A drilling and well workover emergency connection plug valve device
Patent Information
- Application Number
- CN202522079057.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-26
AI Technical Summary
1、作业人员会因为湿滑（溢流出的液体）而摔、碰伤
1、有悬挂旋塞功能，可有效避免作业人员受到伤害（不用人工抬至水眼）；
Smart Images
Figure CN224705760U_ABST
Abstract
Description
Technical Field
[0001] This utility model pertains to emergency rescue devices in the petroleum industry, specifically a plug valve device for emergency connection during drilling and well repair. Background Technology
[0002] During drilling and well workover operations, pressure imbalances caused by various factors can lead to emergencies and accidents such as overflow (a precursor to a blowout) and blowout. Current technology involves manually lifting (or holding) the plug valve to the water inlet for connection, lead-in connection, and then reconnection. However, this method has the following problems: 1. Workers may slip and fall or get injured due to the slippery surface (from the spilled liquid). 2. Workers may be injured by impact pressure and corrosive liquid flow. 3. The impact and upward force of the ejected liquid flow will make it impossible for the operator to engage or engage the valve, resulting in failure to install the plug valve and ultimately causing a catastrophic blowout accident (the time from the discovery of the overflow to the blowout is very short, generally only about 30 seconds, and the ejected liquid column becomes uncontrollable when it exceeds two meters). Utility Model Content
[0003] The purpose of this utility model is to provide a drilling and well workover emergency connection plug valve device, which has a reasonable structure, can effectively and reliably control dangerous situations, prevent the occurrence of tragic well blowout accidents, and provide strong protection for the safety of drilling and well workover operations.
[0004] The purpose of this utility model is achieved as follows: A drilling and workover quick-connect plug valve device consists of a vertical lifting device, a horizontal telescopic power transmission device, and a plug valve suspension and rotation device. The rotating flange support set on the upper part of the lifting sub-cylinder of the vertical lifting device installed on the drilling platform is fixedly connected to the rear end of the horizontal telescopic power transmission device. The outer end of the telescopic sub-cylinder of the horizontal telescopic power transmission device is sequentially fixed to a vertically downward centering support arm and a gear frame. The outer end of the gear frame is fixedly connected to the plug valve suspension and rotation device. The drive gear of the gear frame meshes with the driven gear at the lower end of the plug suspension cylinder of the plug valve suspension and rotation device. The adjusting nut set at the lower end of the centering support arm cooperates with the centering screw. The outer end of the centering screw cooperates with the outer wall of the drill pipe coupling of the well blowout on the drilling platform.
[0005] This utility model is installed on the drilling platform two meters away from the water hole (blowout) via a connecting flange.
[0006] Work process: 1. After suspending the stopcock valve that matches the water eye coupling, use the vertical lifting device, horizontal telescopic power transmission device and other systems to center the utility model in the correct position (since the height of the water eye varies depending on the model). 2. Retract the telescopic drum and rotate it 180° to leave normal working space for drilling and unloading (about 2 meters, depending on the space of different drilling rigs), and lock the locking bolts to be ready to install the plug at any time. 3. In the event of an overflow or blowout, loosen the locking bolt and quickly rotate the handle 180°. 4. Turn the second handwheel to move the telescopic drum forward until the centering device is pressed against the outer wall of the water eye coupling; 5. Quickly rotate the third handwheel. The driven gear is quickly rotated through the gears, transmission pins and other components in the protective box. The guide, torque key and guide groove of the plug cylinder make the plug rotate and engage (at this time, the upper connector male thread is in the unengaged downward direction, and the lower plug valve male thread is in the downward direction and engaged with the water eye). 6. After completing the installation, close the stopcock valve to finish the stopcock valve installation operation.
[0007] In reality, the actual steps for installing the plug valve are only three: 3-5. The faster the action, the shorter the time required. This is because there is a constant risk of a blowout due to increased well pressure and failure to install the plug valve, which could lead to a runaway blowout and a serious accident.
[0008] The advantages of this utility model are as follows: 1. It has a suspension valve function, which can effectively prevent workers from being injured (no need to manually lift it to the water hole); 2. It has an anti-overhead collision function (in addition to the device's own weight, it is also mechanically connected to the drilling platform); 3. It has remote buckle-on, buckle-initiating, and buckle-on functions, and can be buckled quickly and effectively through mechanical transmission; 4. The quick and efficient loading of the plug (preliminary experimental results show a speed of 15 seconds) can effectively control blowouts; 5. It occupies a small space, is easy to install, and is flexible in operation; 6. Even if the power and gas supply to the drilling platform is cut off after a blowout, this machine can still be used effectively due to its purely mechanical design.
