Wellhead fluid conversion valve of oil and gas well

Abstract

The embodiment of the utility model relates to the technical field of oil and gas exploitation, and discloses an oil and gas well mouth fluid conversion valve, one side outlet of the conversion valve is connected with an oil and gas well mouth, the other side outlet is connected with an oil measuring truck, and the oil and gas well mouth fluid conversion valve comprises a body and a rotating body. The body is provided with a first channel, a second channel, a third channel and a fourth channel of which one ends are communicated with each other and the other ends penetrate through the body, and butt joint cavities are formed in the communicated positions of the first channel, the second channel, the third channel and the fourth channel; the rotating body is arranged in the butt joint cavity and used for being communicated with different fluid channels when rotating, so that the oil and gas well is in a normal production state or a measurement state. According to the oil and gas well mouth fluid conversion valve, the oil and gas well is connected with an oil measuring truck without pumping, the yield loss is reduced, the labor cost is reduced, and well lying is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of oil and gas extraction technology, and in particular to a wellhead fluid diverter valve for an oil and gas well. Background Art

[0002] With the development of oil and gas production, oilfield production has entered a new stage of "four modernizations": standardized design, modular construction, standardized procurement, and enhanced information technology. To simplify the gathering and transportation process, oil and gas wells are increasingly connected to nearby gathering lines or operated in tandem. This makes it impossible to measure the production of individual wells at the pipeline. To verify the actual liquid production of an oil and gas well, it is necessary to use a metering oil truck at the wellhead to measure the liquid production. When measuring the liquid production of an oil and gas well using a metering oil truck, the liquid flow direction during production must be converted to the liquid flow direction during measurement. This requires a liquid flow diversion valve.

[0003] The traditional measurement method requires stopping the well, closing the production and back-pressure gates, and draining the well. The plug on the nozzle sleeve is then loosened, and the oil measuring channel is formed using the connection device of the oil measuring vehicle and the nozzle sleeve. After the oil measurement is completed, the oil and gas well is shut down, the production and back-pressure gates are closed, and the well is drained. The connection of the oil measuring vehicle is then disassembled, the production process is resumed, and the back-pressure and production gates are opened. The entire oil measurement process takes three employees approximately 60 minutes to complete. For some oil and gas wells, the draining process alone can take up to 60 minutes. Frequent well opening and closing, draining, and removing the nozzle sleeve plug can easily cause sand to get stuck in the well. The frequent draining poses safety and environmental risks and increases the workload of employees.

[0004] How to transform the process of measuring oil and gas well production in the oil and gas production process to achieve the goal of continuous pumping of oil and gas wells and connecting oil measuring vehicles, reduce production losses, lower labor costs and reduce the occurrence of lying wells, is a technical challenge currently faced in oil and gas development. Utility Model Content

[0005] The purpose of the embodiment of the present application is to provide a wellhead fluid diverter valve for an oil and gas well, which can adopt a simple structure to achieve continuous pumping of the oil and gas well and connect to the oil measuring vehicle, thereby reducing production losses, lowering labor costs and reducing the occurrence of lying wells.

[0006] To address the aforementioned technical issues, embodiments of the present application provide a wellhead fluid diverter valve for an oil and gas well, wherein one outlet on one side of the diverter valve is connected to the wellhead of the oil and gas well, and the other outlet on the other side is connected to an oil measuring vehicle. The wellhead fluid diverter valve comprises a body and a rotating body. The body is provided with a first channel, a second channel, a third channel, and a fourth channel, each of which is interconnected at one end and passes through the body at the other end. A docking cavity is provided at the interconnection point between the first channel, the second channel, the third channel, and the fourth channel. The rotating body is disposed within the docking cavity and, when rotated, is used to connect the different fluid channels, thereby maintaining the oil and gas well in a normal production or measurement state.

[0007] The oil and gas wellhead fluid diverter valve provided in the embodiments of the present application is constructed by providing four interconnected channels to form a docking chamber. A rotating body is disposed within the docking chamber. The rotating body rotates to connect different fluid channels, thereby enabling different channels to connect to the oil and gas wellhead or oil measuring vehicle, allowing the oil and gas well to be in production or measurement mode. This simple structure allows the oil and gas well to be connected to the oil measuring vehicle without stopping pumping, thereby reducing production losses, lowering labor costs, and reducing the occurrence of wells being left idle.

[0008] In some embodiments, the rotating body is a sphere, and a first rotating channel and a second rotating channel separated from each other are provided in the rotating body.

[0009] In some embodiments, the first channel is a production liquid inlet channel, the second channel is a production liquid outlet channel, the third channel is a measurement inlet channel, and the fourth channel is a measurement outlet channel.

