Blowout prevention oil extraction wellhead

Abstract

The utility model relates to the technical field of oil extraction, and discloses a blowout prevention oil extraction wellhead which comprises a tubing head body and an oil extraction wellhead body. According to the blowout prevention oil extraction wellhead, the monitoring assembly is arranged, the ultrasonic sensor utilizes the acoustic emission technology and the ultrasonic propagation characteristic, high-sensitivity detection is achieved by capturing specific acoustic signals generated by leakage, high-frequency manual inspection is replaced, the operation risk in the high-risk environment is reduced, catastrophic leakage (blowout precursor) is prevented, and after micro leakage is found, the blowout prevention oil extraction wellhead can be automatically detected. The ultrasonic sensor finds a detection signal and sends the detection signal to the PLC, and the PLC sends an operation instruction to the audible and visual alarm to make a sound, so that the purpose of early warning is achieved, and the danger of oil gas leakage possibly occurring at the connection position between the tubing head and the Christmas tree and in a long-time high-pressure working environment is avoided; the traditional soap bubble detection is difficult to accurately position a tiny leakage point, so that the use safety of an oil production wellhead is ensured.

Description

Technical Field

[0001] This utility model relates to the field of oil production technology, and in particular to blowout-proof oil wellheads. Background Technology

[0002] In the process of oil and gas extraction, the wellhead is mainly established through the production tree to create a transition channel between the wellbore and the surface. The production tree is used to extract oil and gas from the formation. At the same time, water and polymer are injected into the formation through the production tree to improve the oil recovery rate. In order to prevent blowouts during the oil and gas extraction process, wellheads with blowout preventers are usually used.

[0003] The oil wellhead device disclosed in announcement number CN208122825U, although the utility model adds a filtration and purification mechanism to the main channel of the oil wellhead, the crude oil is purified before entering the oil pipeline; it can initially purify harmful impurities such as sulfur compounds in crude oil and reduce corrosion of crude oil transportation pipelines.

[0004] However, this wellhead device has the following disadvantages: the connection between the tubing head and the Christmas tree may pose a risk of oil and gas leakage under long-term high-pressure working conditions; traditional soap bubble detection is difficult to accurately locate tiny leak points; and it is not conducive to the safety of use at the wellhead. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a blowout-proof wellhead to solve the safety problem of the inconvenience of using wellheads mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a blowout-proof oil wellhead, comprising a tubing head body and an oil wellhead body, wherein a monitoring component is sleeved at the connection between the tubing head body and the oil wellhead body, and a support component overlaps below the tubing head body and the oil wellhead body.

[0009] The monitoring components include an open retaining ring, a mounting bracket, an ultrasonic sensor, a PLC controller, and an audible and visual alarm.

[0010] The support components include anti-slip cotton, rubber pads, limiting plates, and support frames.

[0011] As a further embodiment of this utility model, the monitoring component includes an open retaining ring fitted at the connection between the tubing head body and the wellhead body. Three mounting brackets are welded to the outer surface of the open retaining ring, and mounting holes are opened on the surface of the mounting brackets. An ultrasonic sensor is inserted into the interior of the mounting holes.

[0012] As a further embodiment of this utility model, one side of the ultrasonic sensor is electrically connected to a PLC controller via a power cord, and one side of the PLC controller is electrically connected to an audible and visual alarm via a power cord.

[0013] As a further embodiment of this utility model, both ends of the open retaining ring are provided with limit holes, and the internal threads of the limit holes are connected to limit bolts.

[0014] As a further embodiment of this invention, the surface of the ultrasonic sensor is provided with a threaded groove, and two mounting caps are engaged inside the threaded groove.

[0015] As a further embodiment of this utility model, the bottom of the audible and visual alarm is fixedly connected to an equipment cabinet, and the interior of the equipment cabinet is used to install a PLC controller.

[0016] As a further embodiment of this utility model, the support assembly includes four anti-slip cotton pads that overlap the bottom of the tubing head body and the wellhead body. A rubber pad is fixedly connected to the bottom surface of the anti-slip cotton pads, and a limiting plate is fixedly connected to the bottom surface of the rubber pads. A support frame is welded to one side of the limiting plate, and the support frame is fixedly connected to the bottom surface by a mounting column.

[0017] (III) Beneficial Effects

[0018] This utility model provides a blowout-proof oil wellhead, which has the following beneficial effects:

[0019] 1. This blowout preventer wellhead, through the setting of monitoring components, after the blowout preventer wellhead is assembled, an open retaining ring is installed at the connection between the tubing head body and the wellhead body. The ultrasonic sensor is fixed to the mounting frame with a mounting cap. The head of the ultrasonic sensor is in direct contact with the metal surface at the connection between the tubing head body and the wellhead body through coupling agent (high-temperature silicone grease), ensuring effective sound wave transmission and improving leak detection capability. The ultrasonic sensor utilizes acoustic emission technology and ultrasonic propagation characteristics to achieve high-sensitivity detection by capturing specific acoustic signals generated by leaks, replacing high-frequency manual inspections, reducing the risk of high-risk environment operations, and preventing catastrophic leaks (blowout precursors). After detecting a micro-leak, the ultrasonic sensor sends the detection signal to the PLC controller, which issues an operation command to the audible and visual alarm to sound, thereby achieving the purpose of early warning. This avoids the risk of oil and gas leaks that may occur at the connection between the tubing head and the wellhead in a long-term high-pressure working environment. Traditional soap bubble detection is difficult to accurately locate micro-leak points, which helps to ensure the safety of the wellhead.

