Downhole instrument cable throwing and fishing tool

Abstract

The utility model discloses a downhole instrument cable dropping and fishing tool, and relates to the technical field of logging cable dropping and fishing tools, the downhole instrument cable dropping and fishing tool comprises a lifting rope, an upper shell and a fishing clamp holder, the lifting rope is installed and connected to the middle position of the upper end of the upper shell, and a positioning sleeve shell is arranged at the lower end of the upper shell; a telescopic positioner is arranged on the inner side of the positioning sleeve shell, an automatic rotator is arranged at the lower end of the positioning sleeve shell, a fishing clamp is arranged at the lower end of the automatic rotator, and a fishing hook rope is arranged on the portion, located on the automatic rotator, of the outer side of the fishing clamp. And the telescopic positioner, the automatic rotator and the salvage clamp holder are electrically connected with an external controller. The automatic rotator can drive the salvage clamp holder to rotate by an angle and can drive the salvage hook rope to rotate, during rotation, the salvage hook rope can hook a salvage object, and the salvage clamp holder can clamp the salvage object, so that during salvage, the salvage clamp holder can rotate by an angle according to needs for salvage.

Description

Technical Field

[0001] The utility model relates to the technical field of logging cable casting and fishing tools, in particular to a downhole instrument cable casting and fishing tool. Background Art

[0002] During oil drilling, logging, also known as completion electrical logging, must be carried out after drilling to the designed well depth in order to obtain various petroleum geological and engineering technical data as the original data for well completion and oil field development. This type of logging is customarily called open hole logging, and when salvaging items inside the logging well, downhole instrument cable salvage tools are required.

[0003] The existing Chinese patent CN217270099U disclosed on August 23, 2022 a production logging downhole instrument cable fishing tool, including a telescopic sleeve, wherein the same first block is fixedly connected to both sides of the inner wall of the lowermost tube body in the telescopic sleeve, and a steel wire rope is fixedly connected to the upper surface of the first block, and the top of the steel wire rope extends to the top of the telescopic sleeve. A first groove is opened on the front surface of the first block, and a spring is welded to the inner rear wall of the first groove, and a connecting plate is slidably connected between the inner top wall and the inner bottom wall of the first groove, and the front end of the spring is welded to the rear surface of the connecting plate.

[0004] However, during salvaging, the overall descending position of the above device is determined, which cannot effectively change the overall angular position, thereby causing the problem of inaccurate salvaging position when position deviation occurs. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a downhole instrument cable salvage tool. The automatic rotator can drive the salvage clamp to rotate and can drive the salvage hook rope to rotate. When rotating, the salvage hook rope can hook the salvaged object, and the salvage clamp can clamp the salvaged object, so that when salvaging, the salvage can be carried out according to the required rotation angle.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A downhole instrument cable salvage tool comprises a lifting rope, an upper shell and a salvage clamp, wherein the lifting rope is installed and connected to the middle position of the upper end of the upper shell, a positioning sleeve is provided at the lower end of the upper shell, a telescopic positioner is provided on the inner side of the positioning sleeve, an automatic rotator is provided at the lower end of the positioning sleeve, a salvage clamp is provided at the lower end of the automatic rotator, a salvage hook rope is provided on the outer side of the salvage clamp and located on the automatic rotator, and the telescopic positioner, the automatic rotator and the salvage clamp are electrically connected to an external controller.

[0008] Through the above technical scheme: the lifting rope is lifted and lowered through the external traction equipment, and the lifting rope is descending, so that the upper shell and the positioning sleeve are descending, and the positioning sleeve can be in contact with the external pipe wall due to the telescopic positioner on the inside, which is convenient for stable lifting and lowering. When moving to the salvage position, the automatic rotator can drive the salvage clamp to rotate an angle, and can drive the salvage hook rope to rotate. When rotating, the salvage hook rope can hook the salvage object, and the salvage clamp can clamp the salvage object, so that when salvaging, it can be rotated according to the required angle for salvage.

[0009] The utility model is further configured as follows: the salvage hook rope includes a middle steel rope, an outer hook head, a connecting end plate and an assembly screw head, the inner end of the connecting end plate is provided with an assembly screw head, the lower end of the connecting end plate is provided with a middle steel rope, the outer side of the middle steel rope is provided with an outer hook head, and the assembly screw head is connected to an automatic rotator.

[0010] Through the above technical solution: due to the salvage hook rope structure, it is convenient to hook the external salvage object during rotation for salvage.

