Wellhead device end face annulus pressure real-time monitoring device

Abstract

The utility model discloses a wellhead device end face annulus pressure real-time monitoring device. The wellhead device end face annulus pressure real-time monitoring device comprises a wellhead device and a monitoring assembly arranged on the wellhead device. The monitoring assembly comprises a meter valve, a pressure monitoring unit installed on a connector on one side of the meter valve and a pressure relief unit installed on a connector on the other side of the meter valve. According to the wellhead device end face annulus pressure real-time monitoring device, the pressure monitoring assembly is arranged on the wellhead device, and real-time, accurate and active monitoring of the wellhead device end face annulus pressure is achieved; the safety of the wellhead area is improved, and the accident risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of annular space pressure monitoring, and in particular relates to a real-time monitoring device for the annular space pressure at the end face of a wellhead device. Background Art

[0002] The wellhead device is composed of a Christmas tree, a tubing head and a casing head, and is an important device to ensure the normal production of oil (gas) wells / water injection wells. The tubing head is a transition structure connecting the top casing head and the Christmas tree, including a tubing spool and a tubing hanger to hang the tubing and seal the annular space between the tubing and the casing. The casing head is connected below the tubing head, including a casing spool and a casing hanger to connect the surface casing and seal the annular space between the casings.

[0003] The various parts of the offshore oil wellhead device are connected together by bolts. Generally, there is no pressure between the connection ends. However, in daily production, it is often found that oil and gas leaks occur at the connection ends and the four-way accessories such as the pressure test hole / top screw, especially at the tubing head. How to actively monitor the end face annulus pressure, analyze the cause of the leakage, determine the leakage location, and pre-treat in advance is very necessary.

[0004] In summary, the utility model designs a real-time monitoring device for the end face annulus pressure of a wellhead device to solve the above problems. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the utility model is to provide a real-time monitoring device for the end face annulus pressure of a wellhead device.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A real-time monitoring device for the annular pressure at the end face of a wellhead device comprises a wellhead device and a monitoring component arranged thereon; wherein:

[0008] The monitoring component comprises a gauge valve, a pressure monitoring unit installed on an interface on one side of the gauge valve, and a pressure relief unit installed at an interface on the other side of the gauge valve.

[0009] Furthermore, the pressure monitoring unit includes a pressure gauge, a data processing module disposed in the inner cavity of the pressure gauge, and a pressure sensor, a wireless transmission component, and a power supply component electrically connected to the data processing module;

[0010] The wireless transmission component transmits the pressure signal monitored by the pressure monitoring unit to the remote control terminal in real time.

[0011] Furthermore, it also includes a speaker, which is arranged in the inner cavity of the pressure gauge and is electrically connected to the data processing module.

[0012] Furthermore, the pressure relief unit includes a pressure relief pipeline and a closed drain tank; one end of the pressure relief pipeline is connected to the lower interface of the gauge valve, and the other end is connected to the liquid inlet of the closed drain tank.

[0013] Furthermore, the gauge valve comprises a valve body and a plurality of interfaces arranged thereon; one end of the valve body is connected to the pressure test hole at the upper end surface of the wellhead device.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a real-time monitoring device for the end face annulus pressure of a wellhead device. By setting a pressure monitoring component on the wellhead device, the real-time and accurate active monitoring of the end face annulus pressure of the wellhead device is realized; the safety of the wellhead area is improved, and the risk of accidents is reduced;

[0016] The utility model discloses a real-time monitoring device for the annulus pressure at the end face of a wellhead device, which realizes timely pressure relief of the annulus through a pressure relief unit and can also sample the annulus to determine the leakage location; the device also has the advantages of simple operation and rapid response, and is suitable for wellhead devices of various sizes and different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a real-time monitoring device for the end face annulus pressure of a wellhead device.

[0018] Figure 2 The figure is a simplified diagram of the internal circuit of the monitoring component of the utility model.

[0019] Description of reference numerals:

[0020] 1. Wellhead device; 2. Monitoring component; 3. Gauge valve;

[0021] 4. Pressure monitoring unit; 41. Pressure gauge; 42. Data processing module; 43. Power supply component; 44. Speaker; 45. Pressure sensor; 46. Wireless transmission component;

[0022] 5. Pressure relief unit; 51. Pressure relief pipeline; 52. Closed discharge tank; DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical scheme in the embodiment of the utility model in combination with the drawings and embodiments. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] See also Figure 1-2 The utility model provides a real-time monitoring device for the annular pressure at the end face of a wellhead device, comprising a wellhead device 1 and a monitoring component 2 arranged thereon; the wellhead device 1 is the main equipment in the wellhead area, responsible for the exploitation and transportation of resources such as oil and natural gas. The monitoring component 2 is the key part for real-time monitoring of the annular pressure at the end face of the wellhead device 1;

[0026] The monitoring assembly 2 includes a gauge valve 3, a pressure monitoring unit 4 installed on an interface on one side of the gauge valve 3, and a pressure relief unit 5 installed on an interface on the other side of the gauge valve 3; the gauge valve 3 serves as a bridge connecting the wellhead device 1 and the monitoring unit, and not only has a connection function, but also can play a role in regulation and control; one end of the gauge valve 3 is connected to the pressure test hole at the upper end surface of the wellhead device 1, and the other end is respectively connected to the pressure monitoring unit 4 and the pressure relief unit 5.

