Petroleum logging perforation cable shearing device

Abstract

The utility model relates to the technical field of cable hydraulic shearing devices, and discloses a petroleum well logging perforation cable shearing device which comprises a shearing frame, a shearing assembly is arranged in the shearing frame and comprises two lower fixing frames arranged in the shearing frame and close to the bottom face, an upper fixing frame is arranged above the lower fixing frames, and the upper fixing frame is connected with the shearing frame. A shearing base is fixed to the position, close to the middle, of the inner bottom face of the shearing frame. The lower fixing frames and the upper fixing frames are driven to get close to each other to clamp a cable, the movable seat is driven to press downwards and press the springback rod to slide in the springback cylinder and compress the first spring, and under the action of the rebound force of the first spring, the two sets of lower fixing frames and upper fixing frames are driven to get away from each other, so that the cable is stretched and straightened. After the cable is cut off, the lower fixing frame can be driven to be separated from the upper fixing frame so that the cable can be rapidly released, manual operation is not needed in the cable fixing and cutting process, and it is guaranteed that a well mouth is rapidly closed under the emergency situation.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable hydraulic shearing device technical field especially relates to a kind of petroleum well logging perforating cable shearing device. BACKGROUND

[0002] In the process of downhole testing or perforating operation is carried out in the layer with oil or gas production, so it is possible to implement operation in the process, formation oil and gas flow suddenly emerges wellhead, when this happens, wellhead needs to be closed immediately, to prevent blowout accident, but, because logging or perforating cable is still in downhole, wellhead cannot be closed, therefore, logging or perforating cable needs to be cut off in emergency, so as to ensure that wellhead is completely closed, to achieve the purpose of well control.

[0003] The existing one kind of petroleum well logging perforating cable hydraulic shearing device (announcement number:CN220955512U) at least has following disadvantages: the device needs to be fixed by cable line in use through wire clamp, but after shearing, cable line needs to be released at wellhead, otherwise, it still hinders wellhead to be closed, which leads to that work personnel needs to manually unscrew wire clamp bolt and dismount wire clamp, so that wellhead still cannot be quickly closed, for this, the utility model is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in prior art, and provides a kind of petroleum well logging perforating cable shearing device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of petroleum well logging perforating cable shearing device, including shearing frame, the inside of the shearing frame is provided with shearing assembly, shearing assembly includes two lower fixed frame being arranged in the inside of shearing frame and being close to bottom surface, upper fixed frame is arranged above lower fixed frame, shearing base is fixed to the inside bottom surface of shearing frame and is close to middle position, movable seat is arranged at the inside of shearing frame and is close to middle position, and shearing knife is fixed to the bottom surface of movable seat.

[0007] As a further scheme of the utility model, the two sides of the two upper fixed frames close to each other are rotatably connected with first connecting plates, the left and right sides of the movable seat are rotatably connected with second connecting plates, the two sides of the two first connecting plates close to each other are fixed with rebound cylinders, rebound rods are slidably inserted into the inside of the rebound cylinders, first springs are fixed between one end of the rebound rods and one side of the inside of the rebound cylinders, and the end of the rebound rods away from the rebound cylinders is fixed with one side of the second connecting plates.

[0008] As a further scheme of the utility model, the top surface of the shearing frame is fixed with a first hydraulic rod, one end of the first hydraulic rod extending through to the inside of the shearing frame and being fixed with the top surface of the movable seat, the top surface of the shearing frame is fixed with a mounting frame, the top surface of the shearing frame is slidably inserted with a compression frame, the bottom of the compression frame extends above the two upper fixed frames respectively, the top surface of the mounting frame is fixed with a second hydraulic rod, one end of the second hydraulic rod extending through to the bottom surface of the mounting frame and being fixed with the top surface of the compression frame.

[0009] As a further scheme of the utility model, the bottom of the compression frame is fixed with a first directional wheel at both ends, the roller of the first directional wheel abutting against the top surface of the upper fixed frame, the bottom surface of the lower fixed frame is fixed with a second directional wheel at four corners, the roller of the second directional wheel abutting against the inside bottom surface of the shearing frame.

[0010] As a further scheme of the utility model, the inside of the shearing frame is fixed with two first limiting rods, the lower fixed frame and the outer wall of the first limiting rod are slidably arranged, the inside bottom surface of the shearing frame is fixed with two second limiting rods, the movable seat and the outer wall of the second limiting rod are slidably inserted, the two sides of the lower fixed frame and the upper fixed frame close to each other are fixed with a support cylinder and a support rod respectively, the support rod and the inside of the support cylinder are slidably inserted, the bottom end of the support rod and the inside bottom surface of the support cylinder are fixed with a second spring.

