CN219119198U - Cutter arm type sleeve grinding shoe - Google Patents

Abstract

The utility model discloses a cutter arm type sleeve grinding shoe which comprises a joint and a carcass, wherein the carcass is arranged at one end of the joint, a guide rod is fixed at one end of the carcass, which is far away from the joint, a plurality of alloy teeth are deposited at one end of the guide rod, which is far away from the carcass, a plurality of cutter arms are arranged at one end of the carcass, which is far away from the joint, and the cutter arms are uniformly distributed around the guide rod in a circumferential manner. Through the cutter arm type structure, the problem that the milling efficiency is low due to the fact that the contact area of the bottom of the mill shoe and the fish is constant all the time under the condition of constant limiting weight on bit is achieved, the stress is even is avoided, the utilization rate of the cutting part of the mill shoe is improved, the number of times of starting and tripping is reduced, the construction period is shortened, and the operation cost is saved.

Description

Cutter arm type sleeve grinding shoe

Technical Field

The utility model relates to the technical field of drilling accident treatment, in particular to a cutter arm type sleeve grinding shoe.

Background

In the major repair operation of oil, gas and water wells and the treatment process of drilling accidents, the problems of sleeve repair, sleeve taking, sleeve clamping and the like are frequently encountered; as is known, milling operations are indistinguishable from tool selection, with different purposes having different tool selections; the prior art mainly comprises the following aspects: firstly, the construction of milling the side drilling of the window of the sleeve section mainly adopts a section milling device, firstly cuts the sleeve, and then grinds the sleeve to a preset well depth. Secondly, milling shoes and milling, wherein the working conditions are mainly applied to underground casing accidents, and conventional flat bottom milling shoes, blade milling shoes, particle tooth milling shoes and the like are adopted for milling operation in the past, but the tooth utilization rate is low, the contact surface is rapidly increased along with abrasion, and the drilling pressure of the conventional drilling tool assembly cannot meet the construction conditions; in addition, the high-efficiency grinding shoe is a blade grinding shoe, but the machine speed is high, the total feed is low, and the aging is not high in the large-section sleeve grinding shoe operation. Therefore, how to design an efficient milling tool for efficient milling of large-section thick-wall casings in such drilling accidents becomes a focus in accident handling.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a cutter arm type sleeve grinding shoe which is used for solving the problems in the background art.

The aim of the utility model is realized by the following technical scheme: the utility model provides a tool arm formula sleeve pipe mill shoes, includes connects and matrix, the one end that connects is provided with the matrix, the matrix is kept away from the one end that connects is fixed with the guide bar, the guide bar is kept away from the one end build-up welding of matrix has a plurality of alloy teeth, the matrix is kept away from the one end that connects is provided with a plurality of tool arms, a plurality of the tool arm round the guide bar is circumference equipartition.

The effect of adopting above-mentioned technical scheme is, through the cutter arm formula structure, has realized under invariable restriction weight on bit condition, and mill shoe bottom and fish area of contact are invariable all the time, and the atress is even to avoid conventional mill shoe contact surface to change and lead to the problem that milling efficiency is low, improve mill shoe cutting part utilization ratio, and then reduce the number of times of taking off and going on, shorten construction cycle, practice thrift the operation cost.

Further, the cutter arm is in a cuboid shape and comprises a back plate and an alloy composite sheet, the back plate is fixedly connected with the tire body and the guide rod, and one side surface of the back plate is fixedly provided with the alloy composite sheet.

Further, the side wall of the carcass is provided with a junk slot in the main cutting direction of the cutter arm.

Further, the guide rod is provided with a water hole in a penetrating mode along the axis direction of the guide rod.

Further, the end of the joint remote from the carcass is machined with a standard API drill button.

Further, the joint, the carcass and the guide rod are integrally cast.

The beneficial effects of the utility model are as follows:

through the cutter arm type structure, the problem that the milling efficiency is low due to the fact that the contact area of the bottom of the mill shoe and the fish is constant all the time under the condition of constant limiting weight on bit is achieved, the stress is even is avoided, the utilization rate of the cutting part of the mill shoe is improved, the number of times of starting and tripping is reduced, the construction period is shortened, and the operation cost is saved.

