Positioning device for perforating tool

Abstract

The utility model discloses a positioning device for a perforation tool, and relates to the technical field of oil well completion perforation. The device comprises a fixed table; the first locking piece is installed on the fixing table, the first locking piece has a first state and a second state, and the first locking piece is configured to abut against the wall of the shaft in the first state so as to fix the fixing table; in the second state, the unlocking device is separated from the shaft wall so as to unlock the fixing table; the rotating table is rotationally mounted at one end of the fixed table, and the rotating table is arranged at one end of the perforating tool; the second locking piece is installed between the rotating table and the fixed table, the second locking piece has a third state and a fourth state, and the second locking piece is configured to fix the rotating table in the third state; in the fourth state, the rotating table is unlocked; the adjusting assembly is connected to the fixing table and the first locking piece. Therefore, due to the arrangement of the first locking piece and the second locking piece, the positioning device for the perforating tool is more convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil well completion perforation, and particularly relates to a positioning device for a perforating tool. Background Technique

[0002] Perforation is an operation activity that uses special shaped charge equipment to enter the predetermined formation in the wellbore for explosive perforation to allow the fluid in the underground formation to enter the hole. It is widely used in oil and gas fields and coal fields, and sometimes also in the exploitation of water sources. At present, the perforation technologies of various countries in the world can be divided into two categories according to the conveying method: one is cable conveyance perforation; the other is tubing conveyance perforation. According to its perforation principle, it can be divided into bullet perforation technology, shaped charge perforation technology, hydraulic jet perforation technology, mechanical slotted perforation technology, composite perforation technology, etc. Perforating tools play an important role in the oil and gas industry. Using perforating tools to perform perforation operations in oil and gas wells means forming holes that penetrate the wellbore inside the wellbore. These holes can connect the oil and gas layers with the wellbore, so that oil and gas can flow into the wellbore smoothly and be produced. At the same time, perforating tools can also increase production capacity, improve recovery rate, enhance the effect of oil and gas collection, and adjust operations such as injection pressure fracturing.

[0003] Before lowering the perforating tool into the well, the shaped charge perforating cartridge is installed in the tool. When the perforating tool goes deep underground, it needs to be supported and fixed by a positioning device. Usually, perforation needs to be carried out at a specific position in a specific direction. Therefore, the perforating tool is usually oriented so that the blasting vector from the shaped charge perforating cartridge points to the desired direction. Therefore, when the perforating tool goes deep underground, the perforation direction of the perforating tool needs to be adjusted again. However, when the perforating gun that has been lowered into the well needs to be adjusted in direction, the positioning device of the perforating tool needs to be unlocked first and then adjusted. This adjustment method is relatively cumbersome and may cause a large movement or swing in the position and direction of the perforating gun, so the position of the perforating gun needs to be repositioned, which will increase the difficulty of perforation operations and reduce the perforation efficiency. Content of the Utility Model

[0004] The utility model provides a positioning device for a perforating tool, which is used to solve the technical problem that the positioning device for a perforating tool in the prior art is not convenient to use.

[0005] The utility model is realized through the following technical solutions:

[0006] A positioning device for a perforating tool, comprising:

[0007] A fixed table, the axis of which is arranged along the first direction;

[0008] a first locking member, mounted on the fixing platform, the first locking member having a first state and a second state, the first locking member being configured to: in the first state, abut against the wall of the wellbore to fix the fixing platform; and in the second state, separate from the wall of the wellbore to unlock the fixing platform;

[0009] A rotating table, rotatably mounted on one end of the fixed table and coaxially arranged with the fixed table, and the rotating table is arranged at one end of the perforating tool;

[0010] A second locking member is installed between the rotating platform and the fixed platform, the second locking member has a third state and a fourth state, and the second locking member is configured to: fix the rotating platform in the third state; and unlock the rotating platform in the fourth state;

[0011] An adjusting component is connected to the fixed platform and the first locking member, and the adjusting component is configured to drive the first locking member to move so that the first locking member switches between the first state and the second state; at the same time, the adjusting component is configured to drive the second locking member to rotate so that the second locking member switches between the third state and the fourth state.

[0012] Further, the first locking member includes a plurality of locking portions, the plurality of locking portions are axially distributed around the axis of the fixing platform, and the locking portions include:

[0013] A slide rail, fixedly mounted on the fixed platform;

[0014] A slider, wherein one end of the slide rail is provided with a slide groove, and one end of the slider is slidably installed in the slide groove;

[0015] The abutment block is installed at one end of the sliding blocks which are away from each other.

[0016] Furthermore, the locking portion also includes an arc-shaped plate installed at an end of the abutment block away from the sliding block.

