Wellhead pressure-bearing protection device with pressure monitoring alarm function

Abstract

The utility model discloses a wellhead pressure bearing protection device with pressure monitoring alarm function, include: wellhead pressure bearing protection device body, lateral pressure tapping, the both sides of wellhead pressure bearing protection device body are opened in symmetry, one lateral pressure tapping is in proper order series connection manual dark rod flat plate valve and pressure sensor, and pressure sensor is built -in control circuit board and wireless communication module, receive alarm device, be located remote duty room, be used for receiving pressure signal and trigger the buzzer alarm with unique number when pressure exceeds preset threshold value. The utility model discloses a pressure sensor is arranged on wellhead pressure bearing protection device body, can gather pressure signal in real time and send outward in LoRa or 433MHz mode, and the receiving alarm device of duty room can receive pressure data in time, has realized the remote real -time monitoring to wellhead pressure, has solved the monitoring blind area problem that manual timing inspection exists, has effectively improved the timeliness and accuracy of monitoring, has guaranteed can discover wellhead pressure unusual condition in time.

Description

Technical Field

[0001] This utility model relates to a wellhead pressure protection device with pressure monitoring and alarm function. Background Technology

[0002] The wellhead pressure protection device is a key pressure-bearing component installed between the casing head and the blowout preventer assembly. It is used to withstand high-pressure fluids downhole and establish the first sealing barrier at the wellhead.

[0003] In existing technologies, only local pressure gauges are installed at the pressure tapping ports on the side of the device, and the wellhead pressure and leakage are monitored by manual periodic inspections, without remote monitoring capabilities.

[0004] However, manual inspections have time blind spots, and blowout anomalies often occur at night or during shift changes, missing the best time to shut down the well.

[0005] Therefore, a wellhead pressure protection device with pressure monitoring and alarm function is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a wellhead pressure protection device with pressure monitoring and alarm function, so as to solve the problem mentioned in the background art that relies on manual periodic inspection to monitor wellhead pressure and leakage, and lacks remote monitoring function.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a wellhead pressure protection device with pressure monitoring and alarm function, comprising: The wellhead pressure protection device body has its bottom end fixedly connected to the casing head via a connecting flange, and a high-pressure channel communicating with the wellbore is formed inside. Lateral pressure taps are symmetrically located on both sides of the wellhead pressure protection device body; The shut-off valve has its inlet end securely connected to one of the lateral pressure taps. On the other side, a manual flat valve and a pressure sensor are connected in series at the pressure sampling port, so that the pressure sensor and the shut-off valve are arranged in a straight line in series along the pressure sampling direction. The pressure sensor has a built-in control circuit board and a wireless communication module, which are used to transmit the collected pressure signal to the outside in LoRa or 433 MHz mode; An alarm receiving device, located in a remote duty room, is used to receive the pressure signal and trigger a buzzer alarm with a unique number when the pressure exceeds a preset threshold.

[0008] Preferably, the receiving alarm device includes a signal receiving device and a buzzer installed inside the duty room. The signal receiving device is connected to the wireless communication module of the pressure sensor via a LoRa or 433 MHz wireless link. When the pressure exceeds a threshold, the buzzer is triggered to sound an alarm. The buzzer has a unique number.

[0009] Preferably, a sealing gasket is provided at the bottom end of the wellhead pressure protection device body, and is fixedly connected to the casing head by bolts.

[0010] Preferably, a pressure gauge is provided on the shut-off valve so that the pressure gauge and the pressure sensor take pressure in parallel.

[0011] Preferably, a drill rod stopcock is provided at the upper port of the high-pressure channel, and a wire-lifting plug is provided at the top of the drill rod stopcock.

[0012] Preferably, a power module, which is a lithium battery, is also provided at the pressure sensor.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention incorporates a wireless pressure sensor on the wellhead pressure protection device, enabling real-time acquisition of pressure signals and transmission via LoRa or 433MHz. The receiving alarm device in the control room can promptly receive the pressure data, achieving remote real-time monitoring of wellhead pressure. This solves the monitoring blind spot problem inherent in manual periodic inspections, effectively improving the timeliness and accuracy of monitoring and ensuring timely detection of abnormal wellhead pressure conditions.

[0014] When the pressure exceeds the preset threshold, the receiving alarm device will trigger a buzzer with a unique number. On-duty personnel can quickly determine the location of the problem based on the buzzer number, without having to check each valve one by one. This greatly shortens the time for troubleshooting abnormalities, enabling staff to respond quickly and take timely measures, effectively improving emergency response efficiency and helping to prevent the further escalation of accidents.

[0015] The shut-off valve, manual non-stick flat valve, pressure sensor, and receiving alarm device work together to form a complete pressure monitoring and alarm system. The shut-off valve and manual non-stick flat valve can be used to cut off or connect the pressure source, facilitating sensor maintenance and calibration; the pressure gauge and pressure sensor take pressure in parallel, providing redundant monitoring methods and further improving the accuracy and reliability of monitoring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the oblique structure of an embodiment of the present utility model; Figure 3 This is a side view of an embodiment of the present utility model; Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 5 This is a schematic diagram of the system flow of an embodiment of the present utility model.

