Rapid spraying device and method for minor repair operation

Abstract

The invention relates to the technical field of oil field workover treatment, in particular to a rapid blowout wrecking device and method for minor repair operation. According to the technical scheme, a lifting mechanism is installed on workover treatment equipment through a fixing mechanism, a rotary speed reducer is installed at the upper end of the lifting mechanism, a blowout wrecking rotating arm is installed on the upper portion of the rotary speed reducer, the outer end of the blowout wrecking rotating arm is fixedly connected with a fixing base, a turbine is installed in the fixing base, and a rotating short section is installed in the center of the turbine. The lower end of the rotary short section is movably connected with a full-bore plug valve; the worm is installed on one side of the turbine, the worm is driven by the hydraulic cycloid motor to rotate, the worm drives the turbine and the rotary short section to rotate, then the full-bore plug valve is driven to be rotationally connected to an oil pipe of a wellhead, then the switch knob is closed, and blowout wrecking is completed. The full-bore plug valve is installed through mechanical rotation, the follow-up loading function is achieved, potential safety hazards caused by manual installation of the full-bore plug valve are avoided, and rapid blowout wrecking work of blowout is achieved.

Description

Technical Field

[0001] This invention relates to the field of oilfield well workover technology, and in particular to a rapid spraying device and method for minor well workover operations. Background Technology

[0002] With the continuous maturation of well workover technology in oil and gas field development, automation of well workover operations has become a development trend. Currently, well workover operations in oil and gas fields have achieved "one-click" fully automated operation in stages such as tubing string tripping, tubing string discharge, and drill string delivery. However, in situations requiring wellhead blowout prevention, there is still no mature technology to automate the installation of plug valves. As a core device for well control in oilfields, plug valves possess characteristics such as 90° rapid opening and closing, high pressure resistance, and a sealing rating of ANSI B16.104 VI, and are widely used for blowout prevention within the drill string. However, currently, in well workover operations, especially in situations requiring wellhead blowout prevention, manual installation of plug valves remains the only feasible emergency response method, posing a high safety risk.

[0003] Chinese patent number CN201710765512.0, entitled "Plug Valve Installation Device," includes a fixing component, a vertical adjustment component, a horizontal adjustment component, and a connecting component. The fixing component connects to the wellhead flange, securing the entire device to it. The vertical adjustment component adjusts the height of the horizontal adjustment component and the connecting component in the vertical direction to accommodate the height of the wellhead tubing. The horizontal adjustment component adjusts the horizontal distance of the connecting component to achieve alignment with the wellhead tubing. In the event of a blowout, the plug valve is opened and installed on the upper end of the connecting component. By adjusting the horizontal and vertical adjustment components, the lower end of the connecting component is aligned with the wellhead tubing and locked in place. Closing the plug valve then allows control of the wellhead tubing's internal cavity. The problem is that the plug valve installation device, with its fixing component's base connected to the wellhead flange, is fixed to the flange, preventing quick and easy installation and posing a significant safety risk.

[0004] Chinese patent number CN202320838650.8, entitled "A Rotary Plug Valve Retrieval and Well Workover Equipment," describes a retrieval device comprising two base columns and a retrieval frame rotatably mounted on top of the two base columns. A rotating base is mounted on the upper part of the retrieval frame, and a rotating arm is rotatably connected to the end of the rotating base. A pin A is mounted on the rotating arm, and a push rod is linked to it via pin A. The end of the push rod is movably connected to a rotating hydraulic cylinder fixed to the bottom of the rotating base, and rotates to the bottom of the rotating base via the rotating hydraulic cylinder. The problem with this invention is that it uses a gantry linkage and two straight connecting rods, and is installed next to the wellhead, which limits its ability to be moved and quickly installed, thus presenting certain limitations.

[0005] Chinese patent number CN202322989802.7, entitled "An Automated Plug Valve Installation Device," includes a telescopic arm with a connection hole at its rear end for connection to an automated robotic arm; a plug valve quick-installation mechanism is provided at the front end of the telescopic arm, and a plug valve is connected to the end of the quick-installation mechanism. This utility model can be installed on automated well workover equipment before the tubing string is pulled up. The plug valve is positioned at the top of the wellhead tubing by swinging the robotic arm. The robotic arm then lowers the plug valve so that its bottom thread aligns with the tubing thread. An automatic hydraulic motor rotates to tighten the threads, and further rotation completes the disengagement process, achieving plug valve installation and tool separation in a single operation. However, this design has a problem: while the hydraulic motor is positioned above the plug valve during installation on the wellhead tubing, in reality, the plug valve must be open during a blowout requiring rapid installation. The ball valve should be closed only after the plug valve is installed on the tubing. Otherwise, under the high pressure of a blowout, the plug valve is difficult to install on the tubing coupling, and dangerous accidents are likely to occur. Therefore, the structure of this patented design is difficult to promote and use. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned deficiencies in the existing technology by providing a rapid blowout repair device and method. This invention features modular installation, mechanically rotating and installing a full-bore plug valve, and has a follow-load function, avoiding the safety hazards of manually installing the full-bore plug valve, and enabling rapid blowout repair work. It is suitable for blowout repair situations during well workover operations.

