Production logging blowout preventer

Abstract

The application belongs to the technical field of production logging and provides a production logging blowout preventer. The production logging blowout preventer comprises a main pipeline, an exhaust assembly, a flow regulating assembly and a controller, the main pipeline has flowing liquid, the exhaust assembly is arranged at the front end of the flow regulating assembly along the flowing direction of the liquid; the exhaust assembly comprises an exhaust pipe, a plurality of exhaust holes are arranged on the exhaust pipe, and the plurality of exhaust holes are used for connecting the inside and outside of the main pipeline; the flow regulating assembly comprises a valve body and a flow sensor, the valve body is arranged on the main pipeline, the flow sensor is electrically connected with the controller, and the controller is used for adjusting the opening of the valve body according to the flow value measured by the flow sensor. The production logging blowout preventer provided by the application has good pressure relief effect and can avoid the waste of liquid in the pipeline.

Description

Technical Field

[0001] This application relates to the field of production logging technology, and in particular to a production logging blowout prevention device. Background Technology

[0002] Production logging refers to the logging performed using various testing instruments to obtain relevant underground information throughout the entire production process of an oil well (including production wells, water injection wells, observation wells, etc.) from commissioning to decommissioning. Its main purpose is to evaluate the flow of fluids inside and outside the tubing and the completion status of the well, providing a scientific basis for oil and gas field reservoir evaluation and development, downhole detection, and operational construction.

[0003] During production logging, a pipeline is connected to the wellhead, and various measuring instruments are arranged along the pipeline to measure various parameters of the liquid in the pipeline. Due to the high pressure of the liquid in the pipeline, a blowout preventer (BOP) needs to be installed near the wellhead. The BOP includes a pressure relief port. When the pressure is high, the pressure relief port is opened to release the liquid pressure, and when the pressure is low, the pressure relief port is closed.

[0004] In related technologies, blowout preventers have poor pressure relief effects and also cause waste of liquid in the pipeline. Summary of the Invention

[0005] This application provides a production logging blowout preventer, which has a good pressure relief effect and can avoid the waste of liquid in the pipeline.

[0006] This application provides a production logging blowout prevention device, including a main pipeline, an venting assembly, a flow regulating assembly, and a controller. The main pipeline contains flowing liquid. Both the venting assembly and the flow regulating assembly are located on the main pipeline. The venting assembly is positioned at the front end of the flow regulating assembly along the direction of liquid flow. The venting assembly includes an vent pipe, one end of which is connected to the main pipeline. The other end of the vent pipe has multiple vent holes for connecting the interior and exterior of the main pipeline to discharge gas from it. The flow regulating assembly includes a valve body and a flow sensor. The valve body is located on the main pipeline, and the flow sensor is electrically connected to the controller. The controller adjusts the opening of the valve body based on the flow rate measured by the flow sensor.

[0007] In one possible implementation, the production logging blowout prevention device provided in this application includes a vent pipe comprising a filter pipe and a filter funnel. The filter pipe is connected to the main pipeline and is provided with a liquid-proof and breathable membrane. The small end of the filter funnel is connected to the filter pipe, and multiple vent holes are provided at the large end of the filter funnel.

[0008] In one possible implementation, the production logging blowout prevention device provided in this application has multiple liquid-sealing and gas-permeable membranes, which are arranged at intervals along the extension direction of the filter pipe.

[0009] In one possible implementation, the production logging blowout preventer provided in this application includes a manifold assembly in the exhaust component. The manifold is located on and connected to the main pipeline, and the filter pipe is connected to the manifold. The diameter of the manifold is larger than the diameter of the main pipeline.

[0010] In one possible implementation, the production logging blowout preventer provided in this application further includes a level gauge and a first pump body in the venting assembly, both of which are electrically connected to the controller.

[0011] The level gauge is used to measure the liquid level in the manifold. The controller controls the opening of the first pump body according to the liquid level measured by the level gauge. The first pump body is used to pump the liquid in the manifold to the filter pipe.

[0012] In one possible implementation, the production logging blowout prevention device provided in this application further includes a motor in the flow regulation component. The motor is electrically connected to the controller, and the motor shaft is connected to the valve body.