[0017] Furthermore, the adjustment component includes:

[0018] A driving member, mounted on the fixing platform, and an axis of the driving member is parallel to the first direction;

[0019] An adjusting disk, mounted on the driving member, wherein the driving member is configured to drive the adjusting disk to rotate around the axis of the driving member;

[0020] Positioning members, with a plurality of them. The adjustment disk has a plurality of guiding grooves, and the plurality of guiding grooves are arranged in one-to-one correspondence with the plurality of positioning members. The plurality of positioning members are arranged in one-to-one correspondence with the plurality of locking portions. One ends of the plurality of positioning members are respectively fixedly installed on the plurality of sliders, and the plurality of positioning members are respectively slidably installed in the plurality of guiding grooves. The guiding grooves are configured to guide the movement of the positioning members when the adjustment disk rotates, so that the first locking member switches between the first state and the second state.

[0021] Further, the driving member is a hollow shaft motor.

[0022] Further, the second locking member includes:

[0023] A locking column, one end of which is fixedly installed at the bottom end of the fixed table, the other end of which is rotatably inserted into the top end of the rotating table and is coaxially arranged with the fixed table. A plurality of locking grooves are formed on the outer side wall of the locking column, and the plurality of locking grooves are evenly distributed on the locking column;

[0024] A limiting frame, installed on the rotating table;

[0025] A plugging plate, which is slidably installed in the limiting frame along the radial direction of the rotating table;

[0026] A first plate, fixedly installed on the limiting frame;

[0027] A second plate, fixedly installed on the plugging plate;

[0028] An elastic member, with both ends respectively installed on the first plate and the second plate.

[0029] Further, it further includes:

[0030] A limiting ring, one end of which is installed on the rotating table;

[0031] A lifting ring, which is slidably installed in the limiting ring along the first direction and is coaxially arranged with the rotating table;

[0032] A telescopic member, one end of which is fixedly installed at one end of the lifting ring close to the rotating table. A first annular groove is formed at one end of the rotating table close to the lifting ring, and the other end of the telescopic member is slidably inserted into the first annular groove;

[0033] A push rod. A second annular groove is formed at one end of the lifting ring close to the rotating table. One end of the push rod is slidably inserted into the second annular groove. A long groove is formed at one end of the plugging plate close to the lifting ring. An included angle α is provided between one end of the push rod close to the long groove and one end of the plugging plate close to the push rod. One end of the push rod close to the plugging plate abuts against the edge of the long groove.

[0034] Furthermore, the range of the angle α is: 30°≤α≤70°.

[0035] Furthermore, it also includes:

[0036] A sleeve is mounted on one end of the lifting ring close to the fixed platform;

[0037] A guide block, one end of which is fixedly mounted on the inner wall of the sleeve;

[0038] A rotating column, a clearance hole adapted to the rotating column is provided on the fixed platform, one end of the rotating column is rotatably inserted in the sleeve, and the other end passes through the clearance hole and extends out of the fixed platform, a guide groove is provided on the rotating column, the other end of the guide block is slidably inserted in the guide groove, and the guide groove is spiral, and the guide groove is configured to guide the sleeve to make a linear reciprocating motion along the first direction when the rotating column rotates, so that the second locking member can switch between the third state and the fourth state.

[0039] Furthermore, it also includes:

[0040] A convex block is mounted on the side wall of the adjusting disk, and a plurality of through holes are formed on the adjusting disk, the number of the through holes is equal to the number of the guide slots, and the plurality of through holes are respectively arranged at one end of the plurality of guide slots away from the driving member;

[0041] The shifting block is fixedly mounted on one end of the rotating column extending from the fixed platform, and the protrusion is used to shift the shifting block to rotate.

[0042] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0043] The positioning device for a perforating tool provided by the present utility model includes a fixed table, a first locking member, a rotating table, a second locking member, and an adjusting assembly. The axis of the fixed table is arranged along a first direction. The first locking member is installed on the fixed table and has a first state and a second state. The first locking member is configured to: in the first state, abut against the wellbore wall to fix the fixed table; in the second state, separate from the wellbore wall to unlock the fixed table. The rotating table is rotatably installed at one end of the fixed table, is coaxially arranged with the fixed table, and is disposed at one end of the perforating tool along the first direction. The second locking member is installed between the fixed table and the rotating table and has a third state and a fourth state. The second locking member is configured to: in the third state, fix the rotating table; in the fourth state, unlock the rotating table. The adjusting assembly is connected to the fixed table and the first locking member and is configured to drive the first locking member to move so that the first locking member switches between the first state and the second state; at the same time, the adjusting assembly is configured to drive the second locking member to rotate so that the second locking member switches between the third state and the fourth state.