[0027] The real-time monitoring device for the end face annulus pressure of the wellhead device of the utility model realizes real-time and accurate active monitoring of the end face annulus pressure of the wellhead device 1 through integrated design and intelligent monitoring means; it can not only realize active monitoring of the end face annulus of the oil production tree, but also timely reduce the increase in annulus pressure caused by temperature rise, and at the same time, preliminarily judge the leakage position through sampling, discharge the fluid in the annulus into the closed drainage system, and eliminate the safety hazard of oil and gas leakage.

[0028] See also Figure 1-2The pressure monitoring unit 4 includes a pressure gauge 41, a data processing module 42 arranged in the inner cavity of the pressure gauge 41, a pressure sensor 45 electrically connected to the data processing module 42, a wireless transmission component 46 and a power supply component 43; after the pressure sensor 45 obtains the pressure data, the pressure monitoring unit 4 processes and analyzes the data through the internal data processing module 42; the data processing module 42 can convert the pressure data into a visual signal, so that the operator can intuitively understand the pressure condition of the end face annulus of the wellhead device 1.

[0029] The power supply assembly 43 is preferably a lithium-ion battery or a solar power supply system, which can provide a stable and reliable power supply to ensure the continuous operation of the monitoring device.

[0030] The wireless transmission component 46 transmits the pressure signal detected by the pressure monitoring unit 4 to the remote control end in real time; in order to realize remote monitoring and data processing, the pressure monitoring unit 4 is also equipped with a wireless transmission component 46. This component can transmit the processed pressure data to the remote control end in real time, so that the operator can view and analyze the pressure data anytime and anywhere, ensuring full control of the wellhead area. At the same time, as a preferred embodiment, the wireless transmission component 46 is preferably a wireless transmission module based on 4G or 5G communication technology, which can realize high-speed and stable data transmission to meet the needs of real-time monitoring.

[0031] In the present application, the pressure monitoring unit 4 integrates a pressure gauge 41, a data processing module 42, a pressure sensor 45, a wireless transmission component 46 and a power supply component 43; wherein the pressure sensor 45 is responsible for sensing the pressure changes of the end face annulus in real time and converting the physical signal into an electrical signal. The data processing module 42 processes these electrical signals and extracts useful pressure data. The wireless transmission component 46 transmits the processed pressure data to the remote control end in real time, so that the operator can remotely obtain the pressure information of the end face annulus of the wellhead device 1 and realize remote monitoring.

[0032] It should be further explained that, considering the characteristics of the annular pressure at the end face of the wellhead device 1, it is recommended to select a pressure gauge 41 with high precision, high stability and corrosion resistance. For example, a diaphragm pressure gauge 41 or a bellows pressure gauge made of stainless steel, these types of pressure gauges 41 are suitable for corrosive media and high-pressure environments, and can provide accurate pressure readings.

[0033] In some specific embodiments, see Figure 1 , and also includes a speaker 44, which is arranged in the inner cavity of the pressure gauge 41 and is electrically connected to the data processing module 42; when the pressure exceeds a preset safety threshold, an alarm will sound to remind the operator; when selecting the speaker 44, its volume, sound quality and corrosion resistance should be considered.

[0034] Furthermore, the pressure relief unit 5 includes a pressure relief pipeline 51 and a closed-drain tank 52; one end of the pressure relief pipeline 51 is connected to the lower interface of the gauge valve 3, and the other end is connected to the liquid inlet of the closed-drain tank 52; the pressure relief unit 5 is configured to release pressure in time when the pressure is abnormal; and the fluid in the annulus is discharged to the closed-drain system, eliminating the safety hazard of oil and gas leakage.

[0035] Furthermore, the gauge valve 3 includes a valve body and a plurality of interfaces provided thereon, and has a plurality of interfaces for connecting various components; one end of the valve body is connected to the pressure test hole at the upper end surface of the wellhead device 1 .

[0036] The present invention is further described above in conjunction with the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A real-time monitoring device for the annular pressure at the end face of a wellhead device, characterized in that: It comprises a wellhead device (1) and a monitoring component (2) arranged thereon; wherein: The monitoring assembly (2) comprises a gauge valve (3), a pressure monitoring unit (4) installed on an interface on one side of the gauge valve (3), and a pressure relief unit (5) installed on an interface on the other side of the gauge valve (3).

2. A real-time monitoring device for annular pressure at the end face of a wellhead device according to claim 1, characterized in that: The pressure monitoring unit (4) comprises a pressure gauge (41), a data processing module (42) arranged in the inner cavity of the pressure gauge (41), a pressure sensor (45) electrically connected to the data processing module (42), a wireless transmission component (46) and a power supply component (43); The wireless transmission component (46) transmits the pressure signal monitored by the pressure monitoring unit (4) to the remote control terminal in real time.

3. A real-time monitoring device for annular pressure at the end face of a wellhead device according to claim 2, characterized in that: It also includes a speaker (44), which is arranged in the inner cavity of the pressure gauge (41) and is electrically connected to the data processing module (42).

4. A real-time monitoring device for annular pressure at the end face of a wellhead device according to claim 1, characterized in that: The pressure relief unit (5) comprises a pressure relief pipeline (51) and a closed exhaust tank (52); one end of the pressure relief pipeline (51) is connected to the lower interface of the gauge valve (3), and the other end is connected to the liquid inlet of the closed exhaust tank (52).

5. A real-time monitoring device for annular pressure at the end face of a wellhead device according to claim 1, characterized in that: The gauge valve (3) comprises a valve body and a plurality of interfaces arranged thereon; one end of the valve body is connected to a pressure test hole at the upper end surface of the wellhead device (1).

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