High-pressure oil pipe tapping device

Abstract

The utility model belongs to the technical field of oil extraction machinery, and particularly relates to a high-pressure oil pipe tapping device. The device specifically comprises an upper gland, a lower gland and a connecting column, the bottom face of the upper gland is a first oil pipe contact face, the middle of the upper gland is in a concave arc shape, and fixing through holes A are formed in the two sides of the upper gland respectively; the top face of the lower gland is a second contact face of the oil pipe, the middle of the lower gland is in a concave arc shape, fixing through holes B are formed in the two sides of the lower gland of the oil pipe respectively, and the fixing through holes A and the fixing through holes B are in one-to-one correspondence in position and locked so that the oil pipe can be clamped and fixed. A knife rest is arranged in the middle inside the upper gland, and the bottom surface of the knife rest is a third contact surface of the oil pipe, is in a concave arc shape and corresponds to the arc shape of the outer wall of the perforated oil pipe; the tool rest is connected with a connecting column through a bearing, threads are arranged on the outer side of the connecting column, the bottom end of the connecting column is in threaded connection with the top of the upper gland, and the tapping tool penetrates through the hollow connecting column and the tool rest and then corresponds to an oil pipe tapping position. The clamping device has the advantages that the oil pipe can be clamped, and it is ensured that the tapping position does not deviate.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil production machinery, and particularly relates to a high-pressure oil pipe hole opening device. Background Art

[0002] In the oil production work, the oil gathering pipeline sometimes has the problem of corrosion, perforation and oil leakage, and the damaged pipeline needs to be repaired and replaced. There is often high-pressure oil and gas in the oil gathering pipeline. If the pipeline is welded under pressure or the hole is opened with fire, it is easy to cause a fire. In the prior art, when welding and repairing the oil gathering pipeline, the well is stopped and the oil delivery end is closed to release the pressure of the pipeline. After the pressure is released, the damaged part of the pipeline is opened or isolated by gas cutting.

[0003] Patent publication number: CN 204276971 U, discloses a tool for opening and relieving pressure of an oil collecting pipeline, comprising a valve needle, a pressure cap, a valve body and a valve core. A valve needle handle and a twist drill bit are respectively arranged at both ends of the valve needle, and then the pressure cap, valve body and valve core which are threadedly connected in sequence are put on the valve needle. During the hole opening operation, after aligning the oil collecting pipeline, the valve body is rotated to retract the valve core and expose the twist drill bit. When the twist drill bit is completely exposed, the valve needle handle is rotated to perform the drilling operation on the oil collecting pipeline.

[0004] The resulting technical problem is that when drilling a hole in the oil pipe, the oil pipe needs to be fixed to ensure that it does not deviate during the drilling process.

[0005] How to provide an oil pipe hole-opening tool that integrates a hole-opening device and a fixing device in a limited space environment is an urgent problem to be solved by the personnel in this field. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a high-pressure oil pipe hole opening device.

[0007] The technical scheme of the utility model is: a high-pressure oil pipe opening device, comprising an upper gland, a lower gland and a connecting column, the middle position of the top surface of the upper gland is higher than the two sides, the bottom surface of the upper gland is the first contact surface of the oil pipe, the middle position of the first contact surface of the oil pipe is a concave arc shape, and fixed through holes A are respectively provided on both sides of the upper gland; the top surface of the lower gland is the second contact surface of the oil pipe, the middle position of the second contact surface of the oil pipe is a concave arc shape, and fixed through holes B are respectively provided on both sides of the lower gland, the two fixed through holes A correspond to the two fixed through holes B in position one by one, and the oil pipe is clamped and fixed by locking the fixed through holes A and the fixed through holes B;

[0008] A tool holder is provided in the middle position inside the upper pressure cover, and the bottom surface of the tool holder is the third contact surface of the oil pipe. The third contact surface of the oil pipe is in a concave arc shape and corresponds to the arc shape of the outer wall of the oil pipe to be drilled; the tool holder is connected to the connecting column through a pressure bearing, and a thread is arranged on the outer side of the connecting column. The top end of the connecting column is connected to the valve body, and the bottom end of the connecting column is threadedly connected to the top of the upper pressure cover. The drilling tool passes through the hollow connecting column and the tool holder, and the position of the corresponding oil pipe hole is reached.