[0007] The present invention discloses a rapid blowout repair device, the technical solution of which includes a fixed mechanism, a rotating sub, a turbine, a worm gear, a fixed seat, a full-bore plug valve, a blowout repair rotating arm, a rotary reducer, and a lifting mechanism. The lifting mechanism is installed on the well workover equipment via the fixed mechanism. A rotary reducer is installed at the upper end of the lifting mechanism, and a blowout repair rotating arm is installed on the upper part of the rotary reducer. The outer end of the blowout repair rotating arm is fixedly connected to the fixed seat. A turbine is installed inside the fixed seat. A rotating sub is installed at the center of the turbine. The lower end of the rotating sub is movably connected to the full-bore plug valve. A worm gear is installed on one side of the turbine. The worm gear is driven to rotate by a hydraulic cycloidal motor. The worm gear drives the turbine and the rotating sub to rotate, thereby driving the full-bore plug valve to rotate and connect to the tubing at the wellhead to complete the blowout repair.

[0008] Preferably, the aforementioned fixing base includes a fixing base body, a first mounting base, a turbine mounting cavity, a worm gear mounting cavity, a second mounting base, and mounting screw holes. One end of the fixing base body is provided with the first mounting base, which is used to mount the outer end of the spraying rotating arm. The inner cavity of the fixing base body is provided with a worm gear mounting cavity for mounting a worm, and the outer end of the worm is connected to a hydraulic cycloidal motor. The hydraulic cycloidal motor is mounted on the second mounting base at the outer end of the worm gear mounting cavity. The outer side of the fixing base body is provided with a turbine mounting cavity, in which a turbine meshing with the worm is installed. The upper side of the turbine mounting cavity is provided with multiple mounting screw holes for mounting a pressure cap and fixing a rotating short section.

[0009] Preferably, the turbine includes a turbine body, turbine teeth, a central rod, a multi-hole cavity, and turbine mounting holes. The outer end of the turbine body is provided with turbine teeth for engaging with a worm gear. The middle two ends of the turbine body are respectively provided with central rods. A multi-hole cavity is provided in the central rod for engaging with the outer multi-hole column of the rotating short section. Multiple turbine mounting holes are provided on the outer end face of the central rod for connecting with a fixed base.

[0010] Preferably, the worm gear includes a worm body, worm teeth, an external worm connector, and a power end connector. The worm body has worm teeth at its center for engaging with a worm gear. An external worm connector is located at one end of the worm body, and a power end connector is located at the other end. The power end connector is connected to the output end of a hydraulic cycloidal motor.

[0011] Preferably, the aforementioned rotating short section includes a rotating short section body, an upper section clamp, a fixed plate, an outer multi-faceted post, and a lower male thread. The upper section clamp is installed at the upper end of the rotating short section body, and a fixed plate is provided at the lower part of the upper section clamp for connecting and cooperating with the pressure cap on the fixed seat. An outer multi-faceted post is provided at the lower part of the fixed plate for cooperating with the multi-faceted cavity of the turbine. A lower male thread is provided at the lower end of the rotating short section body for connecting with the upper end of the full-bore plug valve.

[0012] Preferably, the above-mentioned full-bore plug valve includes a plug valve body, a full-bore inner diameter, a valve seat, an upper female thread, a switch knob, a ball plug, and a lower male thread. The inner cavity of the plug valve body is provided with a full-bore inner diameter. A valve seat is provided in the middle of the plug valve body. A ball plug is installed in the valve seat. The outer end of the ball plug is connected to the switch knob. An upper female thread is provided at the upper end of the plug valve body for connecting with the lower end of the rotating sub. A lower male thread is provided at the lower end for connecting with the tubing to be sprayed during a blowout.

[0013] Preferably, the above-mentioned lifting mechanism includes an upper pin, a lower pin, a lifting telescopic arm, a lifting telescopic hydraulic cylinder, and a lifting mechanism body. The upper end of the lifting mechanism body is connected to the lifting telescopic arm, and the upper end of the lifting telescopic arm is connected to the output shaft of the lifting telescopic hydraulic cylinder through the upper pin. The outer wall of the lifting mechanism body is connected to the lifting telescopic hydraulic cylinder through the lower pin. The lifting telescopic hydraulic cylinder drives the lifting telescopic arm to move up and down. The upper end of the lifting telescopic arm is connected to a rotary reducer.

[0014] Preferably, the aforementioned spraying rotating arm includes a rotating telescopic arm, a rotating telescopic hydraulic cylinder, a rotating arm, a fifth hexagon socket head cap screw, and a connecting pipe. The rotating arm has an L-shaped structure. One end of the rotating arm is connected to the output end of the rotary reducer, and the rotating telescopic hydraulic cylinder is fixedly installed in the inner cavity of the other end of the rotating arm. The front end of the rotating telescopic hydraulic cylinder is provided with a rotating telescopic arm, which is connected to the first mounting seat of the fixed base at the front end of the rotating telescopic arm. The rotating arm and the connecting pipe are respectively connected and positioned to the upper and lower ends of the rotary reducer by the fifth hexagon socket head cap screw. The connecting pipe is installed in the inner cavity of the lifting telescopic arm and is used to position and fix the lower end of the rotary reducer.

[0015] Preferably, the fixed plate of the aforementioned rotating short section is connected to the gland and the turbine by passing through the mounting screw hole with a fourth hexagon socket head cap screw, and a first tapered roller bearing is installed between the turbine and the gland respectively.

