CN211648130U - Logging instrument connecting tool - Google Patents

Abstract

The utility model discloses a logging instrument connecting tool belongs to the oil well measuring equipment field. The tool comprises a first connecting piece (1) connected with a conveying pipe column, a second connecting piece (2) connected with a logging instrument and a jackscrew (3). The outer wall of the second part of the first connecting piece (1) is provided with at least one first connecting hole (101); the second part of the first connecting piece (1) is sleeved on the first part of the second connecting piece (2), the outer wall of the first part of the second connecting piece (2) is provided with a connecting groove (201) opposite to the first connecting hole (101), and the jackscrew (3) is used for being inserted into the aligned first connecting hole (101) and the aligned connecting groove (201); the first part of the second connector (2) comprises a head (21) and a connecting portion (22) having a diameter smaller than the maximum diameter of the head (21). The tool can be quickly connected to a overshot after the connection is broken to overshot the logging instrument.

Description

Logging instrument connecting tool

Technical Field

The utility model relates to an oil well measuring equipment field, in particular to logging instrument connecting tool.

Background

Logging is required to obtain the geological data of the well before the well is produced, and during logging, a logging instrument needs to be lowered into the well by using a conveying pipe column.

Currently, a method commonly used in a well logging site is to use a casing collar locator to be respectively in threaded connection with a conveying pipe column and a measuring instrument, so that the measuring instrument is lowered into a well through the conveying pipe column.

In the implementation process of the embodiment of the present application, the inventor finds that at least the following problems exist in the prior art: the casing collar locator is used for connecting the measuring instrument and the conveying pipe column, when the casing collar locator is broken due to the fact that the blocking phenomenon occurs in the measuring process, the measuring instrument is retained in the well, the measuring instrument needs to be fished out from the well first to continue well logging engineering, time for later fishing and continuing well logging is increased, efficiency of the well logging engineering is affected, the broken casing collar locator cannot be reused, parts are wasted, and engineering cost of the well logging engineering is increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a logging instrument connecting tool can salvage the logging instrument fast after connecting the fracture. The technical scheme of the utility model as follows:

a logging tool connection tool comprising: a first connecting piece, a second connecting piece and a jackscrew, wherein,

the first connecting piece comprises a first part and a second part which are connected, the first part is connected with the conveying pipe column, at least one first connecting hole is formed in the outer wall, close to the second part, of the first connecting piece, and the first part is opposite to the second part;

the second connecting piece comprises a first part and a second part which are connected, the second part of the first connecting piece is sleeved on the first part of the second connecting piece, a connecting groove is arranged on the outer wall of the first part of the second connecting piece and is opposite to the first connecting hole, the jackscrew is suitable for being inserted into the first connecting hole and the connecting groove so that the first connecting piece and the second connecting piece can be detachably connected, and the second part of the second connecting piece is connected with a logging instrument;

the first part of the second connecting piece comprises a head part and a connecting part, the connecting part is connected with the head part, the diameter of the connecting part is smaller than the maximum diameter of the head part, and the fishing tool is matched with the structural shape formed by the head part and the connecting part.

Optionally, the first portion of the first coupling member is provided with a first cavity, the second portion of the first coupling member is provided with a second cavity, and the inner wall of the first cavity is provided with threads, such that the first portion of the first coupling member is threadedly connected to the transfer string, and the second cavity is configured to receive the first portion of the second coupling member.

Optionally, the first connector includes a baffle and an outer wall, the baffle is integrated with the outer wall, and the baffle is used for isolating the first cavity from the second cavity.

Optionally, the first portion of the second connecting member further includes a clamping portion, the clamping portion is connected to an end of the connecting portion away from the head portion, and a diameter of the clamping portion is smaller than an inner diameter of the second portion of the first connecting member.

Optionally, the connecting groove is disposed on an outer wall of the clamping portion, and a length of the jackscrew is greater than a distance between a bottom of the connecting groove and an inner wall of the first connecting member.

Optionally, the second part of the second connecting piece includes a main body part and a tail part, the maximum diameter of the main body part is larger than the inner diameter of the second cavity, and the second part of the first connecting piece is suitable for being clamped at the connection position of the main body part and the clamping part.

