Gas well pressure guiding and measuring device

Abstract

The utility model discloses a gas well pressure guiding and measuring device which is characterized in that a wellhead device is arranged at a wellhead and comprises a main pipe which extends into a well and extends along the axial direction of the gas well, and a first branch pipe and a second branch pipe which are respectively arranged on the main pipe in a communicated manner; the gas well pressure guiding and measuring device comprises a pressure guiding pipe, one end of the pressure guiding pipe is communicated with the first branch pipe, the other end of the pressure guiding pipe extends upwards and extends out of a wellhead, and a pressure gauge is arranged on the pressure guiding pipe and located outside the wellhead; and the fixed connection device is fixedly connected between the second branch pipe and the pressure guide pipe so as to fix and support the pressure guide pipe. According to the utility model, the pressure guide pipe can transmit the pressure in the well to the pressure gauge outside the well, and the pressure gauge measures the well pressure, so that the pressure in the well can be conveniently monitored. The fixed connection device can fix and support the pressure guide pipe, and connection looseness of the wellhead device and the pressure guide pipe caused by different vibration frequencies between the wellhead device and the pressure guide pipe is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of gas well pressure guiding and measuring devices, and particularly to a gas well pressure guiding and measuring device. Background Technology

[0002] The pressure-conducting pipe serves as a crucial channel for pressure transmission in gas wells. One end extends into the well and connects to the wellhead equipment, while the other end extends outside the wellhead and is equipped with a pressure gauge. The pressure-conducting pipe transmits the pressure inside the well to the pressure gauge outside, thereby allowing for the measurement of the pressure inside the well.

[0003] However, vibrations can occur during wellhead equipment operation, potentially causing loosening of the connection between the pressure guide pipe and the wellhead equipment, leading to leaks. This poses a serious threat to safe production and results in inaccurate pressure readings from the pressure gauges, leading to deviations in gas well analysis. Utility Model Content

[0004] This invention provides a gas well pressure guiding and measuring device, which improves the connection stability between the pressure guiding pipe and the wellhead device on the basis of guiding and measuring the pressure of the gas well, and avoids the connection between the two becoming loose.

[0005] This utility model provides a gas well pressure testing device, wherein a wellhead device is provided at the wellhead, the wellhead device including a main pipe extending into the well and along the axial direction of the gas well, and a first branch pipe and a second branch pipe respectively connected to the main pipe; the gas well pressure testing device includes:

[0006] A pressure-conducting pipe, one end of which is connected to the first branch pipe, and the other end extending upwards and outwards to the wellhead, wherein a pressure gauge is installed on the pressure-conducting pipe at a position outside the wellhead; and

[0007] A fixing device is fixed between the second branch pipe and the pressure guiding pipe to provide fixed support for the pressure guiding pipe.

[0008] In one embodiment, the fixed connection device includes a plurality of links arranged in sequence and a steering gear rotatably mounted between two adjacent links;

[0009] The steering gear and the connecting rod are connected by a threaded limit connection.

[0010] In one embodiment, the steering gear and the connecting rod are connected by bolts for limiting connection. The steering gear is provided with two mutually perpendicular mounting holes, and the connecting rod is provided with a threaded hole at the end connected to the steering gear.

[0011] After passing through the mounting hole, the bolt connects to the internal thread on the threaded hole.

[0012] Furthermore, the connecting rod and the steering gear are provided with a toothed structure, and after the toothed structure on the connecting rod and the steering gear is engaged, it is then locked by bolts.

[0013] In another embodiment, the steering gear is an "L"-shaped tube, and internal threads are provided in the tube openings at both ends of the steering gear;

[0014] The connecting rod has an external thread at one end for connecting to the steering gear, and the connecting rod and the steering gear are connected by the internal and external threads.

[0015] In one embodiment, clamp assemblies are provided at both ends of the fixing device.

[0016] In one embodiment, the clamp assembly includes two opposing arc-shaped clamps connected by a threaded connector.

[0017] In one embodiment, a pressure relief valve is also provided on the pressure guide pipe downstream of the pressure gauge, and the outlet end of the pressure relief valve is connected to the gas-liquid separator.

[0018] In one embodiment, a valve is also provided on the pressure-conducting pipe and upstream of the pressure gauge.

[0019] In one implementation, the wellhead device is a tree.

[0020] Compared with the prior art, the advantages of this utility model are:

[0021] 1. The pressure-conducting pipe can transmit the pressure inside the well to a pressure gauge located outside the well, and the pressure gauge can measure the well pressure, thus making it convenient to monitor the pressure inside the well.

[0022] The fixing device can fix and support the pressure guide pipe, and prevent the connection between the wellhead device and the pressure guide pipe from becoming loose due to different vibration frequencies.

[0023] 2. This embodiment changes the relative position between the connecting rod and the steering gear to change the relative position and attitude between the clamp assemblies at both ends. This makes it easier to install the clamp assemblies on the pressure guide pipe and the second branch pipe, and also allows for the adaptive fixing and support of the pressure guide pipe and the second branch pipe with different positional relationships.

