CN217001752U

CN217001752U - Plugging pipe for oil well casing leak repairing

Info

Publication number: CN217001752U
Application number: CN202220660820.3U
Authority: CN
Inventors: 张韬; 袁杰; 田雨; 项邵亮; 孙玉龙; 崔汝东; 崔玉磊
Original assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co Shengli Oil Extraction Plant
Current assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co Shengli Oil Extraction Plant
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-19
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to the technical field of plugging pipe sticking, and discloses a plugging pipe for oil well casing pipe leakage repairing, which comprises a plugging pipe sticking body, wherein two end parts of the plugging pipe sticking body are respectively provided with a limiting ring, two end parts of the plugging pipe sticking body are respectively provided with two screw holes, two bolts are respectively in threaded connection inside the two limiting rings, the two limiting rings are in threaded connection with the plugging pipe sticking body through four bolts, and the inner walls of the two limiting rings are respectively fixed with a first sealing ring. According to the utility model, the sliding blocks are made of rubber, the two sliding blocks deform when pulled, the clamping block is pulled out, cement is poured into the first limiting groove through the first through groove, the two first limiting grooves are poured and sealed, and cement leakage is prevented.

Description

Plugging pipe for oil well casing leak repairing

Technical Field

The utility model relates to the technical field of sticking and plugging pipes, in particular to a sticking and plugging pipe for leak repairing of an oil well casing.

Background

Oil well pipes, also known as petroleum dedicated pipes, are the foundation of the petroleum industry, and casing, tubing and drill string components (drill rods, drill collars, kelly, etc.) are collectively referred to as oil well pipes (OCTG). The oil well pipe is often subjected to combined action of corrosive medium and alternating load (bending and vibration) under the service working condition, and serious corrosion fatigue damage can occur.

The Chinese patent discloses: a casing plugging tube, patent application No.: 202120497831.X, this patent "the middle fixed mounting of the stifled pipe body that pastes has the support chunk shell, the inboard one end of supporting the chunk shell is equipped with the side end recess, the one end fixed mounting of side end recess has the high-pressure chunk, the one end fixed mounting of high-pressure chunk has the drift, the inboard upper end of supporting the chunk shell is equipped with the upper groove, the inboard lower extreme of supporting the chunk shell is equipped with the low groove, the one end fixed mounting of upper groove has the upper spring, the one end fixed mounting of upper spring has the top shoe, the one end fixed mounting of top shoe has the upper limit stop, the one end fixed mounting of low groove has the lower spring, the one end fixed mounting of lower spring has the lower slider, the one end fixed mounting of lower slider has the lower limit stop.

However, when the device is used, the inside of the sticking and blocking pipe is not convenient to limit, so that a large amount of cement needs to be poured, the phenomenon of material waste is caused, and therefore the sticking and blocking pipe for oil well casing leakage repairing is provided.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problems existing in the prior art and provides a plugging pipe for leak repairing of an oil well casing.

In order to achieve the purpose, the utility model adopts the following technical scheme that the plugging pipe for oil well casing pipe leakage repair comprises a plugging pipe body, wherein two end parts of the plugging pipe body are respectively provided with a limiting ring, two end parts of the plugging pipe body are respectively provided with two screw holes, two bolts are respectively in threaded connection with the inner parts of the two limiting rings, the two limiting rings are in threaded connection with the plugging pipe body through four bolts, first sealing rings are respectively fixed on the inner walls of the two limiting rings, two first limiting grooves are respectively formed in the inner walls of the plugging pipe body, penetrating first penetrating grooves are respectively formed in the inner walls of the two first limiting grooves, and clamping blocks are respectively arranged on the inner walls of the two first penetrating grooves in a sliding manner.

Preferably, two slide blocks which are symmetrically distributed are fixed at the outer ends of the two clamping blocks, and the outer ends of the four slide blocks are located on the inner wall of the sliding groove to slide.