Optionally, the second connector is externally threaded at its rear portion for threaded connection with the logging tool.

Optionally, the tail of the second connecting piece is further provided with a sealing groove, and the sealing groove is used for placing a sealing ring to seal the joint of the second connecting piece and the logging instrument.

Optionally, the inner wall of the connecting groove is provided with threads, the outer wall of the jackscrew is provided with threads, and the jackscrew is in threaded connection with the second connecting piece.

Optionally, a second connecting hole is formed in the first portion of the second connecting member, the second connecting hole is communicated with two connecting grooves at opposite positions, and the length of the jackscrew is greater than the inner diameter of the second portion of the first connecting member.

The beneficial effects of the utility model include at least:

in the embodiment of the application, the second part of the first connecting piece is sleeved on the first part of the second connecting piece, the outer wall of the second part of the first connecting piece and the outer wall of the first part of the second connecting piece are oppositely provided with the first connecting hole and the connecting groove respectively, the first connecting piece and the second connecting piece can be connected by inserting the jackscrews into the first connecting hole and the connecting groove, and therefore the first connecting piece and the second connecting piece can be conveniently connected and disconnected. The first connecting piece and the second connecting piece of the tool can be respectively connected with the conveying pipe column and the logging instrument. The jackscrew is as connecting device, and after pulling force reached a definite value, the jackscrew disconnection, first connecting piece and second connecting piece separated to be detained the second connecting piece in the well. And the first part of second connecting piece includes head and connecting portion, and the maximum diameter of head is greater than the diameter of connecting portion, uses the fisher identical with this second connecting piece structure to be connected, can be with the first part joint of fisher and second connecting piece, and then can be detained the logging instrument in the well fast and salvage. The tool is simple in structure and convenient to operate, and can save time for fishing out logging instruments retained in the well, so that the logging efficiency is improved. And broken jackscrews are only needed, and the connecting tool can be reused only by replacing the jackscrews, so that the engineering cost of the tool is reduced.

Drawings

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

FIG. 1 is a schematic diagram of a tool coupling tool according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a first connector of a logging tool connection tool according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a second connector of a logging tool connection tool according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of another second connector of a logging tool connection tool according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of another tool coupling configuration provided in embodiments of the present application;

fig. 6 is a schematic structural diagram of an overshot provided in an embodiment of the present application.

The reference numerals in the figures denote:

1-a first connecting member; 11-a baffle; 12-outer wall; 101 — first connection hole; 102-a first cavity; 103-a second cavity;

2-second connecting member; 21-head; 22-a connecting portion; 23-a clamping part; 24-a body portion; 25-tail; 201-first connecting groove; 202-seal groove; 203-second connection hole;

3-top thread;

4-a fisher; 41-first cavity; 42-second cavity.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. Where the following description refers to reference numerals, the same reference numerals in different embodiments refer to the same or similar elements unless otherwise indicated.

The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of structures consistent with certain aspects of the invention, as detailed in the appended claims.

The embodiment of the application provides a logging instrument connecting tool, this instrument includes: the device comprises a first connecting piece, a second connecting piece and a jackscrew. The first connecting piece comprises a first part and a second part which are connected, the first part is connected with the conveying pipe column, the second connecting piece comprises a first part and a second part which are connected, at least one first connecting hole is formed in the outer wall of the second part of the first connecting piece, and the first part is opposite to the second part; the second part of the first connecting piece is sleeved on the first part of the second connecting piece, the outer wall of the first part of the second connecting piece is provided with a connecting groove, the connecting groove is opposite to the first connecting hole in position, the jackscrew is suitable for being inserted into the first connecting hole and the connecting groove so that the first connecting piece and the second connecting piece can be detachably connected, and the second part of the second connecting piece is connected with the logging instrument; the first part of the second connecting piece comprises a head part and a connecting part, the connecting part is connected with the head part, the diameter of the connecting part is smaller than the maximum diameter of the head part, and the fisher is matched with the structural shape formed by the head part and the connecting part.