[0009] This invention can completely solve all the problems associated with manually installing plug valves, greatly improving the effectiveness and reliability of such installations. Attached Figure Description
[0010] The present invention will now be further described with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the main structure of this utility model. Figure 2 This is a schematic diagram of the vertical lifting device. Figure 3 This is a schematic diagram of a horizontal telescopic power transmission device. Figure 4 This is a schematic diagram of the suspension and rotation device for a plug valve. Detailed Implementation
[0011] A drilling and well workover emergency connection plug valve device, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the system consists of a vertical lifting device, a horizontal telescopic power transmission device, and a plug valve suspension and rotation device. The rotating flange support 2 on the upper part of the lifting sub-cylinder 1 of the vertical lifting device, which is installed on the drilling platform, is fixedly connected to the rear end of the horizontal telescopic power transmission device. The outer end of the telescopic sub-cylinder 8 of the horizontal telescopic power transmission device is sequentially fixed to a vertically downward centering support arm 9 and a gear frame 25. The outer end of the gear frame 25 is fixed to the plug valve suspension and rotation device. The drive gear 10 of the gear frame 25 meshes with the driven gear 12 at the lower end of the plug suspension cylinder 11 of the plug valve suspension and rotation device. The adjusting nut 13 at the lower end of the centering support arm 9 cooperates with the centering screw 14. The outer end of the centering screw 14 cooperates with the outer wall of the drill pipe coupling of the blowout nozzle 15 on the drilling platform. The vertical lifting device has the following structure: a lifting sub-cylinder 1 is slidably mounted inside a lifting main cylinder 3. A mounting box 4 is located on the upper part of the lifting main cylinder 3. Inside the mounting box 4 is a gear transmission system driven by a first handwheel 5. The output gear 16 of the gear transmission system meshes with a rack 17 mounted on the lifting sub-cylinder 1. A rotating flange support 2 is mounted on the upper part of the lifting sub-cylinder 1 via a bearing 18 within the mounting chamber. A rotating flange is located at the upper end of the rotating flange support 2. Two semi-circular pressure caps on the upper opening of the lifting sub-cylinder 1 engage with the stop of the rotating flange support 2, thus rotatably constraining the rotating flange support 2 onto the lifting sub-cylinder 1. Locking bolts 6 are installed in bolt holes in the upper wall of the lifting sub-cylinder 1, with the ends of the locking bolts 6 engaging with the outer cylindrical surface of the stop of the rotating flange support 2. An axial guide groove is provided on the wall of the lifting main cylinder 3, and a limiting pin 19 on the lifting sub-cylinder 1 engages with the guide groove. The lifting cylinder 3 is fixed to the drilling platform via the connecting flange 7 at its lower end.The structure of the horizontal telescopic power transmission device is as follows: a rotating flange support 2 of the vertical lifting device is fixed to a horizontal main cylinder 20. A telescopic sub-cylinder 8 is slidably installed inside the horizontal main cylinder 20. A guide groove is provided on the cylinder wall of the horizontal main cylinder 20. An anti-rotation pin 21 is provided at the inner end of the telescopic sub-cylinder 8 and cooperates with the guide groove. A lead screw 23 driven by a second handwheel 22 is installed inside the horizontal main cylinder 20 through a bearing bracket. A lead screw nut 24 fixed at the inner end of the telescopic sub-cylinder 8 cooperates with the lead screw 23. A downwardly vertical centering support arm 9 and a gear frame 25 are sequentially fixed to the outer end of the telescopic sub-cylinder 8. An upright gear shaft is set at the outer end of the gear frame 25 through a bearing. A fourth bevel gear is fixed on the gear shaft that passes through the top and bottom surfaces of the gear frame 25, respectively. The gearbox, which is fixed to the upper part of the inner end of the horizontal mother cylinder 20, contains a first bevel gear 29 mounted on a shaft via a third handwheel 28. The axis of the tube shaft 30, which is mounted on the horizontal mother cylinder 20 via a bearing seat, is located in the same vertical plane as the axis of the horizontal mother cylinder 20. The first bevel gear 29 meshes with the second bevel gear 31 mounted on the inner end of the tube shaft 30. A gear shaft 32 is slidably mounted inside the tube shaft 30. The third bevel gear 33, which is fixed to the outer end of the gear shaft 32 inside the tube shaft 30, meshes with the