[0016] The method of using the rapid spraying device for minor repair operations mentioned in this invention includes the following steps: I. During the commissioning of blowout prevention and emergency blowout control operations after the well workover equipment has been arranged and in place: By driving the rotary reducer, the emergency spraying rotating arm is rotated until the center of the full-bore plug valve is directly opposite the center of the wellhead. By adjusting the rotary telescopic cylinder, the rotary telescopic arm is extended, causing the fixed seat to move forward, thus positioning the center of the full-bore plug valve directly above the tubing at the wellhead. By driving the lifting telescopic cylinder, the lifting telescopic arm is pressed down until the male thread of the lower part of the full-bore plug valve aligns with the female thread of the tubing coupling at the wellhead. Then, the hydraulic cycloidal motor is driven to rotate the worm gear, which in turn drives the turbine to rotate. The turbine's multi-hole cavity drives the outer multi-column of the rotating short section to rotate, thereby rotating the full-bore plug valve. Simultaneously, the lifting telescopic cylinder drives the lifting telescopic arm to follow the load and descend until the male thread of the lower part of the full-bore plug valve is tightened with the female thread of the tubing coupling at the wellhead. Then, the switch knob of the full-bore plug valve is rotated, causing the ball plug inside the full-bore plug valve to rotate, thereby closing the internal channel of the full-bore plug valve and completing the installation steps for emergency spraying commissioning. Then, by turning the switch knob of the full-bore plug valve, the internal passage of the full-bore plug valve is opened; then the hydraulic cycloidal motor is driven in the reverse direction to drive the worm gear to rotate, and the worm gear drives the turbine to rotate in the reverse direction, thereby driving the full-bore plug valve to rotate in the reverse direction. At the same time, the lifting and telescopic hydraulic cylinder drives the lifting and telescopic arm to follow the load and move upward until the male thread of the lower part of the plug valve of the full-bore plug valve is completely disengaged from the female thread of the tubing joint clamp at the wellhead. Then, the lifting and telescopic hydraulic cylinder continues to drive the lifting and telescopic arm to follow the load and move upward to the original height. Then, the rotary reducer is driven to rotate in the reverse direction, driving the emergency spraying rotating arm and the full-bore plug valve to rotate to the original position, thereby completing the disassembly work for emergency spraying debugging. II. When a well kick or blowout occurs at the wellhead during well workover operations: By driving the rotary reducer, the emergency spraying arm is rotated until the full-bore plug valve is directly above the center tubing at the wellhead. The lifting and telescopic hydraulic cylinder then drives the lifting and telescopic arm downwards until the male thread of the full-bore plug valve aligns with the female thread of the tubing coupling at the wellhead. The hydraulic cycloidal motor then drives the worm gear to rotate, which in turn drives the turbine, which in turn rotates the rotating short section and the full-bore plug valve. Simultaneously, the lifting and telescopic hydraulic cylinder drives the lifting and telescopic arm downwards with the load until the male thread of the full-bore plug valve is tightened with the female thread of the tubing coupling at the wellhead, thus securing the full-bore plug valve to the tubing. Finally, the switch knob of the full-bore plug valve is rotated, causing the ball plug inside the valve to rotate, thereby closing the internal passage of the full-bore plug valve. This completes the emergency spraying operation at the wellhead.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention drives a rotary reducer to rotate a rotating arm until the full-bore plug valve is directly above the center tubing at the wellhead. A lifting and telescopic cylinder then drives the lifting and telescopic arm downwards until the male thread of the full-bore plug valve aligns with the female thread of the tubing coupling at the wellhead. A hydraulic cycloidal motor then drives a worm gear to rotate, which in turn drives a turbine, which in turn rotates the rotating short section and the full-bore plug valve. Simultaneously, the lifting and telescopic cylinder drives the lifting and telescopic arm downwards with the load until it reaches the bottom of the full-bore plug valve. Tighten the male thread of the valve to the female thread of the tubing joint at the wellhead to secure the full-bore plug valve to the tubing. Then, close the internal channel of the full-bore plug valve to complete the emergency blowout. This invention features modular installation. During a blowout, the full-bore plug valve is mechanically rotated and installed, and it has a follow-load function during rotation, avoiding the safety hazards of manual installation. After installing the full-bore plug valve, the ball plug of the full-bore plug valve is closed to achieve rapid emergency blowout. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall installation structure of the present invention; Figure 2 This is a schematic diagram of a full-bore plug valve; Figure 3 This is a schematic diagram of the rotating short section; Figure 4 This is a schematic diagram of the turbine structure; Figure 5 This is a schematic diagram of the worm gear structure; Figure 6 This is a structural diagram of the fixed base; Figure 7 This is a side view of the connection between the rotating short section and the fixed base; Figure 8 This is a top view of the connection between the rotating short section and the fixed base; Figure 9 This is a schematic diagram of the spray-spraying rotating arm; Figure 10 This is a structural diagram of the lifting mechanism; Figure 11 This is a structural diagram of the fixed mechanism; Figure 12 This is a three-dimensional structural diagram of the connection between the rotating short section and the fixed base; Figure 13 This is a three-dimensional structural diagram of the connection between the rotating short section and the fixed base; Figure 14 This is a schematic diagram of the overall structure of the present invention; In the diagram: 1. Rotary short section; 2. Turbine; 3. Worm gear; 4. Fixed seat; 5. Full-bore plug valve; 6. Spraying rotating arm; 7. Rotary reducer; 8. Lifting mechanism; 9. Fixed mechanism; 10. Y-shaped bracket; 11. Upper female thread; 12. Switch knob; 13. Ball plug; 14. Lower male thread of plug valve; 15. Upper clamp; 16. Fixed plate; 17. Outer polygonal column; 18. Lower male thread; 19. Fourth internal hex socket head cap screw; 20. Pressure cap; 22. Screw; 23. First tapered roller bearing; 24. First internal hex socket head cap screw; 25. Second tapered roller bearing; 26. Second internal hex socket head cap screw. 27. Angular cylindrical head screw, 29. Third tapered roller bearing, 30. Rear end cover, 31. Rear end cap, 32. Third internal hexagonal cylindrical head screw, 33. Hydraulic cycloidal motor, 34. Rotary telescopic arm, 35. Pin, 36. Rotary telescopic cylinder, 37. Rotary arm, 38. Fifth internal hexagonal cylindrical head screw, 39. Connecting pipe, 40. Upper pin, 41. Lower pin, 42. Lifting telescopic arm, 43. Lifting telescopic cylinder, 44. Lifting mechanism body, 45. Upper fixed square tube, 46. Fixing plate, 47. Bolt, 48. Lower fixed square tube, 49. Clamp, 50. Sixth internal hexagonal cylindrical head screw, 51. Nut; 1.1 Rotary short section body, 2.1 Turbine body, 2.2 Turbine teeth, 2.3 Center rod body, 2.4 Multi-hole cavity, 2.5 Turbine mounting hole, 3.1 Worm body, 3.2 Worm teeth, 3.3 Worm external connector, 3.4 Worm power end connector, 4.1 Fixed seat body, 4.2 First mounting seat, 4.3 Turbine mounting cavity, 4.4 Worm mounting cavity, 4.5 Second mounting seat, 4.6 Mounting screw hole, 5.1 Plug valve body, 5.2 Full-way inner diameter, 5.3 Valve seat. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Example 1, referring to Figures 1-14 The present invention discloses a rapid blowout control device for minor well repair operations, comprising a fixed mechanism 9, a rotating sub 1, a turbine 2, a worm gear 3, a fixed base 4, a full-bore plug valve 5, a blowout control rotating arm 6, a rotary reducer 7, and a lifting mechanism 8. The lifting mechanism 8 is mounted on a Y-shaped bracket 10 of the well repair equipment via the fixed mechanism 9. The rotary reducer 7 is mounted on the upper end of the lifting mechanism 8, and the blowout control rotating arm 6 is mounted on the upper part of the rotary reducer 7. The outer end of the blowout control rotating arm 6 is fixedly connected to the fixed base 4. The turbine 2 is mounted inside the fixed base 4, and the rotating sub 1 is mounted at the center of the turbine 2. The lower end of the rotating sub 1 is movably connected to the full-bore plug valve 5. The worm gear 3 is mounted on one side of the turbine 2. The worm gear 3 is driven to rotate by a hydraulic cycloidal motor 33. The worm gear 3 drives the turbine 2 and the rotating sub 1 to rotate, thereby driving the full-bore plug valve 5 to rotate and connect to the tubing at the wellhead to complete the blowout control.

