Blowout prevention device for perforation operation

Abstract

The utility model relates to the technical field of blowout prevention devices, and discloses a perforation operation blowout prevention device which comprises a fixing seat, a first round through hole is formed in the top face of the fixing seat, a drilling pipe is movably connected into the first round through hole in a sleeved mode, and a main supporting pipe is arranged in the fixing seat. Through mutual cooperation and use of the fixing seat, the drilling pipe, the main supporting pipe, the side pipe, the plugging ball, the first fixing ring, the sealing ring and the first pushing column, the effect of preventing wellhead oil injection can be achieved; through remote control of a remote controller, a first pushing column, a second pushing column, a spring and the like can quickly respond and act in time to push a plugging ball to enter a main supporting pipe, the top of the interior of the main supporting pipe is sealed to prevent oil injection, the plugging action speed is high, the number of driving instruments of the whole device is small, the cost is low, and meanwhile the service life of the device is prolonged. And secondary sealing is conducted on the top face of the main supporting pipe by rotating the rotating cover, safety is enhanced, the blowout prevention effect is guaranteed, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blowout prevention devices, in particular to a blowout prevention device for perforating operations. Background Art

[0002] Perforating operation: When completing an oil well drilling, it is an operation to open the oil layer with a perforating gun. Using the principle of high-efficiency shaped charge blasting, the perforating gun is sent to the position of the casing to be perforated by a cable, and the perforating bullet is detonated by an electric detonator. For the logging operation of high-pressure oil and gas wells in the oil field, especially during the perforating operation of drilling input, the oil well is in an open state. Once a blowout occurs and the wellhead cannot be closed in time, oil spraying will occur. The blowout prevention facility is an important equipment during the perforating operation and plays an important role in case of a blowout.

[0003] An existing blowout prevention device for perforating operations (Publication No.: CN219492258U) has at least the following drawbacks: In the above patent, through the first motor set, the sealing cylinder cap is rotated to directly above the fixed seat. After the hydraulic lifting column is lowered and the sealing plug is inserted into the drilling pipe of the blowout well, the second motor is started to thread the threaded rotating shaft onto the sealing thread of the drilling pipe to block the entire drilling pipe. However, the above method requires the cooperation of more driving machinery, and the blowout prevention device is not often used, making the overall cost of the device relatively high. Moreover, the operation of related instruments requires a certain amount of time, resulting in the need to improve the blocking speed. Therefore, there is an urgent need for a blowout prevention device for perforating operations to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the drawbacks existing in the prior art and propose a blowout prevention device for perforating operations.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A blowout prevention device for perforating operations, including a fixed seat. A first circular through hole is opened on the top surface of the fixed seat. A drilling pipe is movably sleeved inside the first circular through hole. A main support pipe is arranged inside the fixed seat. A second circular through hole is opened on the outer circular wall surface of the main support pipe. A side pipe is fixedly installed on the outer circular wall surface of the main support pipe. The internal space of the main support pipe is communicated with the internal space of the side pipe. It further includes a blowout prevention component for preventing oil spraying, and the blowout prevention component is arranged on the inner circular wall surface of the side pipe

[0007] As a further solution of the present utility model, the blowout prevention assembly further includes: a plugging ball, the plugging ball is movably sleeved on the inner circumferential wall surface of the side pipe, a first fixing ring is fixedly sleeved on the inner circumferential wall surface of the drilling pipe, a sealing ring is fixedly installed on the bottom surface of the first fixing ring, a first pushing column is movably sleeved on the inner circumferential wall surface of the side pipe, a second circular through hole is opened at one end of the side pipe, a second pushing column is movably sleeved inside the second circular through hole, the second pushing column is fixedly installed with the first pushing column, a spring is movably sleeved on the outer circumferential wall surface of the second pushing column, a first limiting groove is opened on the outer circumferential wall surface of the second pushing column, a fixing plate is fixedly installed at one end of the side pipe, a second limiting groove is opened on the top surface of the fixing plate, a fixing hole is opened on the inner bottom surface of the second limiting groove, a limiting block is movably sleeved inside the fixing hole, the limiting block is movably sleeved with the first limiting groove, a push-pull electromagnet is fixedly sleeved on the inner circumferential wall surface of the fixing hole, a telescopic shaft of the push-pull electromagnet is fixedly installed with the limiting block, a PLC controller is arranged on one side of the fixed seat, the push-pull electromagnet is electrically connected with the PLC controller, a pull ring is fixedly installed on the top surface of the telescopic shaft of the push-pull electromagnet, and a limiting column is fixedly installed at one end of the second pushing column.

