Wellhead crude oil production metering device and metering method

Abstract

The application relates to the technical field of crude oil exploitation, and discloses a wellhead crude oil output metering device and a metering method. The device comprises a separation mechanism, and the separation mechanism further comprises a device base. The device is characterized by high-pressure bubble removal, and is provided with a pushing spring and a sealing slide plate in the device. When the pressure is greater, the pushing spring generates stronger counteraction. When liquid falls on the sealing slide plate and gas accumulates on the inner wall of a sedimentation cylinder, the pressure of the sedimentation cylinder increases, the sealing slide plate moves downward, and the pushing spring accumulates mechanical power. In the process, the counteraction of the pushing spring and the continuous input of raw materials in the raw material pipe will cause a high-pressure environment to be formed in the sedimentation cylinder. Under the high-pressure environment, bubbles generated by the falling of crude oil will break, bubbles floating on the surface of liquid are avoided, and the metering mechanism is prevented from being affected during metering and detection of the crude oil.

Description

Technical Field

[0001] This invention relates to the field of crude oil extraction equipment technology, specifically to a wellhead crude oil production metering device and metering method. Background Technology

[0002] Currently, real-time dynamic measurement of crude oil water cut in oil wells mainly falls into two categories: non-separation metering and partial separation metering. Non-separation metering methods, such as software-based oil measurement and novel intelligent multiphase flow meters, require stable oil well production, have relatively large measurement errors, and incur high costs. Partial separation metering methods, on the other hand, often employ gas-liquid separation metering. These methods are diverse, with applications including metering booths, tipping bucket metering, and metering carts. These methods are generally suitable for oil wells with low water cut and continuous oil production with low viscosity, but are not suitable for oil wells with high water cut and intermittent oil production.

[0003] During oil extraction, a large amount of natural gas is generated simultaneously. During crude oil extraction, natural gas mixes with crude oil and is discharged, which will cause a large error in the total amount measured by the metering device, affecting the accuracy of the measurement. To address the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a wellhead crude oil production metering device, including a separation mechanism, the separation mechanism also includes an equipment base, a sedimentation cylinder is fixedly connected to the top of the equipment base, a plurality of crude oil outlets are opened on the side wall of the sedimentation cylinder, and a plurality of natural gas outlets are opened on the side wall of the sedimentation cylinder.

[0005] The discharge mechanism includes a push spring fixedly connected to the top of the equipment base. A sealing slide plate is fixedly connected to the end of the push spring away from the equipment base. The outer wall of the sealing slide plate is slidably connected to the inner wall of the sedimentation tank. Several slide rods are fixedly connected to the top of the sealing slide plate.

[0006] The metering mechanism includes a pressure box fixedly connected to the side wall of the sedimentation tank, several retaining rings fixedly connected to the outer wall of the pressure box, and a gas metering instrument connected through the top of the pressure box.

[0007] Preferably, the separation mechanism further includes a collection plate fixedly connected to the inner wall of the sedimentation cylinder, and a plurality of gas separation ports are provided on the outer wall of the collection plate, with inclined baffles fixedly connected to the bottom of the gas separation ports.

[0008] Preferably, the separation mechanism also includes a discharge pipe fixedly connected to the inner wall of the equipment base. Several mud and sand discharge ports are provided on the side wall of the discharge pipe. A raw material spraying pipe is fixedly connected to the inner wall of the discharge pipe, and a raw material pipe is fixedly connected to the bottom of the raw material spraying pipe. Utilizing the separation characteristics and quality differences between natural gas and crude oil, a sedimentation tank is installed inside the equipment. Before using the equipment, the raw material pipe is installed at the wellhead position. Using the impact force of the oil well's external jet, the raw material is detected entering the raw material spraying pipe through the raw material pipe and, under the influence of the impact force, reaches... Figure 3 At the position of the collection plate, the raw material spraying pipe loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions. During this process, the gas remaining inside the mixed raw material will separate from the liquid. The liquid and the remaining solid will fall to the top of the sealed slide plate, and the gas will accumulate at the top of the sedimentation tank through the gas separation port.