[0013] When the flow rate measured by the flow sensor increases, the controller controls the motor to rotate the valve body to reduce the valve opening; when the flow rate measured by the flow sensor decreases, the controller controls the motor to rotate the valve body to increase the valve opening.

[0014] In one possible implementation, the production logging blowout prevention device provided in this application includes a valve body comprising a valve stem and a valve plate connected to the valve stem, and a motor shaft connected to the valve stem.

[0015] In one possible implementation, the production logging blowout prevention device provided in this application further includes a second pump body, which is disposed on the main pipeline and located at the rear end of the flow regulating component along the flow direction of the liquid. The second pump body is used to pump the liquid out of the main pipeline.

[0016] In one possible implementation, the production logging blowout prevention device provided in this application further includes a temperature sensor located at the front end of the venting assembly along the flow direction of the liquid. The temperature sensor is electrically connected to the controller and is used to measure the temperature of the liquid in the main pipeline.

[0017] In one possible implementation, the production logging blowout prevention device provided in this application further includes a filter, which is installed on the main pipeline and located between the temperature sensor and the venting assembly along the direction of liquid flow.

[0018] The production logging blowout preventer provided in this application comprises a main pipeline, an venting assembly, a flow regulation assembly, and a controller. The main pipeline contains flowing liquid. Both the venting assembly and the flow regulation assembly are located on the main pipeline. The venting assembly includes an vent pipe, one end of which is connected to the main pipeline, and the other end has multiple vent holes. These vent holes connect the inside and outside of the main pipeline to discharge gas, thereby reducing the pressure in the liquid and preventing it from spraying out at the outlet. Furthermore, since the vent holes only discharge gas, liquid waste is avoided. The flow regulation assembly includes a valve body and a flow sensor. The valve body is located on the main pipeline, and the flow sensor is electrically connected to the controller. The controller adjusts the valve opening based on the flow rate measured by the flow sensor. After the liquid flows through the flow regulation assembly, the flow rate remains within a preset range. Therefore, when the liquid exits the outlet of the main pipeline, the flow rate and pressure are relatively stable, preventing liquid from spraying out at the outlet due to excessive flow and pressure, further improving the blowout preventer effect of the production logging blowout preventer. The venting assembly is positioned at the front end of the flow regulating assembly along the direction of liquid flow, reducing the interference of mixed gas on the flow value measured by the flow sensor, making the flow value measured by the flow sensor more accurate. As a result, the controller can more precisely control the opening of the valve body, thereby making the liquid flow rate out of the outlet more stable. Through the cooperation of the venting assembly and the flow regulating assembly, the blowout prevention effect of the production logging blowout prevention device is further improved. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the production logging blowout prevention device provided in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the electrical connection relationship of the production logging blowout prevention device provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the exhaust assembly in the production logging blowout preventer provided in the embodiments of this application;

[0023] Figure 4 for Figure 3 Simplified diagram;

[0024] Figure 5This is a schematic diagram of the flow regulation component in the production logging blowout prevention device provided in the embodiments of this application;

[0025] Figure 6 for Figure 5 An explosion diagram.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100 - Production logging blowout prevention device;

[0028] 110 - Main pipe; 110a - Liquid inlet; 110b - Liquid outlet;

[0029] 111 - Pipeline section; 112 - Flange; 113 - Gasket; 114 - Rubber sealing ring;

[0030] 120 - Exhaust assembly;

[0031] 121-Exhaust pipe; 121a-First end; 121b-Second end; 1211-Filter pipe; 1212-Filter funnel;

[0032] 122 - Exhaust port;

[0033] 123 - Liquid-barrier and breathable membrane;

[0034] 124-Merge Warehouse;

[0035] 125-Level gauge;

[0036] 126 - First pump body;

[0037] 130 - Flow regulation component;

[0038] 131-Valve body; 1311-Valve stem; 1312-Valve plate;

[0039] 132 - Flow sensor;

[0040] 133 - Motor;

[0041] 140 - Controller;

[0042] 150 - Second pump body;

[0043] 160 - Temperature sensor;

[0044] 170-Filter;

[0045] X - Flow direction. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0050] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such as a process, method, system, product, or maintenance tool that includes a series of steps or units, not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or maintenance tool.

