipe base pipe; and a rubber sleeve is fixed around the middle part of the sieve tube coupling body without the internal thread. The utility model ensures the strength of the coupling by arranging the strengthening ring, and avoids the expansion buckle condition; pins are reasonably arranged, so that the connection firmness is ensured; the rubber sleeve is reasonably arranged, so that the smooth appearance of the coupling is ensured, and the friction resistance is reduced; the anti-drop cap is omitted, and the structure is simplified; convenient operation and easy popularization.

Description

Anti-tripping screen pipe coupling

Technical Field

The utility model relates to an oil gas exploitation field, concretely relates to screen pipe coupling is detained to anticreep.

Background

At present, well completion pipe strings in oil wells, gas wells and water injection wells, particularly screen pipes in horizontal well completion pipe strings are in a free state in a shaft, no well cement is arranged outside the screen pipes, and the screen pipes are easily buried by sand setting in unconsolidated strata. When the operation pipe column is rotated when a new well is put into production, the screen pipe in a free state in a well bore can be given a tripping torque, and if impact and rotation happen simultaneously, screen pipe loosening is aggravated. After the sieve tube is released, the normal production of part of the sieve tube or the whole sieve tube section can be caused, and huge economic loss is caused for oil and gas exploitation. The currently used anti-tripping screen pipe coupling can reduce the strength of the coupling and cause the expansion-tripping condition due to the turning of threads on the end part of the coupling; the wall thickness of the thread on the anti-falling cap is small, so that the anti-falling cap is easy to deform and affects on-site screwing.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a good effect anti-tripping screen pipe coupling.

The technical scheme is as follows: the sieve tube coupling comprises a sieve tube coupling body, wherein the front part of the sieve tube coupling body is meshed with the external thread of a front sieve tube base tube through the internal thread, the rear part of the sieve tube coupling body is meshed with the external thread of a rear sieve tube base tube through the internal thread, and the inner diameter of the middle part of the sieve tube coupling body without the internal thread is the same as the inner diameters of the front sieve tube base tube and the rear sieve tube base tube; a first strengthening ring is fixed around the front part of the sieve tube coupling body provided with the internal thread, and a second strengthening ring is fixed around the rear part of the sieve tube coupling body provided with the internal thread; the thicknesses of the first strengthening ring and the second strengthening ring are the same; the width of the first strengthening ring is the same as the width of the front part of the sieve tube coupling body, and the width of the second strengthening ring is the same as the width of the rear part of the sieve tube coupling body; the first strengthening ring is provided with a plurality of pins for connecting the front part of the screen pipe coupling body and the front screen pipe base pipe, and the second strengthening ring is provided with a plurality of pins for connecting the rear part of the screen pipe coupling body and the rear screen pipe base pipe; a rubber sleeve is fixed around the middle part of the sieve tube coupling body which is not provided with the internal thread; the thickness of the rubber sleeve is the same as that of the first reinforcing ring and the second reinforcing ring; the width of the rubber sleeve is the same as the width of the middle part of the sieve tube coupling body.

2 or 4 pins are uniformly arranged on the first strengthening ring.

2 or 4 pins are uniformly arranged on the second strengthening ring.

The pin comprises a tip at the front part, a cylinder at the middle part and a cross groove at the rear part; the pointed end is conical; the cylinder is provided with external threads.

The thickness of the first strengthening ring and the second strengthening ring is not less than half of the wall thickness of the screen pipe coupling body.

The first strengthening ring and the second strengthening ring are made of stainless steel.

The rubber sleeve is made of butadiene rubber.

The first strengthening ring, the second strengthening ring and the sieve tube coupling body are welded; the rubber sleeve and the sieve tube coupling body are bonded.

Compared with the prior art, the utility model discloses mainly have following beneficial technological effect:

1. the strength of the coupling is ensured by arranging the reinforcing ring, and the expansion buckle condition is avoided.

