Metering device for liquid production capacity of oil production wellhead of oil field

Abstract

The invention discloses an oil field oil extraction wellhead liquid production capacity metering device, and belongs to the field of oil field oil extraction, the oil field oil extraction wellhead liquid production capacity metering device comprises a filtering kettle, a filtering box is fixedly connected below the filtering kettle, a conveying pipe is fixedly connected to the right side of the filtering kettle, a tank body is fixedly connected to the outer surface of the conveying pipe, and a rotating shaft is slidably connected to the upper portion of the conveying pipe in a penetrating mode; the rotating shaft penetrates through and is rotationally connected with the upper portion of the tank body, a driving part is arranged at the lower end of the rotating shaft, a supporting frame is fixedly connected to the left side of the tank body, and a rotating rod penetrates through and is rotationally connected with the upper portion of the supporting frame. The metering piece is arranged in the tank body to meter the liquid production capacity, when oil liquid is conveyed to the tank body from the conveying pipe, if the viscosity of the oil liquid is low, the driving piece can be impacted to rotate fast, and then the centrifugal piece is driven to pull the hydraulic piece so that the buffer piece can move to the lower end of the conveying pipe; therefore, the buffering effect is achieved, and errors caused by floating of the liquidometer due to generated waves are reduced.

Description

Technical Field

[0001] This application relates to the field of oil production in oil fields. Specifically, it relates to a liquid production volume metering device for an oil production wellhead in an oil field. Background Technique

[0002] Currently, the single-well liquid production volume metering methods used in domestic oil fields mainly include dynamometer card method metering, tipping bucket metering, mass flowmeter, skid-mounted metering vehicle, etc. The single-well metering process of the double-volume separator is to gather and transport the oil-gas mixture produced by the oil well to the transfer station. After gas-liquid separation through the upper chamber of the double-volume separator, the liquid volume enters the lower chamber of the double volume. When the liquid in the lower volume chamber reaches a certain height, the liquid level relay acts to send a signal to start the solenoid valve and gear pump. The metered oil is discharged into the oil pipeline, and at the same time, the counter counts once. Repeating this way can calculate the single-well liquid production volume metering data. Dynamometer card metering starts from the dynamometer card that can truly reflect the working conditions of the rod pump in the pumping system. Regarding the rod pump pumping system in directional wells as a complex three-dimensional vibration system, a mechanical and mathematical model and algorithm of this system are studied and established. The pump dynamometer card response under different wellhead dynamometer card excitations is calculated. The vector feature method is used to analyze the pump dynamometer card and identify faults, determine the effective stroke of the pump, and obtain the ground converted effective displacement of the oil well. Double-volume separator metering is a common, mature, and reliable technology in the single-well liquid production volume metering methods for oil wells. Its advantages are simple operation, accurate metering, convenient maintenance, etc.

[0003] The patent document with the publication number CN113323652B discloses a liquid production volume metering device for an oil production wellhead in an oil field. This invention discloses a liquid production volume metering device for an oil production wellhead in an oil field, which relates to the technical field of special metering devices for oil field production, and includes a filtration kettle for filtering oil, a storage tank for storing oil, a separation tank for oil-gas separation, and a metering tank for oil metering. The right side of the filtration kettle is connected to the left side of the storage tank through a filtration pipeline.

[0004] In the above application document, during metering, the buffer of the arc-shaped elastic pad makes the liquid level rise smoothly. However, the viscosity of the extracted oil is different. When the viscosity of the oil is high, the arc-shaped elastic pad will play a blocking role, reducing the oil output speed and making it inconvenient to buffer according to the oil viscosity. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a liquid production volume metering device for an oil production wellhead in an oil field, which solves the problems raised in the above background technique.