[0051] In oil extraction, it is necessary to measure various parameters of the oil in the pipeline; this process is called production logging.

[0052] During production logging, a pipeline is connected to the wellhead, and various measuring instruments are arranged along the pipeline to measure various parameters of the fluid within it. Due to the high pressure of the fluid in the pipeline, a blowout preventer needs to be installed near the wellhead.

[0053] In related technologies, blowout preventers include a pressure relief port with a valve body. When the pressure inside the pipeline is too high, the valve body opens, allowing gas and some liquid to flow out, thereby reducing the liquid pressure inside the pipeline. When the liquid pressure inside the pipeline is low, the valve body closes. The valve body can be opened by the pressure of the liquid inside the pipeline or manually. When it is necessary to close the valve body, it can be done manually.

[0054] When the valve body is opened, the substances flowing out of the pressure relief port include gas and liquid. The gas is the substance that needs to be discharged, while the liquid is usually a usable substance such as petroleum. Discharging both gas and liquid through the pressure relief port at the same time will result in waste of liquid.

[0055] Furthermore, when manually closing the valve, it is difficult to determine whether the pressure relief is complete. If the valve is closed before the pressure relief process is finished, the liquid in the pipeline will still be under pressure, thus the problem of liquid spraying out will persist. Excessive pressure relief will result in liquid waste and increase the pressure relief time, leading to a poorer pressure relief effect.

[0056] Based on this, this application provides a production logging blowout preventer, which has a good pressure relief effect and can avoid the waste of liquid in the pipeline.

[0057] Figure 1 This is a schematic diagram of the structure of the production logging blowout prevention device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the electrical connection relationship of the production logging blowout prevention device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the exhaust assembly in the production logging blowout preventer provided in the embodiments of this application; Figure 4 for Figure 3 Simplified diagram; Figure 5 This is a schematic diagram of the flow regulation component in the production logging blowout prevention device provided in the embodiments of this application; Figure 6 for Figure 5 An explosion diagram.

[0058] See Figures 1 to 6As shown in the embodiment of this application, the production logging blowout preventer 100 includes a main pipeline 110, an exhaust assembly 120, a flow regulating assembly 130, and a controller 140. The main pipeline 110 contains flowing liquid. Both the exhaust assembly 120 and the flow regulating assembly 130 are mounted on the main pipeline 110. The exhaust assembly 120 is positioned at the front end of the flow regulating assembly 130 along the direction of liquid flow. The exhaust assembly 120 includes an exhaust pipe 121, one end of which is connected to the main pipeline 110. The other end of the exhaust pipe 121 has multiple exhaust holes 122, which connect the interior and exterior of the main pipeline 110 to discharge gas from the main pipeline 110. The flow regulating assembly 130 includes a valve body 131 and a flow sensor 132. The valve body 131 is mounted on the main pipeline 110. The flow sensor 132 is electrically connected to the controller 140, which adjusts the opening of the valve body 131 based on the flow rate measured by the flow sensor 132.

[0059] Specifically, the main pipeline 110 is a pipeline for the flow of liquids such as petroleum. The main pipeline 110 includes an inlet 110a and an outlet 110b. The inlet 110a is used to connect to the pipeline in the oil well, and the outlet 110b is used to connect to the oil storage device. Liquids such as petroleum enter the main pipeline 110 from the inlet 110a, flow through the main pipeline 110, and then flow from the outlet 110b into the oil storage device. The direction of liquid flow is indicated by X.

[0060] The main pipeline 110 may include multiple pipeline segments 111, with adjacent pipeline segments 111 connected by flanges 112. Pipeline segments 111 can be straight or curved, depending on the specific location of the oil storage device at the wellhead. Figure 1 In the illustrated embodiment, the exhaust assembly 120 and the flow regulating assembly 130 can be installed on different pipe sections 111 for easy replacement and maintenance.

