CN213597906U - Well entering tool connection auxiliary device - Google Patents

Abstract

The application discloses go into well instrument and connect auxiliary device includes: the device comprises a base, a fixing piece, a bearing seat, an elastic buffer device and a plurality of centralizing claws, wherein the fixing piece is positioned on the base; the fixing piece is provided with a cavity body which is communicated up and down, the inner wall of the cavity body is provided with a convex ring which protrudes inwards, the lower end of an elastic buffer device which is sleeved at the lower part of the bearing seat is propped against the upper end surface of the convex ring, and the lower part of the bearing seat is movably positioned in the cavity body; the fixing piece is also provided with a plurality of track grooves, and the lower parts of the plurality of righting claws are limited in the track grooves in a one-to-one correspondence manner and can move up and down along the track grooves; the middle part of the righting claw is connected with the upper part of the bearing seat, and the included angle between the extending direction of the righting claw and the horizontal plane is less than 90 degrees; the apparatus is configured such that, in use, the base is fixed at the wellhead, one end of the well entry tool is located on the upper end surface of the support block, and the plurality of centralizing jaws surround the circumference of the lower portion of the well entry tool. The tool can avoid the well entering tool from toppling during connection, and personal safety of operators is guaranteed.

Description

Well entering tool connection auxiliary device

Technical Field

The application relates to the technical field of oilfield operation tools, in particular to a well entering tool connection auxiliary device.

Background

Because the depth of the existing oil-gas-water well is usually more than kilometers underground, a plurality of oil pipes and a well entering tool need to be connected well at a wellhead and then are put into the well no matter during operation, oil testing, maintenance or overhaul.

In the related art, after the oil pipe or the kelly bar is lifted, the oil pipe or the kelly bar is connected or detached with a well entering tool at one side of a well mouth.

However, at present, when the oil pipe or the kelly bar and the well entering tool are connected or detached, the oil pipe or the kelly bar and the well entering tool are inclined at a certain angle rather than being perpendicular to the ground, and if the volume and the mass of the well entering tool are large, the well entering tool is prone to toppling, and personal safety of operators is threatened.

SUMMERY OF THE UTILITY MODEL

In view of this, this application provides a well entering tool connects auxiliary device, can utilize the well head to realize the fixed to well entering tool, has avoided falling into of well entering tool, has ensured operating personnel's personal safety.

Specifically, the method comprises the following technical scheme:

the embodiment of the application provides a well entry tool connects auxiliary device, the device includes: a base, a fixed part, a bearing seat, an elastic buffer device and a plurality of righting claws,

the fixing piece is fixed on the base;

the fixing piece is provided with a cavity communicated up and down, the inner wall of the cavity is provided with a convex ring protruding inwards, the lower end of the elastic buffer device sleeved at the lower part of the bearing seat abuts against the upper end face of the convex ring, and the lower part of the bearing seat is movably positioned in the cavity;

the fixing piece is also provided with a plurality of track grooves, and the lower parts of the plurality of righting claws are limited in the track grooves in a one-to-one correspondence manner and can move up and down along the track grooves;

the middle part of the righting claw is connected with the upper part of the bearing seat, and the included angle between the extending direction of the righting claw and the horizontal plane is less than 90 degrees;

the device is configured such that, in use, the base is fixed at the wellhead and an end of the well entry tool is located on the upper end surface of the support block, the plurality of centralizing jaws surrounding the circumference of the lower portion of the well entry tool.

In one possible design, the fixing piece is further provided with a plurality of limiting blocks, the lower part of the righting claw is positioned between two adjacent limiting blocks, and a cavity formed between the two adjacent limiting blocks belongs to a part of the groove cavity of the track groove;

each limiting block is provided with a fixing hole, the lower portion of the righting claw is provided with a through groove, and a track pin sequentially penetrates through the fixing hole of one limiting block between two adjacent limiting blocks, the through groove and the fixing hole of the other limiting block between two adjacent limiting blocks.

In one possible design, the fixing part is further provided with a plurality of limiting grooves, the limiting grooves correspond to the cavities formed between the two adjacent limiting blocks one by one, and the cavities formed between the groove cavities of the limiting grooves and the two adjacent limiting blocks form the groove cavities of the track grooves.