[0008] As a further solution of the present utility model, a third circular through hole is opened on the top surface of the main support pipe, a rotating cover is movably sleeved on the inner circumferential wall surface of the third circular through hole, a limiting hole is opened on the top surface of the main support pipe, an annular groove is opened on the top surface of the main support pipe, and a first sealing ring is fixedly sleeved inside the annular groove.

[0009] As a further solution of the present utility model, a threaded pipe is fixedly installed on the top surface of the fixed seat, the threaded pipe is threadedly connected with the main support pipe, a sealing gasket is fixedly installed on the top surface of the threaded pipe, and a second fixing ring is fixedly sleeved on the inner circumferential wall surface of the main support pipe.

[0010] As a further solution of the present utility model, a plurality of threaded holes are opened on the top surface of the fixed seat, and bolts are threadedly connected to the inner circumferential wall surfaces of the threaded holes.

[0011] As a further solution of the present utility model, a third limiting groove is opened on the outer circumferential wall surface of the first pushing column, and a second sealing ring is fixedly sleeved on the inner circumferential wall surface of the third limiting groove.

[0012] As a further solution of the present utility model, two U-shaped plates are fixedly installed at one end of the plugging ball, and a protective bin is movably sleeved inside the U-shaped plates.

[0013] As a further solution of the present utility model, an arc-shaped groove is opened at one end of the first pushing column.

[0014] As a further solution of the present utility model, an electrical cabinet is fixedly installed on one side of the fixed seat, the PLC controller is fixedly installed on one side inside the electrical cabinet, a storage battery is fixedly installed on one side inside the electrical cabinet, the storage battery is electrically connected to the PLC controller, and a remote controller is arranged inside the electrical cabinet.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] Through the mutual cooperation of the set fixed seat, drilling pipe, main support pipe, side pipe, plugging ball, first fixing ring, sealing ring and first pushing column, the effect of preventing oil spraying at the wellhead can be achieved, so that the first pushing column, second pushing column, spring, etc. can be remotely controlled by the remote controller to quickly respond and act in a timely manner to push the plugging ball into the inside of the main support pipe, seal the top inside the main support pipe to prevent oil spraying. The plugging action speed is relatively fast, and the overall device has fewer driving instruments and lower costs. At the same time, by rotating the rotating cover, the top surface of the main support pipe is secondarily sealed to strengthen a safety measure, ensuring the anti-spray effect, which is relatively practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a blowout prevention device for perforation operations proposed by the present utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the fixed seat of a blowout prevention device for perforation operations proposed by the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the sealing ring of a blowout prevention device for perforation operations proposed by the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the drilling pipe of a blowout prevention device for perforation operations proposed by the present utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the drilling pipe of a blowout prevention device for perforation operations proposed by the present utility model;

[0022] Figure 6 It is Figure 4 a partial structural schematic diagram of A in

[0023] Figure 7 It is Figure 5 a partial structural schematic diagram of B in

[0024] Figure 8 It is a schematic diagram of the structure of the second fixing ring of a blowout prevention device for perforation operations proposed by the present utility model;

[0025] Figure 9Schematic diagram of the U-shaped plate structure of a blowout prevention device for perforation operations proposed by the present utility model.