[0044] With the above structure, when using the positioning device for the perforating tool provided by the present utility model, the perforating tool is fixedly installed on the rotating table. After the perforating tool penetrates into the wellbore, first drive the first locking member to be in the first state through the adjusting assembly, so that the first locking member abuts against the wellbore wall to fix the fixed table in the wellbore, thereby fixing the perforating tool in the axial direction of the wellbore. When the perforating tool that has been lowered into the well needs to adjust the blasting vector of the perforating charge, first drive the second locking member through the adjusting assembly, so that the second locking member is in the fourth state and the rotating table is unlocked, and then the perforating tool can be rotated. Since the rotating table connected to the perforating tool is rotatably connected to the fixed table, when rotating the perforating tool, through the setting of the first locking member, the perforating tool is effectively supported to prevent the perforating tool from undergoing relative displacement or deflection in the wellbore. After the blasting vector of the perforating charge in the perforating tool is directed to the desired direction, drive the adjusting assembly again to make the second locking member in the third state to achieve the purpose of fixing the rotating table. Thus, the perforating tool is completely fixed in the wellbore to improve the accuracy of perforation. After the perforation is completed, drive the first locking member to be in the second state through the adjusting assembly, so that the first locking member is separated from the wellbore wall to unlock the fixed table, and finally the perforating tool can be removed from the wellbore. In this way, the perforating tool is fixed axially and circumferentially respectively. After the perforating tool is axially fixed, it can not only support the perforating tool, but also still be able to rotate the perforating tool to adjust the blasting direction of the perforating charge. After adjusting the direction, the perforating tool is circumferentially fixed again. Therefore, through the setting of the first locking member and the second locking member, during the process of adjusting the blasting vector of the perforating charge in the perforating tool, relative displacement and swing of the perforating tool in the wellbore are avoided, so that it is not necessary to reposition the position of the perforating tool, and thus the positioning device for the perforating tool provided by the present utility model is more convenient to use and the perforation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not limit the embodiments of the present utility model. In the drawings:

[0046] Figure 1 is a schematic structural diagram of the positioning device for the perforating tool provided by the embodiment of the present utility model;

[0047] Figure 2 is a schematic installation structure diagram of the first locking member and the adjusting assembly provided by the embodiment of the present utility model;

[0048] Figure 3 is a schematic installation structure diagram of the first locking member and the adjusting assembly provided by the embodiment of the present utility model;

[0049] Figure 4Schematic diagram of the installation structure of the second locking member and the adjusting assembly provided by the embodiment of the present utility model;

[0050] Figure 5 Schematic diagram of the installation structure of the second locking member and the adjusting assembly provided by the embodiment of the present utility model;

[0051] Figure 6 is Figure 5 partial enlarged view of area A in;

[0052] Figure 7 is Figure 5 partial enlarged view of area B in;

[0053] Figure 8 is Figure 5 partial enlarged view of area C in;

[0054] Figure 9 Schematic diagram of the structure of the adjusting disk provided by the embodiment of the present utility model.

[0055] Marks in the drawings and corresponding names of parts:

[0056] 1 - fixed platform, 2 - locking part, 21 - slide rail, 22 - slider, 23 - abutting block, 24 - arc plate, 3 - rotating platform, 31 - first annular groove, 4 - second locking member, 41 - locking post, 42 - limiting frame, 43 - plugging plate, 431 - long slot, 44 - first plate, 45 - second plate, 46 - elastic member, 47 - limiting ring, 48 - lifting ring, 481 - second annular groove, 49 - telescopic member, 50 - push rod, 5 - adjusting assembly, 51 - hollow shaft motor, 52 - adjusting disk, 521 - guiding groove, 522 - through hole, 53 - limiting member, 54 - convex block, 55 - dialing block, 6 - sleeve, 7 - guiding block, 8 - rotating column, 81 - guiding groove, 9 - perforating tool. Detailed implementation manners

[0057] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model.

[0058] It should be noted that when a component is referred to as being "fixed to" or "arranged on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0059] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0060] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0061] Embodiment:

[0062] This embodiment provides a positioning device for a perforating tool, which is used to solve the technical problem that the positioning device for a perforating tool in the prior art is not convenient to use. The positioning device for a perforating tool includes a fixed table 1, a first locking member, a rotating table 3, a second locking member 4, and an adjusting assembly 5, wherein:

[0063] The axis of the fixed table 1 is arranged along a first direction, that is, the axis direction of the fixed table 1 is the first direction.

[0064] The first locking member is installed on the fixed table 1. The first locking member has a first state and a second state. The first locking member is configured to: in the first state, the first locking member abuts against the wellbore wall to fix the fixed table 1; in the second state, the first locking member is separated from the wellbore wall to unlock the fixed table 1. Through the setting of the first locking member, it is more convenient to fix and move the fixed table 1.

[0065] The rotating table 3 is rotatably installed at one end of the fixed table 1 and is coaxially arranged with the fixed table 1. And the rotating table 3 is arranged at one end of the perforating tool 9. The perforating tool 9 is connected to the rotating table 3. When adjusting the perforating tool 9, the rotating table 3 is driven to rotate together. And the fixed fixed table 1 provides support for the perforating tool 9 when the perforating tool 9 rotates, to prevent the perforating tool 9 from displacing and deflecting in the wellbore.

