Cock quick-mounting device for well drilling and workover operation

Abstract

The utility model relates to a drilling workover operation cock quick-mounting device which comprises an O-shaped fixing sleeve located on an inner ring and an operating hand wheel located on an outer ring, the O-shaped fixing sleeve and the operating hand wheel are connected and fixed through a connecting rod, a plurality of threaded through holes are evenly distributed in the O-shaped fixing sleeve in the radial direction, lead screws are installed in the threaded through holes, and the operating hand wheel and the O-shaped fixing sleeve are connected through a connecting rod. A nut is arranged at the outer end of the lead screw, a tooth block is arranged at the inner end of the lead screw, and the nut is located between the O-shaped fixing sleeve and the operating hand wheel. The cock quick mounting device for well drilling and workover operation is simple to operate and convenient to disassemble, can realize quick and efficient movement and quick mounting of cocks with different sizes, saves the mounting time of the cocks, reduces the window period of a pipe column without inner blowout prevention tool control, can effectively avoid the occurrence of dangerous cases such as overflow and well kick during construction, and improves the construction efficiency. And the well control safety operation coefficient is improved.

Description

Technical Field

[0001] This utility model relates to the field of oilfield operation equipment, and more specifically, to a drilling and well repair operation plug installation device. Background Technology

[0002] Plugs are crucial well control devices used in oil and gas well operations to promptly control the water pressure in the tubing during emergencies such as overflows and kicks. Quickly and effectively installing plugs can prevent blowout accidents. The wellhead string consists of tubing of varying sizes, often requiring plugs of different sizes on-site. Emergency plug installation can cause delays. Plugs are typically cylindrical with smooth outer walls, primarily made of steel alloy, and are heavy, making them difficult to maneuver, install, and align. Construction problems often arise due to inconsistent plug sizes, difficulty in applying force, and their weight, making emergency plug installation challenging and preventing timely well shut-in. This not only increases the risk of mechanical injury to workers but also significantly raises the probability of well control incidents. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a drilling and well workover operation plug quick-installation device, which can effectively solve the problem of delayed quick-installation time due to the different plug sizes and the problem of no leverage point when operators grab the plug.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a drilling and workover operation plug installation device is constructed, including an "O"-shaped fixing sleeve located on the inner ring and an operating handwheel located on the outer ring. The "O"-shaped fixing sleeve and the operating handwheel are connected and fixed by a connecting rod. The "O"-shaped fixing sleeve is provided with a plurality of threaded through holes evenly distributed along the radial direction. A lead screw is installed in the threaded through hole. A nut is provided at the outer end of the lead screw and a toothed block is provided at the inner end of the lead screw. The nut is located between the "O"-shaped fixing sleeve and the operating handwheel.

[0005] In the above scheme, the tooth block and the lead screw are connected by a ball joint, and the diameter of the ball joint is larger than the diameter of the threaded through hole.

[0006] In the above scheme, the "O"-shaped fixing sleeve is concentrically set with the operating handwheel.

[0007] In the above scheme, the two ends of the connecting rod are welded and fixed to the "O"-shaped fixing sleeve and the operating handwheel.

[0008] In the above scheme, the inner side of the tooth block is arc-shaped.

[0009] The drilling and well workover operation plug installation device of this utility model has the following beneficial effects:

[0010] 1. This utility model uses two coaxial steel rings. The inner steel ring is an "O"-shaped fixing sleeve, and the outer steel ring is an operating handwheel. The outer operating handwheel serves as the force point during operation. This not only facilitates the quick movement of the cock by the operator, but also enables the rapid locking, unlocking, and locking of the cock by rotating the operating handwheel during installation, disassembly, and re-locking. This greatly facilitates the work of installing and unloading the cock, effectively saves time for emergency cock installation, and ensures the safety of well control work.

[0011] 2. The screw hole and the screw rod that are matched with this utility model can change the size of the circular clamping ring formed by the tooth block by turning the screw rod left or right, so as to clamp different sizes of plugs. One set of quick-connect device can be used for plugs of different sizes, saving the time of quick-connecting plugs and drilling platform space, avoiding the clutter of the drilling platform, and improving the standardization of the site.

[0012] 3. The toothed block designed in this utility model increases the contact area between the snap-fit ​​device and the plug, thereby increasing the clamping force of the circular clamping ring formed by the toothed block, ensuring the stability of the plug during handling, installation, snapping, and fastening, and better guaranteeing the stability of the snap-fit ​​device.

[0013] 4. The hexagonal nut at the outer end of the lead screw designed in this utility model is located between the "O"-type fixing sleeve and the operating handwheel, which facilitates the placement of the plug clamping tool. Moreover, when the hydraulic pliers tighten the plug, the steel wire rope suspending the hydraulic pliers will not affect the operating handwheel that rotates with the plug. Most importantly, it protects the lead screw and prevents it from being bumped and deformed, which would cause the plug clamping tool to malfunction.