[0009] Furthermore, the tool holder is divided into an upper part and a lower part. The upper part and the lower part of the tool holder are both concentric cylinders. The upper part of the tool holder is a cylinder with a smaller diameter. The upper part of the tool holder is embedded in the connecting column through a pressure bearing.

[0010] Furthermore, an adjusting nut is provided on the connecting column, and the adjusting nut is connected to the connecting column by a thread and is arranged on the top surface of the upper pressure cover; by turning the adjusting nut up and down, the position of the connecting rod and the tool holder can be adjusted up and down, and the connecting column can be limited and fixed after the adjusting nut is tightened.

[0011] Furthermore, threads are provided in the fixing through hole A and the fixing through hole B. After the fixing through hole A and the fixing through hole B are connected by bolts, nuts are tightened to fix them.

[0012] The beneficial effects of the utility model are as follows: the utility model facilitates contact with the oil pipe and defines the opening position through the recessed arc-shaped first contact surface and the second contact surface; after locking by setting corresponding fixed through holes A and fixed through holes B on the upper pressure cover and the lower pressure cover, the oil pipe can be clamped to ensure that the opening position does not shift and the opening position is accurate.

[0013] The utility model is also provided with a tool holder. During the hole drilling operation, the connecting column thread is unscrewed to squeeze the tool holder against the outer wall of the oil pipe. The third contact surface of the oil pipe on the tool holder is also set to a concave arc shape and corresponds to the shape of the outer wall of the oil pipe to be drilled, which can ensure that the tool holder is firmly fixed on the oil pipe, further circle the hole drilling position, and ensure the accuracy of the hole drilling position. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the tool holder structure of the utility model;

[0016] In the figure:

[0017] 1. Upper gland 2. Lower gland 3. Connecting column

[0018] 4. Valve body 5. Adjusting nut 6. Tool holder

[0019] 7. Pressure bearing lower plate 1-1, first contact surface 1-2, left bolt

[0020] 2-1, second contact surface 2-2, right bolt 6-1, third contact surface DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1

[0023] A high-pressure oil pipe hole opening device comprises an upper pressure cover 1, a lower pressure cover 2 and a connecting column 3, wherein the middle position of the top surface of the upper pressure cover is higher than both sides, the bottom surface of the upper pressure cover 1 is a first contact surface 1-1 of the oil pipe, the middle position of the first contact surface 1-1 of the oil pipe is a concave arc shape, and fixed through holes A are respectively provided on both sides of the upper pressure cover 1; the top surface of the lower pressure cover 2 is a second contact surface 2-1 of the oil pipe, the middle position of the second contact surface 2-1 of the oil pipe is a concave arc shape, and fixed through holes B are respectively provided on both sides of the lower pressure cover 2 of the oil pipe, the two fixed through holes A correspond to the two fixed through holes B in position one by one, and threads are provided in the fixed through holes A and the fixed through holes B, wherein one group of the fixed through holes A and the fixed through holes B are tightened and fixed by a left bolt, and the other group of the fixed through holes A and the fixed through holes B are tightened and fixed by a right bolt, and the oil pipe can be clamped and fixed by locking the fixed through holes A and the fixed through holes B.

[0024] A tool holder 6 is provided in the middle of the upper pressure cover 1. The tool holder 6 is divided into an upper part and a lower part. The upper part and the lower part of the tool holder 6 are both concentric cylindrical. The upper part of the tool holder 6 is a cylindrical shape with a smaller diameter, and the lower part of the tool holder 6 is a cylindrical shape with a larger diameter.

[0025] The upper part of the tool holder 6 is embedded in the connecting column 3 through a pressure bearing, wherein an upper pressure bearing piece is arranged in the connecting column 3, and a lower pressure bearing piece is arranged between the upper and lower parts of the tool holder 6. The tool holder 6 is connected to the connecting column 3 through the upper pressure bearing piece and the lower pressure bearing piece 7. A thread is arranged on the outer side of the connecting column 3, the top of the connecting column 3 is connected to the valve body 4, and the bottom of the connecting column 3 is threadedly connected to the top of the upper gland 1. The hole-opening tool is a twist drill bit, and the drill rod passes through the hollow connecting column and the tool holder to the position of the corresponding oil pipe hole.