[0066] The second locking member 4 is installed between the rotating table 3 and the fixed table 1. The second locking member 4 has a third state and a fourth state. The second locking member 4 is configured such that when the second locking member 4 is in the third state, the rotating table 3 is fixed; when the second locking member 4 is in the fourth state, the rotating table 3 is unlocked. In this way, through the setting of the second locking member 4, the perforating tool 9 can be rotated without unlocking the first locking member, thereby achieving the purpose of adjusting the blasting angle of the perforating charge.

[0067] The adjusting assembly 5 is connected to the fixed table 1 and the first locking member. The adjusting assembly 5 is configured to drive the first locking member to move so that the first locking member switches between the first state and the second state; at the same time, the adjusting assembly 5 is configured to drive the second locking member 4 to rotate so that the second locking member 4 switches between the third state and the fourth state. In this way, through the setting of the adjusting assembly 5, it is more convenient to adjust the states of the first locking member and the second locking member 4.

[0068] With the above structure, when using the positioning device for the perforating tool provided by the present utility model, the perforating tool 9 is fixedly installed on the rotating table 3. After the perforating tool 9 penetrates into the wellbore, first drive the first locking member to be in the first state through the adjusting assembly 5, so that the first locking member abuts against the wellbore wall to fix the fixed table 1 in the wellbore, thereby fixing the perforating tool 9 in the axial direction of the wellbore. When the perforating tool 9 that has been lowered into the well needs to adjust the blasting vector of the perforating charge, first drive the second locking member 4 through the adjusting assembly 5, so that the second locking member 4 is in the fourth state and the rotating table 3 is unlocked, and then rotate the perforating tool 9. Since the rotating table 3 connected to the perforating tool 9 is rotatably connected to the fixed table 1, when rotating the perforating tool 9, through the setting of the first locking member, the perforating tool 9 is effectively supported to prevent the perforating tool 9 from having relative displacement or deflection in the wellbore. After the blasting vector of the perforating charge in the perforating tool 9 is directed to the desired direction, drive the adjusting assembly 5 again to make the second locking member 4 in the third state to achieve the purpose of fixing the rotating table 3. Thus, the perforating tool 9 is completely fixed in the wellbore to improve the accuracy of perforation. After the perforation is completed, drive the first locking member to be in the second state through the adjusting assembly 5, so that the first locking member is separated from the wellbore wall to unlock the fixed table 1, and finally move the perforating tool 9 out of the wellbore. In this way, the perforating tool 9 is fixed axially and circumferentially respectively. After the perforating tool 9 is axially fixed, it can not only support the perforating tool 9, but also still be able to rotate the perforating tool 9 to adjust the blasting direction of the perforating charge. After adjusting the direction, the perforating tool 9 is circumferentially fixed again. Therefore, through the setting of the first locking member and the second locking member 4, during the process of adjusting the blasting vector of the perforating charge in the perforating tool 9, relative displacement and swing of the perforating tool 9 in the wellbore are avoided, so that it is not necessary to reposition the position of the perforating tool 9, and further, the positioning device for the perforating tool provided by the present utility model is more convenient to use and the perforation efficiency is improved.

[0069] An optional implementation manner of this embodiment is as follows: The first locking member includes a plurality of locking portions 2, and the plurality of locking portions 2 are circumferentially distributed around the axis of the fixed table 1. The locking portion 2 includes a slide rail 21, a slider 22 and an abutting block 23, wherein:

[0070] The slide rail 21 is fixedly installed on the fixed table 1. Specifically, an installation cylinder is provided on the fixed table 1, and one ends of the plurality of slide rails 21 are fixedly installed on the outer side wall of the installation cylinder, and the other ends of the plurality of slide rails 21 extend along the radial direction of the fixed table 1 and away from each other.

[0071] One end of the slide rail 21 is provided with a chute adapted to the slider 22. One end of the slider 22 is slidably installed in the chute. Specifically, a through hole, that is, the chute, is provided at the end of the slide rail 21 away from the fixed platform 1. The opposite sides of the slider 22 are provided with slide bars adapted to the chute, and the two slide bars are slidably installed in the chute.

[0072] The abutting blocks 23 are installed at the opposite ends of the slider 22, that is, the abutting blocks 23 are installed at the end of the slider 22 away from the mounting cylinder.

[0073] With the above structure, when it is necessary to fix the fixed platform 1, only need to drive the plurality of sliders 22 to move in the direction away from each other, driving the respective abutting blocks 23 installed on each slider 22 to move in the direction away from each other synchronously until each abutting block 23 abuts against the wellbore wall, so as to achieve the purpose of fixing the fixed platform 1. At this time, the first locking member is in the first state; when it is necessary to unlock the fixed platform 1, only need to drive the plurality of sliders 22 to move in the direction close to each other, driving the respective abutting blocks 23 installed on each slider 22 to move in the direction close to each other synchronously until each abutting block 23 is separated from the wellbore wall. At this time, the first locking member is in the second state.

[0074] Optionally, the locking portion 2 further includes an arc-shaped plate 24, which is installed at the end of the abutting block 23 away from the slider 22. In this way, through the arrangement of the arc-shaped plate 24, the contact area with the wellbore wall is increased, thereby increasing the friction force between the wellbore wall, and further making the fixed platform 1 fixed more firmly.