[0009] Preferably, the discharge mechanism further includes a limiting block two fixedly connected to the side wall of the slide rod, a blocking ring one slidably connected to the inner wall of the sedimentation cylinder, a blocking ring two slidably connected to the inner wall of the sedimentation cylinder, and a limiting block one fixedly connected to the end of the slide rod away from the sealing slide plate. Utilizing the characteristics of high-pressure defoaming, a push spring and a sealing slide plate are installed inside the equipment. The greater the pressure on the push spring, the stronger the reaction force it generates. When liquid falls onto the sealing slide plate and gas accumulates on the inner wall of the sedimentation cylinder, as raw material is continuously input into the equipment through the raw material pipe, the pressure in the sedimentation cylinder increases, and the sealing slide plate moves downward, forcing the push spring to accumulate mechanical power. During this process, the reaction force generated by the push spring and the continuous input of raw material through the raw material pipe will cause a high-pressure environment to be formed inside the sedimentation cylinder. Under high pressure, the bubbles generated by the falling crude oil will burst, preventing the bubbles from floating on the liquid surface and affecting the metering mechanism's measurement and detection of crude oil.

[0010] Preferably, the discharge mechanism further includes a limiting ring fixedly connected to the inner wall of the first blocking ring. The inner wall of the through hole of the limiting ring is slidably connected to the outer wall of the slide rod. A limiting slider is slidably connected to the inner wall of the first blocking ring, and a return spring is fixedly connected to the side wall of the limiting slider. Utilizing the characteristic that the sealing slide plate moves downward under pressure during equipment operation, a mud and sand discharge port is provided inside the equipment. When the pressure inside the equipment base increases, the sealing slide plate moves downward along the outer wall of the discharge pipe under pressure. An inclined baffle is provided inside the equipment to form a partition inside the equipment base. This partition allows the mixed raw materials to pass through the collection plate. During the eruption, the liquid and internal impurities will fall along the discharge pipe onto the outer wall of the sealing slide plate, while the heavier sludge will remain at the bottom of the liquid. As the sealing slide plate moves downward, the high pressure inside the settling cylinder also increases simultaneously. When the sealing slide plate moves downward beyond the sludge discharge port, the high pressure environment inside the settling cylinder will squeeze the mixed liquid out through the sludge discharge port. At this time, the sludge at the bottom of the mixed liquid will be pushed through the sludge discharge port into the discharge pipe, thus discharging the sludge and impurities remaining inside the settling cylinder out through the sludge discharge port, preventing sludge and other impurities from affecting the total amount detection during oil output.

[0011] Preferably, the metering mechanism also includes an output pipe connected to the top of the gas metering instrument, a reinforcing plate fixedly connected to the side wall of the settling cylinder, a liquid metering instrument fixedly connected to the side wall of the reinforcing plate, and a collection ring connected to the outer wall of several crude oil discharge ports. In practical applications, after impurities are discharged, the high-pressure environment inside the settling cylinder decreases. At this time, the pressure at the top of the sealing slide plate decreases, and the reaction force generated by the push spring forces the sealing slide plate to move upwards, causing the push spring to cover the mud and sand discharge port again. As the raw material is transported through the raw material pipe, the pressure inside the settling cylinder increases again, and the sealing slide plate moves downwards again, resulting in the reciprocating motion of the sealing slide plate.

[0012] Preferably, the metering mechanism further includes a crude oil output pipe fixedly connected to the inner wall of the liquid metering instrument. The side wall of the crude oil output pipe is connected to the side wall of the collecting ring. A rotating fan blade is rotatably connected to the inner wall of the crude oil output pipe. When the sealing slide plate moves down for the first time, the sealing slide plate drives the limiting block two and the limiting block to move down through the slide rod, entering the interior of the blocking ring one and the blocking ring two. Specifically, the slide rod moves down along the inner wall of the limiting ring, and during the downward movement, the limiting block one squeezes the limiting slider, causing the limiting slider to move to both sides. Figure 5As shown, the first limiting block eventually crosses the limit of the limiting slider and is positioned between the limiting slider and the limiting ring. When the sealing slide plate reciprocates, the sealing slide plate drives the first and second blocking rings to move up and down via the sliding rod. When the blocking ring moves down, it forms a gap with the natural gas outlet, allowing the gas inside the sedimentation tank to enter the pressure box through the gap. The gas is then discharged outward from the gas meter and the output pipe. In addition, the second blocking ring moves up simultaneously, misaligning with the crude oil outlet to form a gap, allowing the crude oil liquid inside the equipment to enter the collection ring through the gap and be discharged outward from the collection ring through the crude oil output pipe. During this process, the rotating fan blades will rotate. The liquid meter detects the metering and discharge volume of crude oil output through the crude oil output pipe by detecting the rotation speed and number of rotations of the rotating fan blades.

