CN215256114U

CN215256114U - Instrument fishing device

Info

Publication number: CN215256114U
Application number: CN202121200612.7U
Authority: CN
Inventors: 王利斌; 何万通; 于浩洋; 李哲
Original assignee: China Coal Zhejiang Survey And Design Co ltd
Current assignee: China Coal Zhejiang Survey And Design Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-12-21
Anticipated expiration: 2031-05-31

Abstract

The application relates to an instrument fishing device which comprises a barrel, wherein at least two groups of clamping assemblies are arranged on the inner wall of the barrel along the circumferential direction; the clamping assembly comprises a clamping block and a clamping spring, a plurality of movable grooves which are in one-to-one correspondence with the clamping assembly are formed in the inner wall of the barrel along the circumferential direction, one end of the clamping block is slidably arranged in each movable groove, the clamping spring is arranged in each movable groove, and two ends of the clamping spring are respectively connected with the bottom of each movable groove and the clamping block; the method has the effect of facilitating smooth salvage of the measurement while drilling instrument.

Description

Instrument fishing device

Technical Field

The application relates to the field of fishing tools, in particular to an instrument fishing device.

Background

The conditions of excessive coal seam gangue inclusion, coal seam collapse and the like are frequently encountered in the drilling process of the coal bed gas horizontal well, and the conditions of overlarge fatigue damage, fracture and the like of the directional joint are easily caused when the complex conditions are treated, so that the measurement-while-drilling instrument falls into an open hole section. Therefore, the measurement-while-drilling instrument needs to be fished out of the horizontal section drilling hole.

In the prior art, the used fishing device is suitable for fishing in a drill rod, but in an open hole section, particularly a horizontal section coal bed, rock debris is easy to block, a lateral measurement instrument while drilling is likely to collide with a rock wall and fall off in the fishing process, the situation that the fishing is difficult to achieve is easily caused, and an improvement space exists.

SUMMERY OF THE UTILITY MODEL

In order to facilitate smooth salvage of a measurement while drilling instrument, the application provides an instrument salvaging device.

The application provides an instrument fishing device adopts following technical scheme:

the instrument fishing device comprises a barrel, wherein at least two groups of clamping assemblies are arranged on the inner wall of the barrel along the circumferential direction; the centre gripping subassembly includes grip block and centre gripping spring, is provided with a plurality of movable grooves with the centre gripping subassembly one-to-one along circumference on the inner wall of barrel, the one end of grip block slides and sets up in the movable groove, the centre gripping spring sets up in the movable groove and both ends are connected with movable groove tank bottom and grip block respectively.

Through adopting above-mentioned technical scheme, the barrel top is connected with the output of well drilling instrument, it makes in the bore hole section to visit under the barrel and enters into the barrel inboard and be used for playing the guard action to the instrument while drilling to make along with the drilling instrument, the barrel is visited gradually and is made along with the inclined pointed end and the grip block butt of instrument while drilling, the grip block removes towards keeping away from barrel axle center direction, treat that the inclined pointed end of instrument while drilling removes behind the grip block top, the grip block butts along with the outer wall of instrument inclined pointed end below, make the barrel difficult to drop at the in-process that rises, along with the drilling instrument by smooth salvage out.

Optionally, the bottom of the end of the clamping block located outside the movable groove is obliquely arranged upwards.

By adopting the technical scheme, the inclined arrangement of the bottom of the end, which is positioned outside the movable groove, of the clamping block plays a role in facilitating the inclined tip of the while-drilling instrument to smoothly pass through the clamping blocks and smoothly move to the upper part of the clamping block.

Optionally, a plurality of protection steel wires are axially arranged in the cylinder body, and two ends of each protection steel wire are connected and are in a ring shape; the two sides of the protection steel wire are fixedly connected with the inner wall of the barrel respectively, and an interval is formed between the outer wall of the protection steel wire and the inner wall of the barrel.

