Method for covering ignition cylinder on wellhead of out-of-control oil and gas well

Abstract

The invention discloses a method for covering an ignition cylinder on a well mouth of an out-of-control oil and gas well, and relates to the technical field of well control emergency equipment for exploration and development operation of oil and gas fields. During operation of the ignition cylinder of a residual flange cover on the well mouth, a clamping device and a centralizing device are arranged on a rotary drilling machine in advance, and then the ignition cylinder is arranged in the clamping device and the centralizing device; the rotary drilling machine is controlled to lift the ignition cylinder, a power head of the rotary drilling machine is controlled to ascend and descend, and the height of the ignition cylinder is adjusted; the rotary drilling machine is controlled, the position of the rotary drilling machine is adjusted, and the axis of the ignition cylinder is located on the well mouth of the out-of-control well; by utilizing the self weight of the rotary drilling machine, the locking of the clamping device and the limitation of the righting device, the impact of wellhead fluid on the ignition cylinder is overcome, wellhead flames are extracted, the generation of wellhead transverse fire is reduced, the device is suitable for ignition cylinders with different sizes, the operation success rate of the ignition cylinder of a fired well cover is improved, the operation risk of rescue personnel near the wellhead is reduced, and the rescue progress of an out-of-control well is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of well control emergency equipment for oil and gas field exploration and development operations, and in particular to a method for covering a ignition tube on a wellhead of an out-of-control oil and gas well in an oil and gas well rescue operation. Background Art

[0002] A blowout is the most serious industrial disaster in the process of oil exploration and development, which seriously threatens the safety of operators, equipment, underground oil and gas resources and the environment. At present, the commonly used operating procedures for well control rescue at home and abroad include clearing obstacles near the wellhead, cutting wellhead debris, rebuilding the wellhead, and killing the well. Since a blowout is accompanied by high-intensity thermal radiation (the flame temperature usually exceeds 1500℃), personnel and equipment cannot approach the near-wellhead area. Rescue operations usually use ignition tubes and supporting tools to lead the blowout fluid (oil, gas, drilling fluid, fire, etc.) to the top to ensure the safety of operators and equipment near the wellhead.

[0003] In the prior art, the ignition tube is placed on the residual flange of the uncontrolled well by a long-arm excavator or a long-arm mast. Once the upward force generated by the impact of the fluid in the uncontrolled wellbore is greater than the weight of the ignition tube, it is difficult to cover the ignition tube on the residual flange at the wellhead. A stable ignition tube position is essential for the correct ignition of the ejected oil and gas, ensuring the safe consumption of high-pressure oil and gas, thereby preventing the wellhead pressure from continuing to increase.

[0004] The Chinese patent document with the authorization announcement number CN106593339B and the authorization announcement date of November 8, 2022 discloses a multifunctional remote-controlled blowout rescue vehicle. The invention includes a mast, a pressurized oil cylinder, a ignition tube straightener, an ignition tube, a rotating power head, a blowout preventer, a lower vehicle, an upper vehicle, a mast lifting device, a jet cutting frame, and a remote control panel for controlling each component. The mast is installed on the upper vehicle through the mast lifting device, and the mast can be raised and lowered and the vertical adjustment can be achieved through the control of the mast lifting device; the upper vehicle is installed on the lower vehicle; when the mast is erected, the pressurized oil cylinder, the ignition tube straightener, the ignition tube, the rotating power head, and the blowout preventer are installed to realize the function of hoisting the blowout preventer; when the mast is retracted and placed horizontally, the jet cutting frame is installed to realize the function of jet cutting the old wellhead. The advantages of this scheme are: 1. When a blowout accident occurs, on-site cleaning, jet cutting of the old wellhead, and hoisting of the blowout preventer can be carried out.

[0005] However, the above technical solution also has many problems: on the one hand, when carrying out rescue operations, the rescue vehicle is too close to the wellhead of the uncontrolled well, and the risk to rescue personnel is relatively high; on the other hand, the technical solution has relatively fixed requirements on the size of the ignition tube and cannot be used for ignition tubes of different sizes. Summary of the invention

[0006] In order to solve the above technical problems, the present invention proposes a method for covering the ignition tube on the wellhead of an uncontrolled oil and gas well, which can significantly reduce the impact of wellbore fluid impact on the operation of the ignition tube, improve the success rate of the ignition tube operation of the uncontrolled oil and gas well, reduce the operating risks of rescue personnel near the wellhead, and speed up the rescue process of the uncontrolled well.