[0011] The utility model is further configured such that the automatic rotator includes a rotating motor, a mounting disc and a clamp mounting shell, the circumferential side of the rotating motor is provided with a mounting disc, the lower end of the output shaft of the rotating motor is provided with a clamp mounting shell via a coupling, and the rotating motor is connected to the positioning sleeve via the mounting disc.

[0012] Through the above technical solution: due to the automatic rotator structure, it is convenient to rotate the angle for salvage.

[0013] The utility model is further configured such that the telescopic positioner includes an electric telescopic cylinder, a travel motor, a wheel housing and a travel wheel, the outer end of the piston rod of the electric telescopic cylinder is provided with a wheel housing, the inner side of the wheel housing is provided with a travel wheel, the outer end of the travel wheel is located on the wheel housing and a travel motor is provided, and the electric telescopic cylinder is connected to the positioning sleeve.

[0014] Through the above technical solution: due to the telescopic positioner structure, it is convenient to use while walking.

[0015] The utility model is further configured such that a total of four telescopic positioners are provided, and the telescopic positioners are symmetrically arranged on the positioning sleeve.

[0016] Through the above technical solution: since there are four telescopic positioners in total, and the telescopic positioners are symmetrically arranged on the positioning sleeve, it is convenient to carry out conflict walking in four directions, making it more stable during conflict walking.

[0017] The utility model is further configured that the positioning sleeve and the automatic rotator are connected by screws, and a sealing rubber pad is provided at the connection between the positioning sleeve and the automatic rotator.

[0018] Through the above technical solution: because the positioning sleeve and the automatic rotator are connected by screws, and a sealing rubber pad is provided at the connection between the positioning sleeve and the automatic rotator, it is easy to install and fix, and the fixation is more stable and firm.

[0019] The utility model is further configured that the salvage hook rope and the automatic rotator are rotatably connected via a thread.

[0020] Through the above technical solution: because the salvage hook rope and the automatic rotator are connected by threaded rotation, it is easy to install, disassemble and use.

[0021] The utility model is further configured that the salvage hooks are provided with four in total, and the salvage hooks are symmetrically arranged on the outer side of the automatic rotator.

[0022] Through the above technical solution: since there are four salvage hooks in total, and the salvage hooks are symmetrically arranged on the outside of the automatic rotator, it is convenient to rotate and hook external objects for salvage.

[0023] The beneficial effects of the utility model are:

[0024] 1. An automatic rotator structure is provided, which makes it easy to rotate the angle position for salvage. The rotating motor of the automatic rotator can be fixedly connected to the positioning sleeve shell by means of screws on the mounting disc, so that the rotating motor can be stably placed. When the output shaft of the rotating motor drives the coupling to rotate, the rotating motor can drive the clamp mounting shell to rotate through the coupling. When the clamp mounting shell rotates, the salvage angle of the salvage clamp inside the clamp mounting shell can be changed, and the salvage hook rope can be driven to rotate, so that external objects can be hooked for salvage during rotation.

[0025] 2. A salvage hook rope structure is provided, which makes it easy to hook external salvage objects for salvage. The assembly screw head of the salvage hook rope is threaded and rotatably connected to the automatic rotator, so that the assembly screw head is easy to install and place. This can drive the connecting end plate at the outer end of the assembly screw head to be placed. When the middle steel rope at the lower end of the connecting end plate swings, the middle steel rope can hook the external salvage objects through the outer hook head, which is convenient for hooking and salvaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a downhole instrument cable fishing tool proposed by the utility model;

[0027] Figure 2A schematic diagram of a fishing hook structure of a downhole instrument cable fishing tool proposed by the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of an automatic rotator of a downhole instrument cable fishing tool proposed by the utility model;

[0029] Figure 4 The utility model is a schematic diagram of the structure of a telescopic positioner of a downhole instrument cable fishing tool.

[0030] In the figure: 1. Positioning sleeve; 2. Lifting rope; 3. Upper shell; 4. Telescopic positioner; 41. Electric telescopic cylinder; 42. Travel motor; 43. Wheel shell; 44. Travel wheel; 5. Automatic rotator; 51. Rotating motor; 52. Mounting disc; 53. Clamp mounting shell; 6. Salvage hook rope; 61. Middle steel rope; 62. Outer hook head; 63. Connecting end disc; 64. Assembly screw head; 7. Salvage clamp. DETAILED DESCRIPTION

[0031] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent 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, and therefore cannot be understood as a limitation on this patent.