[0021] Reference Figure 6 The fixing seat 4 mentioned in this invention includes a fixing seat body 4.1, a first mounting seat 4.2, a turbine mounting cavity 4.3, a worm gear mounting cavity 4.4, a second mounting seat 4.5, and mounting screw holes 4.6. One end of the fixing seat body 4.1 is provided with the first mounting seat 4.2, which is used to install the outer end of the spraying rotating arm 6. The inner cavity of the fixing seat body 4.1 is provided with a worm gear mounting cavity 4.4 for installing a worm gear 3, and the outer end of the worm gear 3 is connected to a hydraulic cycloidal motor 33. The hydraulic cycloidal motor 33 is installed on the second mounting seat 4.5 at the outer end of the worm gear mounting cavity 4.4. The outer side of the fixing seat body 4.1 is provided with a turbine mounting cavity 4.3, in which a turbine 2 meshes with the worm gear 3 is installed. The upper side of the turbine mounting cavity 4.3 is provided with multiple mounting screw holes 4.6 for installing a pressure cap 20 and fixing the rotating section 1.

[0022] Reference Figure 4The turbine 2 mentioned in this invention includes a turbine body 2.1, turbine teeth 2.2, a central rod 2.3, a multi-hole cavity 2.4, and turbine mounting holes 2.5. The outer end of the turbine body 2.1 is provided with turbine teeth 2.2 for cooperating with the worm gear 3. The two ends of the middle part of the turbine body 2.1 are respectively provided with central rods 2.3. The multi-hole cavity 2.4 is provided in the central rod 2.3 for cooperating with the outer multi-hole column 17 of the rotating short section 1. Multiple turbine mounting holes 2.5 are provided on the outer end face of the central rod 2.3 for connecting with the fixed seat 4.

