Quick connecting device for wellhead device

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a quick connecting device for a wellhead device, which comprises a variable lifting flange assembly, a fixed lifting flange assembly and a quick locking device. The variable lifting flange assembly comprises a bottom stud bolt, a bottom heavy hexagonal nut, a variable lifting flange and a sealing ring; the bottom of the variable lifting flange is connected with the casing head assembly or the middle casing head four-way assembly; sealing rings are arranged on the inner side surfaces of the variable lifting flanges; the fixed lifting flange assembly comprises a fixed lifting flange, a top stud bolt and a top heavy hexagonal nut; the fixed lifting flange is connected with an operation blowout preventer; and the fixed lifting flange and the variable lifting flange are sealed through a sealing ring and are fixedly connected through a quick locking device. Different variable lifting flange assemblies can be selected and matched according to different casing head assemblies and casing head four-way assemblies, the fixed lifting flange assemblies do not need to be disassembled, and the variable lifting flange assembly has the advantages of being rapid in installation, convenient to maintain, low in cost and the like.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, and more specifically to a quick connection device for wellhead equipment. Background Technology

[0002] At the drilling and completion site, to meet the drilling team's requirements for the bottom casing head assembly and intermediate casing head four-way assembly, various height specifications of riser flanges are needed. On-site installation and disassembly are time-consuming and labor-intensive, affecting installation efficiency and increasing costs. Therefore, it is necessary to design a quick-connect device for wellhead equipment. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a quick connection device for wellhead equipment.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A quick-connect device for wellhead equipment includes a variable rise flange assembly, a fixed rise flange assembly, and a quick-locking device;

[0006] The variable rise flange assembly includes a bottom threaded bolt, a bottom heavy-duty hexagonal nut, a variable rise flange, and a sealing ring; the bottom of the variable rise flange is connected to the sleeve head assembly or the intermediate sleeve head four-way assembly via the bottom threaded bolt and the bottom heavy-duty hexagonal nut; a sealing ring is provided on the inner side of the variable rise flange;

[0007] The fixed riser flange assembly includes a fixed riser flange, a top threaded bolt, and a top heavy-duty hexagonal nut; the fixed riser flange is connected to the blowout preventer via the top threaded bolt and the top heavy-duty hexagonal nut; the fixed riser flange and the variable riser flange are sealed by a sealing ring and fixedly connected by a quick-locking device.

[0008] This invention designs a quick-connect device as a variable rise flange assembly and a fixed rise flange assembly, which can be quickly connected via a quick-locking device. Different specifications of the variable rise flange assembly can be selected based on the equipment installed at the bottom of the quick-connect device, such as a sleeve head assembly or an intermediate sleeve head four-way assembly. The fixed rise flange assembly does not need to be disassembled. The variable rise flange assembly and the fixed rise flange assembly can be quickly connected via the quick-locking device, which greatly improves the installation efficiency of the quick-connect device. Furthermore, only different specifications of the variable rise flange assembly need to be designed, saving significant production costs.

[0009] Furthermore, the quick-locking device includes two or more arc-shaped locking plates, which are fixed together by fastening bolts. The inner side of the locking plates is provided with a groove for locking the edge of the variable riser flange and the bottom fixed riser flange.

[0010] Furthermore, a bottom metal sealing gasket ring is provided between the bottom of the variable rise flange and the sleeve head assembly or the intermediate sleeve head four-way assembly.

[0011] Furthermore, a top metal sealing gasket ring is provided between the top of the fixed riser flange and the working blowout preventer.

[0012] Furthermore, the sealing rings include, but are not limited to, lip seals, O-rings with retaining rings, metal seals, and packing seals.

[0013] Technical effects of this utility model:

[0014] Compared with the prior art, the quick connection device for wellhead equipment of this utility model allows for the selection of different variable riser assemblies at the drilling and completion site after the blowout preventer is fastened to the top of the fixed riser flange assembly. This eliminates the need to disassemble the fixed riser flange assembly, thus meeting the site requirements. It has the advantages of quick installation, easy maintenance, and low cost. Attached Figure Description

[0015] Figure 1 This is a front view of the quick connection device for wellhead equipment according to this utility model;

[0016] Figure 2 This is a top view of the quick connection device for wellhead equipment according to this utility model;

[0017] Figure 3 This is a longitudinal sectional view of the quick connection device for wellhead equipment according to this utility model;

[0018] Figure 4 This utility model relates to a quick connection device for wellhead equipment. Figure 3 Enlarged view of the structure of part D;

[0019] Figure 5 This is a schematic diagram illustrating the structural principle of another embodiment of the quick connection device for wellhead equipment according to this utility model.