The second part of the first connecting piece is sleeved on the first part of the second connecting piece in the connecting tool, the outer wall of the second part of the first connecting piece and the outer wall of the first part of the second connecting piece are oppositely provided with a first connecting hole and a connecting groove respectively, the first connecting piece and the second connecting piece can be connected by inserting the jackscrews into the first connecting hole and the connecting groove, and therefore the first connecting piece and the second connecting piece are conveniently connected and disconnected. The first connecting piece and the second connecting piece of the tool can be respectively connected with the conveying pipe column and the logging instrument. The jackscrew is as connecting device, and after pulling force reached a definite value, the jackscrew disconnection, first connecting piece and second connecting piece separated to be detained the second connecting piece in the well. And the first part of second connecting piece includes head and connecting portion, and the maximum diameter of head is greater than the diameter of connecting portion, uses the fisher identical with this second connecting piece structure to be connected, can be with the first part joint of fisher and second connecting piece, and then can be detained the logging instrument in the well fast and salvage. The tool is simple in structure and convenient to operate, and can save time for fishing out logging instruments retained in the well, so that the logging efficiency is improved. And broken jackscrews are only needed, and the connecting tool can be reused only by replacing the jackscrews, so that the engineering cost of the tool is reduced.

FIG. 1 is a schematic diagram of a tool coupling tool according to an embodiment of the present disclosure; FIG. 2 is a schematic diagram of a second connector of a logging tool connection tool according to an embodiment of the present disclosure; FIG. 3 is a schematic diagram of another second connector of a logging tool connection tool according to an embodiment of the present disclosure; FIG. 4 is a schematic diagram of another tool coupling configuration provided in embodiments of the present application; FIG. 5 is a schematic diagram of a first connector of a logging tool connection tool according to an embodiment of the present disclosure; fig. 6 is a schematic structural diagram of an overshot provided in an embodiment of the present application.

Referring to fig. 1, the present application provides a logging tool connection tool including a first connector 1, a second connector 2, and a jack screw 3. The first coupling member 1 is coupled to a transfer string and at least one first coupling hole 101 is provided in a second portion of the first coupling member 1.

For example, in one implementation manner of the embodiment of the present application, the first connecting member 1 may be a circular pipe having grooves at both ends, and the second portion of the first connecting member 1 is connected to the second connecting member 2, so as to connect the first connecting member 1 and the second connecting member 2 into a whole.

In one implementation of the embodiments of the present application, the first connection member 1 may include a first portion (not shown in the drawings) and a second portion (not shown in the drawings) connected with each other, the first portion of the first connection member 1 is connected with the conveying pipe string, and since the entire tool is vertically connected when the logging tool is lowered into the well, the first portion is an upper portion, and the second portion is a lower portion. A plurality of first connection holes 101 may be formed in the second portion of the first connection member 1, and the plurality of first connection holes 101 may be uniformly spaced in the circumferential direction on the outer wall of the first connection member 1 and penetrate through the thickness of the first connection member 1.

Referring to fig. 1, a second portion of the first connecting member 1 is sleeved on a first portion of the second connecting member 2, and an outer wall of the first portion of the second connecting member 2 may be provided with a connecting groove 201, and the connecting groove 201 is opposite to the first connecting hole 101, and the jackscrew 3 is adapted to be inserted into the first connecting hole 101 and the connecting groove 201, so that the first connecting member 1 and the second connecting member 2 are detachably connected, and the second portion of the second connecting member 2 is connected with the logging instrument.

For example, in one implementation manner of the embodiment of the present application, the second portion of the first connection member 1 is sleeved on the first portion of the second connection member 2, a plurality of connection grooves 201 are provided on an outer wall of the second portion of the second connection member 2, and each of the connection grooves 201 may correspond to one of the first connection holes 101, the first connection hole 101 is aligned with the connection groove 201, and the jackscrew 3 is inserted into the first connection hole 101 and the connection groove 201, so that the first connection member 1 and the second connection member 2 may be connected. Therefore, the jackscrew 3 is pulled out after the connecting tool is used, the first connecting piece 1 and the second connecting piece 2 are convenient to place, and the connecting tool is convenient to install before use.