2. The pins are reasonably arranged, and the connection firmness is ensured.

3. The rubber sleeve is reasonably arranged, so that the smooth appearance of the coupling is ensured, and the friction resistance is reduced.

4. The anti-drop cap is omitted, and the structure is simplified.

5. Convenient operation and easy popularization.

Drawings

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

in the figure: the screen pipe comprises a front screen pipe base pipe, 2-a first strengthening ring, 3-a rubber sleeve, 4-a second strengthening ring, 5-a rear screen pipe base pipe, 6-a screen pipe coupling body, 7-a pin, 8-a pointed end, 9-a cylinder and 10-a cross groove.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

Example 1

See fig. 1. An anti-tripping screen pipe coupling comprises a screen pipe coupling body 6, wherein the front part of the screen pipe coupling body 6 is meshed with the external thread of a front screen pipe base pipe 1 through the internal thread, the rear part of the screen pipe coupling body 6 is meshed with the external thread of a rear screen pipe base pipe 5 through the internal thread, and the inner diameter of the middle part of the screen pipe coupling body 6 without the internal thread is the same as the inner diameters of the front screen pipe base pipe 1 and the rear screen pipe base pipe 5; a first strengthening ring 2 is fixed around the front part of the sieve tube coupling body 6 provided with the internal thread, and a second strengthening ring 4 is fixed around the rear part of the sieve tube coupling body 6 provided with the internal thread; the thicknesses of the first strengthening ring 2 and the second strengthening ring 4 are the same; the width of the first strengthening ring 2 is the same as the width of the front part of the screen pipe coupling body 6, and the width of the second strengthening ring 4 is the same as the width of the rear part of the screen pipe coupling body 6; a plurality of pins 7 are arranged on the first strengthening ring 2 and connected with the front part of the screen pipe coupling body 6 and the front screen pipe base pipe 1, and a plurality of pins 7 are arranged on the second strengthening ring 4 and connected with the rear part of the screen pipe coupling body 6 and the rear screen pipe base pipe 5; the rubber sleeve 3 is fixed around the middle part of the sieve tube coupling body 6 without the internal thread; the thickness of the rubber sleeve 3 is the same as that of the first strengthening ring 2 and the second strengthening ring 4; the width of the rubber sleeve 3 is the same as the width of the middle part of the screen pipe coupling body 6.

Example 2

See fig. 1. On the basis of the technical scheme recorded in

embodiment

1, 2 buckling-preventing screen pipe couplings are uniformly arranged on a first strengthening ring 2 and a second strengthening ring 4 respectively, and are exactly symmetrical, which is the most basic arrangement; if the underground situation is complicated, 4 pins 7 can be uniformly arranged on the first strengthening ring 2 and the second strengthening ring 4 respectively for the sake of safety, and the pins are just distributed symmetrically in a cross shape, so that the fastening force is balanced.

Example 3

See fig. 1. On the basis of the technical scheme recorded in embodiment 1, a pin 7 comprises a pointed end 8 at the front part, a cylinder 9 at the middle part and a cross groove 10 at the rear part; the tip 8 is conical, so that the advancing resistance is small; the column 9 is provided with external threads to enhance the fastening force; the cross recess 10 facilitates the use of tools.

Example 4

See fig. 1. On the basis of the technical scheme recorded in embodiment 1, the thickness of each of a first strengthening ring 2 and a second strengthening ring 4 is not less than half of the body wall thickness of a screen pipe coupling body 6, so that high strength is achieved.

Example 5

See fig. 1. On the basis of the technical scheme recorded in embodiment 1, the first strengthening ring 2 and the second strengthening ring 4 are made of stainless steel, so that the strength is ensured, and the anti-buckling screen pipe joint can be rustproof; the rubber sleeve 3 is made of butadiene rubber with particularly excellent elasticity and wear resistance.