[0007] The present invention is achieved by adopting the following technical solutions: A method for covering an ignition tube on the wellhead of an out-of-control oil and gas well, characterized in that: firstly, a clamping device and a straightening device are equipped on a rotary drilling machine, and then the ignition tube is placed in the clamping device and the straightening device; the rotary drilling machine is controlled to lift the ignition tube, and the power head of the rotary drilling machine is controlled to rise and fall to adjust the height of the ignition tube; the rotary drilling machine is controlled to adjust the position of the rotary drilling machine so that the axis of the ignition tube is located on the wellhead of the out-of-control well; the deadweight of the rotary drilling machine, the locking of the clamping device and the fixing of the straightening device are used to overcome the impact of the wellhead fluid on the ignition tube, and the negative pressure suction principle of the ignition tube is used to extract the wellhead flame.

[0008] The clamping device includes a power connector, a connecting plate 1 and a clamping hoop; a connecting flange 1 is provided at one end of the power connector where the width is narrowed, and is perpendicular to the end face of the connecting flange 1; a connecting flange 2 is provided at one end of the connecting plate 1, and is perpendicular to the end face of the connecting flange 2, and a clamping hoop is provided at the other end; one end of the power connector where the connecting flange 1 is provided is fixedly connected to one end of the connecting plate 1 where the connecting flange 2 is provided via connecting bolts 1 at four corners.

[0009] The straightening device includes a drill mast connecting head, a web, a connecting plate 2 and a straightening sleeve. One end of the web is fixedly connected to the drill mast connecting head, and the other end of the web is provided with a connecting flange 3 which is perpendicular to the end face of the connecting flange 3; one end of the connecting plate 2 is provided with a connecting flange 4 which is perpendicular to the end face of the connecting flange 4, and the other end is provided with a straightening sleeve; one end of the web provided with the connecting flange 3 is fixedly connected to one end of the connecting plate 2 provided with the connecting flange 4 through connecting bolts 2 on four corners.

[0010] The clamping hoop is of a two-petal type, comprising a hoop 1 and a hoop 2, wherein one end of the hoop 1 is connected to one end of the hoop 2 via a hinge device 1, and the other end is connected to the other end of the hoop 2 via a live bolt 1.

[0011] The righting sleeve is of two-petal type, including righting sleeve component one and righting sleeve component two, righting sleeve component one is one petal of the righting sleeve, righting sleeve component two is the other petal of the righting sleeve, one end of righting sleeve component one is connected to one end of righting sleeve component two through hinge device two, and the other end is connected to the other end of righting sleeve component two through hinge bolt two.

[0012] Two opposite rib plates are welded to the outer wall of one end of the clamp away from the hinge device, and coaxial through holes are opened on the two opposite rib plates. The end of the movable bolt with the bolt hole is placed between the two rib plates and connected to the rib plate by a connecting piece.

[0013] Two opposite rib plates 2 are welded to the outer wall of one end of the straightening sleeve component 1 away from the hinge device 2, and coaxial through holes are opened on the two opposite rib plates 2. The end of the movable bolt 2 with the bolt hole is inserted between the two rib plates 2 and connected to the rib plates 2 by a connecting piece.

[0014] A boss 1 is welded to the outer wall of the end of the clamp 2 away from the hinge device 1, and a through hole is opened on the boss 1. The through hole is coaxial with the swing bolt, and the clamp is locked and clamped by a nut at the opposite end of the swing bolt with the bolt hole.

[0015] A boss 2 is welded to the outer wall of the end of the straightening sleeve component 2 away from the hinge device 2, and a through hole is opened on the boss 2. The through hole is coaxial with the movable bolt 2, and the straightening sleeve is locked by a nut at the opposite end of the movable bolt with the bolt hole.

[0016] The inner wall of the clamping hoop is designed with anti-skid slips. The anti-skid slips on the inner wall of the clamping hoop are used to lock the clamping hoop through threaded pressure, and the inverted teeth are fastened to the ignition tube to prevent the ignition tube from moving up and down due to high pressure and high temperature impact.

[0017] A reinforcing rib plate 1 is provided at the end of the power connector where the width is narrowed, one end of the reinforcing rib plate 1 is connected to the plane of the power connector, and the other end is connected to the end face of flange 1; a reinforcing rib plate 2 is provided on the connecting plate 1, one end of the reinforcing rib plate 2 is connected to the end face of connecting flange 2, and the other end is connected to the outer wall of clamp 1.