[0026] In the figure: 1, fixed seat; 2, drilling pipe; 3, main support pipe; 4, side pipe; 5, plugging ball; 6, first fixing ring; 7, sealing ring; 8, first pushing column; 9, second pushing column; 10, spring; 11, first limiting groove; 12, fixing plate; 13, fixing hole; 14, second limiting groove; 15, push-pull electromagnet; 16, limiting block; 17, pull ring; 18, rotating cover; 19, limiting hole; 20, first sealing ring; 21, second sealing ring; 22, threaded pipe; 23, sealing washer; 24, second fixing ring; 25, bolt; 26, protection chamber; 27, limiting column; 28, third limiting groove; 29, arc groove; 30, battery; 31, remote controller; 32, U-shaped plate. Specific embodiments

[0027] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", 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, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Refer to Figures 1-9, a blowout prevention device for perforation operations, comprising: a fixed seat 1, a first circular through hole is provided on the top surface of the fixed seat 1, a drilling pipe 2 is movably sleeved inside the first circular through hole, a main support pipe 3 is arranged inside the fixed seat 1, a second circular through hole is provided on the outer wall surface of the main support pipe 3, a side pipe 4 is fixedly installed on the outer wall surface of the main support pipe 3, the internal space of the main support pipe 3 is communicated with the internal space of the side pipe 4, and further includes a blowout prevention component for preventing oil spraying, the blowout prevention component is arranged on the inner wall surface of the side pipe 4, and the blowout prevention component includes: a plugging ball 5, the plugging ball 5 is movably sleeved on the inner wall surface of the side pipe 4, a first fixing ring 6 is fixedly sleeved on the inner wall surface of the drilling pipe 2, a sealing ring 7 is fixedly installed on the bottom surface of the first fixing ring 6, a first push column 8 is movably sleeved on the inner wall surface of the side pipe 4, a second circular through hole is provided at one end of the side pipe 4, a second push column 9 is movably sleeved inside the second circular through hole, the second push column 9 is fixedly installed with the first push column 8, a spring 10 is movably sleeved on the outer wall surface of the second push column 9, a first limiting groove 11 is provided on the outer wall surface of the second push column 9, a fixing plate 12 is fixedly installed at one end of the side pipe 4, a second limiting groove 14 is provided on the top surface of the fixing plate 12, a fixing hole 13 is provided on the bottom surface inside the second limiting groove 14, a limiting block 16 is movably sleeved inside the fixing hole 13, the limiting block 16 is movably sleeved with the first limiting groove 11, a push-pull electromagnet 15 is fixedly sleeved on the inner wall surface of the fixing hole 13, the telescopic shaft of the push-pull electromagnet 15 is fixedly installed with the limiting block 16, a PLC controller is arranged on one side of the fixed seat 1, the push-pull electromagnet 15 is electrically connected with the PLC controller, a pull ring 17 is fixedly installed on the top surface of the telescopic shaft of the push-pull electromagnet 15, and a limiting column 27 is fixedly installed at one end of the second push column 9.

[0031] In this embodiment, a third circular through hole is provided on the top surface of the main support pipe 3. A rotating cover 18 is movably sleeved on the inner circular wall surface of the third circular through hole. A limiting hole 19 is provided on the top surface of the main support pipe 3. An annular groove is provided on the top surface of the main support pipe 3. A first sealing ring 20 is fixedly sleeved inside the annular groove. A threaded pipe 22 is fixedly installed on the top surface of the fixed seat 1. The threaded pipe 22 is threadedly connected to the main support pipe 3. A sealing washer 23 is fixedly installed on the top surface of the threaded pipe 22. A second fixing ring 24 is fixedly sleeved on the inner circular wall surface of the main support pipe 3. A number of threaded holes are provided on the top surface of the fixed seat 1. Bolts 25 are threadedly connected to the inner circular wall surfaces of the threaded holes. A third limiting groove 28 is provided on the outer circular wall surface of the first push column 8. A second sealing ring 21 is fixedly sleeved on the inner circular wall surface of the third limiting groove 28. Two U-shaped plates 32 are fixedly installed at one end of the plugging ball 5. A protective bin 26 is movably sleeved inside the U-shaped plates 32. An arc-shaped groove 29 is provided at one end of the first push column 8. An electric cabinet is fixedly installed on one side of the fixed seat 1. The PLC controller is fixedly installed on one side inside the electric cabinet. A storage battery 30 is fixedly installed on one side inside the electric cabinet. The storage battery 30 is electrically connected to the PLC controller. A remote controller 31 is provided inside the electric cabinet. For the control scheme, a PLC controller with an Internet connection function can be selected. Then the remote controller 31 is a mobile phone. Or, a scheme that can be controlled by a remote controller can be selected. Then the remote controller 31 is a wireless remote control switch. The wireless remote control switch is powered by the PLC controller and controls the switch of the push-pull electromagnet 15. There are many existing products, such as the model Kaige-KGS-12, which is controlled by a supporting remote controller.