[0014] 5. This utility model uses a designed toothed block and lead screw connected by a ball joint. When the lead screw rotates, the toothed block does not rotate with the lead screw. For different sizes of cocks, the toothed block can better fit and contact the outer wall of the cock body, avoiding the situation where the toothed block and the cock body do not make proper contact. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the drilling and well workover operation plug quick-installation device of this utility model;

[0017] Figure 2 This is a schematic diagram of the fastening accessories of the drilling and well workover operation plug quick-installation device of this utility model;

[0018] Figure 3 This is a schematic diagram of the spherical joint of the rotary plug installation device for drilling and well workover operations of this utility model;

[0019] Figure 4 This is a schematic diagram showing the usage status of the drilling and well repair operation plug installation device of this utility model. Detailed Implementation

[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1-4 As shown, the drilling and workover operation plug quick-installation device of this utility model includes two coaxial steel rings. The inner steel ring is an "O"-shaped fixing sleeve 1, and the outer steel ring is an operating handwheel 2. The "O"-shaped fixing sleeve 1 and the operating handwheel 2 are welded and fixed together by a connecting rod 3. The outer operating handwheel 2 serves as the force point during operation, which not only facilitates the quick movement of the plug 9 by the operator, but also enables the plug 9 to be quickly engaged, disengaged, and aligned by rotating the operating handwheel 2 during installation, disassembly, and alignment. This greatly facilitates the operation of engaging and disengaging the plug 9, effectively saves time in quick-installation of the plug 9, and ensures the safety of well control operations.

[0022] The “O” type fixing sleeve 1 has four threaded through holes 4 evenly distributed radially. A screw 5 is installed in the threaded through hole 4. The thread of the screw 5 is engaged with the thread of the threaded through hole 4. By turning the screw 5 left or right, the size of the circular clamping ring formed by the tooth block 6 is changed, clamping different sizes of plugs 9. One set of quick-connect device can be used for plugs 9 of different sizes, saving time and drilling platform space for quick-connecting plugs 9, avoiding clutter on the drilling platform, and improving on-site standardization.

[0023] The lead screw 5 has a hexagonal nut 7 at its outer end and a toothed block 6 at its inner end, with the inner side of the toothed block 6 being arc-shaped. The toothed block 6 increases the contact area between the quick-connect device and the plug 9, thereby increasing the clamping force of the circular clamping ring formed by the toothed block 6, ensuring the stability of the plug 9 during handling, installation, snapping, and tightening, and better guaranteeing the stability of the quick-connect device.

[0024] The hexagonal nut 7 is positioned between the "O"-shaped retaining sleeve 1 and the operating handwheel 2, which facilitates the placement of the plug 9 for quick installation. Moreover, when the hydraulic pliers tighten the plug 9, the steel wire rope suspending the hydraulic pliers will not affect the operating handwheel 2 as the plug 9 rotates. Most importantly, it protects the lead screw 5, preventing it from being bumped and deformed, which would render the plug 9 for quick installation unusable.

[0025] The tooth block 6 is connected to the lead screw 5 through a ball joint 8. When the lead screw 5 rotates, the tooth block 6 does not rotate with the lead screw 5. For different sizes of plugs 9, the tooth block 6 can better fit and contact the outer wall of the plug body, avoiding the situation where the tooth block 6 and the plug body do not make proper contact.

[0026] The method of using this utility model is as follows:

[0027] 1. Select the corresponding plug 9 according to the wellhead tubing specifications. Before operation, install the quick-installation device on the outer wall of the plug 9 and tighten all the screws 5 with an adjustable wrench.

[0028] 2. When installing the plug 9, two to three workers should hold the operating handwheel 2 and move the plug 9 to the wellhead. The internal and external fitters should adjust the pipe wrench or hydraulic wrench.

[0029] 3. After the wellhead operators work together to connect the plug 9 to the wellhead tubing, the operators turn the operating handwheel 2 to the right to tighten the plug 9 until it is secure.

[0030] 4. The internal and external fitters use pipe wrenches or hydraulic wrenches to further tighten the valve 9, close the valve 9, and connect the pressure well pipeline to proceed with the next step of construction;

[0031] 5. After the construction is normal, use pipe wrenches or hydraulic pliers to loosen the valve 9. Two to three workers should hold the operating handwheel 2 and move the valve 9 to the valve rack to wait.

[0032] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A device for quickly installing and removing a plug during drilling and well workover operations, characterized in that, It includes an "O"-shaped retaining sleeve located on the inner ring and an operating handwheel located on the outer ring. The "O"-shaped retaining sleeve and the operating handwheel are connected and fixed by a connecting rod. The "O"-shaped retaining sleeve has a plurality of evenly distributed threaded through holes along the radial direction. A lead screw is installed in the threaded through holes. A nut is provided at the outer end of the lead screw and a tooth block is provided at the inner end of the lead screw. The nut is located between the "O"-shaped retaining sleeve and the operating handwheel.

2. The drilling and workover operation plug-in device according to claim 1, characterized in that, The tooth block and the lead screw are connected by a ball joint, the diameter of which is larger than the diameter of the threaded through hole.

3. The drilling and workover operation plug-in device according to claim 1, characterized in that, The "O"-shaped fixing sleeve is concentrically set with the operating handwheel.

4. The drilling and workover operation plug-in device according to claim 1, characterized in that, The two ends of the connecting rod are welded and fixed to the "O"-shaped fixing sleeve and the operating handwheel.

5. The drilling and workover operation plug-in device according to claim 1, characterized in that, The inner side of the tooth block is arc-shaped.

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