[0018] A reinforcing rib plate three is arranged on the web, one end of which is connected to the web plane, and the other end is connected to the end face of the connecting flange three; a reinforcing rib plate four is arranged on the connecting plate two, one end of which is connected to the end face of the connecting flange four, and the other end is connected to the outer wall of the straightening sleeve component one.

[0019] The reinforcing rib plate 1, reinforcing rib plate 2, reinforcing rib plate 3 and reinforcing rib plate 4 are symmetrically arranged on the front and back sides of the power connector, the connecting plate 1, the web plate and the connecting plate 2 respectively.

[0020] The end of the power connection head away from the clamping hoop is provided with a bolt hole connected to the flange of the power head of the rotary drilling rig.

[0021] The drill mast connecting head is provided with bolt holes connected with the drill mast flange of the rotary drilling rig.

[0022] Compared with the prior art represented by the authorization announcement number CN106593339B, the advantages of the present invention are as follows: 1. This method can quickly complete the ignition tube operation of the uncontrolled oil and gas well cover, speed up the rescue process of the uncontrolled oil and gas well, reduce the waste of oil and gas resources and the loss of emergency rescue equipment, improve the success rate of the ignition tube operation of the burning well cover, and reduce the operation risk of rescue personnel near the wellhead.

[0023] 2. The ignition tube clamping device of the present invention is provided with a clamping hoop, and the inner wall of the clamping hoop is designed with anti-slip slips. The hoop is locked by threaded pressure, and the inverted teeth are fastened to the ignition tube to prevent the ignition tube from moving up and down in the hoop due to impact, thereby accelerating the rescue process of the out-of-control well and improving the success rate of the ignition tube operation of the burning well cover.

[0024] 3. The ignition tube clamping device and the straightening device in the present invention, the clamp and the straightening sleeve are two-piece type, and the other end is fixed by a live bolt, which can be applicable to ignition tubes of different sizes.

[0025] 4. The present invention increases the distance between the ignition tube and the rotary drilling machine through the straightening device and the clamping device, increases the distance between the wellhead of the uncontrolled well and the rotary drilling machine, and reduces the operating risk of personnel.

[0026] 5. The ignition tube straightening device of the present invention is provided with a straightening sleeve, which can prevent the ignition tube from lateral swinging under high pressure and high temperature environment, speed up the rescue process of the out-of-control well, and improve the success rate of the ignition tube operation of the burning well cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The invention will be further described in detail below in conjunction with the accompanying drawings and specific implementations, wherein: Figure 1 This is a schematic diagram of the ignition tube of the well cover in case of uncontrolled fire due to blowout; Figure 2 is a schematic diagram of the clamping device; Figure 3 Schematic diagram of the righting device.

[0028] Markings in the figure: 1. Rotary drilling machine; 2. Straightening device; 3. Ignition tube; 4. Clamping device; 5. Power connector; 6. Connecting bolt 1; 7. Connecting flange 1; 8. Connecting flange 2; 9. Connecting plate 1; 10. Rib plate 1; 11. Boss 1; 12. Visible bolt 1; 13. Reinforced rib plate 1; 14. Reinforced rib plate 2; 15. Hoop 1; 16. Articulation device 1; 17. Hoop 2; 18. Drill mast connector; 19. Web plate; 20. Connecting bolt 2; 21. Connecting flange 3; 22. Connecting flange 4; 23. Connecting plate 2; 24. Rib plate 2; 25. Boss 2; 26. Visible bolt 2; 27. Reinforced rib plate 3; 28. Reinforced rib plate 4; 29. ​​Straightening sleeve component 1; 30. Articulation device 2; 31. Straightening sleeve component 2. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are provided below in conjunction with the accompanying drawings: Example 1 As a preferred embodiment of the present invention, it discloses a method for covering an ignition tube on the wellhead of an out-of-control oil and gas well, wherein a clamping device and a straightening device are first equipped on a rotary drilling rig, and then the ignition tube is placed in the clamping device and the straightening device, the rotary drilling rig 1 is controlled to lift the ignition tube 3, and the rotary drilling rig power head is controlled to rise and fall to adjust the height of the ignition tube 31; the rotary drilling rig is controlled to adjust the position of the rotary drilling rig 1 so that the axis of the ignition tube 31 is located on the wellhead of the out-of-control well; the deadweight of the rotary drilling rig, the locking of the clamping device and the fixing of the straightening device are utilized to overcome the impact of the wellhead fluid on the ignition tube, and the wellhead flame is extracted by utilizing the negative pressure suction principle of the ignition tube.