[0075] Optionally, the number of the locking portions 2 is four groups, and the four groups of locking portions 2 are evenly distributed on the fixed platform 1 around the axis of the fixed platform 1. In this way, the force on the four groups of locking portions 2 is more uniform.

[0076] An optional implementation manner of this embodiment is as follows: The adjusting assembly 5 includes a driving member, an adjusting disk 52 and a limiting member 53, where:

[0077] The driving member is installed on the fixed platform 1, and the axis of the driving member is parallel to the first direction.

[0078] The adjusting disk 52 is installed on the driving member, and the driving member is configured to drive the adjusting disk 52 to rotate around the axis of the driving member. In this way, when the driving member rotates, it drives the adjusting disk 52 to rotate synchronously.

[0079] The number of the limiting members 53 is multiple. The adjusting disk 52 has a plurality of guiding grooves 521. The plurality of guiding grooves 521 are arranged in one-to-one correspondence with the plurality of limiting members 53. The plurality of limiting members 53 are arranged in one-to-one correspondence with the plurality of locking portions 2. One ends of the plurality of limiting members 53 are respectively fixedly installed on the plurality of sliders 22, and the plurality of limiting members 53 are respectively slidably installed in the plurality of guiding grooves 521. The guiding grooves 521 are configured to guide the movement of the limiting members 53 when the adjusting disk 52 rotates, so as to switch the locking member between the first state and the second state.

[0080] Optionally, the driving member is a hollow shaft motor 51. It should be noted that the hollow shaft motor 51 is electrically connected to the power supply through a circuit. A switch for controlling the on-off of the circuit is arranged on the circuit. The switch can be a wired switch or a wireless switch. Selecting the hollow shaft motor 51 as the power source can provide stable rotational power and is convenient for control.

[0081] Specifically, a through groove is formed at the top end of the slide rail 21. The through groove is communicated with the sliding groove. The limiting member 53 is slidably installed in the through groove and the guiding groove 521. One end of the limiting member 53 passes through the through groove and is fixedly installed on the slider 22. The other end of the limiting member 53 extends out of the guiding groove 521. The adjusting disk 52 is in a disc shape. The distance between one end of the guiding groove 521 and the center of the adjusting disk 52 is less than the distance between the other end and the center of the adjusting disk 52, and the connection line between the two ends of the guiding groove 521 does not coincide with the straight line in the radial direction of the adjusting disk 52. Optionally, the guiding groove 521 can be in a straight shape or an arc shape.

[0082] With the above structure, when it is necessary to drive the first locking member to switch from the second state to the first state, the driving member rotates, driving the adjusting disk 52 to rotate, so that the limiting member 53 slides in the guiding groove 521, so that the limiting member 53 moves along the radial direction of the fixed table 1 and away from the center of the adjusting disk 52, driving the slider 22 connected to the limiting member 53 to slide on the slide rail 21 along the radial direction of the fixed table 1 and away from the center of the adjusting disk 52, and at the same time driving the abutting block 23 connected to the slider 22 to move synchronously until the arc-shaped block connected to the abutting block 23 abuts against the wellbore wall, and the first locking member switches to the first state; when it is necessary to drive the first locking member to switch back from the first state to the second state, the driving member rotates in the reverse direction, driving the adjusting disk 52 to rotate in the reverse direction, so that the limiting member 53 slides in the guiding groove 521, so that the limiting member 53 moves along the radial direction of the fixed table 1 and towards the center of the adjusting disk 52, driving the slider 22 connected to the limiting member 53 to move on the slide rail 21 along the radial direction of the fixed table 1 and towards the center of the adjusting disk 52, and at the same time driving the abutting block 23 connected to the slider 22 to move synchronously until the arc-shaped block connected to the abutting block 23 separates from the wellbore wall, and the first locking member switches back to the second state.

[0083] An alternative implementation of this embodiment is as follows: The first locking member includes a locking post 41, a limiting frame 42, a plugging plate 43, a first plate 44, and a second plate 45, where:

[0084] One end of the locking post 41 is fixedly installed at the bottom end of the fixed platform 1, and the other end is rotatably plugged into the top end of the rotating platform 3 and is coaxially arranged with the fixed platform 1. A plurality of locking grooves are formed on the outer sidewall of the locking post 41, and the plurality of locking grooves are evenly distributed on the locking post 41. Among them, the plurality of locking grooves include multiple groups of locking groove groups, and the multiple groups of locking groove groups are arranged at intervals along the axial direction of the locking post 41. One group of locking groove groups includes a plurality of locking grooves evenly arranged in the circumferential direction of the locking post 41.

[0085] The limiting frame 42 is installed on the rotating platform 3. The limiting frame 42 is composed of a top plate and two side plates. One ends of the two side plates are fixedly installed on the rotating platform 3, and the two side plates are arranged parallel to each other. The top plate is installed at the other ends of the two side plates, that is, the limiting frame 42 is in a U shape.