[0013] A wellhead crude oil production metering device and method includes the following steps:

[0014] S1: This invention utilizes the characteristics of natural gas and crude oil separation and their different qualities. A sedimentation tank is installed inside the equipment. Before using the equipment, the raw material pipe is installed at the wellhead position.

[0015] S2: Utilizing the impact force of the oil well's external jet, the raw material is detected to enter the raw material spraying pipe through the raw material pipe and, under the influence of the impact force, reaches the position of the collection plate. The raw material spraying pipe loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions.

[0016] S3: During this process, the gas remaining inside the mixed raw materials will separate from the liquid, the liquid and the remaining solid will fall to the top of the sealed slide plate, and the gas will accumulate at the top of the sedimentation tank through the gas separation port.

[0017] The present invention has the following beneficial effects:

[0018] (1) This invention utilizes the characteristics of natural gas and crude oil separation and their different qualities. A sedimentation tank is installed inside the equipment. Before using the equipment, the raw material pipe is installed at the wellhead. The impact force of the oil well spray is used to detect the raw material entering the raw material spray pipe through the raw material pipe and reaching the bottom of the well under the influence of the impact force. Figure 3 At the position of the collection plate, the raw material spray pipe loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions. During this process, the gas remaining inside the mixed raw material will separate from the liquid, and the liquid and the remaining solids will fall to the top of the sealing plate. The gas accumulates at the top of the sedimentation tank through the gas separation port. Through the application of the above components, preliminary gas-liquid separation is achieved, avoiding the impact of residual natural gas in the crude oil on the metering accuracy of the equipment.

[0019] (2) This invention utilizes the characteristics of high-pressure defoaming. Inside the equipment, there is a push spring and a sealing slide plate. The greater the pressure on the push spring, the stronger the reaction force. When liquid falls onto the sealing slide plate and gas accumulates on the inner wall of the sedimentation tank, as the raw material pipe continuously feeds raw material into the equipment, the pressure in the sedimentation tank increases. The sealing slide plate moves down, forcing the push spring to accumulate mechanical power. During this process, the reaction force generated by the push spring and the continuous input of raw material from the raw material pipe will cause a high-pressure environment to be formed inside the sedimentation tank. Under high pressure, the bubbles generated by the falling crude oil will burst, preventing the bubbles from floating on the liquid surface and affecting the measurement and detection of crude oil by the metering mechanism.

[0020] (3) This invention utilizes the characteristic of the sealing slide plate being pressed down during equipment operation. A mud and sand discharge port is set inside the equipment. When the pressure inside the equipment base increases, the sealing slide plate is pressed down along the outer wall of the discharge pipe. An inclined baffle is set inside the equipment to form a partition inside the equipment base. When the mixed raw materials are sprayed inside the collection plate, the liquid and internal impurities will fall along the discharge pipe onto the outer wall of the sealing slide plate, while the heavier mud and sand will be at the bottom of the liquid. As the sealing slide plate moves down, the high pressure inside the sedimentation cylinder also increases synchronously. When the sealing slide plate moves down beyond the mud and sand discharge port, the high pressure environment inside the sedimentation cylinder will squeeze the mixed liquid out through the mud and sand discharge port. At this time, the mud and sand at the bottom of the mixed liquid will be pushed through the mud and sand discharge port into the discharge pipe, and the mud and sand impurities remaining inside the sedimentation cylinder will be discharged out through the mud and sand discharge port, avoiding the mud and sand impurities from affecting the total amount detection when oil is discharged.

