Sleeve anti-abrasion device

Abstract

The utility model relates to a casing pipe anti-abrasion device which comprises a casing pipe, a casing pipe anti-abrasion ring, a welding clamping sleeve, a first tight fit clamping hoop and a second tight fit clamping hoop, the first tight fit clamping hoop and the second tight fit clamping hoop which are detachable are arranged at the two ends of the casing pipe respectively, and the casing pipe anti-abrasion ring and the welding clamping sleeve are inserted in the middle of the casing pipe in a penetrating mode. The casing pipe anti-abrasion ring is made of hard alloy materials, the casing pipe anti-abrasion ring is in sliding fit with the casing pipe, friction between the casing pipes can be effectively prevented, abrasion of the casing pipes is reduced, the overall service life of the casing pipe anti-abrasion ring is prolonged, and the second tight fit clamp, the casing pipe, the first tight fit clamp and the casing pipe are connected in a sliding fit mode. The welding clamping sleeve matching part and the welding clamping sleeve matching part are in close fit, the sleeve can be fixed in the middle of the sleeve, the sleeve is prevented from being excessively abraded, the welding clamping sleeve is welded to the welding clamping sleeve matching part, and the sleeve anti-abrasion ring is tightly fixed to the sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling casing protection, in particular to a casing anti-wear device. Background Art

[0002] In deep and ultra-deep well drilling operations, due to the long drilling cycle, the drill rod rotates for a long time in the casing, causing serious wear on the casing. For the same reason, in large-displacement drilling operations, due to the influence of the parallel angle, the drill rod wears the casing, which brings hidden dangers to oil field production and later operations. At present, the commonly used technology is to use a rubber drill rod hoop to protect the casing, but because the material of this technology is rubber, it has poor high temperature resistance and wear performance, is easy to age and fall off, and causes other operational problems, it has been gradually eliminated. For this reason, we propose a casing anti-wear device. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a casing anti-wear device to solve the above-mentioned problems.

[0005] (II) Technical solution

[0006] 1. To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sleeve anti-wear device, comprising a sleeve, a sleeve anti-wear ring, a welding sleeve, a tight-fitting clamp 1 and a tight-fitting clamp 2, the two ends of the sleeve are respectively equipped with a detachable tight-fitting clamp 1 and a tight-fitting clamp 2, and the middle part of the sleeve is interspersed with a sleeve anti-wear ring and a welding sleeve.

[0007] Preferably, a truncated cone-shaped drill string fitting portion is provided on the inner wall of the casing, and a welding ferrule fitting portion and a tight-fitting clamp mounting portion are respectively provided on the outer side of the casing, and a welding ferrule and a tight-fitting clamp are respectively installed at the positions of the welding ferrule fitting portion and the tight-fitting clamp mounting portion.

[0008] Preferably, a casing anti-wear ring matching portion and a casing anti-wear ring limiting portion are provided on the outer side of the middle portion of the casing, and a casing anti-wear ring is installed at the position of the casing anti-wear ring matching portion.

[0009] Preferably, the lower part of the casing is provided with a drill string matching part with a circular drill hole, and the outer side of the casing is provided with a corresponding casing anti-wear ring limiting part and the area between the drill string matching part is provided with a tight-fit clamp mounting part 2, and a tight-fit clamp 2 is installed at the position of the tight-fit clamp mounting part 2.

[0010] Preferably, the tight-fitting clamp 1 and the tight-fitting clamp 2 both include a tight-fitting clamp left portion and a tight-fitting clamp right portion, and one end of the tight-fitting clamp left portion and the tight-fitting clamp right portion are hinged through a fixing stud 1 to form an open-and-close circular ring structure.

[0011] Preferably, a rectangular hole is provided at the hinge of the fixing stud one corresponding to the right part of the tight-fitting clamp, and a reserved movable part is integrally formed at the hinge of the fixing stud one corresponding to the left part of the tight-fitting clamp, and multiple groups of fixing studs two are interspersed at the closed part of the left part of the tight-fitting clamp and the right part of the tight-fitting clamp, and the end of the fixing stud two is threadedly connected to a nut.

[0012] Preferably, the sleeve anti-wear ring comprises a sleeve anti-wear ring limiting fitting part and a sleeve fitting part, a plurality of sets of sleeve fitting parts are equidistantly and integrally formed on the outer wall surface of the sleeve anti-wear ring limiting fitting part, and the gap between two adjacent sleeve fitting parts forms an anti-wear ring drainage groove.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a casing anti-wear device, which has the following beneficial effects:

[0015] 1. The sleeve anti-wear device uses a sleeve designed in a special shape, and a sleeve anti-wear ring with a drainage groove is installed above the sleeve anti-wear ring limiter, wherein the tight-fit clamp 2, the tight-fit clamp 1, the welding ferrule, and the sleeve anti-wear ring are all designed with drainage grooves, which effectively prevents the device from being blocked by liquid and affecting its use during use.