[0086] The plugging plate 43 is slidably installed in the limiting frame 42 along the radial direction of the rotating platform 3. Optionally, there is an included angle β between one end of the plugging plate 43 close to the locking post 41 and the top end of the rotating platform 3, and the range of this included angle β is 30° ≤ β ≤ 80°. Through the setting of the included angle β, it is more convenient for the plugging plate 43 to be plugged into any one of the locking grooves.

[0087] The first plate 44 is fixedly installed on the limiting frame 42. The first plate 44 can be connected to the limiting frame 42 by welding, bonding, or heat melting. Of course, it can also be integrally formed.

[0088] The second plate 45 is fixedly installed on the plugging plate 43 and is arranged opposite to the first plate 44.

[0089] Both ends of the elastic member 46 are installed on the first plate 44 and the second plate 45 respectively. Optionally, the elastic member 46 is a compression spring.

[0090] With the above structure, when the plugging plate 43 is driven to move towards the locking post 41 and is plugged into any one of the locking grooves in the locking post 41, the second plate 45 moves towards the first plate 44 and compresses the elastic member 46. At this time, the rotating platform 3 is fixed, that is, the second locking member 4 is in the fourth state; when the force driving the plugging plate 43 close to the locking post 41 disappears, the elastic member 46 returns, drives the second plate 45 to move away from the first plate 44, and drives the plugging plate 43 to move away from the locking post 41 until the plugging plate 43 completely exits the locking groove. At this time, the rotating platform 3 is unlocked, that is, the second locking member 4 is in the third state.

[0091] An alternative implementation of this embodiment is as follows: It further includes a limiting member 53, a lifting ring 48, a telescopic member 49, and a push rod 50, where:

[0092] One end of the limiting ring 47 is installed on the rotating table 3, and the limiting ring 47 is coaxially arranged with the rotating table 3.

[0093] The lifting ring 48 is slidably installed in the limiting ring 47 along the first direction and is coaxially arranged with the rotating table 3, that is, the outer diameter of the lifting ring 48 is equal to the inner diameter of the limiting ring 47. Through the setting of the limiting ring 47, the probability of the lifting ring 48 shifting during the movement along the first direction is reduced.

[0094] One end of the telescopic member 49 is fixedly installed at one end of the lifting ring 48 close to the rotating table 3. A first annular groove 31 is formed at one end of the rotating table 3 close to the lifting ring 48. The other end of the telescopic member 49 is slidably inserted into the first annular groove 31. Through the setting of the telescopic member 49, the probability of the lifting ring 48 shifting during the movement along the first direction is further reduced. At the same time, the lifting ring 48 is prevented from falling off the limiting ring 47.

[0095] Optionally, the telescopic member 49 includes a cylinder, a cylinder body, and a spring. One end of the cylinder body is slidably installed in the first annular groove 31. One end of the cylinder is slidably inserted into the cylinder body, and the other end of the cylinder is fixedly installed on the lifting ring 48. One end of the spring is fixedly installed on the inner bottom wall of the cylinder body, and the other end of the spring is fixedly installed on the end of the cylinder extending into the cylinder body.

[0096] A second annular groove 481 is formed at one end of the lifting ring 48 close to the rotating table 3. One end of the push rod 50 is slidably inserted into the second annular groove 481. Specifically, the longitudinal section of the second annular groove 481 is in a T shape, and one end of the push rod 50 slidably inserted into the second annular groove 481 is also in a T shape. In this way, through the cooperation of the T-shaped second annular groove 481 and the T-shaped push rod 50, the push rod 50 is prevented from falling out of the second annular groove 481. A long groove 431 is formed at one end of the plugging plate 43 close to the lifting ring 48. There is an included angle α between one end of the push rod 50 close to the long groove 431 and one end of the plugging plate 43 close to the push rod 50. One end of the push rod 50 close to the plugging plate 43 abuts against the edge of the long groove 431.

[0097] Optionally, the range of the included angle α is: 30° ≤ α ≤ 70°. If the included angle is too small, one end of the push rod 50 close to the plugging plate 43 is easily damaged; if the included angle is too large, materials are wasted.

[0098] With the above structure, when it is necessary to drive the plug-in board 43 to move towards the locking post 41, the driving lifting ring 48 is driven to move towards the turntable 3, driving the push rod 50 connected to the lifting ring 48 to move towards the plug-in board 43 at the same time. Since the push rod 50 abuts against the edge of the long slot 431 on the plug-in board 43, when the push rod 50 moves towards the plug-in board 43, the plug-in board 43 is simultaneously driven to move towards the locking post 41. When the end of the drag bar close to the plug-in board 43 abuts against the bottom wall of the long slot 431, the plug-in board 43 stops moving; when it is necessary to drive the plug-in board 43 to move away from the locking post 41, the driving lifting ring 48 is driven to move away from the turntable 3, thereby driving the push rod 50 to move away from the plug-in board 43. In this way, the thrust force for pushing the plug-in board 43 to move disappears, that is, the force for compressing the elastic member 46 disappears, and the elastic member 46 returns, driving the plug-in board 43 to move away from the locking post 41.