[0006] To achieve the above object, the present application provides an oil production well liquid production volume measuring device for an oilfield, which includes a filtration kettle. A filtration box is fixedly connected below the filtration kettle. A delivery pipe is fixedly connected to the right side of the filtration kettle. A tank body is fixedly connected to the outer surface of the delivery pipe. A rotating shaft penetrates and is slidably connected above the delivery pipe, and the rotating shaft penetrates and is rotatably connected to the upper part of the tank body. A driving member is arranged at the lower end of the rotating shaft. A support frame is fixedly connected to the left side of the tank body. A rotating rod penetrates and is rotatably connected above the support frame. A transmission member is connected in transmission between the rotating rod and the rotating shaft. A receiving seat is fixedly connected to the lower end of the rotating rod. A centrifugal member is arranged on the outer surface of the receiving seat. A buffer sheet is arranged on the inner surface of the tank body. A hydraulic member is arranged between the buffer sheet and the centrifugal member. A baffle is fixedly connected to the outer surface of the delivery pipe. An adjusting member for accelerating the driving speed is assembled above the driving member. A recycling member for secondary filtration and recycling of the filtered matter is assembled below the filtration kettle. A measuring member is assembled on the inner surface of the tank body.

[0007] Preferably, the transmission member includes a first sprocket and a second sprocket. The first sprocket is fixedly connected to the outer surface of the rotating shaft. The second sprocket is fixedly connected to the outer surface of the rotating rod. A chain is connected in transmission between the first sprocket and the second sprocket.

[0008] Preferably, the driving member includes a central shaft. The central shaft is fixedly connected to the lower end of the rotating shaft. A fan blade is rotatably connected to the outer surface of the central shaft. A sliding block is fixedly connected to the front end of the fan blade. A sliding ring is slidably connected to the outer surface of the sliding block.

[0009] Preferably, the hydraulic member includes a hydraulic pipe. The hydraulic pipe is fixedly connected to the left side of the tank body. A first piston rod and a second piston rod are slidably connected to the inner surface of the hydraulic pipe. The upper end of the first piston rod is rotatably connected to a rotating block. The second piston rod is fixedly connected to the left side of the buffer sheet. An elastic telescopic rod is fixedly connected between the buffer sheet and the right side of the inner surface of the tank body.

[0010] Preferably, the centrifugal member includes a rotating sleeve. The rotating sleeve is fixedly connected below the receiving seat. The rotating sleeve penetrates and is rotatably connected to the lower part of the support frame. A receiving pipe is fixedly connected to the outer surface of the receiving seat. Metal balls are arranged on the inner surface of the receiving pipe. Steel wires are connected by ropes between the metal balls and the rotating block.

[0011] Preferably, the measuring member includes a liquid level gauge. The liquid level gauge is fixedly connected to the top of the inner surface of the tank body. A liquid phase flowmeter is fixedly installed on the right side of the tank body.

[0012] Preferably, the adjusting member includes a support base, which is fixedly connected above the tank body. A second hydraulic chamber is fixedly connected to the left side of the support base. A second hydraulic rod is slidably connected to the inner surface of the second hydraulic chamber. The lower end of the second hydraulic rod is fixedly connected with a lifting ring. A push rod is fixedly connected below the lifting ring. The push rod penetrates and is slidably connected to the upper part of the tank body, penetrates and is slidably connected to the upper part of the delivery pipe, and is fixedly connected to the upper part of the sliding ring.

[0013] Preferably, the adjusting member further includes a first hydraulic chamber, which is fixedly connected below the support frame. The first hydraulic chamber is connected with the second hydraulic chamber through pipelines. A first hydraulic rod is slidably connected to the inner surface of the first hydraulic chamber. The first hydraulic rod is fixedly connected to the right side of the first piston rod.

[0014] Preferably, the recycling member includes a guiding frame, which is fixedly connected to the inner surface of the filtering box. A filter screen is fixedly connected to the inner surface of the guiding frame. A pumping pump is fixedly installed at the bottom of the inner surface of the filtering box. A pipeline is connected between the pumping pump and the delivery pipe through pipelines. The pipeline penetrates and is fixedly connected to the upper parts of the filtering box and the guiding frame.

[0015] Preferably, the recycling member further includes a connecting frame, which is fixedly connected between the filtering box and the tank body. A scraper is slidably connected above the filter screen. A connecting rod is fixedly connected to the right side of the scraper. The connecting rod penetrates and is slidably connected to the right side of the filtering box, penetrates and is slidably connected to the left side of the tank body, and is fixedly connected to the front side of the second piston rod.