[0023] Reference Figure 5 The worm 3 mentioned in this invention includes a worm body 3.1, worm teeth 3.2, worm external connector 3.3, and worm power end connector 3.4. The worm body 3.1 has worm teeth 3.2 at its center for cooperating with the turbine 2. The worm body 3.1 has a worm external connector 3.3 at one end and a worm power end connector 3.4 at the other end, which is connected to the output end of the hydraulic cycloidal motor 33.

[0024] Specifically, the worm gear external connector 3.3 is connected to the front end cap 25 via the second tapered roller bearing 26 and is fixed by the first socket head cap screw 24; the first mounting base 4.2 is fixedly connected to the front end of the rotating telescopic arm 34 via the second socket head cap screw 27; the rear end cap 31 and the rear end middle cover 30 are installed on the outer end of the second mounting base 4.5 via the third socket head cap screw 32, and the third tapered roller bearing 29 is installed inside the rear end middle cover 30.

[0025] Reference Figure 3 The rotating short section 1 mentioned in this invention includes a rotating short section body 1.1, an upper section clamp 15, a fixed plate 16, an outer multi-faceted post 17, and a lower male buckle 18. The upper section clamp 15 is installed at the upper end of the rotating short section body 1.1. The lower part of the upper section clamp 15 is provided with a fixed plate 16 for connecting and cooperating with the pressure cap 20 on the fixed seat 4. The lower part of the fixed plate 16 is provided with an outer multi-faceted post 17 for cooperating with the multi-faceted cavity 2.4 of the turbine 2. The lower end of the rotating short section body 1.1 is provided with a lower male buckle 18 for connecting with the upper end of the full-bore plug valve 5.

[0026] Reference Figure 2The full-bore plug valve 5 mentioned in this invention includes a plug valve body 5.1, a full-bore inner diameter 5.2, a valve seat 5.3, an upper female connector 11, a switch knob 12, a ball plug 13, and a lower male connector 14. The inner cavity of the plug valve body 5.1 is provided with a full-bore inner diameter 5.2. A valve seat 5.3 is provided in the middle of the plug valve body 5.1. A ball plug 13 is installed in the valve seat 5.3. The outer end of the ball plug 13 is connected to the switch knob 12. An upper female connector 11 is provided at the upper end of the plug valve body 5.1 for connecting with the lower end of the rotating short section 1. A lower male connector 14 is provided at the lower end for connecting with the oil pipe to be repaired after a blowout.

[0027] Reference Figure 10 The lifting mechanism 8 mentioned in this invention includes an upper pin 40, a lower pin 41, a lifting telescopic arm 42, a lifting telescopic hydraulic cylinder 43, and a lifting mechanism body 44. The upper end of the lifting mechanism body 44 is connected to the lifting telescopic arm 42. The upper end of the lifting telescopic arm 42 is connected to the output shaft of the lifting telescopic hydraulic cylinder 43 through the upper pin 40. The outer wall of the lifting mechanism body 44 is connected to the lifting telescopic hydraulic cylinder 43 through the lower pin 41. The lifting telescopic hydraulic cylinder 43 drives the lifting telescopic arm 42 to move up and down. The upper end of the lifting telescopic arm 42 is connected to a rotary reducer 7.

[0028] Reference Figure 9 The spraying rotating arm 6 mentioned in this invention includes a rotating telescopic arm 34, a pin 35, a rotating telescopic hydraulic cylinder 36, a rotating arm 37, a fifth hexagon socket head cap screw 38, and a connecting pipe 39. The rotating arm 37 has an L-shaped structure. One end of the rotating arm 37 is connected to the output end of the rotary reducer 7. The rotating telescopic hydraulic cylinder 36 is fixedly installed in the inner cavity of the other end of the rotating arm 37 through the pin 35. The rotating telescopic arm 34 is provided at the front end of the rotating telescopic hydraulic cylinder 36. The front end of the rotating telescopic arm 34 is connected to the first mounting seat 4.2 of the fixed seat 4. The rotating arm 37 and the connecting pipe 39 are respectively connected and positioned to the upper and lower ends of the rotary reducer 7 through the fifth hexagon socket head cap screw 38. The connecting pipe 39 is installed in the inner cavity of the lifting telescopic arm 42 and is used to position and fix the lower end of the rotary reducer 7.

[0029] The fixed plate 16 of the aforementioned rotating short section 1 is connected to the pressure cover 20 and the turbine 2 through the mounting screw hole 4.6 via the fourth internal hexagonal head screw 19, and the first tapered roller bearing 23 is installed between the turbine 2 and the pressure cover 20 respectively. The pressure cover 20 is fixed to the fixed seat 4 by screws 22.

[0030] In addition, a clamp 49 is installed on the lower part of the Y-shaped bracket 10 of the well workover equipment by means of a sixth internal hexagonal head screw 50 and a nut 51. The outer side of the clamp 49 is connected to the lifting mechanism body 44 by a fixed lower fixed square tube 48. The upper part of the Y-shaped bracket 10 is connected to an upper fixed square tube 45 by means of bolts 47 and a fixing plate 46. The other end of the upper fixed square tube 45 is fixedly connected to the upper part of the lifting mechanism body 44.