In one possible design, the supporting seat comprises a first part, a second part and a third part which are connected in sequence from top to bottom, wherein,

the first part is an inverted round table body, the second part and the third part are both cylinders, and the cross-sectional area of the second part is larger than that of the third part;

the upper end face of the first portion is suitable for supporting one end of the well entering tool, the elastic buffer device is sleeved on the third portion, and the upper end of the elastic buffer device abuts against the lower end face of the second portion.

In one possible design, the first portion has a plurality of fixation grooves in which the middle portions of the centering claws are located in a one-to-one correspondence;

the fixing device comprises a fixing groove, a fixing pin and a supporting rod, wherein the fixing groove is provided with a plurality of pin holes, the pin holes are formed in the groove walls of the two sides of the fixing groove, the middle part of the righting claw is provided with a connecting hole, and the fixing pin sequentially penetrates through the pin holes in the groove wall of one side of the fixing groove, the connecting hole and the pin holes in the groove wall of the.

In one possible design, the righting claw comprises a contact head, a connecting rod and a linkage part which are sequentially connected from top to bottom, wherein,

the contact head is in contact with the outer wall of the well entry tool;

the linkage portion is provided with the connecting hole and the through groove, and the through groove is an oval through groove.

In one possible design, the base comprises a first tube, a plate body and a second tube which are connected in sequence from top to bottom, wherein,

the cylinder cavity of the first pipe body is communicated with the first cavity of the fixing piece, and the first pipe body is suitable for entering the cavity of the fixing piece;

the plate body is provided with a through hole which is communicated with the cylinder cavity of the first pipe body;

the barrel cavity of the second pipe body is communicated with the through hole, and the second pipe body is suitable for entering into an inner cavity of a tool arranged at the wellhead.

In one possible design, the device further comprises a flat thrust bearing, one part of which is located in the barrel cavity of the first tubular body and the other part of which is located in the cavity of the fixing member.

In a possible design, the base further comprises two hoisting rings, and the two hoisting rings are symmetrically arranged on two sides of the first pipe body.

In one possible design, the elastic buffer means is a profiled spring.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

when the well entering tool needs to be connected or detached at the well mouth, the base can be fixed at the well mouth, one end of the well entering tool is arranged on the upper end surface of the bearing seat, and the plurality of centering claws surround the periphery of the lower part of the well entering tool; under the effect of the gravity of the well entering tool, the middle part of the righting claw is driven by the bearing seat to move downwards together, the middle part of the righting claw is connected with the upper part of the bearing seat, and the included angle between the extending direction of the righting claw and the horizontal plane is smaller than 90 degrees, so that the included angle between the extending direction of the righting claw and the horizontal plane is driven by the lower part of the righting claw to move in the track groove to become smaller and smaller.

Meanwhile, as the elastic buffer device is sleeved at the lower part of the bearing seat, when one end of the well entering tool is arranged on the upper end surface of the bearing seat, the elastic buffer device is compressed; when the well entering tool is connected or detached, the well entering tool is separated from the bearing seat, and the bearing seat is restored to the position before use under the elastic action of the elastic buffer device, so that the device is convenient for subsequent use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a perspective view of a well tool connection aid provided in accordance with an embodiment of the present application;

FIG. 2 is an elevation view of a well tool connection aid provided in accordance with an embodiment of the present application;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a perspective view of a fastener of the access tool connection aid according to an embodiment of the present disclosure;

FIG. 5 is an elevation view of a fastener of a well tool connection aid provided in accordance with an embodiment of the present application;

FIG. 6 is a top view of a fastener of the access tool connection aid according to an embodiment of the present disclosure;

FIG. 7 is an elevation view of a support block in the connection aid for a well tool provided in an embodiment of the present application;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a schematic view of a centralizer of the connection aid for a well tool according to an embodiment of the present disclosure;

FIG. 10 is a schematic view of a connection aid for a well tool according to an embodiment of the present disclosure in use;

fig. 11 is a schematic diagram illustrating a state of the connection auxiliary device for a well-entering tool according to the embodiment of the present application after use.