[0010] In some embodiments, when the rotating body is in the production state, the first channel and the second channel are connected through the first rotating channel.

[0011] In some embodiments, when the rotating body rotates to the measuring state, the first channel is communicated with the third channel through the first rotation channel, and the fourth channel is communicated with the second channel through the second rotation channel.

[0012] In some embodiments, a pressure sensor is disposed through the wall of the second channel.

[0013] In some embodiments, a temperature sensor is further provided through the cavity wall of the second channel.

[0014] In some embodiments, a sealing member is provided between the rotating body and the cavity wall of the docking cavity.

[0015] In some embodiments, a conductive rod is provided on the outer wall of the rotating body.

[0016] In some embodiments, a limiting mechanism is provided on a side of the conductive rod facing away from the rotating body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 is a front cross-sectional view of an oil and gas wellhead fluid diverter valve provided by some embodiments of the present application in a production state;

[0019] Figure 2is a front cross-sectional view of an oil and gas wellhead fluid diverter valve provided by some embodiments of the present application in a measuring state;

[0020] Figure 3 This is a side sectional view of an oil and gas wellhead fluid diverter valve provided by some embodiments of the present application.

[0021] Explanation of the reference numerals: 11-main body; 111-first channel; 112-second channel; 113-third channel; 114-fourth channel; 115-docking chamber; 12-rotating body; 121-first rotating channel; 122-second rotating channel; 13-seal; 14-conduction rod; 15-limiting mechanism; 16-pressure sensor; 17-temperature sensor; 18-connecting end. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, it will be understood by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present application. The various embodiments can be combined with each other and referenced to each other under the premise of no contradiction.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0024] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0025] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections, or electrical connections; direct connections, or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0026] With the development of oil and gas production, oilfield production has entered a new stage of "four modernizations": standardized design, modular construction, standardized procurement, and enhanced information technology. To simplify the gathering and transportation process, oil and gas wells are increasingly connected to nearby gathering lines or operated in tandem. This makes it impossible to measure the production of individual wells at the pipeline. To verify the actual liquid production of an oil and gas well, it is necessary to use a metering oil truck at the wellhead to measure the liquid production. When measuring the liquid production of an oil and gas well using a metering oil truck, the liquid flow direction during production must be converted to the liquid flow direction during measurement. This requires a liquid flow diversion valve.

[0027] The traditional measurement method requires stopping the well, closing the production and back-pressure gates, and draining the well. The plug on the nozzle sleeve is then loosened, and the oil measuring channel is formed using the connection device of the oil measuring vehicle and the nozzle sleeve. After the oil measurement is completed, the oil and gas well is shut down, the production and back-pressure gates are closed, and the well is drained. The connection of the oil measuring vehicle is then disassembled, the production process is resumed, and the back-pressure and production gates are opened. The entire oil measurement process takes three employees approximately 60 minutes to complete. For some oil and gas wells, the draining process alone can take up to 60 minutes. Frequent well opening and closing, draining, and removing the nozzle sleeve plug can easily cause sand to get stuck in the well. The frequent draining poses safety and environmental risks and increases the workload of employees.

[0028] At present, the frequent opening and closing of wells when determining the production volume of oil and gas wells at the wellhead side has the following problems: First, there is a long shut-in time during measurement, and the temporary cessation of the flow of liquid in the well will affect the production of the oil and gas well; Second, the well is shut down for more than 30 minutes before being opened for measurement.

[0029] The error is large, and the measured production is inaccurate. Third, connecting the pipeline according to this operation requires shutting down the well twice. Frequent shutting down and starting the well will cause rod string fatigue and easy breakage. For wells producing sand or heavy oil and gas, long shutdowns can cause sand or heavy oil to block the well. Fourth, three people are required to operate, which results in high labor costs. Fifth, the temperature and back pressure cannot be recorded normally during the oil measurement process.

[0030] To address the aforementioned technical issues, embodiments of the present application provide a wellhead fluid diverter valve for oil and gas wells. This valve forms a docking chamber by providing four interconnected channels, and a rotating body is disposed within the docking chamber. The rotating body connects different fluid channels as it rotates, thereby enabling different channels to connect to the wellhead of the oil and gas well or to a measuring vehicle, placing the oil and gas well in either a production or measurement state. This simple structure allows the oil and gas well to be connected to the measuring vehicle without interruption, minimizing production losses, reducing labor costs, and reducing the occurrence of wells lying flat.

[0031] The following combination Figures 1 to 3 The following describes an oil and gas wellhead fluid diverter valve provided by some embodiments of the present application.