[0031] The method of using the rapid spraying device for minor repair operations mentioned in this invention includes the following steps: I. During the commissioning of blowout prevention and emergency blowout control operations after the well workover equipment has been arranged and in place: By driving the rotary reducer 7, the spraying rotating arm 6 is rotated until the center of the full-bore plug valve 5 is directly opposite the center of the wellhead. By adjusting the rotary telescopic cylinder 36, the rotary telescopic arm 34 is extended, causing the fixed seat 4 to move forward, thus positioning the center of the full-bore plug valve 5 directly above the tubing at the wellhead. By driving the lifting telescopic cylinder 43, the lifting telescopic arm 42 is pressed down until the male thread 14 at the bottom of the full-bore plug valve 5 aligns with the female thread of the tubing coupling at the wellhead. Then, the hydraulic cycloidal motor 33 is driven to rotate the worm gear 3, thereby rotating the worm gear... 3 drives the turbine 2 to rotate, and through the multi-hole cavity 2.4 of the turbine 2, drives the outer multi-hole column 17 of the rotating short section 1 to rotate, thereby driving the full-bore plug valve 5 to rotate; at the same time, the lifting telescopic cylinder 43 drives the lifting telescopic arm 42 to follow the load and go down until the male thread 14 of the plug valve of the full-bore plug valve 5 is tightened with the female thread of the tubing joint at the wellhead. Then, the switch knob 12 of the full-bore plug valve 5 is turned to drive the ball plug 13 inside the full-bore plug valve 5 to rotate, thereby closing the internal channel of the full-bore plug valve 5 and completing the installation steps of the emergency spraying commissioning. Then, by rotating the switch knob 12 of the full-bore plug valve 5, the internal passage of the full-bore plug valve 5 is opened; then the hydraulic cycloidal motor 33 is driven in the reverse direction to drive the worm gear 3 to rotate, and the worm gear 3 drives the turbine 2 to rotate in the reverse direction, thereby driving the full-bore plug valve 5 to rotate in the reverse direction. At the same time, the lifting telescopic cylinder 43 drives the lifting telescopic arm 42 to follow the load and move upward until the male thread 14 of the plug valve of the full-bore plug valve 5 is completely disengaged from the female thread of the tubing joint clamp at the wellhead. Then, the lifting telescopic cylinder 43 continues to drive the lifting telescopic arm 42 to follow the load and move upward to the original height. Then, the rotary reducer 7 is driven to rotate in the reverse direction, driving the emergency spraying rotating arm 6 and the full-bore plug valve 5 to rotate to the original position, thereby completing the disassembly work of the emergency spraying commissioning. II. When a well kick or blowout occurs at the wellhead during well workover operations: By driving the rotary reducer 7, the emergency spraying rotating arm 6 is rotated until the full-bore plug valve 5 is located directly above the center tubing at the wellhead. The lifting telescopic cylinder 43 drives the lifting telescopic arm 42 to press down until the male thread 14 of the plug valve of the full-bore plug valve 5 aligns with the female thread of the tubing coupling at the wellhead. Then, the hydraulic cycloidal motor 33 drives the worm gear 3 to rotate, which in turn drives the turbine 2 to rotate. The turbine 2 drives the rotating short section 1 and the full-bore plug valve 5 to rotate. At the same time, the lifting telescopic cylinder 43 drives the lifting telescopic arm 42 to follow the load and move downward until the male thread 14 of the plug valve of the full-bore plug valve 5 is tightened with the female thread of the tubing coupling at the wellhead, thus achieving the connection and fixation of the full-bore plug valve 5 and the tubing. Then, the switch knob 12 of the full-bore plug valve 5 is rotated, which drives the ball plug 13 inside the full-bore plug valve 5 to rotate, thereby closing the internal passage of the full-bore plug valve 5, thus completing the emergency spraying operation at the wellhead.

[0032] Example 2: A quick-release device for minor well repair operations mentioned in this invention includes a fixing mechanism 9, a rotating sub 1, a turbine 2, a worm gear 3, a fixed seat 4, a full-bore plug valve 5, a quick-release rotating arm 6, a rotary reducer 7, and a lifting mechanism 8. The lifting mechanism 8 is mounted on a Y-shaped bracket 10 of the well repair equipment via the fixing mechanism 9. The rotary reducer 7 is mounted on the upper end of the lifting mechanism 8, and the quick-release rotating arm 6 is mounted on the upper part of the rotary reducer 7. The outer end of the quick-release rotating arm 6 is fixedly connected to the fixed seat 4. The turbine 2 is mounted inside the fixed seat 4. The rotating sub 1 is mounted at the center of the turbine 2, and the lower end of the rotating sub 1 is movably connected to the full-bore plug valve 5. The worm gear 3 is mounted on one side of the turbine 2. The worm gear 3 is driven to rotate by a hydraulic cycloidal motor 33. The worm gear 3 drives the turbine 2 and the rotating sub 1 to rotate, thereby driving the full-bore plug valve 5 to rotate and connect to the tubing at the wellhead to complete the quick-release of the blowout.

[0033] The difference from Example 1 is: The outer hexagonal column 17 of the rotating sub 1 mentioned in this invention adopts an outer hexagonal column structure, which is used to cooperate with the hexagonal hole structure cavity of the turbine 2, and is used to quickly install the full-bore plug valve 5 directly above the oil pipe at the wellhead.