[0030] In this example, the clamping device and the straightening device used are existing structures.

[0031] Example 2 As the best embodiment of the present invention, it discloses a method for covering an ignition tube on the wellhead of an out-of-control oil and gas well. First, a clamping device 4 and a straightening device 2 are equipped on a rotary drilling rig 1, and then the ignition tube 3 is placed in the clamping device 4 and the straightening device 2. The rotary drilling rig 1 is controlled to lift the ignition tube 3, and the rotary drilling rig power head is controlled to rise and fall to adjust the height of the ignition tube 3; the rotary drilling rig 1 is controlled to adjust the position of the rotary drilling rig 1 so that the axis of the ignition tube 3 is located on the wellhead of the out-of-control well; the deadweight of the rotary drilling rig 1, the locking of the clamping device 4 and the fixation of the straightening device 2 are used to overcome the impact of the wellhead fluid on the ignition tube 3, and the wellhead flame is extracted by using the negative pressure suction principle of the ignition tube.

[0032] The clamping device 4 includes a power connector 5, a connecting plate 9 and a clamping hoop; a connecting flange 7 is provided at one end of the power connector 1 where the width is narrowed, and is perpendicular to the end face of the connecting flange 7; a connecting flange 2 8 is provided at one end of the connecting plate 9, and is perpendicular to the end face of the connecting flange 2 8, and a clamping hoop is provided at the other end; one end of the power connector 1 where the connecting flange 7 is provided is fixedly connected to one end of the connecting plate 1 where the connecting flange 2 8 is provided via connecting bolts 6 at four corners.

[0033] The straightening device 2 includes a drill mast connecting head 18, a web 19, a connecting plate 23 and a straightening sleeve. One end of the web 19 is fixedly connected to the drill mast connecting head 18, and the other end of the web 19 is provided with a connecting flange 3 21, which is perpendicular to the end face of the connecting flange 3 21; one end of the connecting plate 23 is provided with a connecting flange 4 222, which is perpendicular to the end face of the connecting flange 4 22, and the other end is provided with a straightening sleeve; one end of the web 19 provided with the connecting flange 3 21 is fixedly connected to one end of the connecting plate 2 23 provided with the connecting flange 4 22 via the connecting bolts 20 on the four corners.

[0034] The clamping hoop is of a two-petal type, including a hoop 15 and a hoop 2 17 . One end of the hoop 15 is connected to one end of the hoop 2 17 via a hinge device 16 , and the other end is connected to the other end of the hoop 2 17 via a hinge bolt 12 .

[0035] The righting sleeve is of two-petal type, including a righting sleeve component 1 29 and a righting sleeve component 2 31. The righting sleeve component 1 29 is one petal of the righting sleeve, and the righting sleeve component 2 31 is the other petal of the righting sleeve. One end of the righting sleeve component 1 29 is connected to one end of the righting sleeve component 2 31 through a hinge device 2 30, and the other end is connected to the other end of the righting sleeve component 2 31 through a hinge bolt 26.

[0036] Two opposite rib plates 10 are welded to the outer wall of one end of the clamp 15 away from the hinge device 16, and coaxial through holes are opened on the two opposite rib plates 10. The end of the movable bolt 12 with the bolt hole is placed between the two rib plates 10 and connected to the rib plates 10 by a connecting piece.

[0037] Two opposite rib plates 24 are welded to the outer wall of one end of the straightening sleeve component 29 away from the hinge device 2 30, and coaxial through holes are opened on the two opposite rib plates 24. The end of the movable bolt 26 with the bolt hole is inserted between the two rib plates 24 and connected to the rib plates 24 by a connecting piece.

[0038] A boss 11 is welded to the outer wall of the end of the clamp 17 away from the hinge device 16, and a through hole is opened on the boss 11. The through hole is coaxial with the movable bolt 12, and the clamp is locked and clamped by a nut at the opposite end of the movable bolt 12 with the bolt hole.

[0039] A boss 25 is welded to the outer wall of the end of the straightening sleeve component 2 31 away from the hinge device 2 30, and a through hole is opened on the boss 25. The through hole is coaxial with the movable bolt 26, and the straightening sleeve is locked by a nut at the opposite end of the movable bolt 26 with the bolt hole.