[0024] 3. In this embodiment, a pressure relief valve is also provided on the pressure guide pipe downstream of the pressure gauge, and the outlet end of the pressure relief valve is connected to the gas-liquid separator.

[0025] When the pressure gauge reads that the pressure inside the well is higher than the preset value, the pressure relief valve can be opened to release pressure and improve safety. After the pressure relief valve is opened, the gas in the pressure guide pipe can enter the gas-liquid separator for separation so that the natural gas or oil can be recovered and reused.

[0026] 4. In this embodiment, a valve is also provided on the pressure-conducting pipe and upstream of the pressure gauge. When the valve is open, the air pressure in the pressure-conducting pipe can be transmitted to the pressure gauge, at which time pressure measurement can be performed; when pressure measurement is not required, the valve can be closed to prevent gas leakage in the pressure-conducting pipe, thereby improving airtightness. Attached Figure Description

[0027] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the gas well pressure measuring device.

[0029] Figure 2 This is a schematic diagram of the fixed connection device;

[0030] Figure 3 This is a schematic diagram of the structure of two adjacent connecting rods and the steering gear at one angle;

[0031] Figure 4 This is a schematic diagram of the structure of two adjacent connecting rods and the steering gear at another angle;

[0032] Figure label:

[0033] 1. Pressure guiding pipe;

[0034] 2. Fixing device; 21. Connecting rod;

[0035] 22. Steering gear; 221. Mounting hole; 222. Bolt; 223. Steering surface; 224. Corrugated tooth structure;

[0036] 23. Clamp assembly; 231. Arc-shaped clamp; 232. Threaded connector;

[0037] 3. Valves; 4. Pressure gauges; 5. Pressure relief valves; 6. Gas-liquid separators;

[0038] 100. Wellhead assembly; 101. Main pipe; 102. First branch pipe; 103. Second branch pipe;

[0039] 200. Gas well. Detailed Implementation

[0040] The following will be combined with the appendix Figures 1 to 4 The present invention will be further described below.

[0041] In the process of oil and gas extraction, wellhead devices 100, such as Christmas trees, are usually used. The wellhead device 100 is set at the wellhead. The wellhead device 100 includes a main pipe 101 that extends into the well and along the axial direction of the gas well 200, and a first branch pipe 102 and a second branch pipe 103 that are respectively connected to the main pipe 101.

[0042] This utility model embodiment provides a gas well pressure measuring device, such as... Figure 1 As shown, the gas well pressure guiding and measuring device includes a pressure guiding pipe 1 and a fixing device 2 for fixing and supporting the pressure guiding pipe 1.

[0043] One end of the pressure-conducting pipe 1 is located inside the well and is connected to the first branch pipe 102 in a communicative manner. The other end extends upward and out of the wellhead. A pressure gauge 4 is installed on the pressure-conducting pipe 1 at a position outside the wellhead. The pressure-conducting pipe 1 can transmit the pressure inside the well to the pressure gauge 4 located outside the well, and the pressure gauge 4 measures the well pressure, thereby facilitating the monitoring of the pressure inside the well.

[0044] The fixing device 2 is fixedly connected between the second branch pipe 103 and the pressure guiding pipe 1 to fix and support the pressure guiding pipe 1, so as to prevent the connection between the two from becoming loose due to the different vibration frequencies between the wellhead device 100 and the pressure guiding pipe 1.

[0045] In this embodiment, as Figure 2 As shown, the fixed connection device 2 includes a plurality of connecting rods 21 arranged in sequence, and a steering gear 22 rotatably installed between two adjacent connecting rods 21; the steering gear 22 and the connecting rods 21 are connected by a threaded limit connection.

[0046] Regarding the connection between link 21 and steering gear 22, two implementation methods are provided below:

[0047] The first implementation method, such as Figure 3 and Figure 4 As shown, the steering gear 22 and the connecting rod 21 are connected by a bolt 222 for limiting. The steering gear 22 is provided with two mutually perpendicular mounting holes 221. The end of the connecting rod 21 that is connected to the steering gear 22 is provided with a threaded hole. After the bolt 222 passes through the mounting hole 221, it is connected to the internal thread on the threaded hole.

[0048] During installation, first rotate the connecting rod 21 on the steering gear 22 to a suitable angle, and then use bolts 222 to lock and fix it to fix the relative position between the connecting rod 21 and the steering gear 22.

[0049] The threaded hole on the connecting rod 21 is located on the end face of the connecting rod 21 and is perpendicular to the end face.

[0050] The connecting rod 21 and the steering gear 22 are equipped with a toothed structure 224. When the toothed structure 224 on the connecting rod 21 and the steering gear 22 engages, it is then locked by bolts 222.

[0051] The steering gear 22 has two mutually perpendicular steering surfaces 223, and two mounting holes 221 perpendicularly penetrate the two steering surfaces 223 in a corresponding manner.

[0052] The concave-convex tooth structure 224 provided on the steering surface 223 can be an external tooth formed on the edge of the steering surface 223, and the concave-convex tooth structure 224 on the connecting rod 21 is a corresponding external tooth.