[0011] As a further scheme of the utility model, the inner wall of the lower fixed frame and the upper fixed frame is fixed with a first rubber pad and a second rubber pad respectively.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] When shearing, the lower fixed frame and the upper fixed frame are driven to be close to each other to clamp the cable, at this time, the movable seat is driven to press down and drive the rebound rod to slide in the inside of the rebound cylinder and compress the first spring, under the rebound force of the first spring, the two groups of lower fixed frame and upper fixed frame are driven to be far away from each other, thereby stretching and straightening the cable, until the shearing cutter cuts off the cable, after cutting off, the lower fixed frame and the upper fixed frame can be driven to separate and thereby quickly release the cable, the process of fixing and cutting off the cable does not need manual operation, the shearing speed of the cable is accelerated, and the wellhead is quickly closed in an emergency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A three-dimensional structure schematic view of the petroleum well logging perforation cable shearing device is provided for the utility model;

[0015] Figure 2 A shearing frame three-dimensional sectional structure schematic view of the petroleum well logging perforation cable shearing device is provided for the utility model;

[0016] Figure 3The utility model provides a kind of petroleum well logging perforation cable shearing device's lower fixed frame and upper fixed frame place three-dimensional structure schematic diagram;

[0017] Figure 4 For Figure 3 Partial three-dimensional structure enlarged schematic view of A.

[0018] In the drawing: 1, shearing frame;2, lower fixed frame;201, upper fixed frame;202, shearing base;203, movable seat;204, shearing knife;205, first connecting plate;206, second connecting plate;207, rebound cylinder;208, rebound rod;209, first hydraulic rod;210, first spring;211, mounting frame;212, compression frame;213, second hydraulic rod;3, first directional wheel;301, second directional wheel;4, first limit rod;401, second limit rod;402, support cylinder;403, support rod;404, second spring;5, first rubber pad;501, second rubber pad. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0020] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium;It can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0022] For example, Figures 1-4As shown, a kind of oil well logging perforating cable shearing device, including shear frame 1, the inside of the shear frame 1 is provided with shear assembly, shear assembly includes two lower fixed frame 2 being arranged in shear frame 1 inside near bottom surface, upper fixed frame 201 is arranged above lower fixed frame 2, shear base 202 is fixed to the inside bottom surface of shear frame 1 near middle position, movable seat 203 is arranged in shear frame 1 near middle position, shear cutter 204 is fixed to the bottom surface of movable seat 203.

[0023] As Figures 2-4 As shown in the embodiment, the two upper fixed frames 201 are rotatably connected with first connecting plates 205 on their two sides close to each other, the movable seat 203 is rotatably connected with second connecting plates 206 on its left and right sides, the two first connecting plates 205 are fixed with rebound cylinders 207 on their two sides close to each other, rebound rods 208 are slidably inserted into the rebound cylinders 207, first springs 210 are fixed between one end of the rebound rods 208 and one side of the interior of the rebound cylinders 207, the other end of the rebound rods 208 away from the rebound cylinders 207 is fixed with one side of the second connecting plates 206, by driving the compression frame 212 to move downward, the compression frame 212 is pressed against the upper fixed frame 201, so that the upper fixed frame 201 is close to the lower fixed frame 2, and the cable is tightly fixed, the movable seat 203 is driven to move downward, because the first connecting plates 205 are rotatably connected with the upper fixed frame 201, and the second connecting plates 206 are rotatably connected with the movable seat 203, when the movable seat 203 moves downward, the second connecting plates 206 and the first connecting plates 205 will rotate synchronously, and the distance between the second connecting plates 206 and the first connecting plates 205 is shortened, so that the rebound rods 208 slide in the rebound cylinders 207 and compress the first springs 210, under the rebound force of the first springs 210, the second connecting plates 206 and the first connecting plates 205 are pushed away from each other, realizing the mutual separation of the two groups of upper fixed frames 201 to the lower fixed frame 2, because the cable is clamped and fixed by the two groups of upper fixed frames 201 to the lower fixed frame 2, the stretching of the sheared part of the cable is realized, at this time, with the movable seat 203 moving downward, the shear cutter 204 moves downward synchronously and cooperates with the shear base 202 to shear the cable.