[0016] The advantages of this application are as follows: (1) This application measures the liquid production volume by setting a metering member in the tank body. When the oil liquid is transported from the delivery pipe to the tank body, if the viscosity of the oil liquid is low, it will impact the driving member to rotate faster, and then drive the centrifugal member to pull the hydraulic member to move the buffer piece to the lower end of the delivery pipe, so as to play a buffering role to reduce the waves generated and prevent the liquid level gauge from floating and generating errors.

[0017] (2) While the centrifugal member pulls the hydraulic member, this application will also drive the adjusting member to adjust the inclination angle of the fan blades of the driving member, so that the fan blades can rotate faster, which has the effect of facilitating the acceleration of the moving speed of the buffer piece.

[0018] (3) This application sets a recycling member to perform secondary filtration and recycling on the oil liquid residue filtered from the filtration kettle. The movement of the buffer piece can clean the filter screen in the recycling member, which has the effect of facilitating the prevention of the filter screen from being blocked. Description of the Drawings

[0019] The accompanying drawings that form a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more apparent. The schematic embodiments of the accompanying drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a rear view of the overall structure of the present invention; Figure 3 is a sectional view of the overall structure of the present invention; Figure 4 is a rear sectional view of the overall structure of the present invention; Figure 5 is a schematic diagram of a partial structure of the present invention; Figure 6 is of the present invention Figure 1 a schematic enlarged view of the structure at position A; Figure 7 is of the present invention Figure 3 a schematic enlarged view of the structure at position B; Figure 8 is of the present invention Figure 4 a schematic enlarged view of the structure at position C.

[0020] In the above figures, 1, filtration kettle; 2, filtration box; 3, conveying pipe; 4, tank body; 401, rotating shaft; 402, support frame; 403, rotating rod; 404, receiving seat; 405, buffer piece; 406, baffle; 5, driving member; 501, central shaft; 502, fan blade; 503, sliding block; 504, sliding ring; 6, centrifugal member; 601, rotating sleeve; 602, receiving pipe; 603, metal ball; 604, steel wire rope; 7, hydraulic member; 701, hydraulic pipe; 702, first piston rod; 703, second piston rod; 704, rotating block; 705, elastic telescopic rod; 8, adjusting member; 801, support seat; 802, second hydraulic chamber; 803, second hydraulic rod; 804, lifting ring; 805, pushing rod; 806, first hydraulic chamber; 807, first hydraulic rod; 9, recycling member; 901, guiding frame; 902, filter screen; 903, pumping pump; 904, pipeline; 905, connecting frame; 906, scraper; 907, connecting rod; 10, transmission member; 101, first sprocket; 102, second sprocket; 103, chain; 11, measuring member; 111, liquid level gauge; 112, liquid phase flowmeter. Detailed implementation manners