[0034] The above description is merely a partial preferred embodiment of the present invention. Any person skilled in the art can modify the above-described technical solutions or modify them into equivalent technical solutions. Therefore, any simple modifications or equivalent transformations made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A quick repair operation rapid spraying device comprising a fixing mechanism (9), characterized in that: Also include the rotating nipple (1), turbine (2), worm (3), fixed seat (4), full bore plug valve (5), the rotating arm (6), rotary reducer (7), lifting mechanism (8), the lifting mechanism (8) is installed on the well repair operation equipment through the fixed mechanism (9), the upper end of lifting mechanism (8) installs rotary reducer (7), installs the rotating arm (6) in the upper portion of rotary reducer (7), the outer end of the rotating arm (6) is fixedly connected fixed seat (4), the fixed seat (4) is installed turbine (2) in, the center of turbine (2) installs rotating nipple (1), the lower end of rotating nipple (1) is movably connected full bore plug valve (5);In one side of turbine (2) installs worm (3), worm (3) is driven to rotate by hydraulic cycloid motor (33), worm (3) drives turbine (2) and rotating nipple (1) to rotate, and then drives full bore plug valve (5) to rotate and is connected on the tubing of wellhead, completes the rapid blowout control of well blowout.

2. The device according to claim 1, characterized in that: The fixed seat (4) includes fixed seat body (4.1), first mounting seat (4.2), turbine installation cavity (4.3), worm installation cavity (4.4), second mounting seat (4.5), mounting screw hole (4.6), one end of the fixed seat body (4.1) is provided with the first mounting seat (4.2), which is installed at the outer end of the rotating arm (6) through the first mounting seat (4.2);The inner cavity of fixed seat body (4.1) is provided with worm installation cavity (4.4) for installing worm (3), and the outer end of worm (3) is connected with hydraulic cycloid motor (33), which is installed on the second mounting seat (4.5) outside worm installation cavity (4.4);The outer side of fixed seat body (4.1) is provided with turbine installation cavity (4.3), turbine (2) engaged with worm (3) is installed in turbine installation cavity (4.3), and the upper side of turbine installation cavity (4.3) is provided with a plurality of mounting screw holes (4.6) for installing gland (20) and fixed rotating nipple (1).

3. The device according to claim 2, characterized in that: The turbine (2) includes turbine body (2.1), turbine tooth (2.2), center rod body (2.3), multi-sided hole cavity (2.4), turbine mounting hole (2.5), the outer end of turbine body (2.1) is provided with turbine tooth (2.2) for cooperating with worm (3), the middle part of turbine body (2.1) is provided with center rod body (2.3) at both ends, multi-sided hole cavity (2.4) is arranged in center rod body (2.3) for cooperating and connecting with the outer multi-sided column (17) of rotating nipple (1), a plurality of turbine mounting holes (2.5) are arranged on the outer end face of center rod body (2.3) for connecting with fixed seat (4).

4. The device according to claim 3, characterized in that: The worm (3) comprises a worm body (3.1), a worm gear (3.2), a worm outer joint (3.3), a worm power end joint (3.4), the center of the worm body (3.1) is provided with the worm gear (3.2) for cooperating with the turbine (2), one end of the worm body (3.1) is provided with the worm outer joint (3.3), the other end is provided with the worm power end joint (3.4), and the worm power end joint (3.4) is connected with the output end of the hydraulic cycloid motor (33).

5. The device according to claim 4, characterized in that: The rotating section (1) comprises a rotating section body (1.1), an upper section clamp (15), a fixed disc (16), an outer polygonal column (17), and a lower male buckle (18), the upper end of the rotating section body (1.1) is provided with the upper section clamp (15), the lower part of the upper section clamp (15) is provided with the fixed disc (16) for connecting and cooperating with the gland (20) on the fixed seat (4), the lower part of the fixed disc (16) is provided with the outer polygonal column (17) for cooperating with the polygonal hole cavity (2.4) of the turbine (2), and the lower end of the rotating section body (1.1) is provided with the lower male buckle (18) for connecting with the upper end of the full-bore plug valve (5).

6. The device according to claim 5, characterized in that: The full-bore plug valve (5) comprises a plug valve body (5.1), a full-bore inner diameter (5.2), a valve seat (5.3), an upper female buckle (11), an on-off knob (12), a spherical plug (13), and a plug valve lower male buckle (14), the inner cavity of the plug valve body (5.1) is provided with the full-bore inner diameter (5.2), the middle part of the plug valve body (5.1) is provided with the valve seat (5.3), the valve seat (5.3) is provided with the spherical plug (13), the outer end of the spherical plug (13) is connected with the on-off knob (12), the upper end of the plug valve body (5.1) is provided with the upper female buckle (11) for connecting with the lower end of the rotating section (1), and the lower end is provided with the plug valve lower male buckle (14) for connecting with the blowout-preventing oil pipe.

7. The device according to claim 6, characterized in that: The lifting mechanism (8) comprises an upper pin shaft (40), a lower pin shaft (41), a lifting telescopic arm (42), a lifting telescopic cylinder (43), and a lifting mechanism body (44), the upper end of the lifting mechanism body (44) is connected with the lifting telescopic arm (42), the upper end of the lifting telescopic arm (42) is connected with the output shaft of the lifting telescopic cylinder (43) through the upper pin shaft (40), the outer wall of the lifting mechanism body (44) is connected with the lifting telescopic cylinder (43) through the lower pin shaft (41), the lifting telescopic arm (42) is driven to move up and down by the lifting telescopic cylinder (43), and the upper end of the lifting telescopic arm (42) is connected with the slewing reducer (7).