[0016] 2. The sleeve anti-wear device, the sleeve anti-wear ring is made of cemented carbide, and the connection method with the sleeve is a sliding fit, which can effectively prevent the friction between the sleeves, reduce the wear of the sleeve, and increase its overall life.

[0017] 3. The sleeve anti-wear device is tightly matched with the second clamp and the sleeve, and tightly matched with the first clamp and the sleeve. The sleeve can be fixed in the middle of the sleeve to prevent excessive wear of the sleeve. The welding sleeve is welded to the welding sleeve matching part to tightly fix the sleeve anti-wear ring on the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main wear modes of the shaft sleeve of the utility model during use;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model;

[0020] Figure 3 This is a cross-sectional view of the structure of the utility model;

[0021] Figure 4 This is a front view of the structure of the utility model;

[0022] Figure 5 This is a cross-sectional view of the casing structure of the utility model;

[0023] Figure 6This is a schematic diagram of the structure of the casing anti-wear ring of the utility model;

[0024] Figure 7 It is a schematic diagram of the tight-fitting clamp structure of the utility model.

[0025] In the figure: 1-wear area; 2-crescent cross wear; 3-crescent separation wear; 4-crescent overlap wear; 5-drill string; 6-casing; 7-casing anti-wear ring; 8-welding ferrule; 9-tight fitting clamp one; 10-tight fitting clamp two; 11-drill string matching part upper; 12-drill string matching part lower; 13-casing magic matching part; 14-welding ferrule matching part; 15-casing anti-wear ring limiting part; 16-tight fitting clamp installation part one; 17-tight fitting clamp installation part two; 18-casing matching part; 19-casing anti-wear ring limiting matching part; 20-anti-wear ring drain groove; 21-tight fitting clamp left part; 22-fixing stud one; 23-tight fitting clamp right part; 24-nut; 25 fixing stud two; 26-installation reserved movable part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7 A sleeve anti-wear device comprises a sleeve 6, a sleeve anti-wear ring 7, a welding sleeve 8, a tight-fitting clamp 1 9 and a tight-fitting clamp 2 10. Removable tight-fitting clamp 1 9 and tight-fitting clamp 2 10 are respectively installed at both ends of the sleeve 6, and a sleeve anti-wear ring 7 and a welding sleeve 8 are inserted in the middle part of the sleeve 6.

[0028] A truncated cone-shaped drill string fitting portion 11 is provided on the inner wall of the casing 6, and a welding ferrule fitting portion 14 and a tight-fitting clamp mounting portion 16 are respectively provided on the outer side of the casing 6. A welding ferrule 8 and a tight-fitting clamp 9 are respectively installed at the positions of the welding ferrule fitting portion 14 and the tight-fitting clamp mounting portion 16.

[0029] A casing anti-wear ring matching portion 13 and a casing anti-wear ring limiting portion 15 are provided on the outer side of the middle portion of the casing 6 , and a casing anti-wear ring 7 is installed at the position of the casing anti-wear ring matching portion 13 .

[0030] The lower part of the casing 6 is provided with a drill string matching part 12 with a circular drill hole, and the outer side of the casing 6 is provided with a corresponding casing anti-wear ring limiting part 15. The area between the lower drill string matching part 12 is provided with a tight-fitting clamp mounting part 17, and the tight-fitting clamp mounting part 17 is installed at the position of the tight-fitting clamp mounting part 17.

[0031] The tight-fitting clamp 1 9 and the tight-fitting clamp 2 10 both include a tight-fitting clamp left portion 21 and a tight-fitting clamp right portion 23. One end of the tight-fitting clamp left portion 21 and the tight-fitting clamp right portion 23 are hinged through a fixing stud 1 22 to form an open-and-close circular ring structure.

[0032] A rectangular hole is provided at the hinge of the fixing stud 22 corresponding to the right part 23 of the tight-fitting clamp, and a reserved movable part 26 is integrally formed at the hinge of the fixing stud 22 corresponding to the left part 21 of the tight-fitting clamp, and a plurality of groups of fixing studs 25 are inserted at the closed part of the left part 21 of the tight-fitting clamp and the right part 23 of the tight-fitting clamp, and the end of the fixing stud 25 is threadedly connected to the nut 24.