[0034] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0035] Reference Figure 1-Figure 4A downhole instrument cable salvage tool comprises a lifting rope 2, an upper shell 3 and a salvage clamp 7. The lifting rope 2 is installed and connected to the middle position of the upper end of the upper shell 3. A positioning sleeve 1 is arranged at the lower end of the upper shell 3. A telescopic positioner 4 is arranged on the inner side of the positioning sleeve 1. An automatic rotator 5 is arranged at the lower end of the positioning sleeve 1. A salvage clamp 7 is arranged at the lower end of the automatic rotator 5. A salvage hook rope 6 is arranged on the outer side of the salvage clamp 7 and located on the automatic rotator 5. The telescopic positioner 4, the automatic rotator 5 and the salvage clamp 7 are electrically connected to an external controller. When in use, the lifting rope 2 is installed and connected to the middle position of the upper end of the upper shell 3. A positioning sleeve 1 is arranged at the lower end of the positioning sleeve 1. A telescopic positioner 4 is arranged on the inner side of the positioning sleeve 1. An automatic rotator 5 is arranged at the lower end of the positioning sleeve 1. A salvage clamp 7 is arranged at the lower end of the automatic rotator 5. A salvage hook rope 6 is arranged on the outer side of the salvage clamp 7 and located on the automatic rotator 5. The telescopic positioner 4, the automatic rotator 5 and the salvage clamp 7 are electrically connected to an external controller. The lowering rope 2 is raised and lowered by an external traction device. When the lifting rope 2 is descending, the upper shell 3 and the positioning sleeve 1 are lowered. The positioning sleeve 1 can be in contact with the external pipe wall due to the telescopic positioner 4 on the inside, which is convenient for stable lifting. When moving to the salvage position, the automatic rotator 5 can drive the salvage clamp 7 to rotate an angle, and can drive the salvage hook rope 6 to rotate. When rotating, the salvage hook rope 6 can hook the salvage object, and the salvage clamp 7 can clamp the salvage object, so that when salvaging, it can be rotated according to the required angle for salvage.

[0036] Specifically, the salvage hook rope 6 includes an intermediate steel rope 61, an outer hook head 62, a connecting end plate 63 and an assembly screw head 64. The inner end of the connecting end plate 63 is provided with an assembly screw head 64, the lower end of the connecting end plate 63 is provided with an intermediate steel rope 61, the outer side of the intermediate steel rope 61 is provided with an outer hook head 62, the assembly screw head 64 is connected to the automatic rotator 5, and the assembly screw head 64 of the salvage hook rope 6 is threadedly connected to the automatic rotator 5, so that the assembly screw head 64 is easy to install and place, which can drive the connecting end plate 63 at the outer end of the assembly screw head 64 to be placed, and when the intermediate steel rope 61 at the lower end of the connecting end plate 63 swings, the intermediate steel rope 61 can hook the external salvage object through the outer hook head 62, which is convenient for hooking and salvaging.

[0037] Specifically, the automatic rotator 5 includes a rotating motor 51, a mounting disc 52 and a clamp mounting shell 53. The mounting disc 52 is arranged on the circumferential side of the rotating motor 51. The lower end of the output shaft of the rotating motor 51 is provided with a clamp mounting shell 53 through a coupling. The rotating motor 51 is connected to the positioning sleeve 1 through the mounting disc 52. The rotating motor 51 of the automatic rotator 5 can be fixedly connected to the positioning sleeve 1 through the screws on the mounting disc 52, so that the rotating motor 51 is easy to be placed stably. When the output shaft of the rotating motor 51 drives the coupling to rotate, the rotating motor 51 can drive the clamp mounting shell 53 to rotate through the coupling. When the clamp mounting shell 53 rotates, the salvage angle of the salvage clamp 7 inside the clamp mounting shell 53 can be changed, and the salvage hook rope 6 can be driven to rotate, so that external objects can be hooked for salvage during rotation.

[0038] Specifically, the telescopic positioner 4 includes an electric telescopic cylinder 41, a travel motor 42, a wheel housing 43 and a travel wheel 44. The outer end of the piston rod of the electric telescopic cylinder 41 is provided with a wheel housing 43, and the inner side of the wheel housing 43 is provided with a travel wheel 44. The outer end of the travel wheel 44 is located on the wheel housing 43 and a travel motor 42 is provided. The electric telescopic cylinder 41 is connected to the positioning sleeve 1. The electric telescopic cylinder 41 of the telescopic positioner 4 is connected to the positioning sleeve 1 by screws, so that the electric telescopic cylinder 41 can be placed stably. When the piston rod of the electric telescopic cylinder 41 is extended and retracted, the electric telescopic cylinder 41 can change the position of the wheel housing 43, which is convenient for adjustment and change of use according to the needs of the pipeline. Due to the travel motor 42 at the outer end of the wheel housing 43, the travel motor 42 can drive the travel wheel 44 to rotate and walk.