Preferably, the outer end of each sliding block is provided with a chamfer.

Preferably, the two end parts of the inner wall of the sticking pipe body are both fixed with second sealing rings.

Preferably, the first sealing rings are wedge-shaped, and the inner walls of two opposite ends of the two first sealing rings are wider and the inner walls of two opposite ends of the two first sealing rings are narrower.

Preferably, the slider is made of elastic rubber.

Advantageous effects

The utility model provides a sticking and blocking pipe for leak repairing of an oil well casing. The method has the following beneficial effects:

(1) the plugging pipe for leak repairing of the oil well casing pipe moves the two limiting rings towards the plugging pipe body, the bolt is rotated to lead the limit ring to be screwed with the sticking pipe body, the first sealing ring plays a role in sealing, the two sliding blocks are positioned on the inner walls of the two sliding grooves to slide by pulling the clamping blocks, the chamfers of the two sliding blocks are limited, and the sliding blocks are made of rubber, when the sliding blocks are pulled, the two sliding blocks deform, the clamping blocks are pulled out, cement is poured into the first limiting grooves through the first through grooves, so that the inner parts of the two first limiting grooves are poured and sealed, the cement is prevented from leaking, by adopting the mode, the material quantity of cement pouring is reduced, the leakage phenomenon of the cement is prevented, after the pouring is finished, make cement seal through closing the fixture block lid, traditional equipment relatively, this equipment easy operation is convenient, and reduces the cement quantity, the cost is reduced.

(2) This oil well casing pipe mending leakage is with pasting stifled pipe, through second sealing washer and first sealing washer messenger paste stifled pipe body and oil well pipe between cup joint sealed effect, and through the wedge design of first sealing washer, when first sealing washer cup joints the oil well pipe, first sealing washer deformation makes to wrap up between first sealing washer and the oil well pipe inseparabler, has guaranteed the stability of pasting stifled pipe body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

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

FIG. 2 is a schematic view of a second seal ring according to the present invention;

FIG. 3 is a schematic view of a stop collar according to the present invention.

Illustration of the drawings: 11. sticking a plugging pipe body; 12. a limiting ring; 13. a first seal ring; 14. a bolt; 15. a first limit groove; 16. a screw hole; 17. a first through groove; 18. a chute; 19. a clamping block; 20. a slider; 21. and a second seal ring.

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.

The first embodiment, an oil well casing is stifled pipe of subsides for mending leak, as shown in fig. 1 and fig. 2, including subsides stifled

pipe body

11, 11 two tip of subsides stifled pipe body all are provided with spacing ring 12, its characterized in that: two screw holes 16 are respectively arranged at two end parts of a plugging pipe body 11, two bolts 14 are respectively in threaded connection in two limiting rings 12, the two limiting rings 12 are in threaded connection with the plugging pipe body 11 through four bolts 14, first sealing rings 13 are respectively fixed on the inner walls of the two limiting rings 12, two first limiting grooves 15 are respectively arranged on the inner wall of the plugging pipe body 11, penetrating first through grooves 17 are respectively arranged on the inner walls of the two first limiting grooves 15, clamping blocks 19 are respectively arranged on the inner walls of the two first through grooves 17 in a sliding manner, two symmetrically distributed sliding blocks 20 are respectively fixed on the outer ends of the two clamping blocks 19, the outer ends of the four sliding blocks 20 are respectively arranged on the inner wall of a sliding groove 18 in a sliding manner, second sealing rings 21 are respectively fixed on the two end parts of the inner wall of the plugging pipe body 11, the clamping blocks 19 are opened, cement is poured into the first limiting grooves 15, the second sealing rings 21 and the first sealing rings 13 have a sealing effect, and cement and oil leakage is prevented, after pouring is finished, the clamping block 19 is covered, so that a large amount of cement materials are saved, and the phenomenon of material waste is prevented;