[0021] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0022] It should be noted that the terms "first", "second", etc. in the specification, claims and the above-mentioned accompanying drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0024] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0025] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Embodiment 1, refer to Figures 1-8, this embodiment provides an oil production well liquid production metering device for oil fields, including a filtration kettle 1, which is used for preliminary filtration of oil liquid and is prior art. A filtration box 2 is fixedly connected below the filtration kettle 1, and a conveying pipe 3 is fixedly connected to the right side of the filtration kettle 1. The conveying pipe 3 is L-shaped, and a tank body 4 is fixedly connected to the outer surface of the conveying pipe 3. A rotating shaft 401 penetrates and is slidably connected above the conveying pipe 3, and a shaft seal is provided between the rotating shaft 401 and the conveying pipe 3. The rotating shaft 401 penetrates and is rotatably connected to the upper part of the tank body 4, and a bearing is provided between the rotating shaft 401 and the tank body 4. A driving member 5 is provided at the lower end of the rotating shaft 401. The driving member 5 includes a central shaft 501, which is fixedly connected to the lower end of the rotating shaft 401. Eight fan blades 502 are rotatably connected to the outer surface of the central shaft 501. A sliding block 503 is fixedly connected to the front end of the fan blade 502. The sliding block 503 is cylindrical, and a sliding ring 504 is slidably connected to the outer surface of the sliding block 503. The sliding ring 504 is annular, and an annular chute is provided on the inner circle. The sliding block 503 is arranged in the annular chute. A support frame 402 is fixedly connected to the left side of the tank body 4. The support frame 402 is C-shaped. A rotating rod 403 penetrates and is rotatably connected above the support frame 402. The rotating rod 403 penetrates and is rotatably connected to the upper part of the support frame 402, and a bearing is provided between the rotating rod 403 and the support frame 402. A transmission member 10 is provided between the rotating rod 403 and the rotating shaft 401. The transmission member 10 includes a first sprocket 101 and a second sprocket 102. The first sprocket 101 is fixedly connected to the outer surface of the rotating shaft 401, and the second sprocket 102 is fixedly connected to the outer surface of the rotating rod 403. The rotation of the rotating shaft 401 can drive the rotation of the rotating rod 403. A chain 103 is provided for transmission connection between the first sprocket 101 and the second sprocket 102. A receiving seat 404 is fixedly connected to the lower end of the rotating rod 403. The receiving seat 404 is hollow. A centrifugal member 6 is provided on the outer surface of the receiving seat 404. The centrifugal member 6 includes a rotating sleeve 601, which is fixedly connected to the lower part of the receiving seat 404. The rotating sleeve 601 is communicated with the receiving seat 404. The rotating sleeve 601 penetrates and is rotatably connected to the lower part of the support frame 402, and a bearing is provided between the rotating sleeve 601 and the support frame 402. A receiving pipe 602 is fixedly connected to the outer surface of the receiving seat 404. The receiving pipe 602 is slightly inclined upward. There are five receiving pipes 602, and the receiving pipes 602 are communicated with the receiving seat 404. The communication between the receiving pipes 602 and the receiving seat 404 is not large enough to pass a metal ball 603. A metal ball 603 is arranged on the inner surface of the receiving pipe 602. A steel wire rope 604 is connected between the metal ball 603 and a rotating block 704 by a rope. A buffer piece 405 is arranged on the inner surface of the tank body 4. The buffer piece 405 is arc-shaped and made of rubber, having a certain elasticity. A hydraulic member 7 is provided between the buffer piece 405 and the centrifugal member 6. The hydraulic member 7 includes a hydraulic pipe 701, in which a liquid is provided. The hydraulic pipe 701 is fixedly connected to the left side of the tank body 4.A first piston rod 702 and a second piston rod 703 are slidably connected to the inner surface of the hydraulic pipe 701. The first piston rod 702 is arranged at the upper opening of the hydraulic pipe 701, and the second piston rod 703 is arranged at the right opening of the hydraulic pipe 701. A rotating block 704 is rotatably connected to the upper end of the first piston rod 702. The second piston rod 703 is fixedly connected to the left side of the buffer sheet 405. An elastic telescopic rod 705 is fixedly connected between the buffer sheet 405 and the right side of the inner surface of the tank body 4. The elastic telescopic rod 705 specifically includes a sleeve rod and a movable rod, and a spring is arranged in the middle. The elastic telescopic rod 705 will automatically reset after being stretched and released. A retaining piece 406 is fixedly connected to the outer surface of the conveying pipe 3. An adjusting piece 8 for accelerating the driving speed is assembled above the driving piece 5. A recycling piece 9 for secondary filtering and recycling of the filtered matter is assembled below the filtration kettle 1. A measuring piece 11 is assembled on the inner surface of the tank body 4. The measuring piece 11 includes a liquid level gauge 111. The liquid level gauge 111 is used to measure the amount of oil in the tank body 4, which is the prior art. The liquid level gauge 111 is fixedly connected to the top of the inner surface of the tank body 4. A liquid-phase flowmeter 112 is fixedly installed on the right side of the tank body 4.,