[0024] As Figures 2-4As shown in the drawings, in this embodiment, the top surface of the shearing frame 1 is fixed with a first hydraulic rod 209, one end of the telescopic rod of the first hydraulic rod 209 extends through to the inside of the shearing frame 1 and is fixed with the top surface of the movable seat 203, the top surface of the shearing frame 1 is fixed with a mounting frame 211, the top surface of the shearing frame 1 is slidingly inserted with a pressing frame 212, the bottom of the pressing frame 212 extends above the two upper fixed frames 201 respectively, the top surface of the mounting frame 211 is fixed with a second hydraulic rod 213, one end of the telescopic rod of the second hydraulic rod 213 extends through to the bottom surface of the mounting frame 211 and is fixed with the top surface of the pressing frame 212, by starting the second hydraulic rod 213, the pressing frame 212 can be driven to move up and down and drive the upper fixed frame 201 to move close to the lower fixed frame 2 to clamp and fix the cable, by the first hydraulic rod 209, the movable seat 203 can be driven to move downward to stretch and shear the cable.

[0025] As shown in the drawings, Figures 2-4 In this embodiment, the bottom of the pressing frame 212 is fixed with a first directional wheel 3, the roller of the first directional wheel 3 abuts against the top surface of the upper fixed frame 201, the bottom surface of the lower fixed frame 2 is fixed with a second directional wheel 301 at the four corners, the roller of the second directional wheel 301 abuts against the inside bottom surface of the shearing frame 1, by the first directional wheel 3 instead of the pressing frame 212 abutting against the top surface of the upper fixed frame 201, when the cable is stretched and the upper fixed frame 201 moves, the first directional wheel 3 rolls with the top surface of the upper fixed frame 201, thereby reducing the friction of the pressing frame 212, by the second directional wheel 301, the lower fixed frame 2 can be supported, when the cable is stretched and the lower fixed frame 2 moves, thereby reducing the friction of the lower fixed frame 2 to the shearing frame 1.

[0026] As shown in the drawings, Figures 2-4 In this embodiment, the inside of the shearing frame 1 is fixed with two first limiting rods 4, the lower fixed frame 2 is slidingly arranged with the outer wall of the first limiting rod 4, the inside bottom surface of the shearing frame 1 is fixed with two second limiting rods 401, the movable seat 203 is slidingly inserted with the outer wall of the second limiting rod 401, the two sides of the lower fixed frame 2 close to the upper fixed frame 201 are respectively fixed with a support cylinder 402 and a support rod 403, the support rod 403 is slidingly inserted with the inside of the support cylinder 402, the bottom end of the support rod 403 is fixed with a second spring 404 between the inside bottom surface of the support cylinder 402, by the first limiting rod 4, the lower fixed frame 2 can be transversely moved to limit and support, by the second limiting rod 401, the movable seat 203 can be moved up and down to limit and support, by the sliding insertion of the support rod 403 and the inside of the support cylinder 402, the lower fixed frame 2 and the upper fixed frame 201 can be moved to limit and support, the second spring 404 can quickly separate the lower fixed frame 2 and the upper fixed frame 201 and release the cable when the pressing frame 212 moves away from the upper fixed frame 201.

[0027] AsFigures 2-4 As shown, in the embodiment, the inner walls of the lower fixing frame 2 and the upper fixing frame 201 are respectively fixed with the first rubber pad 5 and the second rubber pad 501, the first rubber pad 5 and the second rubber pad 501 are used to replace the lower fixing frame 2 and the upper fixing frame 201 to adhere to the cable, and under the action of the large friction factor of the first rubber pad 5 and the second rubber pad 501, the cable can be better clamped and fixed.

[0028] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: in use, the second hydraulic rod 213 is started to drive the pressing frame 212 to move downward, thereby driving the first directional wheel 3 at both ends of the bottom of the pressing frame 212 to press the upper fixing frame 201, so that the upper fixing frame 201 is close to the lower fixing frame 2, and the cable is pressed and fixed, in this process, the support rod 403 slides in the inside of the support cylinder 402 and compresses the second spring 404, then the first hydraulic rod 209 is started to drive the movable seat 203 to move downward, because the first connecting plate 205 is rotationally connected with the upper fixing frame 201, and the second connecting plate 206 is rotationally connected with the movable seat 203, when the movable seat 203 moves downward, the second connecting plate 206 will rotate synchronously with the first connecting plate 205, and the distance between the second connecting plate 206 and the first connecting plate 205 is shortened, so that the rebound rod 208 slides in the inside of the rebound cylinder 207 and compresses the first spring 210, under the rebound force of the first spring 210, the second connecting plate 206 and the first connecting plate 205 are pushed away from each other, realizing the mutual separation of the two groups of upper fixing frames 201 and the lower fixing frame 2, because the cable is clamped and fixed by the two groups of upper fixing frames 201 and the lower fixing frame 2, the stretching of the sheared part of the cable is realized, at this time, with the movable seat 203 moving downward, the shearing cutter 204 moves downward synchronously and cooperates with the shearing base 202 to shear the cable, after shearing, the second hydraulic rod 213 is started to drive the pressing frame 212 and the first directional wheel 3 to move away from the upper fixing frame 201, at this time, the second spring 404 rebounds quickly and separates the upper fixing frame 201 from the lower fixing frame 2 to loosen the cable, completing the emergency shearing work, the first directional wheel 3 replaces the pressing frame 212 and the upper fixing frame 201 to abut against the top surface, when the cable is stretched and the upper fixing frame 201 moves, the first directional wheel 3 rolls on the top surface of the upper fixing frame 201, thereby reducing the friction of the pressing frame 212, the second directional wheel 301 can support the lower fixing frame 2, when the cable is stretched and the lower fixing frame 2 moves, thereby reducing the friction of the lower fixing frame 2 on the shearing frame 1, the first limiting rod 4 can limit and support the transverse movement of the lower fixing frame 2, the second limiting rod 401 can limit and support the upward and downward movement of the movable seat 203, the support rod 403 and the support cylinder 402 are slidably inserted in the inside, thereby limiting and supporting the mutual movement of the lower fixing frame 2 and the upper fixing frame 201, the second spring 404 can quickly separate the lower fixing frame 2 from the upper fixing frame 201 to loosen the cable when the pressing frame 212 moves away from the upper fixing frame 201, the first rubber pad 5 and the second rubber pad 501 replace the lower fixing frame 2 and the upper fixing frame 201 to abut against the cable, under the action of the large friction factor of the first rubber pad 5 and the second rubber pad 501, the cable can be better clamped and fixed.