[0032] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: By providing the fixed seat 1, when the user needs to perform perforation operations, the fixed seat 1 is installed on the top surface of the oil wellhead through bolts 25 (the same as the base installation method in the reference document). After that, the drilling pipe 2 is inserted into the fixed seat 1, the threaded pipe 22, and the oil well. Then, the main support pipe 3 is threadedly connected to the outer circumferential wall surface of the threaded pipe 22, and the gap between the top surface of the threaded pipe 22 and the second fixing ring 24 is sealed by the provided sealing washer 23. After that, relevant operations can be carried out on the inside of the drilling pipe 2 through the main support pipe 3. Furthermore, when an oil spray occurs, at this time, through the provided remote controller 31, the user remotely activates the push-pull electromagnet 15 to move the pull limit block 16, so that the limit block 16 moves out of the inside of the first limit groove 11. As a result, the limit block 16 no longer limits the second push column 9. Thus, under the push of the spring 10, the first push column 8 moves upward inside the side pipe 4 to push the plugging ball 5 into the inside of the fixed seat 1. At this time, the plugging ball 5 is washed up by the oil and moves to the top inside the main support pipe 3, and the plugging ball 5 is blocked by the provided first fixing ring 6. The plugging ball 5 and the sealing ring 7 cooperate with each other to seal the gap between the sealing ring 7 and the plugging ball 5, and the higher the oil pressure, the better the sealing effect. At the same time, through the provided limit column 27, the limit column 27 limits the second push column 9 so that the second push column 9 does not completely enter the inside of the side pipe 4, and the push-pull electromagnet 15 is activated to push the limit block 16 into the inside of the limit column 27 to limit it, so that the second push column 9 and the first push column 8 do not move. The arc-shaped groove 29 on one side of the first push column 8 fits with the inner wall of the main support pipe 3. At the same time, the second sealing ring 21 is provided to seal between the first push column 8 and the side pipe 4 to prevent oil leakage, thus completing the plugging and sealing of the oil. Then, the user approaches and manually rotates the rotating cover 18 to enter the inside of the limit hole 19, and the rotating cover 18 and the main support pipe 3 are sealed by the first sealing ring 20 to further strengthen a safety measure to prevent oil leakage. Thus, the effect of preventing oil from spraying out of the wellhead is achieved, enabling the first push column 8, the second push column 9, the spring 10, etc. to respond quickly and act timely under remote control through the remote controller 31 to push the plugging ball 5 into the inside of the main support pipe 3 to seal the top inside the main support pipe 3 to prevent oil spraying. The plugging action speed is relatively fast, and the overall device has fewer driving devices, lower cost. At the same time, the top surface of the main support pipe 3 is secondarily sealed by rotating the rotating cover 18 to strengthen a safety measure, ensuring the anti-spray effect, which is relatively practical.

[0033] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. A blowout prevention device for perforating operation, comprising a fixed seat (1), a first circular through hole is formed on the top surface of the fixed seat (1), a drilling tube (2) is movably sleeved inside the first circular through hole, a main support tube (3) is arranged inside the fixed seat (1), a second circular through hole is formed on the outer circular wall surface of the main support tube (3), a side tube (4) is fixedly mounted on the outer circular wall surface of the main support tube (3), the internal space of the main support tube (3) is connected to the internal space of the side tube (4), and the characteristics are as follows: It also includes a blowout prevention component for preventing oil spraying, the blowout prevention component being arranged on the inner circular wall surface of the side pipe (4), the blowout prevention component comprising a blocking ball (5), the blocking ball (5) being movably sleeved on the inner circular wall surface of the side pipe (4).