[0020] 2. This blowout preventer wellhead, through the setting of the support components, allows the support frame to be moved to the position of the blowout preventer wellhead after the blowout preventer wellhead is assembled. The main body of the tubing head and the valve body of the wellhead body are placed on the anti-slip cotton, rubber pad and limit plate respectively. Then the support frame is fixed with external mounting parts, thereby supporting the blowout preventer wellhead and preventing it from tilting under long-term high pressure impact, which helps to improve the stability of the blowout preventer wellhead. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the monitoring component structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the support component structure of this utility model.

[0025] In the diagram: 1. Tubing head body; 2. Wellhead body; 3. Monitoring components; 301. Opening retainer ring; 302. Mounting bracket; 303. Ultrasonic sensor; 304. PLC controller; 305. Audible and visual alarm; 4. Support components; 401. Anti-slip cotton; 402. Rubber pad; 403. Limiting plate; 404. Support frame; 5. Limiting bolt; 6. Mounting cap; 7. Equipment cabinet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution: a blowout-proof oil wellhead, including a tubing head body 1 and an oil wellhead body 2, a monitoring component 3 sleeved at the connection between the tubing head body 1 and the oil wellhead body 2, and a support component 4 overlapping below the tubing head body 1 and the oil wellhead body 2.

[0028] Monitoring component 3 includes an open retaining ring 301, a mounting bracket 302, an ultrasonic sensor 303, a PLC controller 304, and an audible and visual alarm 305. Through the configuration of monitoring component 3, after the blowout preventer wellhead assembly is completed, the open retaining ring 301 is installed at the connection between the tubing head body 1 and the wellhead body 2. The ultrasonic sensor 303 is then fixed to the mounting bracket 302 using a mounting cap 6. The head of the ultrasonic sensor 303 directly contacts the metal surface at the connection between the tubing head body 1 and the wellhead body 2 via a coupling agent (high-temperature silicone grease), ensuring effective sound wave transmission and improving leak detection capabilities. The ultrasonic sensor 303 utilizes acoustic emission technology and... The ultrasonic wave propagation characteristics enable high-sensitivity detection by capturing specific acoustic signals generated by leaks, replacing frequent manual inspections, reducing the risk of working in high-risk environments, and preventing catastrophic leaks (precursors to blowouts). After detecting a micro-leak, the ultrasonic sensor 303 detects the signal and sends it to the PLC controller 304. The PLC controller 304 then sends an operation command to the audible and visual alarm 305 to emit a sound, thereby achieving the purpose of early warning. This avoids the risk of oil and gas leaks that may occur in the connection between the tubing head and the wellhead during long-term high-pressure working environments. Traditional soap bubble detection is difficult to accurately locate micro-leak points, which helps to ensure the safety of oil wellhead use.

[0029] The support assembly 4 includes anti-slip cotton 401, rubber pad 402, limiting plate 403, and support frame 404. With the support assembly 4, after the blowout preventer wellhead is assembled, the support frame 404 is moved to the position of the blowout preventer wellhead, so that the valve bodies of the tubing head body 1 and the wellhead body 2 are respectively placed on the anti-slip cotton 401, rubber pad 402, and limiting plate 403. Then, the support frame 404 is fixed with external mounting parts, thereby supporting the blowout preventer wellhead and preventing it from tilting under long-term high-pressure impact, which helps to improve the stability of the blowout preventer wellhead.

[0030] The monitoring component 3 includes an open retaining ring 301 that is fitted onto the connection between the tubing head body 1 and the wellhead body 2. Three mounting brackets 302 are welded to the outer surface of the open retaining ring 301. Mounting holes are provided on the surface of the mounting brackets 302, and ultrasonic sensors 303 are inserted into the mounting holes. By setting up the monitoring component 3, it plays a role in monitoring whether there is any leakage of oil and gas and increasing the safety of the wellhead.

[0031] One side of the ultrasonic sensor 303 is electrically connected to a PLC controller 304 via a power cord, and the other side of the PLC controller 304 is electrically connected to an audible and visual alarm 305 via a power cord. Through the settings of the PLC controller 304, it plays the role of monitoring signals and issuing operation commands.

[0032] Both ends of the open retaining ring 301 have limit holes, and the internal threads of the limit holes are connected to limit bolts 5. The limit bolts 5 facilitate the installation of the open retaining ring 301.