Drawings

FIG. 1 is a schematic view of the overall structure of a tool arm type bushing shoe of the present utility model;

in the figure, the structure comprises a 1-joint, a 2-matrix, a 3-guide rod, a 4-cutter arm, 5-alloy teeth, a 6-backboard, a 7-alloy composite sheet and an 8-chip groove.

Detailed Description

The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.

As shown in figure 1, the cutter arm type sleeve grinding shoe comprises a joint 1 and a carcass 2, wherein the carcass 2 is arranged at one end of the joint 1, a guide rod 3 is fixed at one end of the carcass 2 away from the joint 1, a plurality of alloy teeth 5 are deposited at one end of the guide rod 3 away from the carcass 2, the guide rod 3 is mainly used for guiding and righting in the drilling and grinding process, the alloy teeth 5 deposited at the bottom of the guide rod are used for cleaning the accumulated matters in the ground and milled fish, a plurality of cutter arms 4 are arranged at one end of the carcass 2 away from the joint 1, the cutter arms 4 are uniformly distributed around the guide rod 3 in a circumference, the cutter arms 4 are cuboid, each cutter arm 4 comprises a back plate 6 and an alloy composite sheet 7, the back plate 6 is fixedly connected with the carcass 2 and the guide rod 3, an alloy composite sheet 7 is fixed on one side surface of the back plate 6, the back plate 6 plays a supporting role and is used for welding the alloy composite sheet 7 with a cutting role, so that the size of a milling surface of the cutter arm 4 is regular, the stress is constant, the change of a contact surface is avoided in the drilling and grinding process, the purpose of maintaining a constant drilling speed is achieved, the contact area between the bottom of a mill shoe and a fish is always constant under the condition of constant limiting drilling pressure through a cutter arm structure, the stress is uniform, the problem of low milling efficiency caused by the change of the contact surface of a conventional mill shoe is avoided, the utilization rate of the cutting part of the mill shoe is improved, the number of times of drilling and the construction period are reduced, and the operation cost is saved; in specific implementation, the cutter arm 3 is connected with the matrix 2 and the guide rod 3 in a mosaic and welding mode, so that the strength of the cutter arm is ensured, and the constant cutting force can be maintained under the condition of limiting the weight on bit.

Further, a chip groove 8 is formed in the side wall of the carcass 2 in the main cutting direction of the cutter arm 3, and is used for flushing scrap iron generated after upward cutting in time.

Further, the guide rod 3 is provided with a water hole penetrating along the axial direction of the guide rod, and during operation, drilling fluid returns from the bottom, so that the whole tool and drill grinding dust are washed and carried.

Further, the end of the joint 1 remote from the carcass 2 is machined with a standard API drill button to facilitate the installation of the tool arm shoe on the drill via the joint 1.

Further, the joint 1, the carcass 2 and the guide rod 3 are integrally cast and formed, so that the production is facilitated, and meanwhile, the strength of the grinding shoe is improved.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (6)

1. The utility model provides a tool arm formula sleeve pipe mill shoes, includes connects (1) and matrix (2), the one end that connects (1) is provided with matrix (2), its characterized in that, matrix (2) are kept away from the one end that connects (1) is fixed with guide bar (3), guide bar (3) are kept away from the one end build-up welding of matrix (2) has a plurality of alloy teeth (5), matrix (2) are kept away from the one end that connects (1) is provided with a plurality of tool arms (4), a plurality of tool arms (4) round guide bar (3) are circumference equipartition.

2. The cutter arm type sleeve grinding shoe according to claim 1, wherein the cutter arm (4) is cuboid in shape, the cutter arm (4) comprises a back plate (6) and an alloy composite sheet (7), the back plate (6) is fixedly connected with the carcass (2) and the guide rod (3), and one side surface of the back plate (6) is fixedly provided with the alloy composite sheet (7).

3. A tool arm type casing shoe according to claim 2, characterized in that the side wall of the carcass (2) is provided with junk slots (8) in the main cutting direction of the tool arm (4).

4. The tool arm type sleeve grinding shoe according to claim 1, wherein the guide rod (3) is provided with a water hole penetrating along the axis direction of the guide rod.

5. A tool arm casing shoe according to claim 1, characterized in that the end of the joint (1) remote from the carcass (2) is machined with a standard API drill button.

6. A tool arm type casing grinding shoe according to any one of claims 1-5, characterized in that the joint (1), the carcass (2) and the guiding rod (3) are cast integrally.

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