[0026] The setting of the pressure bearing ensures that when the connecting column 3 pushes the tool holder 6, the tool holder 6 does not rotate with the connecting column 3, and the arc shape of the third contact surface 6-1 always corresponds to the arc shape of the outer wall of the oil pipe.

[0027] The bottom surface of the tool holder 5 is the third contact surface 6 - 1 of the oil pipe. The third contact surface 6 - 1 of the oil pipe is in a concave arc shape and corresponds to the arc shape of the outer wall of the oil pipe to be drilled.

[0028] Among them, an adjusting nut 5 is also provided on the connecting column 3, and the adjusting nut 5 is connected to the connecting column 3 by a thread and is placed on the top surface of the upper pressure cover 1; when the hole opening work is carried out, the upper and lower positions of the connecting column 3 can be adjusted by screwing the adjusting nut 5, so as to adjust the position of the tool holder 6 connected to the connecting column 3. When the connecting column 3 is screwed out, the tool holder 6 is squeezed on the outer wall of the oil pipe, and the third contact surface 6-1 of the oil pipe on the tool holder 6 corresponds to the shape of the outer wall of the oil pipe of the hole, which can ensure that the tool holder 6 is firmly fixed on the oil pipe and accurately circle the hole opening position.

[0029] Among them, during the drilling work, the drill bit drills a hole in the oil pipe. When the drill bit drills through the oil pipe, the tool holder 5 squeezes into the inside of the oil pipe to seal the high-pressure oil and gas in the pipe to ensure that the pressure is not easy to overflow. After the hole is drilled, the drill bit is pulled out from the connecting column 3, and the valve body 4 is connected to the connecting column 3, and then the oil collection pipeline is repaired.

[0030] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A high-pressure oil pipe hole opening device, characterized in that: It includes an upper gland, a lower gland and a connecting column, wherein the middle position of the upper gland top surface is higher than the two sides, the upper gland bottom surface is the first contact surface of the oil pipe, the middle position of the first contact surface of the oil pipe is a concave arc shape, and the two sides of the upper gland are respectively provided with fixed through holes A; the top surface of the lower gland is the second contact surface of the oil pipe, the middle position of the second contact surface of the oil pipe is a concave arc shape, and the two sides of the lower gland are respectively provided with fixed through holes B, the two fixed through holes A correspond to the two fixed through holes B in position one by one, and the oil pipe is clamped and fixed by locking the fixed through holes A and the fixed through holes B; A tool holder is provided in the middle position inside the upper pressure cover, and the bottom surface of the tool holder is the third contact surface of the oil pipe. The third contact surface of the oil pipe is in a concave arc shape and corresponds to the arc of the outer wall of the oil pipe to be drilled; the tool holder is connected to the connecting column through a pressure bearing, and a thread is arranged on the outer side of the connecting column. The top end of the connecting column is connected to the valve body, and the bottom end of the connecting column is threadedly connected to the top of the upper pressure cover. The drilling tool passes through the hollow connecting column and the tool holder, and the position of the corresponding oil pipe hole is reached.

2. A high-pressure oil pipe hole opening device according to claim 1, characterized in that: The tool holder is divided into an upper part and a lower part. The upper part and the lower part of the tool holder are both concentric cylinders. The upper part of the tool holder is a cylinder with a smaller diameter. The upper part of the tool holder is embedded in the connecting column through a pressure bearing.

3. The high-pressure oil pipe hole opening device according to claim 1, characterized in that: The connecting column is also provided with an adjusting nut, which is connected to the connecting column through threads and is arranged on the top surface of the upper pressure cover.

4. The high-pressure oil pipe hole opening device according to claim 1, characterized in that: The fixing through hole A and the fixing through hole B are both provided with threads. The fixing through hole A and the fixing through hole B are connected by bolts and then tightened with nuts.

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