[0032] like Figure 1 As shown, some embodiments of the present application provide a wellhead fluid diverter valve for an oil and gas well, wherein one outlet of the diverter valve is connected to the wellhead of the oil and gas well, and the other outlet is connected to an oil measuring vehicle. The wellhead fluid diverter valve for an oil and gas well comprises a body 11 and a rotating body 12. The body 11 is provided with a first channel 111, a second channel 112, a third channel 113, and a fourth channel 114, one end of which is interconnected with the other end and passes through the body 11. A docking cavity 115 is provided at the interconnected locations of the first channel 111, the second channel 112, the third channel 113, and the fourth channel 114. The rotating body 12 is disposed within the docking cavity 115 and, when rotated, is used to connect the different fluid channels, thereby maintaining the oil and gas well in a normal production state or measurement state.

[0033] It should be noted that the body 11 is the main structure of the valve and is made of a suitable material such as iron, aluminum, or high-strength plastic that is corrosion-resistant and can be used under certain temperature and pressure conditions. The body 11 extends in four different directions to form four intersecting connecting ends 18, which can be perpendicular to each other or intersecting at a certain angle. The four connecting ends 18 are respectively provided with a first channel 111, a second channel 112, a third channel 113, and a fourth channel 114. The intersection of the four connecting ends 18 in the body 11 is provided with a docking cavity 115, which is approximately spherical in shape. One end of each of the four channels is connected at the docking cavity 115, and the other end extends through the corresponding connecting end 18 where the channel is located and is connected to the corresponding pipeline of the oil and gas wellhead or oil measuring vehicle. The rotating body 12 is sealed within the docking cavity 115. The rotating body 12 has different chambers, which can connect different connecting end 18 channels during rotation, thereby ensuring that the oil and gas well is in a normal production state or measurement state.

[0034] The oil and gas wellhead fluid diverter valve provided in the embodiments of the present application is constructed by providing four interconnected channels to form a docking chamber 115. A rotating body 12 is disposed within the docking chamber 115. Rotating body 12 connects different fluid channels, thereby enabling different channels to connect to the oil and gas wellhead or a measuring vehicle, placing the oil and gas well in a production or measurement state. This simple structure allows the oil and gas well to be connected to the measuring vehicle without interruption, thereby reducing production losses, lowering labor costs, and reducing the occurrence of wells lying flat.

[0035] In some embodiments of the present application, the rotating body 12 is a sphere, and a first rotating channel 121 and a second rotating channel 122 separated from each other are provided in the rotating body 12 .

[0036] It should be noted that the rotating body 12 serves as the valve core of the steering valve, is sealed in the docking chamber 115, and is set to a spherical shape to facilitate rotation in the docking chamber 115. The first rotating channel 121 and the second rotating channel 122 separated from each other can be rotated to different positions, forming different flow paths with the first channel 111, the second channel 112, the third channel 113 and the fourth channel 114, so that the oil and gas well can be in a normal production state or measurement state.

[0037] In some embodiments of the present application, the first channel 111 is a production liquid inlet channel, the second channel 112 is a production liquid outlet channel, the third channel 113 is a measurement inlet channel, and the fourth channel 114 is a measurement outlet channel.

[0038] It should be noted that the first channel 111 is the production liquid inlet channel, that is, the connection end 18 where the first channel 111 is located is directly connected to the production gate at the wellhead through a production clamp, and the fluid extracted from the oil and gas well enters the steering valve through the first channel 111. The second channel 112 is the production liquid outlet channel, that is, the connection end 18 where the second channel 112 is located is connected to the back pressure gate, and the liquid extracted from the oil and gas well is input into the gathering pipeline. The third channel 113 is the measurement inlet channel, that is, the third channel 113 is connected to the inlet of the oil measuring vehicle, and the fluid extracted from the oil and gas well is diverted by the steering valve and flows from the third channel 113 into the oil measuring vehicle for measurement. The fourth channel 114 is the measurement outlet channel, that is, the fourth channel 114 is connected to the outlet end of the oil measuring vehicle, and the measured fluid flows back into the steering valve via the fourth channel 114. When the oil and gas well is in production, fluid flows from the first channel 111 into the steering valve, then through the channel in the rotating body 12 to the second channel 112. The outlets of the third channel 113 and the fourth channel 114 can be connected using a threaded blind plug to ensure leak-free production. After the outlets of the third channel 113 and the fourth channel 114 are connected to the oil measuring vehicle, the rotating body 12 rotates a certain angle, so that when the oil and gas well is in measurement mode, the fluid flows from the first channel 111 into the steering valve, then through the channel in the rotating body 12 to the third channel 113. After measurement in the oil measuring vehicle, the fluid flows back into the steering valve through the fourth channel 114, and finally flows out of the second channel 112.