[0099] An alternative implementation of this embodiment is as follows: It further includes a sleeve 6, a guide block 7, and a rotating column 8, where:

[0100] The sleeve 6 is installed at one end of the lifting ring 48 close to the fixed platform 1, and the axis of the sleeve 6 is arranged parallel to the first direction.

[0101] One end of the guide block 7 is fixedly installed on the inner side wall of the sleeve 6.

[0102] A relief hole adapted to the rotating column 8 is provided on the fixed platform 1. One end of the rotating column 8 is rotatably inserted into the sleeve 6. Optionally, the rotating column 8 includes a first column and a second column. A rib is provided on the side wall of the first column, and the length direction of the rib is arranged parallel to the axis direction of the rotating column 8. A circular groove is provided at the top end of the second column, and a groove adapted to the rib is provided on the side wall of the circular groove. One end of the first column is inserted into the circular groove, and the rib is inserted into the groove. The other end of the rotating column 8 passes through the relief hole and extends out of the fixed platform 1, and the rotating column 8 cannot move along the first direction in the relief hole. A guide groove 81 is provided on the rotating column 8, that is, the guide groove 81 is located on the outer side wall of the second column. The other end of the guide block 7 is slidably inserted into the guide groove 81, and the guide groove 81 is spiral. The guide groove 81 is configured to guide the sleeve 6 to perform a linear reciprocating motion along the first direction when the rotating column 8 rotates, so that the second locking member 4 is switched between the third state and the fourth state.

[0103] Through the above structure, since the guide groove 81 is spiral, that is, from one end of the guide groove 81 to the other end of the guide groove 81, the vertical distance between the guide groove 81 and the inner bottom wall of the sleeve 6 gradually decreases. Therefore, when the rotating column 8 rotates, the guide block 7 moves in the guide groove 81, and at the same time, the sleeve 6 makes a linear reciprocating motion along the first direction, so that the drive ring moves in the direction closer to or away from the rotating table 3, and then drives the second locking member 4 to switch between the third state and the fourth state.

[0104] An optional implementation of this embodiment is as follows: the adjustment component 5 further includes a protrusion 54 and a shift block 55, wherein:

[0105] The protrusion 54 is installed on the side wall of the adjusting disk 52, and a plurality of through holes 522 are opened on the adjusting disk 52. The number of the through holes 522 is equal to the number of the guide grooves 521, and the plurality of through holes 522 are respectively arranged at the end of the plurality of guide grooves 521 away from the driving member, and the through holes 522 are connected to the guide grooves 521. Optionally, the through holes 522 are arc-shaped, and the through holes 522 and the adjusting disk 52 are coaxially arranged. In this way, the coaxially arranged through holes 522 and the adjusting disk 52 can continue to drive the adjusting disk 52 to rotate when the adjusting disk 52 rotates to the first locking member in the first state, and will not affect the state of the first locking member.

[0106] The shift block 55 is fixedly mounted on one end of the rotating column 8 extending out of the fixed platform 1, and the protrusion 54 is used to shift the shift block 55 to rotate. Specifically, the cross-section of the shift block 55 is waist-shaped, and the center of the shift block 55 does not coincide with the axis of the rotating column 8. In this way, through the setting of the shift block 55, when the adjusting disk 52 rotates, the protrusion 54 is driven to rotate synchronously. When the protrusion 54 passes the shift block 55, the protrusion 54 abuts against the shift block 55, and the adjusting disk 52 continues to rotate. The protrusion 54 shifts the shift block 55 to rotate, thereby driving the rotating column 8 to rotate synchronously.

[0107] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A positioning device for a perforating tool, characterized in that Comprising: A fixed platform (1) with its axis arranged along the first direction; A first locking member installed on the fixed platform (1), which has a first state and a second state, and is configured to: when in the first state, abut against the wellbore wall to fix the fixed platform (1); when in the second state, separate from the wellbore wall to unlock the fixed platform (1); A rotating platform (3) rotatably installed at one end of the fixed platform (1), coaxially arranged with the fixed platform (1), and the rotating platform (3) is arranged at one end of the perforating tool (9); A second locking member (4) installed between the rotating platform (3) and the fixed platform (1), which has a third state and a fourth state, and is configured to: when in the third state, fix the rotating platform (3); when in the fourth state, unlock the rotating platform (3); An adjusting assembly (5) connected to the fixed platform (1) and the first locking member, and the adjusting assembly (5) is configured to drive the first locking member to move so that the first locking member switches between the first state and the second state; at the same time, the adjusting assembly (5) is configured to drive the second locking member (4) to rotate so that the second locking member (4) switches between the third state and the fourth state.