Example 6

See fig. 1. On the basis of the technical scheme recorded in the embodiment 1, a first strengthening ring 2, a second strengthening ring 4 and a screen pipe coupling body 6 are welded; the rubber sleeve 3 and the screen pipe coupling body 6 are bonded.

The basic working principle of the utility model is as follows:

during operation, the screen pipe coupling body 6 is respectively in threaded connection with the front screen pipe base pipe 1 and the rear screen pipe base pipe 5, so that the front screen pipe base pipe 1 and the rear screen pipe base pipe 5 are close to two ends of the lower side of the middle part of the screen pipe coupling body 6, which is not provided with internal threads; then, pins 7 are respectively arranged on the first strengthening ring 2 and the second strengthening ring 4, so that the tips 8 are lowered into the front screen base pipe 1 and the rear screen base pipe 5 without penetrating through the pipe walls, and the cross grooves 10 are sunk into the first strengthening ring 2 and the second strengthening ring 4. Through the reasonable arrangement of the first strengthening ring 2, the second strengthening ring 4 and the pin 7, the strength and the connection firmness of the coupling are ensured. The reasonable arrangement of the rubber sleeve 3 ensures that the coupling has smooth appearance, reduces the frictional resistance of the coupling in the underground movement process, and improves the construction efficiency.

Claims

1. The utility model provides an anticreep is buckled screen pipe coupling, includes the screen pipe coupling body, the anterior external screw thread meshing through its internal thread and preceding screen pipe parent tube of screen pipe coupling body, the external screw thread meshing of screen pipe base tube after through its internal thread, the screen pipe coupling body does not establish the internal screw thread middle part internal diameter and the internal diameter of preceding screen pipe parent tube and back screen pipe parent tube the same, its characterized in that: a first strengthening ring is fixed around the front part of the sieve tube coupling body provided with the internal thread, and a second strengthening ring is fixed around the rear part of the sieve tube coupling body provided with the internal thread; the thicknesses of the first strengthening ring and the second strengthening ring are the same; the width of the first strengthening ring is the same as the width of the front part of the sieve tube coupling body, and the width of the second strengthening ring is the same as the width of the rear part of the sieve tube coupling body; the first reinforcing ring is provided with a plurality of pins for connecting the front part of the screen pipe coupling body and the front screen pipe base pipe, and the second reinforcing ring is provided with a plurality of pins for connecting the rear part of the screen pipe coupling body and the rear screen pipe base pipe; a rubber sleeve is fixed around the middle part of the sieve tube coupling body which is not provided with the internal thread; the thickness of the rubber sleeve is the same as that of the first reinforcing ring and the second reinforcing ring; the width of the rubber sleeve is the same as the width of the middle part of the screen pipe coupling body.

2. The anti-tripping screen joint coupling of claim 1, wherein: 2 or 4 pins are uniformly arranged on the first strengthening ring.

3. The anti-tripping screen pipe joint as claimed in claim 1, wherein: 2 or 4 pins are uniformly arranged on the second strengthening ring.

4. The anti-tripping screen pipe joint as claimed in claim 1, wherein: the pin comprises a tip at the front part, a cylinder at the middle part and a cross groove at the rear part; the pointed end is conical; the cylinder is provided with external threads.

5. The anti-tripping screen pipe joint as claimed in claim 1, wherein: the thickness of the first strengthening ring and the second strengthening ring is not less than half of the wall thickness of the screen pipe coupling body.

6. The anti-tripping screen pipe joint as claimed in claim 1, wherein: the first strengthening ring and the second strengthening ring are made of stainless steel.

7. The anti-tripping screen pipe joint as claimed in claim 1, wherein: the rubber sleeve is made of butadiene rubber.

8. The anti-tripping screen pipe joint as claimed in claim 1, wherein: the first strengthening ring, the second strengthening ring and the sieve tube coupling body are welded; the rubber sleeve and the sieve tube coupling body are bonded.