The reference numerals in the drawings denote:

1-a base, 11-a first pipe body, 12-a plate body, 121-a through hole, 13-a second pipe body, 14-a hoisting ring,

2-a fixed piece, 21-a first cavity, 22-a convex ring, 23-a track groove, 24-a limiting block, 241-a fixed hole, 242-a second cavity and 25-a limiting groove,

3-support base, 31-first part, 311-fixing groove, 312-pin hole, 32-second part, 33-third part,

4-an elastic buffer device, which is provided with a plurality of elastic buffer elements,

5-righting claw, 51-contact head, 52-connecting rod, 53-linkage part, 54-through groove, 55-connecting hole,

6-plane thrust bearing.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

Before the embodiments of the present application are described in further detail, the terms of orientation, such as "upper," "lower," "middle," "upper," "lower," "upper end surface," and "lower end surface," referred to in the embodiments of the present application, are only used to clearly describe the structure of the connection auxiliary device of the tool in the embodiments of the present application with reference to the orientation shown in fig. 2, and do not have a meaning of limiting the scope of the present application.

Unless defined otherwise, all technical terms used in the examples of the present application have the same meaning as commonly understood by one of ordinary skill in the art. In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.

Embodiments of the present application provide a well entry tool connection aid that is illustrated in perspective view in fig. 1, in front view in fig. 2, and in cross-section along line a-a in fig. 2 in fig. 3.

Referring to fig. 1-3, the apparatus comprises: the device comprises a base 1, a fixing part 2, a bearing seat 3, an elastic buffer part 4 and a plurality of centralizing claws 5.

Wherein, the mounting 2 is fixed on the base 1 for realize the fixed of bearing seat 3 and a plurality of claw of righting.

The fixing part 2 is provided with a first cavity 21 which is communicated up and down, the inner wall of the first cavity 21 is provided with a convex ring 22 which protrudes inwards, the lower end of an elastic buffer device 4 which is sleeved at the lower part of the bearing seat 3 is abutted against the upper end face of the convex ring 22, and the lower part of the bearing seat 3 is movably positioned in the first cavity 21.

The fixing member 2 further has a plurality of track grooves 23, and the lower portions of the plurality of centering claws 5 are correspondingly limited in the track grooves 23 one by one and can move up and down along the track grooves 23.

The middle part of the righting claw 5 is connected with the upper part of the bearing seat 3, and the included angle between the extending direction of the righting claw 5 and the horizontal plane is smaller than 90 degrees, namely, the righting claw 5 is obliquely arranged.

The apparatus is configured such that, in use, the base 1 is secured at a well head, an end of a well entry tool (not shown) is located on an upper end face of the support block 3, and a plurality of centralizing jaws 5 are positioned around the circumference of a lower portion of the well entry tool.

The working principle that the well entry tool that this application embodiment provided connects auxiliary device does:

when the well entering tool needs to be connected or detached at the well mouth, the base 1 can be fixed at the well mouth, one end of the well entering tool is arranged on the upper end surface of the bearing seat 3, and the plurality of centralizing claws 5 surround the periphery of the lower part of the well entering tool; under the action of the gravity of the well entering tool, the supporting seat 3 drives the middle part of the righting claw 5 to move downwards together, the middle part of the righting claw 5 is connected with the upper part of the supporting seat 3, and the included angle between the extending direction of the righting claw 5 and the horizontal plane is smaller than 90 degrees, so that the included angle between the extending direction of the righting claw 5 and the horizontal plane is driven to become smaller and smaller (see fig. 10-11) while the lower part of the righting claw 5 moves in the track groove 23, in other words, the upper part of the righting claw 5 moves inwards more and more, namely, the lower parts of the well entering tool can be tightly embraced by the righting claws 5, so that the lower parts of the well entering tool are fixed, and at the moment, an operator can rotate the tool to perform screwing-on or unscrewing for example.

After the wellhead has been connected or disconnected from the tool, the device may be prevented from being stored at the tool station.

Because the elastic buffer device 4 is sleeved at the lower part of the bearing seat 3, when one end of the well entering tool is arranged on the upper end surface of the bearing seat 3, the elastic buffer device 4 is compressed; when the well entering tool is connected or detached, the well entering tool is separated from the bearing seat 3, and the bearing seat 3 is restored to the position before use under the elastic action of the elastic buffer device 4, so that the device can be used subsequently.