[0053] In the second embodiment, the steering gear 22 can also be an "L" shaped tube (not shown in the figure), with internal threads provided in the two ends of the tube of the steering gear 22; an external thread is formed on the end of the connecting rod 21 used to connect to the steering gear 22, and the connecting rod 21 and the steering gear 22 are threadedly connected through the internal and external threads.

[0054] With this configuration, the connecting rod 21 on the steering gear 22 can be operated and rotated to adjust and fix the position and attitude of the connecting rod 21, thereby changing the relative position of the two ends of the fixed device 2.

[0055] In this embodiment, there are three connecting rods 21 and two steering gears 22. The connecting rod 21 located in the middle is an "L"-shaped bent rod.

[0056] In this embodiment, as Figure 1 and Figure 2 As shown, clamping assemblies 23 are respectively provided at both ends of the fixing device 2. One clamping assembly 23 is installed on the pressure guiding pipe 1, and the other clamping assembly 23 is installed on the second branch pipe 103 in the wellhead device 100.

[0057] This embodiment changes the relative position and orientation of the clamp assemblies 23 at both ends by changing the relative position relationship between the connecting rod 21 and the steering gear 22. This makes it easier to install the clamp assembly 23 on the pressure guide pipe 1 and the second branch pipe 103, and also allows for the adaptive fixing and support of the pressure guide pipe 1 and the second branch pipe 103 with different positional relationships.

[0058] The clamp assembly 23 includes two opposing arc-shaped clamps 231, which are locked together by a threaded connector 232.

[0059] In this embodiment, a pressure relief valve 5 is also provided on the pressure guide pipe 1 downstream of the pressure gauge 4, and the outlet end of the pressure relief valve 5 is connected to the gas-liquid separator 6.

[0060] When the pressure measured by pressure gauge 4 is higher than the preset value, pressure relief valve 5 can be opened to relieve pressure and improve safety. After opening pressure relief valve 5, the gas in pressure guide pipe 1 can enter gas-liquid separator 6 for separation so that natural gas or oil can be recovered and reused.

[0061] In this embodiment, a valve 3 is also provided on the pressure-conducting pipe 1 and upstream of the pressure gauge 4. When the valve 3 is open, the air pressure in the pressure-conducting pipe 1 can be transmitted to the pressure gauge 4, at which time pressure measurement can be performed; when pressure measurement is not required, the valve 3 can be closed to prevent gas leakage in the pressure-conducting pipe 1, thereby improving airtightness.

[0062] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pressure guide pressure device for a gas well, characterized in that, The wellhead is provided with a wellhead device, which comprises a main pipe extending into the well and along the axial direction of the gas well, and a first branch pipe and a second branch pipe respectively communicating with the main pipe; the gas well pressure guide pressure measuring device comprises: a pressure guide pipe, one end of which communicates with the first branch pipe, and the other end of which extends upward and out of the wellhead, a pressure gauge being arranged on the pressure guide pipe at a position outside the wellhead; and a fixing device fixed between the second branch pipe and the pressure guide pipe to fix and support the pressure guide pipe.

2. The gas well pressure conducting pressure measuring device according to claim 1, characterized in that, The fixing device comprises a plurality of connecting rods arranged in sequence, and a steering device rotatably mounted between two adjacent connecting rods. The steering device and the connecting rod are threadedly connected.

3. The gas well pressure conducting pressure measuring device according to claim 2, characterized in that The steering device and the connecting rod are threadedly connected by a bolt, the steering device is provided with two mounting holes perpendicular to each other, and one end of the connecting rod connected with the steering device is provided with a threaded hole. The bolt is connected with the internal thread of the threaded hole after passing through the mounting hole.

4. The gas well pressure conducting pressure measuring device according to claim 3, characterized in that, The connecting rod and the steering device are provided with concave-convex tooth structure matched with each other, and the concave-convex tooth structure of the connecting rod and the steering device is engaged, and then locked by the bolt.

5. The gas well pressure conducting pressure measuring device according to claim 2, characterized in that, The steering device is an "L" shaped pipe, and the two ends of the steering device are provided with internal threads. One end of the connecting rod for connecting the steering device is provided with external threads, and the connecting rod and the steering device are threadedly connected by the internal threads and the external threads.

6. A gas well pressure-conducting pressure gauge according to any one of claims 1-5, characterized in that, The fixing device is provided with a clamp assembly at each end.

7. A gas well pressure-conducting pressure-measuring device according to claim 6, characterized in that The clamp assembly comprises two opposite arc-shaped clamps, and the two arc-shaped clamps are connected by a threaded connecting piece.

8. The gas well pressure conducting pressure measuring device of claim 1, wherein, A pressure relief valve is further arranged on the pressure guide pipe downstream of the pressure gauge, and the outlet end of the pressure relief valve is connected with a gas-liquid separator.

9. The gas well pressure-conducting pressure-measuring device according to claim 8, characterized in that, A valve is further arranged on the pressure guide pipe upstream of the pressure gauge.

10. The gas well pressure conducting pressure measuring device of claim 1, wherein, The wellhead device is a Christmas tree.

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