[0040] The inner wall of the clamping hoop is designed with anti-skid slips.

[0041] A reinforcing rib plate 13 is provided at the end where the width of the power connector 5 is narrowed, one end of the reinforcing rib plate 13 is connected to the plane of the power connector 5, and the other end is connected to the end face of a connecting flange 7; a reinforcing rib plate 2 14 is provided on the connecting plate 1 9, one end of the reinforcing rib plate 2 13 is connected to the end face of a connecting flange 2 8, and the other end is connected to the outer wall of a clamp 15.

[0042] The web 19 is provided with a reinforcing rib plate three 27, one end of which is connected to the plane of the web 19, and the other end is connected to the end face of the connecting flange three 21; the connecting plate two 28 is provided with a reinforcing rib plate four 28, one end of which is connected to the end face of the connecting flange four 22, and the other end is connected to the outer wall of the straightening sleeve component one 29.

[0043] The reinforcing rib plate 1 13 , reinforcing rib plate 2 14 , reinforcing rib plate 3 27 and reinforcing rib plate 4 28 are symmetrically arranged on the front and back sides of the power connector 5 , the connecting plate 1 9 , the web 19 and the connecting plate 2 28 .

[0044] The end of the power connection head 5 away from the clamping hoop is provided with a bolt hole connected to the flange of the power head of the rotary drilling rig.

[0045] The drill mast connector 18 is provided with bolt holes for connecting with the drill mast flange of the rotary drilling rig.

[0046] When implementing the ignition tube operation on the residual flange cover at the wellhead, the clamping device 4 and the straightening device 2 are equipped on the rotary drilling machine 1 in advance, the clamping hoop is opened, the ignition tube 3 body is placed in the clamping hoop, the movable bolt 12 is locked, and the ignition tube 3 is fixed by the anti-slip slip on the inner wall of the hoop; the inner diameter of the straightening sleeve in the straightening device 2 is slightly larger than the outer diameter of the ignition tube 3 body, the ignition tube 3 body is placed in the straightening sleeve, and the movable bolt 26 is locked; the ignition tube 3 is lifted by controlling the rotary drilling machine 1, the rotary drilling machine power head is controlled, the ignition tube 3 is clamped and moved to the upper end of the residual flange at the wellhead, so that the axis of the ignition tube 3 is at the upper end of the residual flange at the wellhead, the dead weight of the rotary drilling machine 1, the locking of the clamping device 4 and the fixing of the straightening device 2 are used to overcome the impact of the wellhead fluid on the ignition tube 3, and the wellhead flame is extracted by the negative pressure suction principle of the ignition tube.

Claims

1. A method for covering a ignition tube on the wellhead of an out-of-control oil and gas well, characterized in that: First, the clamping device (4) and the straightening device (2) are installed on the rotary drilling machine (1), and then the ignition tube (3) is placed in the clamping device (4) and the straightening device (2). The rotary drilling machine (1) is controlled to lift the ignition tube (3), and the rotary drilling machine power head is controlled to rise and fall to adjust the height of the ignition tube (3); the rotary drilling machine (1) is controlled to adjust the position of the rotary drilling machine (1) so that the axis of the ignition tube (3) is located at the wellhead of the uncontrolled well; the deadweight of the rotary drilling machine (1), the locking of the clamping device (4) and the fixing of the straightening device (2) are used to overcome the impact of the wellhead fluid on the ignition tube (3) and extract the wellhead flame.

2. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 1, characterized in that: The clamping device (4) comprises a power connector (5), a connecting plate 1 (9) and a clamping hoop; a connecting flange 1 (7) is provided at one end of the power connector (5) where the width is narrowed and is perpendicular to the end face of the connecting flange 1 (7); a connecting flange 2 (8) is provided at one end of the connecting plate 1 (9) and is perpendicular to the end face of the connecting flange 2 (8), and a clamping hoop is provided at the other end; one end of the power connector (5) where the connecting flange 1 (7) is provided is fixedly connected to one end of the connecting plate 1 (9) where the connecting flange 2 (8) is provided via connecting bolts 1 (6) at four corners.

3. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 1, characterized in that: The straightening device (2) comprises a drill mast connection head (18), a web (19), a second connection plate (23) and a straightening sleeve, wherein one end of the web (19) is fixedly connected to the drill mast connection head (18), and the other end of the web (19) is provided with a third connection flange (21) which is perpendicular to the end face of the third connection flange (21); one end of the second connection plate (23) is provided with a fourth connection flange (22) which is perpendicular to the end face of the fourth connection flange (22), and the other end is provided with a straightening sleeve; one end of the third connection flange (21) of the web (19) is fixedly connected to one end of the fourth connection flange (22) of the second connection plate (23) via second connection bolts (20) at four corners.

4. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 2, characterized in that: The clamping hoop is of a two-piece type, comprising a hoop 1 (15) and a hoop 2 (17); one end of the hoop 1 (15) is connected to one end of the hoop 2 (17) via a hinge device 1 (16), and the other end is connected to the other end of the hoop 2 (17) via a hinge bolt 1 (12).

5. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 3 is characterized in that: The righting sleeve is of a two-piece type, comprising a righting sleeve component 1 (29) and a righting sleeve component 2 (31). The righting sleeve component 1 (29) is one piece of the righting sleeve, and the righting sleeve component 2 (31) is the other piece of the righting sleeve. One end of the righting sleeve component 1 (29) is connected to one end of the righting sleeve component 2 (31) via a hinge device 2 (30), and the other end is connected to the other end of the righting sleeve component 2 (31) via a hinge bolt 2 (26).

6. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 4, characterized in that: Two opposite rib plates (10) are welded to the outer wall of one end of the clamp (15) away from the hinge device (16), and coaxial through holes are opened on the two opposite rib plates (10). The end of the movable bolt (12) with the bolt hole is inserted between the two rib plates (10) and connected to the rib plates (10) by a connecting piece.

7. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 5, characterized in that: Two opposite rib plates (24) are welded to the outer wall of one end of the straightening sleeve component (29) away from the hinge device (30), and coaxial through holes are opened on the two opposite rib plates (24). The end of the movable bolt (26) with the bolt hole is inserted between the two rib plates (24) and connected to the rib plates (24) by a connecting piece.

8. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 4, characterized in that: A boss 1 (11) is welded to the outer wall of the end of the clamping hoop 2 (17) away from the hinge device 1 (16), and a through hole is opened on the boss 1 (11), the through hole is coaxial with the movable bolt 1 (12), and the clamping hoop is locked and clamped by a nut at the end opposite to the bolt hole of the movable bolt 1 (12).

9. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 5, characterized in that: A boss 2 (25) is welded to the outer wall of the end of the straightening sleeve component 2 (31) away from the hinge device 2 (30), and a through hole is opened on the boss 2 (25). The through hole is coaxial with the movable bolt 2 (26), and the straightening sleeve is locked by a nut at the opposite end of the movable bolt 2 (26) with the bolt hole.

10. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 2, characterized in that: The inner wall of the clamping hoop is designed with anti-skid slips.

11. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 2, characterized in that: A reinforcing rib plate 1 (13) is provided at the end of the power connector (5) where the width is narrowed, one end of the reinforcing rib plate 1 (13) is connected to the plane of the power connector (5), and the other end is connected to the end face of flange 1 (7); a reinforcing rib plate 2 (14) is provided on the connecting plate 1 (9), one end of the reinforcing rib plate 2 (14) is connected to the end face of connecting flange 2 (8), and the other end is connected to the outer wall of clamp 1 (15).

12. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 3, characterized in that: The web (19) is provided with a reinforcing rib plate three (27), one end of which is connected to the web (19) plane, and the other end is connected to the end face of the connecting flange three (21); the connecting plate two (23) is provided with a reinforcing rib plate four (28), one end of which is connected to the end face of the connecting flange four (22), and the other end is connected to the outer wall of the straightening sleeve component one (29).

13. A method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 11 or 12, characterized in that: The reinforcing rib plate 1 (13), the reinforcing rib plate 2 (14), the reinforcing rib plate 3 (27) and the reinforcing rib plate 4 (28) are symmetrically arranged on the front and back sides of the power connector (5), the connecting plate 1 (9), the web (19) and the connecting plate 2 (23), respectively.

14. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 2, characterized in that: The end of the power connection head (5) away from the clamping hoop is provided with a bolt hole connected to the flange of the power head of the rotary drilling rig.

15. The method for covering a ignition tube on the wellhead of an out-of-control oil and gas well according to claim 3, characterized in that: The drill mast connection head (18) is provided with bolt holes for connecting to the drill mast flange of the rotary drilling rig.

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