Therefore, the auxiliary device is connected to the instrument of going into the well that this application embodiment provided utilizes base 1, mounting 2, bearing seat 3, elastic buffer device 4 and a plurality of claw 5 of rightting, can utilize the well head to realize the fixed to the instrument of going into the well, has avoided empting of the instrument of going into the well, has ensured operating personnel's personal safety.

In a possible design, referring to fig. 4-6, the fixing member 2 further has a plurality of stoppers 24, the lower portion of the centering claw 5 is located between two adjacent stoppers 24, and a second cavity 242 formed between two adjacent stoppers 24 belongs to a part of the groove cavity of the track groove 23.

Each limiting block 24 is provided with a fixing hole 241, the lower part of the righting claw 5 is provided with a through groove 54, a track pin sequentially passes through the fixing hole 241 of one limiting block 24 between two adjacent limiting blocks 24, the through groove 54 and the fixing hole 241 of the other limiting block 24 between two adjacent limiting blocks 24, and the relative limitation of the position between the lower part of the righting claw 5 and the two adjacent limiting blocks 24 can be realized through the track pin.

Alternatively, when the well tool connection aid provided by the embodiments of the present application is not configured for use, the track pin may be located at a middle portion of the through slot 54, such that the track pin may move up and down in the through slot 54.

In a possible design, referring to fig. 4, 5, or 6, the fixing member 2 further has a plurality of limiting grooves 25, the limiting grooves 25 correspond to the second cavities 242 formed between two adjacent limiting blocks 24 one by one, the groove cavities of the limiting grooves 25 and the second cavities 242 formed between two adjacent limiting blocks 24 form the groove cavities of the rail grooves 23, and the limiting grooves 25 can provide a linear motion rail for the lower portion of the centering claw 5.

Optionally, the notch width of the limiting groove 25 is larger than the lower end width of the righting claw 5.

Alternatively, the upper cavity of the first cavity 21 may have the same structural shape as the upper end of the support base 3, for example, the upper cavity may have an inverted circular truncated cone shape to perform a limiting function.

In a possible design, see figures 7-8, the support base 3 comprises, from top to bottom, a first portion 31, a second portion 32 and a third portion 33, connected in series.

The first part 31 is an inverted round table body, the second part 32 and the third part 33 are both cylinders, and the cross-sectional area of the second part 32 is larger than that of the third part 33;

the upper end face of the first portion 31 is adapted to bear against an end of a well entry tool, in contact therewith;

the elastic buffer device 4 is sleeved on the third portion 33, and the upper end of the elastic buffer device 4 abuts against the lower end face of the second portion 32.

In one possible design, see fig. 7, the first part 31 has a plurality of fixation grooves 311, and the middle parts of the centering claws 5 are located in the fixation grooves 311 in a one-to-one correspondence to achieve a mounting fixation of the middle parts of the centering claws 5.

The groove walls located at both sides of the fixing groove 311 are provided with pin holes 312, the middle portion of the centering claw 5 is provided with a connection hole 55, and a fixing pin sequentially passes through the pin holes 312 located on the groove wall at one side of the fixing groove 311, the connection hole 55 and the pin holes 312 located on the groove wall at the other side of the fixing groove 311, so that the connection between the centering claw 5 and the groove walls at both sides of the fixing groove 311 can be realized by the fixing pin.

In a possible design, see fig. 8, the interior of the support 3 is hollow, i.e. the interior of the first 31, second 32 and third 33 portions are hollow. That is, the first portion 31 is a hollow inverted circular truncated cone, and the second portion 32 and the third portion 33 are tubular bodies. So set up, when the up end of bearing seat 3 was arranged in to the one end of going into the well instrument on, the one end of going into the well instrument can enter into the hollow inside of bearing seat 3, the fixed of the well instrument of being convenient for.

In one possible design, see fig. 9, the centering claw 5 comprises a contact head 51, a connecting rod 52 and a linkage 53, which are connected in sequence from top to bottom.

Wherein the contact head 51 is in contact with the outer wall of the well entry tool.

The interlocking portion 53 has a connecting hole 55 and a through groove 54, and the through groove 54 is an oval through groove.