fourth bevel gear 26. Corresponding guide grooves are provided on the wall of the tube shaft 30 that meshes with the gear shaft 32. A guide pin 34, which is provided on the inner end of the gear shaft 32 inside the tube shaft 30, meshes with the corresponding guide groove. The structure of the plug valve suspension rotating connection device is as follows: an annular baffle 35 is provided on the outer wall of the lower end of the plug suspension cylinder 11, which is open at the bottom. A bracket ring 36 is installed on the baffle 35. The support ring of the bracket ring 36 is engaged with the retaining ring 37 fixed to the outer wall of the plug suspension cylinder 11 through a bearing. The inner diameter of the support ring 36 is dynamically engaged with the outer diameter of the plug suspension cylinder 11. The drive gear 10 meshes with the driven gear 12 fixed to the lower end of the plug suspension cylinder 11. A suspension connecting cylinder 38 is installed in the center hole of the cap at the upper end of the plug suspension cylinder 11. The boss provided in the middle of the suspension connecting cylinder 38 is engaged with the inner wall of the cap. A hanging ring 39 is installed on the outer wall of the suspension connecting cylinder 38, which extends out of the central hole, via a left-hand thread. The inner wall of the suspension connecting cylinder 38 is connected to the connecting pipe 40 of the plug suspension joint via a right-hand thread. The plug suspension joint has a structure where a positioning plate 41 and a connecting pipe 40 are sequentially arranged on the upper end face of a truncated cone-shaped connector 42, with a through hole in the center of the connecting pipe 40. Symmetrical guide grooves at both ends of the positioning plate 41 engage with corresponding guide rails 43 on the inner wall of the plug suspension cylinder 11. A thread is provided on the conical surface of the connector 42 to engage with the plug valve 27 interface. The outer end of the gear frame 25 is fixed to the ring support 36 of the plug valve suspension rotation device. The outer end of the locking handle 44 on the hanging ring 39 is fixed to the protective box 45 of the gear frame 25. Symmetrical handles 46 are provided on the outer walls of both sides of the horizontal mother cylinder 20.
Claims
1. A drilling and well workover emergency connection plug valve device, characterized in that: Composed of a vertical lifting device, a horizontal telescopic power transmission device, and a plug valve suspension and rotation device, the vertical lifting device is mounted on the drilling platform. The rotating flange support (2) on the upper part of the lifting sub-cylinder (1) of the vertical lifting device is fixedly connected to the rear end of the horizontal telescopic power transmission device. The telescopic sub-cylinder (8) of the horizontal telescopic power transmission device is sequentially fixed to the vertically downward centering support arm (9) and the gear frame (25). The outer end of the gear frame (25) is fixed to the plug valve suspension and rotation device. The drive gear (10) of the gear frame (25) meshes with the driven gear (12) at the lower end of the plug suspension cylinder (11) of the plug valve suspension and rotation device. The adjusting nut (13) at the lower end of the centering support arm (9) cooperates with the centering screw (14). The outer end of the centering screw (14) cooperates with the outer wall of the drill pipe coupling of the well blowout (15) on the drilling platform.
2. The drilling and well workover emergency connection plug valve device according to claim 1, characterized in that: The vertical lifting device has a structure in which a lifting sub-cylinder (1) is slidably installed inside the lifting mother cylinder (3). An installation box (4) is set on the upper part of the lifting mother cylinder (3). A gear transmission system driven by a first handwheel (5) is set in the installation box (4). The output gear (16) of the gear transmission system meshes with the rack (17) set on the lifting sub-cylinder (1). A rotating flange support (2) is installed in the installation chamber set on the upper part of the lifting sub-cylinder (1) through a bearing (18). A rotating flange is set on the upper end of the rotating flange support (2). Two semi-circular pressure caps are set on the upper opening of the lifting sub-cylinder (1) and cooperate with the stop of the rotating flange support (2) to rotate and constrain the rotating flange support (2) on the lifting sub-cylinder (1).
3. A drilling and well workover emergency connection plug valve device according to claim 2, characterized in that: in A locking bolt (6) is installed in the screw hole on the upper end of the cylinder wall of the lifting sub-cylinder (1). The end of the locking bolt (6) is engaged with the outer cylindrical surface of the stop of the rotating flange support (2).