[0020] In the diagram: 1. Bottom threaded bolt; 2. Bottom heavy-duty hex nut; 3. Bottom metal sealing gasket; 4. Variable rise flange; 5. Sealing ring; 6. Quick-lock device; 7. Fixed rise flange; 8. Top metal sealing gasket; 9. Top threaded bolt; 10. Top heavy-duty hex nut; A. Casing head assembly; B. Intermediate casing head four-way assembly; C. Work blowout preventer; 61. Locking plate; 62. Fastening bolt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Example 1:

[0023] like Figure 1-4 As shown, this embodiment relates to a quick connection device for wellhead equipment, including a variable rise flange assembly, a fixed rise flange assembly, and a quick locking device 6.

[0024] The variable rise flange assembly includes a bottom threaded bolt 1, a bottom heavy-duty hexagonal nut 2, a bottom metal sealing gasket 3, a variable rise flange 4, and a sealing ring 5. The bottom of the variable rise flange 4 is connected to the sleeve head assembly A or the intermediate sleeve head four-way assembly B via the bottom threaded bolt 1 and the bottom heavy-duty hexagonal nut 2, and a bottom metal sealing gasket 3 is provided between the bottom of the variable rise flange 4 and the sleeve head assembly A or the intermediate sleeve head four-way assembly B; a sealing ring 5, which is a lip seal, is provided on the inner side of the variable rise flange 4.

[0025] Specifically, as one implementation method, such as Figure 3 As shown, the bottom of the variable rise flange 4 is connected to the sleeve head assembly A.

[0026] As another implementation method, such as Figure 5 As shown, the bottom of the variable rise flange 4 is connected to the intermediate sleeve head tee assembly B, and the intermediate sleeve head tee assembly B is connected to the sleeve head assembly A.

[0027] The fixed riser flange assembly includes a fixed riser flange 7, a top metal sealing gasket ring 8, a top threaded bolt 9, and a top heavy-duty hexagonal nut 10. The fixed riser flange 7 is connected to the working blowout preventer C via the top threaded bolt 9 and the top heavy-duty hexagonal nut 10, and a top metal sealing gasket ring 8 is provided between the top of the fixed riser flange 7 and the working blowout preventer C. The fixed riser flange 7 and the variable riser flange 4 are sealed by a sealing ring 5 and are fixedly connected by a quick-locking device 6.

[0028] The quick-locking device 6 includes two or more arc-shaped locking plates 61, which are fixed together by fastening bolts 62. The inner side of the locking plate 61 is provided with a groove for locking the edges of the variable rise flange 4 and the bottom fixed rise flange 7. The quick-locking device 6 can quickly connect the variable rise flange assembly and the fixed rise flange assembly together.

[0029] This utility model installs a working blowout preventer C (BOP) on top of the quick-connect device to ensure that the bottom height baseline of the combined working blowout preventer C (double-gate blowout preventer + single-gate blowout preventer + annular blowout preventer) meets the drilling team's requirements; depending on the drilling and completion site, different variable rise flange assemblies can be selected according to different casing head assemblies A and intermediate casing head four-way assemblies B, which has the characteristics of quick installation and low cost.

[0030] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of this utility model should fall within the patent protection scope of this utility model.

Claims

1. A quick-connect device for wellhead equipment, characterized in that, Includes a variable rise flange assembly, a fixed rise flange assembly, and a quick-locking device; The variable rise flange assembly includes a bottom threaded bolt, a bottom heavy-duty hexagonal nut, a variable rise flange, and a sealing ring; the bottom of the variable rise flange is connected to the sleeve head assembly or the intermediate sleeve head four-way assembly via the bottom threaded bolt and the bottom heavy-duty hexagonal nut; a sealing ring is provided on the inner side of the variable rise flange; The fixed riser flange assembly includes a fixed riser flange, a top threaded bolt, and a top heavy-duty hexagonal nut; the fixed riser flange is connected to the blowout preventer via the top threaded bolt and the top heavy-duty hexagonal nut; the fixed riser flange and the variable riser flange are sealed by a sealing ring and fixedly connected by a quick-locking device.

2. The quick connection device for wellhead equipment according to claim 1, characterized in that, The quick-locking device includes two or more arc-shaped locking plates, which are fixed together by fastening bolts. The inner side of the locking plates is provided with a groove for locking the edge of the variable riser flange and the bottom fixed riser flange.

3. The quick connection device for wellhead equipment according to claim 1, characterized in that, A bottom metal sealing gasket ring is provided between the bottom of the variable rise flange and the sleeve head assembly or the intermediate sleeve head four-way assembly.

4. The quick connection device for wellhead equipment according to claim 1, characterized in that, A top metal sealing gasket ring is installed between the top of the fixed riser flange and the working blowout preventer.

5. The quick-connect device for wellhead equipment according to any one of claims 1-4, characterized in that, The sealing rings include lip seals, O-rings with retaining rings, metal seals, and packing seals.

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