High-pressure sealing wellhead Christmas tree device

Abstract

The utility model provides a high-pressure sealing wellhead Christmas tree device, which relates to the field of Christmas trees and comprises a Christmas tree component and a supporting and fixing component detachably connected with the Christmas tree component. The Christmas tree assembly includes: a casing head assembly; the tubing head assembly is connected to the top of the casing head assembly through a flange plate; the supporting and fixing assembly comprises a fixing support detachably installed on the periphery of the casing head assembly. The guide sliding block is mounted in the fixed bracket in a sliding manner; the clamping ring II is fixed at the tail end of the guide sliding block; the supporting and fixing assembly further comprises a guiding sliding groove formed in the inner side of the fixing support. The supporting and fixing assembly further comprises a clamping ring I arranged above the clamping ring II and a guiding sliding groove formed in the inner side of the fixing support. The detachable supporting and fixing assembly is arranged to clamp and fix the casing head assembly, the stability of the casing head assembly is guaranteed, meanwhile, the supporting and fixing assembly can be detached and replaced conveniently, and normal use of the casing head assembly cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of wellhead trees, specifically a high-pressure sealed wellhead wellhead tree device. Background Technology

[0002] A high-pressure sealed wellhead Christmas tree is a device installed at the wellhead of an oil or gas well. Its main purpose is to control the flow of fluids within the well, prevent high-pressure oil and gas leakage, and ensure wellhead safety. It withstands and regulates the high pressure within the well by sealing the annular space between the tubing and casing, while also providing functions such as operating valves and connecting testing tools. It is one of the core pieces of equipment in oil and gas production.

[0003] Currently, the wellhead equipment is placed directly on the ground during use, with the wellhead positioned opposite the tree. During extraction operations, the entire equipment is prone to tipping over or shaking, affecting its operation.

[0004] The existing technical solution (CN221942392U) discloses an oil wellhead device including a casing head assembly, a tubing head assembly, a valve disc assembly, oil pressure gauges, a connector, and stabilizer bars. The casing head assembly is equipped with a tubing head assembly, five valve disc assemblies are mounted on the casing head assembly, and two valve disc assemblies are mounted on the tubing head assembly. Oil pressure gauges are installed on both sides of the tubing head assembly. A connector is connected to the bottom of the casing head assembly, and stabilizer bars are threaded onto both sides of the connector. By rotating the screw, the device can be fixed in a designated position, thereby enhancing its stability and preventing it from tipping over.

[0005] However, during use, the sleeve head assembly is fixed to the ground via the connector at the bottom, but the connector is not easy to separate from the sleeve head assembly, and it is inconvenient to replace the connector if it fails. Utility Model Content

[0006] The purpose of this utility model is to provide a high-pressure sealed wellhead production tree device to solve the problems mentioned in the background art and overcome its technical defects.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-pressure sealed wellhead production tree device, including a production tree assembly and a support and fixing assembly detachably connected to the production tree assembly;

[0008] The wellhead assembly includes: a casing head assembly; and a tubing head assembly connected to the top of the casing head assembly via a flange;

[0009] The support and fixing assembly includes: a fixing bracket detachably installed around the sleeve head assembly; a guide slider slidably installed inside the fixing bracket; a second clamping ring fixed to the end of the guide slider; and a first clamping ring disposed above the second clamping ring.

[0010] As a further embodiment of this utility model, the supporting and fixing assembly further includes: a guide groove formed inside the fixing bracket; and a clamping bidirectional lead screw rotatably installed inside the guide groove.

[0011] As a further improvement of this utility model: the guide slider is threadedly connected to the clamping bidirectional lead screw via a threaded sleeve, and the guide slider is slidably connected to the fixed bracket via a guide groove.

[0012] As a further embodiment of this utility model, the support and fixing assembly further includes a connector fixed between the second clamping ring and the first clamping ring, wherein the inner diameters of the second clamping ring and the first clamping ring are respectively adapted to the outer diameters of the sleeve head assembly at different heights.