The second part of the second coupling member 2 is connected to the logging tool so that when the tool is used to connect the logging tool to a conveying string, the jackscrew 3 is the actual force point of the entire connection tool and therefore the strength of the jackscrew 3 determines to some extent the strength of the tool. Even if the jackscrew 3 is broken due to overlarge stress, the first connecting piece 1 and the second connecting piece 2 are separated, the first connecting piece 1 and the second connecting piece 2 cannot be damaged, the first connecting piece 1 and the second connecting piece 2 can be reused, and only the jackscrew 3 needs to be replaced.

Referring to fig. 1, the first part of the second connecting member 2 includes a head 21 and a connecting portion 22, the connecting portion 22 is connected to the head 21, the diameter of the connecting portion 22 is smaller than the maximum diameter of the head 21, and the fisher is matched with the shape of the structure formed by the head 21 and the connecting portion 22.

For example, in one implementation of the embodiment of the present application, the second connector 2 may include a first portion (not shown in the drawings) and a second portion (not shown in the drawings) connected, wherein the first portion may include the head portion 21 and the connection portion 22. The head portion 21 may have a truncated cone shape and a diameter gradually decreasing from top to bottom, and the connecting portion 22 may have a cylindrical shape, and the diameter of the cylindrical shape may be slightly smaller than the maximum diameter of the truncated cone.

Referring to fig. 6, in one implementation of the embodiment of the present application, the overshot 4 may have a cylindrical shape and include two cavities, a first cavity 41 and a second cavity 42 in sequence from top to bottom, the inner diameter of the first cavity 41 may be larger than the inner diameter of the second cavity 42, and the inner diameter of the second cavity 42 may be slightly smaller than the maximum diameter of the head 21.

When the second connecting piece 2 and the logging instrument which are retained in the well are fished out of the well by using the fishing tool 4, the fishing tool 4 can be connected with the fishing tool 4 by using a conveying pipe column, the fishing tool 4 is controlled to move downwards, the head part 21 enters the second cavity 42 of the fishing tool 4 firstly, and in the continuous downward movement process of the fishing tool 4, the fishing tool 4 and the head part 21 move relatively. The lower end of the overshot 3 is slightly expanded due to the increasing diameter of the head 21. When the head 21 enters the first cavity 41 at its maximum diameter, the steps of the first cavity 41 and the second cavity 42 catch on the steps of the head 21 and the connecting part 22, thereby snapping the overshot 4 onto the second connecting element 2. The overshot 4 is then controlled to move upwards and the second connector 2 is fished out of the well together with the log.

Even the jackscrew 3 breaks like this, can be with the first part of second connecting piece 2 as salvaging the footpath, be connected fisher 4 and head 21 and connecting portion 22, can be fast with detaining second connecting piece 2 and the logging instrument fishing out in the well.

Alternatively, the head 21 may be formed by connecting a circular truncated cone and a cylinder, the diameter of the cylinder may be equal to the maximum diameter of the circular truncated cone, and the cylinder is connected to the connecting portion 22. Alternatively, in other implementations of the embodiments of the present application, the head 21 may have other shapes.

Referring to fig. 1, a first portion of a first coupling member 1 may be provided with a first cavity 102, a second portion of the first coupling member 1 may be provided with a second cavity 103, an inner wall of the first cavity 102 may be provided with threads, so that the first portion of the first coupling member 1 may be threadedly coupled to a conveying string, and the second cavity 103 may be configured as a first portion of a second coupling member 2. In an implementation manner of the embodiment of the present application, the first connecting element 1 may have a cylindrical shape with two cavities at two ends, the first cavity 102 is a cavity located above, and the inner wall of the first cavity 102 may be provided with threads so as to be threadably connected to the conveying pipe column. The second cavity 103 may be located below the first cavity 102, and when the first connector 1 and the second connector 2 are connected, the head 21 and the connecting portion 22 of the second connector 2 may be located in the second cavity 103.