4. The drilling and well workover emergency connection plug valve device according to claim 2, characterized in that: An axial guide groove is provided on the wall of the lifting mother cylinder (3), and a limiting pin (19) provided on the lifting daughter cylinder (1) is dynamically engaged with the guide groove.
5. A drilling and well workover emergency connection plug valve device according to claim 2, characterized in that: The lifting cylinder (3) is fixed to the drilling platform via the connecting flange (7) at its lower end.
6. The drilling and well workover emergency connection plug valve device according to claim 1, characterized in that: The structure of the horizontal telescopic power transmission device is as follows: a rotating flange support (2) of the vertical lifting device is fixed to a horizontal main cylinder (20). A telescopic sub-cylinder (8) is slidably installed inside the horizontal main cylinder (20). A guide groove is provided on the cylinder wall of the horizontal main cylinder (20). An anti-rotation pin (21) provided at the inner end of the telescopic sub-cylinder (8) cooperates with the guide groove. A lead screw (23) driven by a second handwheel (22) is installed inside the horizontal main cylinder (20) through a bearing bracket. A lead screw nut (24) fixed at the inner end of the telescopic sub-cylinder (8) cooperates with the lead screw (23). A downwardly vertical centering support arm (9) and a gear frame (25) are sequentially fixed to the outer end of the telescopic sub-cylinder (8). An upright gear shaft is set at the outer end of the gear frame (25) through a bearing. A fourth bevel gear (26) is fixed on the gear shaft that passes through the top and bottom surfaces of the gear frame (25). The drive gear (10) is fixed to the gearbox at the upper end of the horizontal mother cylinder (20), and a first bevel gear (29) is mounted on the shaft of the third handwheel (28). The axis of the tube shaft (30) mounted on the horizontal mother cylinder (20) through the bearing seat is located in the same vertical plane as the axis of the horizontal mother cylinder (20). The first bevel gear (29) meshes with the second bevel gear (31) mounted at the inner end of the tube shaft (30). A gear shaft (32) is slidably mounted inside the tube shaft (30). The third bevel gear (33) fixed at the outer end of the gear shaft (32) inside the tube shaft (30) meshes with the fourth bevel gear (26). A corresponding guide groove is provided on the wall of the tube shaft (30) that meshes with the gear shaft (32). A guide pin (34) provided at the inner end of the gear shaft (32) inside the tube shaft (30) meshes with the corresponding guide groove.
7. A drilling and well workover emergency connection plug valve device according to claim 1, characterized in that: The structure of the plug valve suspension rotating connection device is as follows: an annular baffle (35) is provided on the outer wall of the lower end of the plug suspension cylinder (11) which is open at the bottom. A bracket ring (36) is installed on the baffle (35). The bracket ring (36) is connected to the baffle ring (37) fixed to the outer wall of the plug suspension cylinder (11) through a bearing. The inner diameter of the bracket ring (36) is in dynamic fit with the outer diameter of the plug suspension cylinder (11). The drive gear (10) meshes with the driven gear (12) fixed to the lower end of the plug suspension cylinder (11). A suspension connecting cylinder (38) is installed in the center hole of the cap at the upper end of the plug suspension cylinder (11). The boss provided in the middle of the suspension connecting cylinder (38) is connected to the inner wall of the cap. The hanging ring (39) is installed on the outer wall of the suspension connecting cylinder (38) extending from the central hole by a left-hand thread. The inner wall of the suspension connecting cylinder (38) is connected to the connecting pipe (40) of the plug suspension joint by a right-hand thread. The structure of the plug suspension joint is that a positioning plate (41) and a connecting pipe (40) are arranged sequentially on the upper end face of the truncated cone-shaped connector (42). A through hole is provided in the center of the connecting pipe (40). Symmetrical guide grooves are provided at both ends of the positioning plate (41) and corresponding guide rails (43) are provided on the inner wall of the plug suspension cylinder (11). A thread is provided on the conical surface of the connector (42) to cooperate with the interface of the plug valve (27).
8. A drilling and well workover emergency connection plug valve device according to claim 1 or 7, characterized in that: The outer end of the gear carrier (25) is fixedly connected to the bracket ring (36) of the plug valve suspension rotating device.
9. A drilling and well workover emergency connection plug valve device according to claim 7, characterized in that: The outer end of the locking handle (44) of the hanging ring (39) is fixed to the protective box (45) of the gear frame (25).
10. A drilling and well workover emergency connection plug valve device according to claim 1, characterized in that: Symmetrical handles (46) are provided on the outer walls of both sides of the horizontal mother cylinder (20).