[0061] Please continue reading Figure 1 , Figure 3 and Figure 4 As shown in this embodiment, gas in the main pipeline 110 is discharged by providing an exhaust assembly 120. Specifically, the exhaust assembly 120 is disposed at the front end of the flow regulating assembly 130 along the flow direction X. The exhaust assembly 120 includes an exhaust pipe 121, which has a first end 121a and a second end 121b. The first end 121a is connected to the main pipeline 110, and the port of the second end 121b has a plurality of exhaust holes 122. Since the liquid contains gas, when the liquid flows through the exhaust assembly 120, the gas mixed in the liquid is discharged from the main pipeline 110 through the exhaust holes 122. This reduces the pressure in the liquid and prevents the liquid from spraying out at the outlet 110b. Furthermore, since the exhaust holes 122 only discharge gas, liquid waste is avoided.

[0062] The liquid continues to flow in the main pipe 110 along the flow direction X. When it flows through the flow regulating component 130, the flow rate of the liquid is regulated by the flow regulating component 130, so that the flow rate and pressure of the liquid in the main pipe 110 are stable.

[0063] For details, please continue reading. Figure 1 , Figure 5 and Figure 6 As shown, the flow regulation assembly 130 includes a valve body 131, which is also mounted on the main pipeline 110. A flow sensor 132 is also located near the valve body 131. The controller 140 is the control terminal of the production logging blowout preventer 100. The flow sensor 132 is electrically connected to the controller 140, either via cable or wirelessly. The flow sensor 132 measures the flow rate of the liquid in the main pipeline 110, and the measured flow rate value is transmitted to the controller 140.

[0064] The controller 140 can adjust the opening of the valve body 131 according to the flow rate value. Specifically, the controller 140 is equipped with a preset flow rate range. When the flow rate value measured by the flow sensor 132 is greater than the upper limit of the preset flow rate range, the controller 140 controls the opening of the valve body 131 to decrease, causing the flow rate of the liquid in the main pipeline 110 to fall back into the preset flow rate range. When the flow rate value measured by the flow sensor 132 is less than the lower limit of the preset flow rate range, the controller 140 controls the opening of the valve body 131 to increase, causing the flow rate of the liquid in the main pipeline 110 to increase into the preset flow rate range. After the liquid flows through the flow regulating component 130, the flow rate value of the liquid is always within the preset flow rate range. Therefore, when the liquid flows out of the outlet 110b of the main pipeline 110, the flow rate value and pressure of the liquid are relatively stable, which can prevent the liquid from spraying out at the outlet 110b due to excessive flow rate and pressure, so that the production logging blowout preventer 100 has a good blowout preventer effect.

[0065] In this embodiment, the venting assembly 120 is positioned at the front end of the flow regulating assembly 130 along the liquid flow direction X. The liquid first flows through the venting assembly 120, is vented by the venting assembly 120, and then flows through the flow regulating assembly 130 to regulate the flow rate. This reduces the interference of mixed gas on the flow rate value measured by the flow sensor 132, making the flow rate value measured by the flow sensor 132 more accurate. Consequently, the controller 140 can more precisely control the opening of the valve body 131, thereby making the liquid flow rate out of the outlet 110b more stable, further improving the blowout prevention effect of the production logging blowout prevention device 100.