In other implementations of the embodiments of the present application, the first connecting member 1 and the conveying pipe column may also be connected by clamping or other reasonable methods. Referring to fig. 1, the first connector 1 may include a baffle 11 and an outer wall 12, the baffle 11 may be integrated with the outer wall 12, and the baffle 11 may be used to isolate the first cavity 102 and the second cavity 103.

The first cavity 102 and the second cavity 103 may be two cavities separated by a baffle 11, that is, the longitudinal section of the first connecting member 1 may be H-shaped. For example, in an implementation manner of the embodiment of the present application, the first connecting element 1 may originally be a solid cylinder, two ends of the solid cylinder are respectively provided with a cavity, the two cavities may be the first cavity 102 and the second cavity 10, respectively, and the solid portion between the two cavities may be the baffle 11.

The baffle 11 and the outer wall 12 of the first connecting member 1 above the baffle 11 may be a first portion of the first connecting member 1, and a portion of the outer wall 12 below the baffle 11 may be a second portion of the first connecting member 1.

Alternatively, the portion of the outer wall 12 above the baffle 11 may be a first portion of the first connector 1, and the baffle 11 and the portion of the outer wall 12 below the baffle 11 may be a second portion of the first connector 1.

In another implementation manner of the embodiment of the present application, for example, referring to fig. 5, the first connecting member 1 may be a hollow cylinder, that is, the first cavity 102 and the second cavity 103 may be in a communicating state.

Referring to fig. 3, the first portion of the second connector 2 may further include a clamping portion 23, the clamping portion 23 may be fixedly connected to the connecting portion 22, and the clamping portion 23 may be smaller than an inner diameter of the second cavity 103 of the first connector 1.

For example, in one implementation manner of the embodiment of the present application, the clamping portion 23 may be located below the connecting portion 22, that is, the first portion of the second connecting member 2 may be, from top to bottom, the head portion 21, the connecting portion 22 and the clamping portion 23, the clamping portion 23 may also be cylindrical, and the diameter of the cylindrical shape may be slightly smaller than the inner diameter of the first cavity 102, so as to conveniently fit the second portion of the first connecting member 1 on the head portion 21, the connecting portion 22 and the clamping portion 23, and the depth of the second cavity 103 may be greater than the length of the structure formed by the head portion 21, the connecting portion 22 and the clamping portion 23.

Referring to fig. 1 and 3, a connection groove 201 may be provided on the catching portion 23, and the length of the jackscrew 3 may be greater than the distance between the bottom of the connection groove 201 and the outer wall of the first connection member 1.

For example, in one implementation manner of the embodiment of the present application, the diameter of the clamping portion 23 may be greater than the maximum diameter of the head portion 21, so that the clamping portion 23 is closest to the inner wall of the second cavity 103 of the first connecting member 1, and therefore the connecting groove 201 may be disposed on the clamping portion 23, which may save the material used for manufacturing the jackscrew 3, and may also ensure that the jackscrew 3 is stressed uniformly.

Of course, the position of the connection groove 201 is not limited to the above-mentioned clamping portion 23, and in other implementations of the embodiment of the present application, the connection groove 201 may also be disposed on the connection portion 22, so that the length of the jackscrew 3 may be correspondingly increased.

Alternatively, in another implementation manner of the embodiment of the present application, the diameter of the clamping portion 23 may be smaller than or equal to the diameter of the connecting portion 22.

In order to facilitate the installation and removal of the jack screw 3, the length of the jack screw 3 may be designed to be greater than the distance between the bottom of the connecting groove 201 and the inner wall of the first connecting member 1, so that the connection relationship between the first connecting member 1 and the second connecting member 2 can be secured even if the jack screw 3 slides into the connecting groove 201.

In an implementation manner of the embodiment of the present application, the first connection hole 101 and the connection groove 201 may be provided with internal threads, the jackscrew 3 may be provided with external threads, and the first connection member 1, the second connection member 2 and the jackscrew 3 are connected through threads, so that the connection strength between the three may be enhanced.