[0028] When the above-mentioned device is in specific use, the oil fluid is first transported into the filtration kettle 1. The oil fluid will be filtered in the filtration kettle 1 first, and then transported into the tank body 4 through the delivery pipe 3. At this time, the water level of the oil fluid will rise in the tank body 4 until it reaches the liquid level gauge 111. After the liquid level gauge 111 is in place, it is counted as one box. Then the oil fluid is transported to the liquid-phase flowmeter 112, and the oil fluid is metered through the liquid-phase flowmeter 112. When the viscosity of the transported oil fluid is low, the transportation of the oil fluid in the delivery pipe 3 will impact the fan blade 502. The fan blade 502 will drive the middle shaft 501 to make the rotating shaft 401 rotate. The rotation of the rotating shaft 401 will drive the first sprocket 101 to rotate. The rotation of the first sprocket 101 will drive the chain 103 to make the second sprocket 102 rotate. The rotation of the second sprocket 102 will drive the rotating rod 403 to rotate. The rotation of the rotating rod 403 will drive the receiving seat 404 to rotate. The rotation of the receiving seat 404 will drive the receiving pipe 602 to rotate around the rotating rod 403. At this time, the centrifugal force generated by the rotation of the receiving seat 404 will drive the metal ball 603 to move in the receiving pipe 602 in the direction away from the rotating rod 403. At this time, the metal ball 603 will pull the steel wire rope 604 to make the rotating block 704 rise. The rotating block 704 will pull the first piston rod 702 to rise. After the first piston rod 702 rises, it will pump the liquid in the hydraulic pipe 701, thereby driving the second piston rod 703 to retract into the hydraulic pipe 701. At this time, the second piston rod 703 will move to the left. The second piston rod 703 will pull the buffer piece 405 to move it to the lower end of the delivery pipe 3. At this time, the buffer piece 405 will buffer the oil fluid coming out of the lower end of the delivery pipe 3, thereby reducing the impact of the floating of the water wave on the liquid level gauge 111. If the viscosity of the oil fluid transported from the delivery pipe 3 is high and the oil fluid flow rate is low, the rotation of the rotating shaft 401 is not sufficient to generate enough centrifugal force, and the buffer piece 405 will not move to the lower end of the delivery pipe 3, thereby preventing the buffer piece 405 from blocking the transportation speed of the high-viscosity oil fluid.

[0029] Embodiment 2, see Figures 2-8, the adjusting member 8 includes a support base 801, the support base 801 is fixedly connected above the tank body 4, a second hydraulic chamber 802 is fixedly connected to the left side of the support base 801, a second hydraulic rod 803 is slidably connected to the inner surface of the second hydraulic chamber 802, the second hydraulic rod 803 and the second hydraulic chamber 802 are slidably connected by a piston, the lower end of the second hydraulic rod 803 is fixedly connected with a lifting ring 804, the lifting ring 804 is arranged around the rotating shaft 401, a push rod 805 is fixedly connected below the lifting ring 804, the number of the push rods 805 is two, the push rods 805 penetrate and are slidably connected above the tank body 4, the push rods 805 penetrate and are slidably connected above the conveying pipe 3, a rubber gasket is arranged between the push rod 805 and the conveying pipe 3, the push rod 805 is fixedly connected above the sliding ring 504, the adjusting member 8 further includes a first hydraulic chamber 806, a liquid is arranged in the first hydraulic chamber 806, the first hydraulic chamber 806 is fixedly connected below the support frame 402, the first hydraulic chamber 806 and the second hydraulic chamber 802 are connected by pipelines, the first hydraulic chamber 806 and the second hydraulic chamber 802 are connected and communicated by a hose, a first hydraulic rod 807 is slidably connected to the inner surface of the first hydraulic chamber 806, the first hydraulic rod 807 and the first hydraulic chamber 806 are slidably connected by a piston, the first hydraulic rod 807 is fixedly connected to the right side of the first piston rod 702, and the first hydraulic rod 807 is in an L shape.

[0030] When the above-mentioned equipment is specifically used, when the metal ball 603 pulls the steel wire rope 604 under the action of centrifugal force to drive the rotating block 704 to drive the first piston rod 702 to rise, at the same time, the rise of the first piston rod 702 will also drive the first hydraulic rod 807 to rise. The rise of the first hydraulic rod 807 will push the liquid in the first hydraulic chamber 806 to inject it into the second hydraulic chamber 802 through the hose, thereby pushing the second hydraulic rod 803 to extend from the second hydraulic chamber 802. At this time, the second hydraulic rod 803 will descend. The descent of the second hydraulic rod 803 will drive the lifting ring 804 to descend, the lifting ring 804 will drive the push rod 805 to descend, the descent of the push rod 805 will drive the sliding ring 504 to descend, the descent of the sliding ring 504 will drive the sliding block 503 to descend, and the descent of the sliding block 503 will drive the fan blade 502 to rotate a slight angle, so that the inclination of the fan blade 502 is increased. At this time, the transportation of the oil liquid in the conveying pipe 3 will drive the rotation speed of the fan blade 502 to increase, so as to increase greater centrifugal force, so as to accelerate the pulling of the buffer piece 405 to below the conveying pipe 3.