[0013] As a further embodiment of this utility model, the supporting and fixing assembly further includes: a driven bevel gear fixed to the end of the clamping bidirectional lead screw; an output bevel gear meshing with the side of the driven bevel gear; an output shaft fixed inside the output bevel gear; and a clamping motor fixed to one end of the output shaft.

[0014] As a further improvement of this utility model: the clamping motor is fixedly mounted on the side of the fixed bracket by bolts, and the four corners of the fixed bracket are also penetrated by soil-inserting nails, and a connecting spring is connected between the soil-inserting nails and the fixed bracket.

[0015] As a further embodiment of this utility model, the wellhead assembly further includes a valve disc assembly connected to the left and right sides of the tubing head assembly via flanges.

[0016] As a further embodiment of this utility model, the wellhead assembly further includes an oil pressure gauge connected to the middle of the valve disc assembly via a flange, the oil pressure gauge being used to detect pressure values.

[0017] Compared with the prior art, the beneficial effects of this utility model include:

[0018] 1. The present invention, through the fixed bracket, can drive the guide slider to move under the action of the bidirectional screw, thereby driving the outer periphery of the clamping ring and the clamping ring pair of sleeve head assemblies to come into contact with each other, clamping the sleeve head assembly and improving the stability of the sleeve head assembly;

[0019] 2. This utility model clamps and fixes the sleeve head assembly by setting a detachable support and fixing component, which ensures the stability of the sleeve head assembly and facilitates the disassembly and replacement of the support and fixing component without affecting the normal use of the sleeve head assembly. Attached Figure Description

[0020] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0021] Figure 1 The schematic diagram shows an overall structural schematic diagram according to one embodiment of the present invention;

[0022] Figure 2 The schematic diagram shows the structure of the wellhead assembly and the support and fixing assembly according to one embodiment of the present invention when separated;

[0023] Figure 3 The schematic diagram shows a half-sectional view of a fixing bracket according to one embodiment of the present invention.

[0024] Figure 4 The schematic diagram shows an output bevel gear according to one embodiment of the present invention.

[0025] The diagram is labeled as follows: 1. Christmas tree assembly; 101. Casing head assembly; 102. Tubing head assembly; 103. Valve disc assembly; 104. Oil pressure gauge; 2. Support and fixing assembly; 201. Fixing bracket; 202. Clamping ring one; 203. Clamping ring two; 204. Guide slider; 205. Clamping double-acting screw; 206. Guide groove; 207. Connector; 208. Soil nail; 209. Connecting spring; 210. Clamping motor; 211. Output bevel gear; 212. Output shaft; 213. Driven bevel gear. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0028] Example 1:

[0029] Please see Figures 1-4This is the first embodiment of the present invention.

[0030] This embodiment provides a high-pressure sealed wellhead production tree device, including a production tree assembly 1 and a support and fixing assembly 2 detachably connected to the production tree assembly 1;

[0031] The wellhead assembly 1 includes: a casing head assembly 101; and a tubing head assembly 102 connected to the top of the casing head assembly 101 via a flange;

[0032] The support and fixing assembly 2 includes: a fixing bracket 201 detachably installed around the sleeve head assembly 101; a guide slider 204 slidably installed inside the fixing bracket 201; a clamping ring 203 fixed to the end of the guide slider 204; and a clamping ring 202 disposed above the clamping ring 203.

[0033] Specifically, the support and fixing component 2 also includes: a guide groove 206 formed inside the fixing bracket 201; and a clamping bidirectional lead screw 205 rotatably installed inside the guide groove 206.

[0034] Furthermore, the guide groove 206 is used to guide the guide slider 204.

[0035] Specifically, the guide slider 204 is threadedly connected to the clamping bidirectional lead screw 205 via a threaded sleeve, and the guide slider 204 is slidably connected to the fixed bracket 201 via the guide groove 206.