[0066] The production logging blowout preventer 100 provided in this application embodiment comprises a main pipeline 110, an venting assembly 120, a flow regulating assembly 130, and a controller 140. The main pipeline 110 contains flowing liquid. Both the venting assembly 120 and the flow regulating assembly 130 are mounted on the main pipeline 110. The venting assembly 120 includes an vent pipe 121, one end of which is connected to the main pipeline 110. The other end of the vent pipe 121 has multiple vent holes 122, which connect the interior and exterior of the main pipeline 110 to discharge gas from the main pipeline 110. This reduces the pressure in the liquid and prevents liquid from spraying out at the outlet 110b. Furthermore, since the vent holes 122 only discharge gas, liquid waste is avoided. The flow regulation component 130 includes a valve body 131 and a flow sensor 132. The valve body 131 is mounted on the main pipeline 110. The flow sensor 132 is electrically connected to a controller 140. The controller 140 is used to adjust the opening of the valve body 131 according to the flow value measured by the flow sensor 132. After the liquid flows through the flow regulation component 130, the flow value of the liquid is within the preset flow range. Therefore, when the liquid flows out of the outlet 110b of the main pipeline 110, the flow value and pressure of the liquid are relatively stable, which can prevent the liquid from spraying out at the outlet 110b due to excessive flow and pressure, and further improve the blowout prevention effect of the production logging blowout prevention device 100. The venting assembly 120 is positioned at the front end of the flow regulating assembly 130 along the liquid flow direction X, reducing the interference of mixed gas on the flow value measured by the flow sensor 132, making the flow value measured by the flow sensor 132 more accurate. As a result, the controller 140 can more precisely control the opening of the valve body 131, thereby making the liquid flow rate out of the outlet 110b more stable. Through the cooperation of the venting assembly 120 and the flow regulating assembly 130, the blowout prevention effect of the production logging blowout prevention device 100 is further improved.

[0067] The specific structure of the exhaust assembly 120 is described below.

[0068] Please continue reading Figure 3 and Figure 4 As shown, the exhaust pipe 121 includes a filter pipe 1211 and a filter funnel 1212. The filter pipe 1211 is connected to the main pipeline 110, and a liquid-proof and breathable membrane 123 is provided in the filter pipe 1211. The small end of the filter funnel 1212 is connected to the filter pipe 1211, and multiple exhaust holes 122 are provided on the large end of the filter funnel 1212.

[0069] The filter tube 1211 is located on one side of the first end 121a, and a liquid-barrier and breathable membrane 123 is provided in the filter tube 1211. Figure 4The liquid-barrier and gas-permeable membrane 123 is schematically shown in the diagram with dashed lines. The liquid-barrier and gas-permeable membrane 123 may be made of polytetrafluoroethylene and has a microporous structure. The diameter of liquid molecules is about 0.02 mm, while the diameter of gas molecules is about 0.0000004 mm. The pore size of the microporous structure in the liquid-barrier and gas-permeable membrane 123 is set to be less than 0.01 mm, so that the gas in the filter tube 1211 can pass through the liquid-barrier and gas-permeable membrane 123 and enter the filter funnel 1212.

[0070] The small end of the filter funnel 1212 is connected to the filter tube 1211. The large end of the filter funnel 1212 has an exhaust hole 122. The space of the filter funnel 1212 gradually increases from the small end to the large end, so the pressure gradually decreases from the small end to the large end, which is more conducive to the flow of gas from the small end to the large end. Thus, the gas can be prevented from passing through the liquid-proof and breathable membrane 123 again and entering the main pipeline 110.

[0071] In one possible implementation, there are multiple liquid-barrier and breathable membranes 123, which are arranged at intervals along the extension direction of the filter tube 1211. This prevents liquid from flowing out of the filter tube 1211 when one of the liquid-barrier and breathable membranes 123 is damaged.

[0072] Please continue reading Figure 1 , Figure 3 and Figure 4 As shown, the exhaust assembly 120 also includes a manifold 124, which is disposed on and connected to the main pipeline 110. The filter pipe 1211 is connected to the manifold 124, and the diameter of the manifold 124 is larger than the diameter of the main pipeline 110.

[0073] Specifically, the manifold 124 can be an elliptical body. The pipe diameters at both ends of the manifold 124 are the same as the pipe diameters of the main pipe 110, so as to facilitate connection with the main pipe 110. The pipe diameter in the middle region of the manifold 124 is larger, so that the manifold 124 can hold more liquid.

[0074] When the liquid enters the manifold 124, it is temporarily stored in the manifold 124. This arrangement allows for more complete removal of any gases mixed in with the liquid. In addition, the flow rate of the liquid flowing out of the manifold 124 is more stable.