Alternatively, referring to FIG. 9, the contact head 51 may approximate a trapezoidal shape such that the contact head 51 increases the contact area with the outer wall of the well entry tool.

Optionally, referring to fig. 9, an inner wall of the contact head 51 may be an arc surface, and when an outer wall of the well tool is an arc surface (for example, the well tool is a drift gauge), the inner wall of the contact head 51 may be attached to the outer wall of the well tool, which is more favorable for the centering claw 5 to hold the well tool.

In a possible design, see fig. 2-3, the base 1 comprises a first tube 11, a plate 12 and a second tube 13 connected in sequence from top to bottom.

Wherein, the cylinder cavity of the first tube 11 is communicated with the cavity of the fixed part 2, and the lower part of the bearing seat 3 can enter the cylinder cavity of the first tube 11; the first tube 11 is adapted to enter the first cavity 21 of the fixing member 2, so as to realize the detachable connection between the base 1 and the fixing member 2.

The plate body 12 is provided with a through hole 121, the through hole 121 is communicated with the cylinder cavity of the first tube body 11, and the lower part of the bearing seat 3 can also pass through the through hole 121.

The barrel cavity of the second pipe body 13 is communicated with the through hole 121, and the second pipe body 13 is suitable for entering into an inner cavity of a tool arranged at the wellhead, so that the base 1 is fixed at the wellhead to prevent the base 1 from sliding randomly.

Here, the tool provided at the wellhead may be a drill floor cartridge or a flange on a large spool of a simple wellhead or a flange on a blowout preventer.

It will be appreciated that the base 1 may be designed according to the state of the well head currently in use, while matching the well head of the well rig floor and the simple well head apparatus currently in use.

In a possible design, referring to fig. 3, the connection auxiliary device for a well-entering tool provided by the embodiment of the present application further includes a flat thrust bearing 6, and a part of the flat thrust bearing 6 is located in the cylindrical cavity of the first tubular body 11, and another part of the flat thrust bearing is located in the first cavity 21 of the fixing member 2.

Through setting up plane thrust bearing 6, can play helping hand drag reduction's effect. When the tool for entering the well is rotationally seated on the upper end surface of the bearing seat 3, the plane thrust bearing 6 can drive the fixing part 2, the bearing seat 3, the elastic buffer part 4 and the plurality of righting claws 5 to rotate together.

In a possible design, the base 1 further includes two hoisting rings 14, and the two hoisting rings 14 are symmetrically disposed on two sides of the first pipe 11. By providing the lifting ring 14, it is convenient for the lifting rope on the trolley to hook up to move and secure the device to the wellhead.

In one possible design, the elastic buffer element 4 may be a shaped spring, which is easy to arrange.

In a possible example, when a relatively heavy well entering tool needs to be connected or detached at a well head, the well entering tool connection auxiliary device provided by the embodiment of the application can be used for operating according to the following steps:

placing a base 1 of the well entering tool connection auxiliary device at a well mouth four-way joint or a well mouth centering position of a rotary table plane;

placing a well entering tool to be connected on the upper end surface of the base 1;

when the well entering tool does not move downwards any more and the plurality of centralizing claws 5 surround the well entering tool, an operator rotates the well entering tool to make up or break out;

and after the make-up or break-out is finished, placing the well entering tool connection auxiliary device at a tool table.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A well entry tool connection aid, the device comprising: a base (1), a fixing piece (2), a bearing seat (3), an elastic buffer device (4) and a plurality of righting claws (5),

the fixing piece (2) is fixed on the base (1);

the fixing piece (2) is provided with a first cavity (21) which is communicated up and down, an inward-protruding convex ring (22) is arranged on the inner wall of the first cavity (21), the lower end of the elastic buffer device (4) sleeved on the lower portion of the bearing seat (3) abuts against the upper end face of the convex ring (22), and the lower portion of the bearing seat (3) is movably located in the first cavity (21);

the fixing piece (2) is also provided with a plurality of track grooves (23), the lower parts of the plurality of righting claws (5) are limited in the track grooves (23) in a one-to-one correspondence manner, and can move up and down along the track grooves (23);

the middle part of the righting claw (5) is connected with the upper part of the bearing seat (3), and the included angle between the extending direction of the righting claw (5) and the horizontal plane is less than 90 degrees;

the device is configured such that, in use, the base (1) is secured at the wellhead, one end of a well entry tool is located on the upper end face of the support block (3), and the plurality of centralizing jaws (5) surround the circumference of the lower portion of the well entry tool.