[0036] Furthermore, two sets of guide sliders 204 are installed on the same set of clamping bidirectional lead screws 205 via threaded sleeves. The threads of the clamping bidirectional lead screws 205 connected to the threaded sleeves on the two sets of guide sliders 204 are opposite in direction, so that the guide sliders 204 on the clamping bidirectional lead screws 205 can move in opposite directions.

[0037] Specifically, the support and fixing component 2 also includes a connector 207 fixed between the clamping ring 203 and the clamping ring 202, wherein the inner diameters of the clamping ring 203 and the clamping ring 202 are respectively adapted to the outer diameters of the sleeve head assembly 101 at different heights.

[0038] Furthermore, the outer diameter of the sleeve head assembly 101 varies depending on the height of the clamping position, while the clamping ring 203 and clamping ring 202 are set with different inner diameters depending on the clamping position, so that the clamping ring 203 and clamping ring 202 can contact the outer periphery of the sleeve head assembly 101, clamp the sleeve head assembly 101, and prevent the sleeve head assembly 101 from tipping over.

[0039] Specifically, the support and fixing assembly 2 also includes: a driven bevel gear 213 fixed to the end of the clamping bidirectional lead screw 205; an output bevel gear 211 meshing with the side of the driven bevel gear 213; an output shaft 212 fixed inside the output bevel gear 211; and a clamping motor 210 fixed to one end of the output shaft 212.

[0040] Furthermore, the power output end of the clamping motor 210 can drive the output shaft 212 to rotate, thereby driving the driven bevel gear 213 to rotate through the output bevel gear 211 on the output shaft 212. Under the action of the teeth, the driven bevel gear 213 can drive the clamping bidirectional lead screw 205 connected to it to rotate, thereby making the clamping bidirectional lead screw 205 rotate synchronously.

[0041] Specifically, the clamping motor 210 is fixedly installed on the side of the fixed bracket 201 by bolts. The four corners of the fixed bracket 201 are also penetrated by soil-inserting nails 208, and a connecting spring 209 is connected between the soil-inserting nails 208 and the fixed bracket 201.

[0042] Furthermore, the soil nail 208 can fix the fixing bracket 201 in the soil, making it convenient to limit the position of the fixing bracket 201.

[0043] In this embodiment, the fixed bracket 201 can drive the guide slider 204 to move under the action of the bidirectional screw 205, thereby causing the clamping ring 203 and the clamping ring 202 to come into contact with each other on the outer periphery of the sleeve head assembly 101, clamping the sleeve head assembly 101 and improving the stability of the sleeve head assembly 101.

[0044] Example 2:

[0045] Please see Figures 1-2 This is the second embodiment of the present invention, which provides a high-pressure sealed wellhead production tree device.

[0046] Specifically, the wellhead assembly 1 also includes a valve disc assembly 103 connected to the left and right sides of the tubing head assembly 102 via flanges.

[0047] Furthermore, the sliding rod of the nodding machine is connected between the casing head assembly 101 and the tubing head assembly 102. When the nodding machine moves upward, it will drive the sliding rod to move upward. The upward movement of the sliding rod can carry the oil in the well upward, so that the oil enters the tubing head assembly 102.

[0048] Specifically, the tree assembly 1 also includes an oil pressure gauge 104 connected to the middle of the valve disc assembly 103 via a flange. The oil pressure gauge 104 is used to detect pressure values.

[0049] Furthermore, the oil pressure gauge 104 can detect the internal pressure value. By setting a detachable support and fixing component 2 to clamp and fix the sleeve head assembly 101, the stability of the sleeve head assembly 101 is ensured, while the support and fixing component 2 can be easily disassembled and replaced without affecting the normal use of the sleeve head assembly 101.

[0050] In this embodiment, the internal pressure value can be viewed through the oil pressure gauge 104.