[0039] In some embodiments of the present application, when the rotating body 12 is in the production state, the first channel 111 and the second channel 112 are connected through the first rotating channel 121 .

[0040] It should be noted that if Figure 1 As shown by the arrows in the figure, during production, fluid flows from first channel 111 into the diverter valve, then through first rotary channel 121 in rotating body 12 to second channel 112. At this point, third channel 113 and fourth channel 114 are connected via second rotary channel 122. The outlets of third channel 113 and fourth channel 114 can be connected using a threaded blind plug to ensure leak-free production. The connection end 18 at the inlet of first channel 111 is connected to the production gate using a clamp. The connection end 18 at the outlet of second channel 112 is connected to the production process backpressure gate using a threaded connection, ensuring a leak-free connection during production and oil metering.

[0041] In some embodiments of the present application, when the rotating body 12 rotates to the measuring state, the first channel 111 and the third channel 113 are connected through the first rotating channel 121 , and the fourth channel 114 and the second channel 111 are connected through the second rotating channel 122 .

[0042] It should be noted that if Figure 2As shown by the arrows, after the outlets of the third channel 113 and the fourth channel 114 are connected to the oil measuring vehicle, the rotating body 12 rotates a certain angle, placing the oil and gas well in the measuring state. At this point, fluid flows from the first channel 111 into the steering valve, then through the first rotating channel 121 in the rotating body 12 to the third channel 113. After being measured in the oil measuring vehicle, it flows through the fourth channel 114 and the second rotating channel 122 back into the steering valve, ultimately exiting through the second channel 112. The connection end 18, where the outlet of the third channel 113 is located, is connected to the main body 11 via an oil measuring joint. The outlet utilizes a spherical seal and a threaded connection to achieve a leak-proof connection with the oil measuring vehicle.

[0043] In some embodiments of the present application, a pressure sensor 16 is provided through the cavity wall of the second channel 112 .

[0044] It should be noted that during the digital construction of oil fields, for the convenience of construction, pressure probes are installed on the plugs of the wellhead pipeline. After the wellhead is connected to the oil measuring vehicle, the plugs are removed, and normal pressure recording cannot be achieved. The second channel 112 is the liquid outlet channel. When the steering valve is in use, oil and gas wells can be measured without stopping. Placing the pressure sensor 16 at the liquid outlet channel can achieve all-weather monitoring of the liquid production pressure of the oil and gas wells. A pressure conduction hole is machined on the main body 11, and the conduction hole has a connector connected to the pressure sensor 16 to realize the detection and recording of pressure data.

[0045] In some embodiments of the present application, a temperature sensor 17 is further provided through the cavity wall of the second channel 112 .

[0046] It should be noted that during the digital construction of the oil field, for ease of construction, the temperature probe was also installed on the plug of the wellhead pipeline. After the wellhead was connected to the oil measuring vehicle, the plug was removed, making it impossible to obtain normal temperature readings. The second channel 112 is the production liquid outlet channel. When the steering valve is in use, oil and gas wells can be measured without stopping the well. Placing the temperature sensor 17 at the production liquid outlet channel can achieve all-weather monitoring of the oil and gas well production liquid temperature. A temperature conduction hole is machined in the body 11, and the conduction hole is equipped with an M20 thread to connect with the temperature sensor 17.

[0047] In some embodiments of the present application, a sealing member 13 is provided between the rotating body 12 and the cavity wall of the docking cavity 115 .

[0048] It should be noted that seal 13 can be made of a material such as rubber or plastic that exhibits a certain degree of elasticity and is resistant to corrosion and wear. Seal 13 ensures that oil and gas well fluids can flow through the flow channel formed between rotor 12 and body 11 during the rotation of rotor 12. This sealing is primarily achieved through precise fitting.

[0049] In some embodiments of the present application, a conductive rod 14 is provided on the outer wall of the rotating body 12 .

[0050] It should be noted that one end of the conductive rod 14 is connected to the outer wall of the rotating body 12, and the other end protrudes outside the main body 11, allowing connection to a power component such as a handle or motor. The connection between the conductive rod 14 and the rotating body 12 can be secured by a specifically shaped component or secured by other means. The conductive rod is controlled by human or electrical power to rotate, driving the rotating body 12 to various positions.

[0051] In some embodiments of the present application, a limiting mechanism 15 is provided on the side of the conducting rod 14 facing away from the rotating body 12 .