[0075] Please continue reading Figure 1 , Figure 3 and Figure 4As shown, the exhaust assembly 120 also includes a level gauge 125 and a first pump body 126, both of which are electrically connected to the controller 140. The level gauge 125 is used to measure the liquid level in the manifold 124, and the controller 140 controls the opening of the first pump body 126 according to the liquid level measured by the level gauge 125. The first pump body 126 is used to pump the liquid in the manifold 124 into the filter pipe 1211.

[0076] Specifically, the first pump body 126 can pump the liquid in the manifold 124 to the filter pipe 1211 to improve the efficiency of the filter pipe 1211 in filtering gas.

[0077] A level gauge 125 is also installed at the manifold 124. The level gauge 125 can measure the liquid level in the manifold 124. When the liquid level in the manifold 124 is high, the controller 140 can increase the opening of the first pump body 126 to increase the amount of liquid pumped into the filter pipe 1211, thereby further improving the gas filtration efficiency. When the liquid level in the manifold 124 is low, the controller 140 can decrease the opening of the first pump body 126 to decrease the amount of liquid pumped into the filter pipe 1211, thereby reducing the energy consumption of the first pump body 126.

[0078] The specific structure of the flow regulation component 130 will be described below.

[0079] See Figure 1 , Figure 5 and Figure 6 As shown, the flow regulating assembly 130 also includes a motor 133, which is electrically connected to the controller 140. The rotating shaft of the motor 133 is connected to the valve body 131. When the flow value measured by the flow sensor 132 increases, the controller 140 controls the motor to drive the valve body 131 to rotate, thereby reducing the opening of the valve body 131. When the flow value measured by the flow sensor 132 decreases, the controller 140 controls the motor 133 to drive the valve body 131 to rotate, thereby increasing the opening of the valve body 131.

[0080] For details, please continue reading. Figure 6 As shown, the valve body 131 includes a valve stem 1311 and a valve plate 1312 connected to the valve stem 1311, and the rotating shaft of the motor 133 is connected to the valve stem 1311.

[0081] The valve plate 1312 can be disposed within the main pipeline 110, and the outer periphery of the valve plate 1312 can be clearance-fitted with the inner wall of the main pipeline 110. One end of the valve stem 1311 is connected to the rotating shaft of the motor 133, and the other end of the valve stem 1311 is connected to the valve plate 1312. When the motor 133 rotates, the valve plate 1312 can be driven to rotate within the main pipeline 110 via the valve stem 1311, thereby controlling the opening degree of the valve plate 1312.

[0082] Motor 133 is electrically connected to controller 140. When the flow rate measured by flow sensor 132 increases, controller 140 can control motor 133 to rotate forward. Motor 133 drives valve plate 1312 to rotate via valve stem 1311, thereby reducing the opening of valve body 131 and decreasing the amount of liquid flowing through main pipeline 110. When the flow rate measured by flow sensor 132 decreases, controller 140 can control motor 133 to rotate in reverse. Motor 133 drives valve plate 1312 to rotate via valve stem 1311, thereby increasing the opening of valve body 131 and increasing the amount of liquid flowing through main pipeline 110. By controlling motor 133 to rotate valve body 131 via controller 140, the flow regulation component 130 can regulate flow in a simple and cost-effective manner.

[0083] In addition, Figure 6 The diagram also shows the specific structure of the connection point of pipe segment 111 in main pipeline 110. Please continue reading... Figure 6 As shown, a gasket 113 and a rubber sealing ring 114 are also provided at the connection between flange 112 and pipe section 111 to ensure the reliability and sealing of the connection of pipe section 111.

[0084] Please continue reading Figure 1 and Figure 2 As shown, the production logging blowout preventer 100 also includes a second pump body 150, which is installed on the main pipeline 110. The second pump body 150 is located at the rear end of the flow regulating component 130 along the flow direction X of the liquid, and is used to pump the liquid out of the main pipeline 110.

[0085] The second pump body 150 can also be electrically connected to the controller 140. After the liquid is vented by the venting assembly 120 and the flow rate is regulated by the flow regulating assembly 130, it can be pumped out of the main pipeline 110 through the second pump body 150. Setting the second pump body 150 can increase the flow rate of the liquid.