2. A well-entering tool connection auxiliary device according to claim 1, characterized in that the fixing member (2) further has a plurality of stoppers (24), the lower part of the centering claw (5) is located between two adjacent stoppers (24), and a second cavity (242) formed between the two adjacent stoppers (24) belongs to a part of the groove cavity of the track groove (23);

each limiting block (24) is provided with a fixing hole (241), the lower part of the righting claw (5) is provided with a through groove (54), and a track pin sequentially penetrates through the fixing hole (241) of one limiting block (24) between two adjacent limiting blocks (24), the through groove (54) and the fixing hole (241) of the other limiting block (24) between two adjacent limiting blocks (24).

3. A well-entering tool connection auxiliary device according to claim 2, characterized in that the fixing member (2) further has a plurality of limiting grooves (25), the limiting grooves (25) correspond to the second cavities (242) formed between the two adjacent limiting blocks (24) one by one, and the cavities of the limiting grooves (25) and the second cavities (242) formed between the two adjacent limiting blocks (24) form the cavities of the track grooves (23).

4. A well-entry tool connection aid according to claim 2, characterized in that the holder block (3) comprises a first portion (31), a second portion (32) and a third portion (33) connected in sequence from top to bottom, wherein,

the first part (31) is an inverted cone, the second part (32) and the third part (33) are both cylinders, and the cross-sectional area of the second part (32) is larger than that of the third part (33);

the upper end face of the first portion (31) is suitable for bearing one end of the well entering tool, the elastic buffer device (4) is sleeved on the third portion (33), and the upper end of the elastic buffer device (4) abuts against the lower end face of the second portion (32).

5. A well tool connection aid according to claim 4, characterized in that the first part (31) has a number of fixation slots (311), the middle parts of the centralizing jaws (5) being located in the fixation slots (311) in a one-to-one correspondence;

the fixing device is characterized in that pin holes (312) are formed in the groove walls of the two sides of the fixing groove (311), a connecting hole (55) is formed in the middle of the righting claw (5), and the fixing pin sequentially penetrates through the pin holes (312) formed in the groove wall of one side of the fixing groove (311), the connecting hole (55) and the pin holes (312) formed in the groove wall of the other side of the fixing groove (311).

6. A well-entry tool connection aid according to claim 5, characterised in that the righting claw (5) comprises a contact head (51), a connecting rod (52) and a linkage part (53) connected in sequence from top to bottom, wherein,

the contact head (51) is in contact with an outer wall of the well entry tool;

the linkage portion (53) is provided with the connecting hole (55) and the through groove (54), and the through groove (54) is an oval through groove.

7. A well-entering tool connection aid according to claim 1, characterized in that the base (1) comprises a first tube (11), a plate (12) and a second tube (13) connected in sequence from top to bottom, wherein,

the cylinder cavity of the first pipe body (11) is communicated with the first cavity (21) of the fixing piece (2), and the first pipe body (11) is suitable for entering the first cavity (21) of the fixing piece (2);

the plate body (12) is provided with a through hole (121), and the through hole (121) is communicated with a cylinder cavity of the first pipe body (11);

the barrel cavity of the second tube (13) is communicated with the through hole (121), and the second tube (13) is suitable for entering into the inner cavity of the tool arranged at the wellhead.

8. A well-entry tool connection aid according to claim 7, characterized in that the device further comprises a flat thrust bearing (6), one part of the flat thrust bearing (6) being located in the bore of the first tubular body (11) and the other part being located in the first cavity (21) of the fixing member (2).

9. A well-entering tool connection aid according to claim 7, characterized in that the foundation (1) further comprises two hoisting rings (14), the two hoisting rings (14) being symmetrically arranged on both sides of the first tubular body (11).

10. A well tool connection aid according to claim 1, characterized in that the resilient damping means (4) is a profile spring.

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