2. The positioning device for a perforating tool according to claim 1, wherein The first locking member includes a plurality of locking portions (2), and the plurality of locking portions (2) are circumferentially distributed around the axis of the fixed platform (1). The locking portion (2) includes: A slide rail (21) fixedly installed on the fixed platform (1); A slider (22), with a chute opened at one end of the slide rail (21), and one end of the slider (22) is slidably installed in the chute; An abutting block (23) installed at the mutually opposite ends of the slider (22).

3. The positioning device for a perforating tool according to claim 2, characterized in that, The locking portion (2) further includes an arc-shaped plate (24) installed at the end of the abutting block (23) away from the slider (22).

4. The positioning device for a perforating tool according to claim 2, characterized in that, The adjusting assembly (5) includes: A driving member installed on the fixed platform (1), and the axis of the driving member is parallel to the first direction; An adjusting disk (52) installed on the driving member, and the driving member is configured to drive the adjusting disk (52) to rotate around the axis of the driving member; A plurality of limiting members (53), and the adjusting disk (52) has a plurality of guiding grooves (521). The plurality of guiding grooves (521) are arranged in one-to-one correspondence with the plurality of limiting members (53). The plurality of limiting members (53) are arranged in one-to-one correspondence with the plurality of locking portions (2). One ends of the plurality of limiting members (53) are respectively fixedly installed on the plurality of sliders (22), and the plurality of limiting members (53) are respectively slidably installed in the plurality of guiding grooves (521). The guiding groove (521) is configured to guide the limiting member (53) to move when the adjusting disk (52) rotates, so that the first locking member switches between the first state and the second state.

5. The positioning device for a perforating tool according to claim 4, characterized in that, The driving member is a hollow shaft motor (51).

6. The positioning device for a perforating tool according to claim 4, characterized in that, The second locking member (4) includes: A locking column (41), one end of which is fixedly mounted on the bottom end of the fixed platform (1), and the other end of which is rotatably plugged into the top end of the rotating platform (3), and is coaxially arranged with the fixed platform (1); a plurality of locking grooves are formed on the outer wall of the locking column (41), and the plurality of locking grooves are evenly distributed on the locking column (41); A limiting frame (42) is mounted on the rotating platform (3); A plug-in board (43) which can be slidably installed in the limiting frame (42) along the radial direction of the rotating table (3); A first plate (44) is fixedly mounted on the limiting frame (42); A second plate (45) is fixedly mounted on the plug-in plate (43); The elastic member (46) has two ends respectively mounted on the first plate (44) and the second plate (45).

7. The positioning device for a perforating tool according to claim 6, wherein, Also includes: A limiting ring (47), one end of which is mounted on the rotating table (3); A lifting ring (48) which can be slidably installed in the limiting ring (47) along the first direction and is coaxially arranged with the rotating table (3); A telescopic member (49), one end of which is fixedly mounted on an end of the lifting ring (48) close to the rotating table (3); a first annular groove (31) is formed on an end of the rotating table (3) close to the lifting ring (48); and the other end of the telescopic member (49) is slidably inserted into the first annular groove (31); A push rod (50), a second annular groove (481) is provided at one end of the lifting ring (48) close to the rotating table (3), one end of the push rod (50) is slidably inserted in the second annular groove (481), a long groove (431) is provided at one end of the plug plate (43) close to the lifting ring (48), an angle α is provided between one end of the push rod (50) close to the long groove (431) and one end of the plug plate (43) close to the push rod (50), and one end of the push rod (50) close to the plug plate (43) abuts against the edge of the long groove (431).

8. A positioning device for a perforating tool according to claim 7, characterized in that, The range of the angle α is: 30°≤α≤70°.

9. The positioning device for a perforating tool according to claim 8, characterized in that, Also includes: A sleeve (6) is mounted on one end of the lifting ring (48) close to the fixed platform (1); A guide block (7), one end of which is fixedly mounted on the inner wall of the sleeve (6); A rotating column (8), a clearance hole adapted to the rotating column (8) is provided on the fixed platform (1), one end of the rotating column (8) is rotatably inserted in the sleeve (6), and the other end passes through the clearance hole and extends out of the fixed platform (1), a guide groove (81) is provided on the rotating column (8), the other end of the guide block (7) is slidably inserted in the guide groove (81), and the guide groove (81) is spiral, and the guide groove (81) is configured to guide the sleeve (6) to perform linear reciprocating motion along the first direction when the rotating column (8) rotates, so that the second locking member (4) switches between the third state and the fourth state.

10. The positioning device for a perforating tool according to claim 9, characterized in that, The adjustment component (5) also includes: A convex block (54) is mounted on a side wall of the adjusting disk (52); a plurality of through holes (522) are provided on the adjusting disk (52); the number of the through holes (522) is equal to the number of the guide grooves (521); and the plurality of through holes (522) are respectively arranged at one end of the plurality of guide grooves (521) away from the driving member; The shifting block (55) is fixedly mounted on one end of the rotating column (8) extending from the fixed platform (1), and the protrusion (54) is used to shift the shifting block (55) to rotate.

Images