2. A blowout prevention device for perforating operations according to claim 1, characterized in that: The blowout prevention assembly further comprises: a first fixing ring (6) is fixedly sleeved on the inner circular wall surface of the drilling tube (2), a sealing ring (7) is fixedly installed on the bottom surface of the first fixing ring (6), a first pushing column (8) is movably sleeved on the inner circular wall surface of the side tube (4), a second circular through hole is opened at one end of the side tube (4), a second pushing column (9) is movably sleeved inside the second circular through hole, the second pushing column (9) is fixedly installed with the first pushing column (8), a spring (10) is movably sleeved on the outer circular wall surface of the second pushing column (9), a first limiting groove (11) is opened on the outer circular wall surface of the second pushing column (9), a fixing plate (12) is fixedly installed on one end of the side tube (4), and a second fixing plate (12) is opened on the top surface A limit groove (14), a fixing hole (13) is provided on the inner bottom surface of the second limit groove (14), a limit block (16) is movably sleeved inside the fixing hole (13), the limit block (16) is movably sleeved with the first limit groove (11), a push-pull electromagnet (15) is fixedly sleeved on the inner circular wall surface of the fixing hole (13), the telescopic shaft of the push-pull electromagnet (15) is fixedly installed with the limit block (16), a PLC controller is arranged on one side of the fixing seat (1), the push-pull electromagnet (15) is electrically connected with the PLC controller, a pull ring (17) is fixedly installed on the top surface of the telescopic shaft of the push-pull electromagnet (15), and a limit column (27) is fixedly installed on one end of the second push column (9).

3. A blowout prevention device for perforating operations according to claim 1, characterized in that: A third circular through hole is provided on the top surface of the main support tube (3), a rotating cover (18) is movably sleeved on the inner circular wall surface of the third circular through hole, a limiting hole (19) is provided on the top surface of the main support tube (3), an annular groove is provided on the top surface of the main support tube (3), and a first sealing ring (20) is fixedly sleeved inside the annular groove.

4. A blowout prevention device for perforating operations according to claim 1, characterized in that: A threaded tube (22) is fixedly mounted on the top surface of the fixing seat (1), the threaded tube (22) is threadedly connected to the main support tube (3), a sealing gasket (23) is fixedly mounted on the top surface of the threaded tube (22), and a second fixing ring (24) is fixedly sleeved on the inner circular wall surface of the main support tube (3).

5. A blowout prevention device for perforating operations according to claim 1, characterized in that: A plurality of threaded holes are formed on the top surface of the fixing seat (1), and bolts (25) are threadedly connected to the inner circular wall surfaces of the threaded holes.

6. A blowout prevention device for perforating operations according to claim 2, characterized in that: The outer circular wall surface of the first push column (8) is provided with a third limiting groove (28), and the inner circular wall surface of the third limiting groove (28) is fixedly sleeved with a second sealing ring (21).

7. A blowout prevention device for perforating operations according to claim 1, characterized in that: Two U-shaped plates (32) are fixedly mounted on one end of the blocking ball (5), and a protective bin (26) is movably sleeved inside the U-shaped plate (32).

8. A blowout prevention device for perforating operations according to claim 2, characterized in that: An arc-shaped groove (29) is formed at one end of the first pushing column (8).

9. A blowout prevention device for perforating operations according to claim 8, characterized in that: An electrical cabinet is fixedly mounted on one side of the fixing seat (1); the PLC controller is fixedly mounted on one side of the interior of the electrical cabinet; a storage battery (30) is fixedly mounted on one side of the interior of the electrical cabinet; the storage battery (30) is electrically connected to the PLC controller; and a remote controller (31) is arranged inside the electrical cabinet.

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