8. The device according to claim 7, characterized in that: The rotating arm (6) comprises a rotating telescopic arm (34), a rotating telescopic cylinder (36), a rotating arm (37), a fifth internal hexagonal cylindrical head screw (38), and a connecting pipe (39). The rotating arm (37) is in an L-shaped structure, one end of the rotating arm (37) is connected to the output end of the rotary speed reducer (7), the other end of the rotating arm (37) is fixedly installed with the rotating telescopic cylinder (36), the front end of the rotating telescopic cylinder (36) is provided with the rotating telescopic arm (34), the front end of the rotating telescopic arm (34) is connected with the first mounting base (4.2) of the fixed base (4), the rotating arm (37) and the connecting pipe (39) are respectively connected and positioned with the upper and lower ends of the rotary speed reducer (7) through the fifth internal hexagonal cylindrical head screw (38), and the connecting pipe (39) is installed in the inner cavity of the lifting telescopic arm (42) and is used for positioning and fixing the lower end of the rotary speed reducer (7).

9. The device according to claim 8, characterized in that: The fixing disc (16) of the rotating nipple (1) is connected with the gland (20) and the turbine (2) through the fourth internal hexagonal cylindrical head screw (19) penetrating through the mounting screw hole (4.6), and the first tapered roller bearing (23) is installed between the turbine (2) and the gland (20) respectively.

10. The method of using the quick repair and emergency spraying device of claim 9, characterized in that: The method comprises the following processes: After the well repair operation equipment is arranged in place, the blowout prevention and the blowout prevention work are debugged: The rotating telescopic arm (34) is driven to extend by adjusting the rotating telescopic cylinder (36), the fixed base (4) is driven to move forward, the center of the full-bore plug valve (5) is located above the oil pipe at the well mouth, the lifting telescopic arm (42) is driven to press down by driving the lifting telescopic cylinder (43), the female buckle of the oil pipe joint at the well mouth is matched with the plug valve lower male buckle (14) of the full-bore plug valve (5), the worm (3) is driven to rotate by driving the hydraulic cycloid motor (33), the turbine (2) is driven to rotate by the worm (3), the outer multi-sided column (17) of the rotating nipple (1) is driven to rotate by the multi-sided cavity (2.4) of the turbine (2), the full-bore plug valve (5) is driven to rotate, the lifting telescopic arm (42) is driven to follow the load to move downward by the lifting telescopic cylinder (43), the plug valve lower male buckle (14) of the full-bore plug valve (5) is tightened with the female buckle of the oil pipe joint at the well mouth, then the switch knob (12) of the full-bore plug valve (5) is rotated, the ball plug (13) in the full-bore plug valve (5) is rotated, the internal passage of the full-bore plug valve (5) is closed, the installation step of the blowout prevention and the blowout prevention work is completed; The fixing disc (16) of the rotating nipple (1) is connected with the gland (20) and the turbine (2) through the fourth internal hexagonal cylindrical head screw (19) penetrating through the mounting screw hole (4.6), and the first tapered roller bearing (23) is installed between the turbine (2) and the gland (20) respectively. Then, by rotating the switch knob (12) of the full-bore plug valve (5), the internal passage of the full-bore plug valve (5) is opened; then the hydraulic cycloid motor (33) is driven in reverse to rotate the worm (3), which drives the turbine (2) to rotate in reverse, thereby driving the full-bore plug valve (5) to rotate in reverse, at the same time, the lifting telescopic cylinder (43) drives the lifting telescopic arm (42) to follow the load up, until the plug valve lower male buckle (14) of the full-bore plug valve (5) is completely separated from the tubing coupling female buckle at the wellhead, then continue to drive the lifting telescopic cylinder (43) to drive the lifting telescopic arm (42) to follow the load up to the original height, then drive the rotary reducer (7) to rotate in reverse, drive the blowout prevention rotary arm (6) and the full-bore plug valve (5) to rotate to the original position, thereby completing the disassembly work of the blowout prevention debugging; II. In the process of well repair work, when the wellhead appears well surge and blowout: By driving the rotary reducer (7), the blowout prevention rotary arm (6) is rotated to the full-bore plug valve (5) located directly above the wellhead central tubing, the lifting telescopic cylinder (43) drives the lifting telescopic arm (42) to press down to the plug valve lower male buckle (14) of the full-bore plug valve (5) to the female buckle of the wellhead central tubing coupling, then drive the hydraulic cycloid motor (33) to rotate the worm (3), and then the worm (3) drives the turbine (2) to rotate, the turbine (2) drives the rotary short section (1) and the full-bore plug valve (5) to rotate, at the same time, the lifting telescopic cylinder (43) drives the lifting telescopic arm (42) to follow the load down, until the plug valve lower male buckle (14) of the full-bore plug valve (5) is tightened with the tubing coupling female buckle at the wellhead, realizing the connection and fixation of the full-bore plug valve (5) and the tubing; then, rotate the switch knob (12) of the full-bore plug valve (5) again, the switch knob (12) drives the ball plug (13) inside the full-bore plug valve (5) to rotate, thereby closing the internal passage of the full-bore plug valve (5), thus completing the rapid blowout prevention work at the wellhead.

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