[0051] Working principle: The fixed support 201 is placed at the wellhead. A through hole is opened in the middle of the fixed support 201 for placing the Christmas tree assembly 1. The soil nail 208 can fix the fixed support 201 in the soil, which facilitates the limiting of the fixed support 201. After the Christmas tree assembly 1 is placed in the middle of the fixed support 201, the clamping motor 210 is started. The power output end of the clamping motor 210 can drive the output shaft 212 to rotate, thereby driving the driven bevel gear 213 to rotate through the output bevel gear 211 on the output shaft 212. Under the action of the teeth, the driven bevel gear 213 can drive the output shaft 212 to rotate. The clamping bidirectional lead screw 205 connected to it is rotated, so that the clamping bidirectional lead screw 205 rotates synchronously. Two sets of guide sliders 204 are installed on the same set of clamping bidirectional lead screws 205 through threaded sleeves. The threads of the clamping bidirectional lead screws 205 connected to the threaded sleeves on the two sets of guide sliders 204 are opposite to the direction of the threads, so that the guide sliders 204 on the clamping bidirectional lead screws 205 can move in opposite directions, so that the clamping ring 203 and the clamping ring 202 can come into contact with the outer periphery of the sleeve head assembly 101, clamp the sleeve head assembly 101, and prevent the sleeve head assembly 101 from tipping over.

[0052] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high-pressure sealed wellhead Christmas tree device, characterized in that, Includes a tree assembly (1) and a support and fixing assembly (2) detachably connected to the tree assembly (1); The wellhead assembly (1) includes: a casing head assembly (101); and a tubing head assembly (102) connected to the top of the casing head assembly (101) via a flange. The support and fixing assembly (2) includes: a fixing bracket (201) detachably installed around the sleeve head assembly (101); a guide slider (204) slidably installed inside the fixing bracket (201); a clamping ring two (203) fixed to the end of the guide slider (204); and a clamping ring one (202) disposed above the clamping ring two (203).

2. The high-pressure sealed wellhead production tree device according to claim 1, characterized in that, The support and fixing assembly (2) further includes: a guide groove (206) formed inside the fixing bracket (201); and a clamping bidirectional lead screw (205) rotatably installed inside the guide groove (206).

3. The high-pressure sealed wellhead production tree device according to claim 2, characterized in that, The guide slider (204) is threadedly connected to the clamping bidirectional lead screw (205) through a threaded sleeve, and the guide slider (204) is slidably connected to the fixed bracket (201) through the guide groove (206).

4. The high-pressure sealed wellhead production tree device according to claim 3, characterized in that, The support and fixing assembly (2) further includes a connector (207) fixed between the clamping ring two (203) and the clamping ring one (202), wherein the inner diameters of the clamping ring two (203) and the clamping ring one (202) are respectively adapted to the outer diameters of the sleeve head assembly (101) at different heights.

5. A high-pressure sealed wellhead production tree device according to claim 4, characterized in that, The support and fixing assembly (2) further includes: a driven bevel gear (213) fixed to the end of the clamping bidirectional lead screw (205); an output bevel gear (211) meshing with the side of the driven bevel gear (213); an output shaft (212) fixed inside the output bevel gear (211); and a clamping motor (210) fixed to one end of the output shaft (212).

6. A high-pressure sealed wellhead production tree device according to claim 5, characterized in that, The clamping motor (210) is fixedly installed on the side of the fixed bracket (201) by bolts. The four corners of the fixed bracket (201) are also penetrated by soil nails (208), and a connecting spring (209) is connected between the soil nails (208) and the fixed bracket (201).

7. A high-pressure sealed wellhead production tree device according to claim 6, characterized in that, The tree assembly (1) further includes a valve disc assembly (103) connected to the left and right sides of the tubing head assembly (102) via flanges.

8. A high-pressure sealed wellhead production tree device according to claim 7, characterized in that, The tree assembly (1) further includes an oil pressure gauge (104) connected to the middle of the valve disc assembly (103) via a flange, the oil pressure gauge (104) being used to detect pressure values.

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