[0029] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A petroleum well logging perforation cable shearing device comprising a shearing frame (1), characterized in that, The inside of the shearing frame (1) is provided with a shearing assembly, the shearing assembly comprises two lower fixed frames (2) arranged inside the shearing frame (1) close to the bottom surface, the upper fixed frames (201) are arranged above the lower fixed frames (2), the shearing base (202) is fixed to the inside bottom surface of the shearing frame (1) close to the middle position, the movable seat (203) is arranged inside the shearing frame (1) close to the middle position, and the shearing knife (204) is fixed to the bottom surface of the movable seat (203).

2. The cable shearing device of claim 1, wherein, The two upper fixed frames (201) are rotatably connected with the first connecting plates (205) on the two sides close to each other, the movable seat (203) is rotatably connected with the second connecting plates (206) on the left and right sides, the two first connecting plates (205) are fixed with the rebound cylinders (207) on the two sides close to each other, the rebound cylinders (207) are slidably inserted with the rebound rods (208), the first springs (210) are fixed between one end of the rebound rod (208) and one side of the inside of the rebound cylinder (207), and the end, away from the rebound cylinder (207), of the rebound rod (208) is fixed with one side of the second connecting plate (206).

3. The cable shearing device of claim 2, wherein, The top surface of the shearing frame (1) is fixed with the first hydraulic rod (209), one end of the telescopic rod of the first hydraulic rod (209) extends through the inside of the shearing frame (1) and is fixed with the top surface of the movable seat (203), the top surface of the shearing frame (1) is fixed with the mounting frame (211), the top surface of the shearing frame (1) is slidably inserted with the pressing frame (212), the bottom ends of the pressing frame (212) extend above the two upper fixed frames (201) respectively, the top surface of the mounting frame (211) is fixed with the second hydraulic rod (213), and one end of the telescopic rod of the second hydraulic rod (213) extends through the bottom surface of the mounting frame (211) and is fixed with the top surface of the pressing frame (212).

4. The apparatus of claim 3 wherein, The bottom ends of the pressing frame (212) are fixed with the first directional wheels (3), the rollers of the first directional wheels (3) abut against the top surface of the upper fixed frame (201), and the bottom surface of the lower fixed frame (2) is fixed with the second directional wheels (301) at the four corners, the rollers of the second directional wheels (301) abut against the inside bottom surface of the shearing frame (1).

5. The apparatus of claim 4 wherein, The inside of the shearing frame (1) is fixed with the two first limiting rods (4), the lower fixed frame (2) and the outer wall of the first limiting rod (4) are slidably arranged, the inside bottom surface of the shearing frame (1) is fixed with the two second limiting rods (401), the movable seat (203) and the outer wall of the second limiting rod (401) are slidably inserted, the sides close to each other of the lower fixed frame (2) and the upper fixed frame (201) are respectively fixed with the support cylinder (402) and the support rod (403), the support rod (403) and the inside of the support cylinder (402) are slidably inserted, and the bottom end of the support rod (403) and the inside bottom surface of the support cylinder (402) are fixed with the second spring (404).

6. The cable shearing device of claim 5, wherein, The inner walls of the lower fixed frame (2) and the upper fixed frame (201) are respectively fixed with the first rubber pad (5) and the second rubber pad (501).

Images