[0039] Specifically, there are four telescopic positioners 4 in total, and the telescopic positioners 4 are symmetrically arranged on the positioning sleeve 1, so that it is convenient to carry out conflict walking in four directions, making it more stable during conflict walking.

[0040] Specifically, the positioning sleeve 1 and the automatic rotator 5 are connected by screws, and a sealing rubber pad is provided at the connection between the positioning sleeve 1 and the automatic rotator 5, so as to facilitate installation and fixation, and the fixation is more stable and firm.

[0041] Specifically, the salvage hook 6 and the automatic rotator 5 are rotatably connected via a thread, which is convenient for installation and disassembly.

[0042] Specifically, there are four salvage hooks 6, and the salvage hooks 6 are symmetrically arranged on the outside of the automatic rotator 5, so that it is easy to rotate and hook external objects for salvage.

[0043] Working principle: When in use, the lifting rope 2 is lifted and lowered by an external traction device. When the lifting rope 2 is descending, the upper shell 3 and the positioning sleeve 1 are descending. The positioning sleeve 1 can be in contact with the external pipe wall due to the telescopic positioner 4 on the inside, which is convenient for stable lifting and lowering. When moving to the salvage position, the automatic rotator 5 can drive the salvage clamp 7 to rotate an angle, and can drive the salvage hook rope 6 to rotate. When rotating, the salvage hook rope 6 can hook the salvage object, and the salvage clamp 7 can clamp the salvage object, so that when salvaging, it can be rotated according to the required angle for salvage.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A downhole instrument cable fishing tool, comprising a lifting rope (2), an upper shell (3) and a fishing clamp (7), characterized in that: The lifting rope (2) is installed and connected at the middle position of the upper end of the upper shell (3); the lower end of the upper shell (3) is provided with a positioning sleeve (1); the inner side of the positioning sleeve (1) is provided with a telescopic positioner (4); the lower end of the positioning sleeve (1) is provided with an automatic rotator (5); the lower end of the automatic rotator (5) is provided with a salvage clamp (7); the outer side of the salvage clamp (7) is provided with a salvage hook rope (6) on the automatic rotator (5); the telescopic positioner (4), the automatic rotator (5) and the salvage clamp (7) are electrically connected to an external controller.

2. A downhole instrument cable fishing tool according to claim 1, characterized in that: The salvage hook rope (6) comprises a middle steel rope (61), an outer hook head (62), a connecting end plate (63) and an assembling screw head (64); the inner end of the connecting end plate (63) is provided with an assembling screw head (64); the lower end of the connecting end plate (63) is provided with a middle steel rope (61); the outer side of the middle steel rope (61) is provided with an outer hook head (62); and the assembling screw head (64) is connected to the automatic rotator (5).

3. A downhole instrument cable fishing tool according to claim 1, characterized in that: The automatic rotator (5) comprises a rotating motor (51), a mounting disc (52) and a clamp mounting housing (53); the mounting disc (52) is arranged on the circumference of the rotating motor (51); the lower end of the output shaft of the rotating motor (51) is provided with a clamp mounting housing (53) via a coupling; the rotating motor (51) is connected to the positioning sleeve (1) via the mounting disc (52).

4. A downhole instrument cable fishing tool according to claim 1, characterized in that: The telescopic positioner (4) comprises an electric telescopic cylinder (41), a travel motor (42), a wheel housing (43) and a travel wheel (44); the wheel housing (43) is arranged at the outer end of the piston rod of the electric telescopic cylinder (41); the travel wheel (44) is arranged on the inner side of the wheel housing (43); the travel motor (42) is arranged on the outer end of the travel wheel (44) located on the wheel housing (43); and the electric telescopic cylinder (41) is connected to the positioning sleeve (1).

5. A downhole instrument cable fishing tool according to claim 1, characterized in that: A total of four telescopic positioners (4) are provided, and the telescopic positioners (4) are symmetrically arranged on the positioning sleeve (1).

6. A downhole instrument cable fishing tool according to claim 1, characterized in that: The positioning sleeve (1) and the automatic rotator (5) are connected by screws, and a sealing rubber pad is provided at the connection between the positioning sleeve (1) and the automatic rotator (5).

7. A downhole instrument cable fishing tool according to claim 1, characterized in that: The fishing hook (6) and the automatic rotator (5) are rotatably connected via a thread.

8. A downhole instrument cable fishing tool according to claim 7, characterized in that: A total of four salvage hooks (6) are provided, and the salvage hooks (6) are symmetrically arranged on the outside of the automatic rotator (5).

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