[0086] Please continue reading Figure 1 and Figure 2 As shown, the production logging blowout preventer 100 also includes a temperature sensor 160. The temperature sensor 160 is located at the front end of the exhaust assembly 120 along the flow direction X of the liquid. The temperature sensor 160 is electrically connected to the controller 140 and is used to measure the temperature of the liquid in the main pipeline 110.

[0087] Temperature sensor 160 measures the temperature information and transmits it to controller 140. The operator can read the temperature of the liquid from controller 140, thereby enabling the monitoring of the liquid temperature.

[0088] Please continue reading Figure 1As shown, the production logging blowout preventer 100 also includes a filter 170, which is installed on the main pipeline 110 and located between the temperature sensor 160 and the venting assembly 120 along the direction of liquid flow.

[0089] The filter 170 can filter solid particles mixed in the liquid, thereby preventing solid particles from damaging or clogging the liquid-blocking and breathable membrane 123 in the exhaust assembly 120.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A production logging blowout prevention device, characterized in that, It includes a main pipeline, an exhaust assembly, a flow regulating assembly, and a controller. The main pipeline contains a flowing liquid. The exhaust assembly and the flow regulating assembly are both disposed on the main pipeline. The exhaust assembly is disposed at the front end of the flow regulating assembly along the flow direction of the liquid. The exhaust assembly includes an exhaust pipe, one end of which is connected to the main pipeline, and the other end of which is provided with a plurality of exhaust holes for connecting the interior and exterior of the main pipeline to discharge gas from the main pipeline. The flow regulation assembly includes a valve body and a flow sensor. The valve body is disposed on the main pipeline, and the flow sensor is electrically connected to the controller. The controller is used to adjust the opening degree of the valve body according to the flow value measured by the flow sensor. The exhaust pipe includes a filter pipe and a filter funnel. The filter pipe is connected to the main pipeline and a liquid-proof and breathable membrane is provided in the filter pipe. The small end of the filter funnel is connected to the filter pipe, and a plurality of exhaust holes are provided on the large end of the filter funnel. The exhaust assembly also includes a manifold, which is disposed on and connected to the main pipeline, and the filter pipe is connected to the manifold. The diameter of the manifold is larger than the diameter of the main pipeline. The exhaust assembly also includes a level gauge and a first pump body, both of which are electrically connected to the controller. The level gauge is used to measure the liquid level in the manifold. The controller controls the opening of the first pump body according to the liquid level measured by the level gauge. The first pump body is used to pump the liquid in the manifold to the air filter pipe.

2. The production logging blowout prevention device according to claim 1, characterized in that, The liquid-sealing and breathable membranes are multiple, and the multiple liquid-sealing and breathable membranes are arranged at intervals along the extension direction of the filter tube.

3. The production logging blowout prevention device according to claim 1, characterized in that, The flow regulating component also includes a motor, which is electrically connected to the controller, and the motor shaft is connected to the valve body; When the flow rate measured by the flow sensor increases, the controller controls the motor to drive the valve body to rotate, thereby reducing the valve body opening; when the flow rate measured by the flow sensor decreases, the controller controls the motor to drive the valve body to rotate, thereby increasing the valve body opening.

4. The production logging blowout prevention device according to claim 3, characterized in that, The valve body includes a valve stem and a valve plate connected to the valve stem, and the motor shaft is connected to the valve stem.

5. The production logging blowout prevention device according to any one of claims 1 to 4, characterized in that, It also includes a second pump body, which is disposed on the main pipeline and located at the rear end of the flow regulating assembly along the flow direction of the liquid. The second pump body is used to pump the liquid out of the main pipeline.

6. The production logging blowout prevention device according to any one of claims 1 to 4, characterized in that, It also includes a temperature sensor located at the front end of the exhaust assembly along the flow direction of the liquid. The temperature sensor is electrically connected to the controller and is used to measure the temperature of the liquid in the main pipeline.

7. The production logging blowout prevention device according to claim 6, characterized in that, It also includes a filter disposed on the main pipeline, the filter being located between the temperature sensor and the exhaust assembly along the flow direction of the liquid.

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