Through adopting above-mentioned technical scheme, the head of protection steel wire, be the circle and fix at the barrel inner wall after the tail both ends are connected, the protection steel wire is formed with the interval with the barrel inner wall, when the instrument rises in the barrel and through a plurality of protection steel wires while drilling, the outer wall and the protection steel wire inner wall butt of instrument while drilling, prevent that the instrument while drilling from hitting the barrel inner wall, it still plays the effect of holding up to produce vertical frictional force between protection steel wire and the instrument while drilling, be used for dragging the instrument while drilling, make the protection steel wire bear the certain gravity of instrument while drilling, play anticollision and anticreep effect to the instrument while drilling.

Optionally, the protection steel wire is obliquely arranged downwards.

Through adopting above-mentioned technical scheme, the slope setting of protection steel wire plays the effect of being convenient for to rise along with the drilling instrument, improves the effect of holding up of protection steel wire simultaneously.

Optionally, the bottom of the cylinder body is provided with a guide shoe.

By adopting the technical scheme, the guide shoe is used for preventing the bottom port of the cylinder from being scratched or inserted into a well wall and guiding the cylinder to smoothly go down to the bottom of the well.

Optionally, the guide shoe bottom is provided with salvage most advanced, salvage most advanced and be snakelike along barrel length direction towards keeping away from the extension of barrel below.

Through adopting above-mentioned technical scheme, salvage most advanced setting and play the barrel of being convenient for and visit the effect of salvaging while drilling instrument in the barefoot well section, salvage most advanced when the barrel rotates along with drilling equipment and guide while drilling instrument and be right for in the instrument along vertical entering barrel along following of drilling instrument, prevent to follow the slope of drilling instrument and difficult by the centre gripping subassembly centre gripping.

Optionally, the bottom end face of the fishing tip is obliquely and upwardly arranged in an inclined manner.

By adopting the technical scheme, the guide surface is arranged to enable the instrument while drilling to contact with the guide surface first, and further the function of guiding the instrument while drilling to vertically enter the barrel is achieved.

Optionally, the top of barrel is provided with the top connection, the bottom and the barrel top threaded connection of top connection.

By adopting the technical scheme, the upper joint is used for being connected with a drilling tool so as to drive the cylinder body to rotate.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Description of reference numerals: 1. an upper joint; 2. a barrel; 21. a movable groove; 3. guiding a shoe; 4. a clamping assembly; 41. a clamping block; 42. a clamping spring; 5. protecting the steel wire; 6. fishing the tip; 7. an apparatus while drilling.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses instrument fishing device, refer to FIG. 1, including top connection 1, barrel 2 and guide shoe 3 from top to bottom coaxial setting in proper order, the upper end of top connection 1 is used for being connected in order to drive whole rotation with the drilling tool, the lower extreme of top connection 1 and the top threaded connection of barrel 2, the both ends intercommunication of barrel 2 is used for carrying out the centre gripping and the protection inboard with the instrument 7 of following drilling that needs salvage, 3 fixed connection of guide shoe is used for leading instrument 7 to following drilling in barrel 2 bottom barrel 2.

Referring to fig. 1, two sets of clamping assemblies 4 are circumferentially arranged on the inner wall of the cylinder 2, and each clamping assembly 4 comprises a clamping block 41 and a clamping spring 42. Two movable grooves 21 corresponding to the clamping components 4 one to one are formed in the inner wall of the barrel body 2 along the circumferential direction, the clamping block 41 is in plug-in fit with the movable grooves 21 along the axial direction of the barrel body 2, the clamping spring 42 is arranged in the movable grooves 21, and two ends of the clamping spring are fixedly connected with the bottoms of the movable grooves 21 and one end of the clamping block 41, which is located in the movable grooves 21. One end of the clamping block 41, which is far away from the clamping spring 42, extends to the outside of the movable groove 21, and the bottom of the end of the clamping block 41, which is located at the outside of the movable groove 21, is inclined in the oblique direction. The barrel 2 is downwards extended to enable the inclined tip of the while-drilling instrument 7 to be abutted against the inclined end face of the clamping block 41, the clamping block 41 moves towards the direction away from the axis of the barrel 2, after the inclined tip of the while-drilling instrument 7 moves to the position above the clamping block 41, the clamping block 41 abuts against the outer wall below the inclined tip of the while-drilling instrument 7 under the action of the clamping spring 42, the barrel 2 is made to be difficult to drop in the rising process, and the while-drilling instrument 7 is smoothly salvaged out.