Specifically, referring to fig. 2, the first connection hole 101 may be divided into a first portion 1011 and a second portion 1012. Taking a longitudinal section of the first connecting member 1 as an example, the first portion 1011 may be located at the left side, the second portion 1012 may be located at the right side, and the inner diameter of the first portion 1011 may be larger than the inner diameter of the second portion 1012, and the inner diameter of the second portion 1012 may be equal to the inner diameter of the connecting groove 201. The jackscrew 3 may be a straight bolt or a cross bolt, the first connection hole 101 and the connection groove 201 are aligned, the jackscrew 3 is screwed into the first connection hole 101 and the connection groove 201 using a corresponding tool such that a screw portion of the bolt is located in the second portion 1012 of the first connection hole 101 and the connection groove 201, and a head portion of the bolt may be located in the first portion 1011 of the first connection hole 101, so that a portion of the jackscrew 3 protruding therefrom may be prevented from scratching a person or a wall of a well.

Referring to fig. 3, the second portion of the second connector 2 may include a body portion 24 and a tail portion 25, the maximum diameter of the body portion 24 may be larger than the inner diameter of the second cavity 103, and the second portion of the first connector 1 may be adapted to be caught at the junction of the body portion 24 and the catching portion 23.

For example, in one implementation manner of the embodiment of the present application, the main body portion 24 may be composed of a cylinder and a circular truncated cone, and the cylinder may be connected with the clamping portion 23, and the circular truncated cone is located below the cylinder. The diameter of the cylinder may be equal to the maximum diameter of the circular truncated cone and greater than the inner diameter of the second cavity 103 of the first connector 1, so that the joint of the cylinder of the main body portion 24 and the clamping portion 23 may form a step, and when the second portion of the first connector 1 is sleeved on the first portion of the second connector 2, the end surface of the second portion of the first connector 1 may be located at the step.

Referring to fig. 1 and 3, the tail portion 25 of the second connector 2 may be provided with external threads so as to be threadably connected to the logging tool.

For example, in one implementation of the embodiments of the present application, the tail portion 25 may be generally cylindrical and the outer wall may be provided with threads for connection with a logging tool.

In other implementations of the embodiments of the present application, the second connector 2 may be connected to the logging tool in other manners.

Referring to fig. 1 and 3, the tail portion 25 of the second connector 2 may further be provided with a sealing groove 202, and the sealing groove 202 may be used for placing a sealing ring to seal the connection between the second connector 2 and the logging tool.

For example, in an implementation manner of the embodiment of the present application, a plurality of sealing grooves 202 may be disposed on an outer wall of the tail portion 25, and sealing rings may be disposed in the sealing grooves 202, where the sealing rings may be used to seal a joint between the second connecting member 2 and the logging tool when the second connecting member 2 and the logging tool are connected.

Referring to fig. 5, a second connection hole 203 may be provided on a first portion of the second connection member 2, the second connection hole 203 communicating with two connection grooves 201 located opposite to each other, and the length of the jack screw 3 may be greater than the inner diameter of a second portion of the first connection member 1.

For example, in one implementation manner of the embodiment of the present application, two connection grooves 201 located on the same radial line of the clamping member 23 may be communicated, so as to form a second connection hole 203, that is, a longitudinal axis of the second connection hole 203 may be perpendicular to a longitudinal axis of the clamping member 23, and the longitudinal axis of the second connection hole 203 may pass through a center of a cross section of the clamping member 23.

The second portion of the first connecting member 1 may be provided with two opposite first connecting holes 101, and when the first connecting member 1 is sleeved on the second connecting member 2, the axes of the two first connecting holes 101 may coincide with the axis of the second connecting hole 2, and then the aligned first connecting hole 101 and second connecting hole 203 are directly penetrated by the long jackscrew 3, so as to connect the first connecting member 1 and the second connecting member 2, and the length of the long jackscrew 3 may be greater than the inner diameter of the second cavity 103. When the second connector 2 is provided with a plurality of second connection holes 203, and the plurality of second connection holes 203 are communicated at the center of the second connector 2, the long jackscrew 3 can be firstly used to pass through one of the second connection holes 203 and two opposite first connection holes 101. Several relatively short lengths of the tip wires 3 are then used to pass through the other second connection holes 203 and the opposite one of the first connection holes 102, and the lengths of the several tip wires 3 may be slightly greater than the radius of the second cavity 103. That is, one end of the several short length jack wires 3 is in contact with the jack wire 3 having the longest length and extending through the entire second connection hole 203, and the other end thereof extends out of the first connection hole 101.