[0033] The ultrasonic sensor 303 has a threaded groove on its surface, and two mounting caps 6 are engaged inside the threaded groove. The ultrasonic sensor 303 is used to monitor the sealing condition.

[0034] The bottom of the audible and visual alarm 305 is fixedly connected to an equipment cabinet 7. The inside of the equipment cabinet 7 is used to install the PLC controller 304. The equipment cabinet 7 serves to protect the PLC controller 304.

[0035] The support assembly 4 includes four anti-slip cotton 401s that overlap the bottom of the tubing head body 1 and the wellhead body 2. A rubber pad 402 is fixedly connected to the bottom surface of the anti-slip cotton 401. A limit plate 403 is fixedly connected to the bottom surface of the rubber pad 402. A support frame 404 is welded to one side of the limit plate 403. The support frame 404 is fixedly connected to the bottom surface by the mounting column. The support assembly 4 serves as a blowout prevention wellhead.

[0036] The model of the ultrasonic sensor 303 is Pepperl+Fuchs UB500. The above parameters and model can be selected according to the actual situation.

[0037] In this invention, the working steps of the device are as follows:

[0038] First step: During use, after the blowout preventer wellhead assembly is completed, install the open retaining ring 301 at the connection between the tubing head body 1 and the wellhead body 2. Fix the ultrasonic sensor 303 to the mounting bracket 302 with the mounting cap 6. The head of the ultrasonic sensor 303 is in direct contact with the metal surface at the connection between the tubing head body 1 and the wellhead body 2 through the coupling agent (high temperature silicone grease) to ensure effective sound wave transmission and improve leak detection capability. The ultrasonic sensor 303 uses acoustic emission technology and ultrasonic propagation characteristics to achieve high-sensitivity detection by capturing specific acoustic signals generated by leaks, replacing high-frequency manual inspections, reducing the risk of high-risk environment operations, and preventing catastrophic leaks (blowout precursors). After detecting a micro-leak, the ultrasonic sensor 303 sends the detection signal to the PLC controller 304, and the PLC controller 304 sends an operation command to the audible and visual alarm 305 to emit a sound.

[0039] Second step: When in use, after the blowout preventer wellhead assembly is completed, move the support frame 404 to the position of the blowout preventer wellhead, so that the valve body of the tubing head body 1 and the wellhead body 2 rest on the anti-slip cotton 401, the rubber pad 402 and the limiting plate 403 respectively, and then fix the support frame 404 with external mounting parts.

[0040] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0041] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0042] 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. Blowout-preventing oil wellhead, comprising a tubing head body (1) and an oil wellhead body (2), characterized in that: A monitoring component (3) is sleeved at the connection between the tubing head body (1) and the wellhead body (2), and a support component (4) overlaps below the tubing head body (1) and the wellhead body (2). The monitoring component (3) includes an open retaining ring (301), a mounting bracket (302), an ultrasonic sensor (303), a PLC controller (304), and an audible and visual alarm (305). The support assembly (4) includes anti-slip cotton (401), rubber pad (402), limiting plate (403), and support frame (404).

2. The blowout-preventing oil wellhead of claim 1, wherein: The monitoring component (3) includes an open retaining ring (301) fitted at the connection between the tubing head body (1) and the wellhead body (2). Three mounting brackets (302) are welded to the outer surface of the open retaining ring (301). Mounting holes are opened on the surface of the mounting brackets (302), and ultrasonic sensors (303) are inserted into the interior of the mounting holes.

3. The blowout-preventing oil wellhead of claim 2, wherein: One side of the ultrasonic sensor (303) is electrically connected to a PLC controller (304) via a power line, and one side of the PLC controller (304) is electrically connected to an audible and visual alarm (305) via a power line.

4. The blowout-preventing oil wellhead of claim 2, wherein: Both ends of the open retaining ring (301) are provided with limit holes, and the internal threads of the limit holes are connected to limit bolts (5).

5. The blowout-preventing oil wellhead of claim 1, wherein: The surface of the ultrasonic sensor (303) is provided with a threaded groove, and two mounting caps (6) are engaged inside the threaded groove.

6. The blowout-preventing oil wellhead of claim 3, wherein: The bottom of the audible and visual alarm (305) is fixedly connected to an equipment cabinet (7), and the inside of the equipment cabinet (7) is used to install a PLC controller (304).

7. The blowout-preventing oil wellhead of claim 1, wherein: The support assembly (4) includes four anti-slip cotton (401) that overlap the tubing head body (1) and the wellhead body (2). The bottom surface of the anti-slip cotton (401) is fixedly connected to a rubber pad (402). The bottom surface of the rubber pad (402) is fixedly connected to a limiting plate (403). A support frame (404) is welded to one side of the limiting plate (403). The support frame (404) is fixedly connected to the bottom surface by a mounting column.

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