Referring to fig. 1, three or four groups of clamping assemblies 4 on the inner wall of the cylinder 2 can be arranged along the circumferential direction, and three or four corresponding movable grooves 21 are formed along the circumferential direction of the inner wall of the cylinder 2, so that the clamping block 41 has stronger clamping capability on the while-drilling instrument 7.

Referring to fig. 1, a plurality of protection steel wires 5 are axially arranged in a cylinder 2, and two ends of each protection steel wire 5 are connected and are in an elliptical ring shape. The protection steel wire 5 is obliquely arranged downwards along the slant, so that an included angle between the protection steel wire 5 and the axis of the barrel 2 is an acute angle. The both sides on the major axis direction of protection steel wire 5 are respectively with barrel 2 inner wall fixed connection, are formed with the interval between the outer wall of protection steel wire 5 and the barrel 2 inner wall. When the while-drilling instrument 7 ascends in the barrel body 2 and passes through the protection steel wire 5, the outer wall of the while-drilling instrument 7 is abutted to the inner wall of the protection steel wire 5, the while-drilling instrument 7 is prevented from colliding against the inner wall of the barrel body 2, and vertical friction force generated between the protection steel wire 5 and the while-drilling instrument 7 also plays a role in supporting, so that the protection steel wire 5 bears certain gravity of the while-drilling instrument 7 and is used for dragging the while-drilling instrument 7.

Referring to fig. 1, both ends of the guide shoe 3 are communicated, and the inner and outer side walls of the guide shoe 3 are respectively flush with the inner and outer side walls of the cylinder 2 and the top of the guide shoe 3 is fixedly connected with the protection wire 5 positioned at the lowermost end. The bottom integrated into one piece of guide shoe 3 has salvage pointed end 6, salvages pointed end 6 and is snakelike along 2 length direction of barrel and extends towards keeping away from barrel 2 below to salvage the inclined setting that is upwards of the bottom terminal surface of pointed end 6. When salvaging the instrument 7 while drilling, the inclined end face of the salvaging tip 6 is firstly contacted with the instrument 7 while drilling, the guide shoe 3 rotates after entering the inner wall of the salvaging tip 6, the instrument 7 while drilling is righted through centrifugal force, and the follow-up device 7 is conveniently and fixedly held by the clamping component 4.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an instrument fishing device, includes barrel (2), its characterized in that: at least two groups of clamping assemblies (4) are arranged on the inner wall of the cylinder body (2) along the circumferential direction; centre gripping subassembly (4) are including grip block (41) and centre gripping spring (42), be provided with movable groove (21) a plurality of and grip block (4) one-to-one along circumference on the inner wall of barrel (2), the one end of grip block (41) slides and sets up in movable groove (21), centre gripping spring (42) set up in movable groove (21) and both ends are connected with movable groove (21) tank bottom and grip block (41) respectively.

2. The instrumentation fishing device of claim 1, wherein: the bottom of one end of the clamping block (41) positioned outside the movable groove (21) is obliquely and upwards arranged.

3. The instrumentation fishing device of claim 1, wherein: a plurality of protection steel wires (5) are axially arranged in the cylinder body (2), and two ends of each protection steel wire (5) are connected and are in a ring shape; the two sides of the protection steel wire (5) are fixedly connected with the inner wall of the barrel body (2) respectively, and an interval is formed between the outer wall of the protection steel wire (5) and the inner wall of the barrel body (2).

4. An instrument fishing device according to claim 3, wherein: the protection steel wire (5) is obliquely arranged downwards along the slant direction.

5. The instrumentation fishing device of claim 1, wherein: the bottom of the cylinder body (2) is provided with a guide shoe (3).

6. An instrument fishing device according to claim 5, wherein: the guide shoe (3) bottom is provided with salvage pointed end (6), salvage pointed end (6) are snakelike and extend towards keeping away from barrel (2) below along barrel (2) length direction.

7. An instrument fishing device according to claim 6, wherein: the bottom end face of the salvaging tip (6) is obliquely and upwards arranged in an inclined mode.

8. The instrumentation fishing device of claim 1, wherein: the top of barrel (2) is provided with top connection (1), the bottom and the barrel (2) top threaded connection of top connection (1).