[0052] It should be noted that the limiting mechanism 15 can limit the position and angle of rotation of the rotating body 12 through a block of a certain shape. The specific limited rotation angle is determined by the angle between the corresponding channels of the four connecting ends 18. If the four connecting ends 18 on the main body 11 are in a vertical cross shape, the limiting mechanism 15 limits the rotation angle of the rotating body 12 to 90 degrees.

[0053] The oil and gas wellhead liquid flow diverter valve proposed in the embodiment of the present application is to transform the production process of crude oil and gas wells, realize liquid flow diversion on the original process, realize the connection of oil and gas wells without stopping, thereby reducing production losses, reducing labor costs and reducing the occurrence of lying wells. The liquid flow diverter valve of the present application meets the functions of oil collection, sampling, temperature and pressure recording of oil and gas wells during normal production; when it is necessary to measure oil, it is only necessary to directly connect the oil measuring vehicle under the normal production conditions of the oil and gas well, and after the connection is completed, rotate the rotating body 12 to a certain angle (which can be 90 degrees) to measure the oil, and the produced fluid directly enters the production process to achieve normal external transmission; after the oil measurement is completed, rotate the rotating body 12 in the opposite direction to achieve normal production, and the oil measuring vehicle is simply emptied and then disassembled to complete the oil measurement. The entire oil measurement process does not require production suspension or emptying, does not require frequent opening and closing of production gates and back pressure gates, and does not require disassembly of the oil nozzle threaded plug. After installation, the device can measure production at the wellhead without stopping the well, solving the problem of oil recovery during venting, reducing safety and environmental risks during operation, reducing labor costs, improving the working time of oil and gas wells, and realizing normal recording of back pressure and temperature of oil and gas wells during oil measurement. The liquid flow diverter valve of this application is suitable for all oil and gas wellhead liquid production measurement sites under the "four-in-one" mode, and has high application and promotion value.

[0054] The liquid flow diverter valve of the present application is reasonably designed, safe and reliable, convenient and quick to use, simple to operate, flexible and easy to use, realizes continuous and uninterrupted production of oil and gas wells, and can solve the long-standing problem of stopping wells to measure oil when multiple oil and gas wells share a pipeline for oil transportation in oil fields, reduces labor intensity, reduces measurement errors, improves well opening rate, increases crude oil production, and can achieve good social benefits.

[0055] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A fluid diverter valve at the wellhead of an oil or gas well, wherein one outlet of the diverter valve is connected to the wellhead of the oil or gas well, and the other outlet is connected to an oil measuring vehicle, characterized in that: include: The body is provided with a first channel, a second channel, a third channel and a fourth channel which are connected to each other at one end and pass through the body at the other end, and a docking cavity is provided at the place where the first channel, the second channel, the third channel and the fourth channel are connected to each other; The rotating body is arranged in the docking cavity and is used to connect different fluid channels when rotating, so that the oil and gas well is in a normal production state or measurement state.

2. The oil and gas wellhead fluid diverter valve according to claim 1, characterized in that: The rotating body is a sphere, and a first rotating channel and a second rotating channel separated from each other are provided in the rotating body.

3. The oil and gas wellhead fluid diverter valve according to claim 2, characterized in that: The first channel is a production liquid inlet channel, the second channel is a production liquid outlet channel, the third channel is a measurement inlet channel, and the fourth channel is a measurement outlet channel.

4. The oil and gas wellhead fluid diverter valve according to claim 3, characterized in that: When the rotating body is in a production state, the first channel and the second channel are communicated with each other through the first rotating channel.

5. The oil and gas wellhead fluid diverter valve according to claim 3, characterized in that: When the rotating body rotates to a measuring state, the first channel is communicated with the third channel through the first rotation channel, and the fourth channel is communicated with the second channel through the second rotation channel.

6. The oil and gas wellhead fluid diverter valve according to claim 3, characterized in that: A pressure sensor is provided through the cavity wall of the second channel.

7. The oil and gas wellhead fluid diverter valve according to claim 3, characterized in that: A temperature sensor is also provided through the cavity wall of the second channel.

8. The oil and gas wellhead fluid diverter valve according to claim 1, characterized in that: A sealing member is provided between the rotating body and the cavity wall of the docking cavity.

9. The oil and gas wellhead fluid diverter valve according to claim 1, characterized in that: The outer wall of the rotating body is provided with a conducting rod.

10. The oil and gas wellhead fluid diverter valve according to claim 9, characterized in that: A limiting mechanism is provided on the side of the conducting rod facing away from the rotating body.

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