[0033] The sleeve anti-wear ring 7 comprises a sleeve anti-wear ring limiting fitting portion 19 and a sleeve fitting portion 18. A plurality of sleeve fitting portions 18 are integrally formed on the outer wall surface of the sleeve anti-wear ring limiting fitting portion 19 at equal intervals, and the gap between two adjacent sleeve fitting portions 18 forms an anti-wear ring drainage groove 20.

[0034] A drill string 5 is inserted into the interior of the casing 6, wherein the wear area 1 is the wear area generated during use. The sleeve has the following main wear modes during use: crescent cross wear 2; crescent separation wear 3; crescent overlap wear 4.

[0035] Working principle: By using a specially designed sleeve, a sleeve anti-wear ring with a drainage groove is installed above the sleeve anti-wear ring limiter, wherein the tight-fit clamp 2, the tight-fit clamp 1, the welding clamp, and the sleeve anti-wear ring are all designed with drainage grooves, which effectively prevents the device from being blocked by liquid during use; the sleeve anti-wear ring is made of cemented carbide and is connected to the sleeve in a sliding fit, which can effectively prevent the friction between the sleeves, reduce the wear of the sleeve, and increase its overall life; the tight-fit clamp 2, the sleeve, the tight-fit clamp 1, and the sleeve are tightly matched, and the sleeve can be fixed in the middle of the sleeve to prevent excessive wear of the sleeve. The welding clamp is welded to the welding clamp fitting part to tightly fix the sleeve anti-wear ring on the sleeve.

[0036] 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 variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sleeve anti-wear device, comprising a sleeve (6), a sleeve anti-wear ring (7), a welding sleeve (8), a tight-fitting clamp first (9) and a tight-fitting clamp second (10), characterized in that: The two ends of the sleeve (6) are respectively provided with a detachable tight-fitting clamp 1 (9) and a tight-fitting clamp 2 (10), and the middle part of the sleeve (6) is interspersed with a sleeve anti-wear ring (7) and a welding sleeve (8).

2. A casing anti-wear device according to claim 1, characterized in that: A truncated cone-shaped drill column fitting portion (11) is provided on the inner wall of the casing (6), and a welding sleeve fitting portion (14) and a tight-fitting clamp mounting portion (16) are respectively provided on the outer side of the casing (6), and a welding sleeve (8) and a tight-fitting clamp (9) are respectively installed at the positions of the welding sleeve fitting portion (14) and the tight-fitting clamp mounting portion (16).

3. A casing anti-wear device according to claim 2, characterized in that: A sleeve anti-wear ring matching portion (13) and a sleeve anti-wear ring limiting portion (15) are provided on the outer side of the middle portion of the sleeve (6), and a sleeve anti-wear ring (7) is installed at the position of the sleeve anti-wear ring matching portion (13).

4. A casing anti-wear device according to claim 3, characterized in that: The lower part of the casing (6) is provided with a drill string matching part (12) with a circular drill hole, and the outer side of the casing (6) is provided with a corresponding casing anti-wear ring limiting part (15) and a tight-fitting clamp mounting part (17) in the area between the lower drill string matching part (12), and the tight-fitting clamp mounting part (10) is installed at the position of the tight-fitting clamp mounting part (17).

5. The casing anti-wear device according to claim 1, characterized in that: The tight-fitting clamp 1 (9) and the tight-fitting clamp 2 (10) both comprise a tight-fitting clamp left portion (21) and a tight-fitting clamp right portion (23). One end of the tight-fitting clamp left portion (21) and the tight-fitting clamp right portion (23) are hinged via a fixing stud 1 (22) to form an open-and-close circular ring structure.

6. A casing anti-wear device according to claim 5, characterized in that: A rectangular hole is provided at a hinged position of the right part (23) of the tight-fitting clamp corresponding to the first fixing stud (22); a reserved movable portion (26) for installation is integrally formed at a hinged position of the left part (21) of the tight-fitting clamp corresponding to the first fixing stud (22); a plurality of sets of second fixing studs (25) are inserted at the closed position of the left part (21) of the tight-fitting clamp and the right part (23) of the tight-fitting clamp, and the ends of the second fixing studs (25) are threadedly connected to nuts (24).

7. The casing anti-wear device according to claim 1, characterized in that: The sleeve anti-wear ring (7) comprises a sleeve anti-wear ring limiting fitting portion (19) and a sleeve fitting portion (18); a plurality of sets of sleeve fitting portions (18) are integrally formed at equal intervals on the outer wall surface of the sleeve anti-wear ring limiting fitting portion (19); and a gap between two adjacent sleeve fitting portions (18) forms an anti-wear ring drain groove (20).

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