[0031] Example three, see Figures 1-3, the recycling part 9 includes a guiding frame 901. There is an opening in the middle of the guiding frame 901, and an inclined surface sunken towards the center is arranged on the upper surface. The guiding frame 901 is fixedly connected to the inner surface of the filtering box 2. A filter screen 902 is fixedly connected to the inner surface of the guiding frame 901. A pumping pump 903 is fixedly installed at the bottom of the inner surface of the filtering box 2. The pumping pump 903 is used to extract the mixed oil liquid in the filtering box 2. A pipeline 904 is connected between the pumping pump 903 and the conveying pipe 3 by pipelines. There are three bends on the pipeline 904. The pipeline 904 penetrates and is fixedly connected above the filtering box 2 and the guiding frame 901. The recycling part 9 further includes a connecting frame 905. The shape of the connecting frame 905 is a square shape. The connecting frame 905 is fixedly connected between the filtering box 2 and the tank body 4. A scraper 906 is slidably connected above the filter screen 902. The scraper 906 is used to scrape the residue above the filter screen 902. A connecting rod 907 is fixedly connected to the right side of the scraper 906. There are two bends on the connecting rod 907. The connecting rod 907 penetrates and is slidably connected to the right side of the filtering box 2. An annular rubber gasket is arranged between the connecting rod 907 and the filtering box 2. The connecting rod 907 penetrates and is slidably connected to the left side of the tank body 4. The connecting rod 907 is fixedly connected to the front surface of the second piston rod 703.

[0032] When the above-mentioned equipment is specifically used, after the oil liquid is filtered in the filtering kettle 1, the residue will be conveyed into the filtering box 2. At this time, the filter screen 902 in the filtering box 2 will conduct secondary filtration on the residue, blocking the waste residue above the filter screen 902, and the remaining oil liquid will fall to the bottom of the filtering box 2. At this time, the pumping pump 903 extracts the oil liquid in the filtering box 2 and makes it conveyed into the conveying pipe 3 through the pipeline 904, and finally falls into the tank body 4. When the second piston rod 703 pulls the buffer piece 405 to move to the lower end of the conveying pipe 3, the second piston rod 703 will also drive the connecting rod 907 to move leftward. By the leftward movement of the connecting rod 907, it will drive the scraper 906 to slide above the filter screen 902. The scraper 906 will push the waste residue above the filter screen 902 to prevent it from accumulating, thereby ensuring the dredging of the filter screen 902.

[0033] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. An oil production liquid volume measuring device for an oilfield production wellhead, comprising a filtration kettle, a filtration box is fixedly connected below the filtration kettle, a delivery pipe is fixedly connected to the right side of the filtration kettle, and a tank body is fixedly connected to the outer surface of the delivery pipe, characterized in that, A rotating shaft penetrates and is slidably connected above the conveying pipe. The rotating shaft penetrates and is rotatably connected to the upper part of the tank body. A driving member is arranged at the lower end of the rotating shaft. A support frame is fixedly connected to the left side of the tank body. A rotating rod penetrates and is rotatably connected above the support frame. A transmission member is connected in transmission between the rotating rod and the rotating shaft. A receiving seat is fixedly connected to the lower end of the rotating rod. A centrifugal member is arranged on the outer surface of the receiving seat. A buffer sheet is arranged on the inner surface of the tank body. A hydraulic member is arranged between the buffer sheet and the centrifugal member. A baffle is fixedly connected to the outer surface of the conveying pipe. An adjusting member for accelerating the driving speed is assembled above the driving member. A recycling member for secondary filtering and recycling of the filtered matter is assembled below the filtering kettle. A measuring member is assembled on the inner surface of the tank body.