Or, in other implementation manners of the embodiment of the present application, several jackscrews 3, the length of which is slightly greater than the radius of the second cavity 103, may also be directly used to pass through the corresponding first connection hole 101 and the second connection hole 201, so that one ends of the multiple jackscrews 3 are abutted against each other at the center of the second connection piece 2.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims (10)

1. A logging tool connection tool, the connection tool comprising: a first connecting piece (1), a second connecting piece (2) and a jackscrew (3), wherein,

the first connecting piece (1) comprises a first part and a second part which are connected, the first part is connected with the conveying pipe column, and the outer wall of the second part of the first connecting piece (1) is provided with at least one first connecting hole (101);

the second connecting piece (2) comprises a first part and a second part which are connected, the second part of the first connecting piece (1) is sleeved on the first part of the second connecting piece (2), a connecting groove (201) is arranged on the outer wall of the first part of the second connecting piece (2), the connecting groove (201) is opposite to the first connecting hole (101), the jackscrew (3) is suitable for being inserted into the first connecting hole (101) and the connecting groove (201) so that the first connecting piece (1) and the second connecting piece (2) can be detachably connected, and the second part of the second connecting piece (2) is connected with a logging instrument;

the first part of the second connecting piece (2) comprises a head part (21) and a connecting part (22), the connecting part (22) is connected with the lower end of the head part (21), and the diameter of the connecting part (22) is smaller than the maximum diameter of the head part (21).

2. A logging tool connection tool according to claim 1, wherein a first part of the first connection member (1) is provided with a first cavity (102), a second part of the first connection member (1) is provided with a second cavity (103), and the inner wall of the first cavity (102) is provided with a thread, whereby the first part of the first connection member (1) is in threaded connection with the transport string, and the second cavity (103) is configured to receive the first part of the second connection member (2).

3. A logging tool connection tool according to claim 2, wherein the first connector (1) comprises a baffle (11) and an outer wall (12), the baffle (11) being integral with the outer wall, the baffle (11) being adapted to isolate the first cavity (102) from the second cavity (103).

4. A logging instrument connection tool according to claim 3, wherein the first part of the second connector (2) further comprises a snap-in part (23), the snap-in part (23) being connected with the lower end of the connecting part (22), the diameter of the snap-in part (23) being smaller than the inner diameter of the second part of the first connector (1).

5. A logging instrument connection tool according to claim 4, wherein the connection groove (201) is provided on an outer wall of the snap-in part (23), and the length of the jackscrew (3) is larger than the distance between the bottom of the connection groove (201) and the inner wall of the first connection member (1).

6. A logging tool connection tool according to claim 5, wherein the second part of the second connector (2) comprises a body part (24) and a tail part (25), the maximum diameter of the body part (24) being larger than the inner diameter of the second cavity (103), and the second part of the first connector (1) is adapted to be snapped in at the connection of the body part (24) and the snap-in part (23).

7. Tool according to claim 6, wherein the tail (25) of the second connector (2) is provided with an external thread adapted to be screwed with the logging tool.

8. The tool according to claim 7, wherein the tail (25) of the second connector (2) is further provided with a sealing groove (202), the sealing groove (202) being adapted to place a sealing ring to seal the connection of the second connector (2) and the logging tool.

9. A logging tool connection tool according to claim 8, wherein the connection groove (201) is provided with a thread on its inner wall and the jackscrew (3) is provided with a thread on its outer wall, the jackscrew (3) being threadedly connected to the second connection member (2).

10. A logging tool connection tool according to claim 1, wherein a second connection hole (203) is provided in the first part of the second connection member (2), the second connection hole (203) connects two opposite connection grooves (201), and the length of the jackscrew (3) is larger than the inner diameter of the second part of the first connection member (1).

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