[0017] In the diagram: 1. Wellhead pressure protection device body; 2. High-pressure channel; 3. Lateral pressure tap; 4. Shut-off valve; 5. Manual flat valve for concealed rods; 6. Pressure sensor; 7. Sealing gasket ring; 8. Bolt; 9. Pressure gauge; 10. Drill pipe plug; 11. Wire lifting plug. Detailed Implementation

[0018] To address the problem of existing systems relying on manual, periodic inspections to monitor wellhead pressure and leakage, lacking remote monitoring capabilities, this invention provides a wellhead pressure protection device with pressure monitoring and alarm functions. The technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0019] Please see Figure 1-5 This utility model provides a wellhead pressure protection device with pressure monitoring and alarm function, comprising: The wellhead pressure protection device body 1 has a bottom end fixedly connected to the casing head via a connecting flange, forming a high-pressure channel 2 that communicates with the wellbore; a drill pipe plug 10 is provided at the upper port of the high-pressure channel 2, and a wire-lifting plug 11 is provided at the top of the drill pipe plug 10.

[0020] Lateral pressure taps 3 are symmetrically arranged on both sides of the body 1 of the wellhead pressure protection device; The inlet end of the shut-off valve 4 is fastened to one of the lateral pressure taps 3; On the other side, the pressure tap 3 is connected in series with the manual flat valve 5 and the pressure sensor 6, so that the pressure sensor 6 and the shut-off valve 4 are arranged in a straight line in series along the pressure sampling direction. The pressure sensor 6 has a built-in control circuit board and a wireless communication module, which is used to transmit the collected pressure signal to the outside in LoRa or 433 MHz mode; the pressure sensor 6 is also equipped with a power module, which is a lithium battery.

[0021] An alarm receiving device, located in a remote duty room, is used to receive the pressure signal and trigger a buzzer alarm with a unique number when the pressure exceeds a preset threshold.

[0022] The alarm receiving device includes a signal receiving device and a buzzer installed inside the duty room. The signal receiving device is connected to the wireless communication module of the pressure sensor 6 via a LoRa or MHz wireless link. When the pressure exceeds the threshold, the buzzer is triggered to sound an alarm. The buzzer has a unique number.

[0023] The bottom end of the wellhead pressure protection device body 1 is provided with a sealing gasket 7, which is fixedly connected to the casing head by bolts 8.

[0024] The working principle of the wellhead pressure protection device with pressure monitoring and alarm function provided by this utility model is as follows: During drilling operations, the pressure in the high-pressure channel 2 within the wellhead pressure protection device body 1 acts on the pressure sensor 6. The control circuit board built into the pressure sensor 6 collects the pressure signal in real time and transmits the pressure data to the receiving alarm device in the remote control room via a wireless communication module using LoRa or 433 MHz. The receiving alarm device receives and displays the pressure data, allowing operators to monitor changes in wellhead pressure in real time.

[0025] When the wellhead pressure exceeds a preset threshold, the receiving alarm device immediately triggers a buzzer with a unique number. The buzzer emits an audible and visual alarm signal to alert the on-duty personnel that the wellhead pressure is abnormal. The on-duty personnel can quickly determine the location of the abnormality based on the buzzer's number, allowing for timely implementation of appropriate measures, such as closing the shut-off valve 4 or the manual flat valve 5, stopping drilling operations, and controlling and managing the wellhead pressure to prevent accidents.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wellhead pressure protection device with pressure monitoring and alarm function, characterized in that, include: Wellhead pressure protection device body (1), the bottom end of the wellhead pressure protection device body (1) is fixedly connected to the casing head through a connecting flange, and a high pressure channel (2) communicating with the wellbore is formed inside. Lateral pressure taps (3) are symmetrically opened on both sides of the body (1) of the wellhead pressure protection device; The inlet end of the shut-off valve (4) is fastened to one of the side pressure taps (3); On the other side, the pressure tap (3) is connected in series with the manual flat valve (5) and the pressure sensor (6), so that the pressure sensor (6) and the shut-off valve (4) are arranged in a straight line in series along the pressure sampling direction; The pressure sensor (6) has a built-in control circuit board and wireless communication module, which is used to transmit the collected pressure signal to the outside in LoRa or 433 MHz mode; An alarm receiving device, located in a remote duty room, is used to receive the pressure signal and trigger a buzzer alarm with a unique number when the pressure exceeds a preset threshold.

2. A wellhead pressure protection device with pressure monitoring and alarm function according to claim 1, characterized in that: The receiving alarm device includes a signal receiving device and a buzzer installed inside the duty room. The signal receiving device is connected to the wireless communication module of the pressure sensor (6) via a LoRa or 433 MHz wireless link. When the pressure exceeds the threshold, the buzzer is triggered to sound an alarm. The buzzer has a unique number.

3. A wellhead pressure protection device with pressure monitoring and alarm function according to claim 2, characterized in that: The bottom end of the wellhead pressure protection device body (1) is provided with a sealing gasket (7), which is fixedly connected to the casing head by bolts (8).

4. A wellhead pressure protection device with pressure monitoring and alarm function according to claim 3, characterized in that: A pressure gauge (9) is provided on the shut-off valve (4) so ​​that the pressure gauge (9) and the pressure sensor (6) can take pressure in parallel.

5. A wellhead pressure protection device with pressure monitoring and alarm function according to claim 4, characterized in that: A drill rod plug (10) is provided at the upper port of the high-pressure channel (2), and a wire-lifting plug (11) is provided at the top of the drill rod plug (10).

6. A wellhead pressure protection device with pressure monitoring and alarm function according to claim 5, characterized in that: A power module, which is a lithium battery, is also provided at the pressure sensor (6).

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