2. The oil production liquid volume measuring device for an oilfield production wellhead according to claim 1, characterized in that The transmission member includes a first sprocket and a second sprocket. The first sprocket is fixedly connected to the outer surface of the rotating shaft. The second sprocket is fixedly connected to the outer surface of the rotating rod. A chain is connected in transmission between the first sprocket and the second sprocket.

3. The liquid production volume metering device for an oilfield production wellhead according to claim 1, characterized in that The driving member includes a central shaft. The central shaft is fixedly connected to the lower end of the rotating shaft. A fan blade is rotatably connected to the outer surface of the central shaft. A sliding block is fixedly connected to the front end of the fan blade. A sliding ring is slidably connected to the outer surface of the sliding block.

4. A liquid production volume measurement device for an oilfield production wellhead according to claim 1, characterized in that, The hydraulic member includes a hydraulic pipe. The hydraulic pipe is fixedly connected to the left side of the tank body. A first piston rod and a second piston rod are slidably connected to the inner surface of the hydraulic pipe. The upper end of the first piston rod is rotatably connected to a rotating block. The second piston rod is fixedly connected to the left side of the buffer sheet. An elastic telescopic rod is fixedly connected between the buffer sheet and the right side of the inner surface of the tank body.

5. The liquid production volume measuring device for an oil production wellhead in an oilfield according to claim 4, characterized in that, The centrifugal member includes a rotating sleeve. The rotating sleeve is fixedly connected below the receiving seat. The rotating sleeve penetrates and is rotatably connected to the lower part of the support frame. A receiving pipe is fixedly connected to the outer surface of the receiving seat. Metal balls are arranged on the inner surface of the receiving pipe. A steel wire rope is connected by a rope between the metal balls and the rotating block.

6. The liquid production volume metering device for an oil production wellhead in an oilfield according to claim 1, wherein The measuring member includes a liquid level gauge. The liquid level gauge is fixedly connected to the top of the inner surface of the tank body. A liquid phase flowmeter is fixedly installed on the right side of the tank body.

7. A liquid production volume measuring device for an oilfield oil production wellhead according to claim 3, characterized in that, The adjusting member includes a support seat. The support seat is fixedly connected to the upper part of the tank body. A second hydraulic chamber is fixedly connected to the left side of the support seat. A second hydraulic rod is slidably connected to the inner surface of the second hydraulic chamber. The lower end of the second hydraulic rod is fixedly connected to a lifting ring. A push rod is fixedly connected below the lifting ring. The push rod penetrates and is slidably connected to the upper part of the tank body. The push rod penetrates and is slidably connected to the upper part of the conveying pipe. The push rod is fixedly connected above the sliding ring.

8. A liquid production volume measuring device for an oilfield production wellhead according to claim 7, characterized in that, The adjusting member further includes a first hydraulic chamber. The first hydraulic chamber is fixedly connected to the lower part of the support frame. The first hydraulic chamber is connected by a pipeline to the second hydraulic chamber. A first hydraulic rod is slidably connected to the inner surface of the first hydraulic chamber. The first hydraulic rod is fixedly connected to the right side of the first piston rod.

9. A liquid production volume measuring device for an oilfield production wellhead according to claim 1, characterized in that, The recycling component includes a guiding frame, the guiding frame is fixedly connected to the inner surface of the filtering box, a filter screen is fixedly connected to the inner surface of the guiding frame, a pumping pump is fixedly installed at the bottom of the inner surface of the filtering box, a pipeline is connected between the pumping pump and the conveying pipe by pipeline, and the pipeline penetrates and is fixedly connected above the filtering box and the guiding frame.

10. A liquid production volume measuring device for an oilfield production wellhead according to claim 9, characterized in that, The recycling component further includes a connecting frame, the connecting frame is fixedly connected between the filtering box and the tank body, a scraper is slidably connected above the filter screen, a connecting rod is fixedly connected to the right side of the scraper, the connecting rod penetrates and is slidably connected to the right side of the filtering box, the connecting rod penetrates and is slidably connected to the left side of the tank body, and the connecting rod is fixedly connected to the front surface of the second piston rod.

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