in the second embodiment, as shown in fig. 2, a chamfer is formed at the outer end of each sliding block 20, the sliding blocks 20 are made of elastic rubber, the installation and the disassembly of the fixture blocks 19 are facilitated by the formation of the chamfers, and the rubber material of the sliding blocks 20 plays a role in water prevention, so that the quality of cement is ensured;

in the third embodiment, as shown in fig. 3, the first seal rings 13 are wedge-shaped, and the inner walls of the two opposite ends of the two first seal rings 13 are wider and the inner walls of the two opposite ends of the two first seal rings 13 are narrower, so that the wedge-shaped first seal rings 13 play a role in further wrapping the oil well pipe, thereby preventing the oil well pipe from leaking and further preventing oil from leaking.

The working principle of the utility model is as follows:

the first step is as follows: the two limiting rings 12 are moved towards the direction of the sticking pipe body 11, the limiting rings 12 are screwed with the sticking pipe body 11 by rotating the bolts 14, the first sealing ring 13 plays a role in sealing, the two sliding blocks 20 are positioned on the inner walls of the two sliding grooves 18 to slide by pulling the clamping blocks 19, at the moment, the chamfers of the two sliding blocks 20 are limited, and the sliding blocks 20 are made of rubber, when the sliding blocks 20 are pulled, the two sliding blocks 20 deform, the clamping blocks 19 are pulled out, cement is poured into the first limiting grooves 15 through the first through grooves 17, so that the insides of the two first limiting grooves 15 are poured and sealed to prevent the cement from leaking, by adopting the mode, the material quantity of cement pouring is reduced, the leakage phenomenon of the cement is prevented, after the pouring is finished, make cement seal through closing 19 covers of fixture block, traditional equipment relatively, this equipment easy operation is convenient, and reduces the cement quantity, the cost is reduced.

The second step is that: through second sealing washer 21 and first sealing washer 13 messenger paste and cup joint sealed effect between stifled pipe body 11 and the oil well pipe, and through the wedge design of first sealing washer 13, when first sealing washer 13 cup joints the oil well pipe, first sealing washer 13 deformation makes and wraps up inseparabler between first sealing washer 13 and the oil well pipe, has guaranteed the stability of stifled pipe body 11 of subsides.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an oil well casing pipe mending leakage is with pasting stifled pipe, is including pasting stifled pipe body (11), paste two tip of stifled pipe body (11) and all be provided with spacing ring (12), its characterized in that: paste two screw (16) all seted up, two in two tip of stifled pipe body (11) spacing ring (12) inside equal threaded connection has two bolts (14), two spacing ring (12) through four bolts (14) and paste stifled pipe body (11) threaded connection, two spacing ring (12) inner wall all is fixed with first sealing washer (13), paste stifled pipe body (11) inner wall and seted up two first spacing grooves (15), two first wearing groove (17) that run through, two are all seted up to first spacing groove (15) inner wall first wearing groove (17) inner wall all slides there is fixture block (19).

2. The sticking pipe for leak repairing of an oil well casing according to claim 1, wherein: two slide blocks (20) which are symmetrically distributed are fixed at the outer ends of the two clamping blocks (19), and the outer ends of the four slide blocks (20) are located on the inner wall of the sliding groove (18) to slide.

3. The sticking pipe for leak repairing of an oil well casing according to claim 2, wherein: each slide block (20) outer end is provided with a chamfer.

4. The sticking pipe for leak repairing of an oil well casing according to claim 1, wherein: and second sealing rings (21) are fixed at two end parts of the inner wall of the sticking and blocking pipe body (11).

5. The sticking pipe for leak repairing of an oil well casing according to claim 1, wherein: the first sealing rings (13) are wedge-shaped, and the inner walls of two opposite ends of the two first sealing rings (13) are wider, and the inner walls of two opposite ends of the two first sealing rings are narrower.

6. The sticking pipe for leak repairing of an oil well casing according to claim 2, wherein: the sliding block (20) is made of elastic rubber materials.