[0021] (4) In practical application, after impurities are discharged, the high-pressure environment inside the sedimentation tank decreases. At this time, the pressure at the top of the sealing slide plate decreases, and the reaction force generated by the push spring will force the sealing slide plate to move upward, so that the push spring covers the mud and sand discharge port again. As the raw material is transported by the raw material pipe, the pressure inside the sedimentation tank increases again, and the sealing slide plate moves downward again, resulting in the phenomenon of reciprocating motion of the sealing slide plate. In addition, when the sealing slide plate moves downward for the first time, the sealing slide plate drives the limiting block two and the limiting block one to move downward through the sliding rod, and enters the blocking ring one and the blocking ring two. The details are as follows: the sliding rod moves downward along the inner wall of the limiting ring, and during the downward movement, the limiting block one squeezes the limiting slider, causing the limiting slider to move to both sides, such as Figure 5As shown, the first limiting block eventually crosses the limit of the limiting slider and is positioned between the limiting slider and the limiting ring. When the sealing slide plate reciprocates, the sealing slide plate drives the first and second blocking rings to move up and down via the sliding rod. When the blocking ring moves down, it forms a gap with the natural gas outlet, allowing the gas inside the sedimentation tank to enter the pressure box through the gap. The gas is then discharged outward from the gas meter and the output pipe. In addition, the second blocking ring moves up simultaneously, misaligning with the crude oil outlet to form a gap, allowing the crude oil liquid inside the equipment to enter the collection ring through the gap and be discharged outward from the collection ring through the crude oil output pipe. During this process, the rotating fan blades will rotate. The liquid meter detects the metering and discharge volume of crude oil output through the crude oil output pipe by detecting the rotation speed and number of rotations of the rotating fan blades. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal components of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a cross-sectional schematic diagram of the separation mechanism of the present invention;

[0026] Figure 4 This is a cross-sectional schematic diagram of the material discharge mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged diagram of A in the middle;

[0028] Figure 6 This is a schematic diagram of the internal components of the measuring mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged diagram of B in the diagram;

[0030] Figure 8 This is a schematic diagram of the workflow of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] In the diagram: 1. Separation mechanism; 101. Equipment base; 102. Sedimentation cylinder; 103. Crude oil outlet; 104. Natural gas outlet; 105. Collection plate; 106. Gas separation port; 107. Inclined baffle; 108. Discharge pipe; 109. Sediment discharge port; 110. Raw material spray pipe; 111. Raw material pipe; 2. Discharge mechanism; 201. Push spring; 202. Sealing slide plate; 203. Slide rod; 20 4. Limiting block two; 205. Blocking ring one; 206. Limiting ring; 207. Limiting block one; 208. Limiting slider; 209. Return spring; 210. Blocking ring two; 3. Metering mechanism; 301. Pressure box; 302. Snap ring; 303. Gas meter; 304. Output pipe; 305. Reinforcing plate; 306. Liquid meter; 307. Crude oil output pipe; 308. Rotating fan blade; 309. Collection ring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1, please refer to Figure 1 - Figure 3 The present invention is a wellhead crude oil production metering device, including a separation mechanism 1, the separation mechanism 1 also includes an equipment base 101, a sedimentation cylinder 102 is fixedly connected to the top of the equipment base 101, a plurality of crude oil outlets 103 are opened on the side wall of the sedimentation cylinder 102, and a plurality of natural gas outlets 104 are opened on the side wall of the sedimentation cylinder 102.

[0035] The discharge mechanism 2 includes a push spring 201 fixedly connected to the top of the equipment base 101. A sealing slide plate 202 is fixedly connected to one end of the push spring 201 away from the equipment base 101. The outer wall of the sealing slide plate 202 is slidably connected to the inner wall of the sedimentation cylinder 102. Several slide rods 203 are fixedly connected to the top of the sealing slide plate 202.

[0036] The metering mechanism 3 includes a pressure box 301 fixedly connected to the side wall of the sedimentation cylinder 102. Several retaining rings 302 are fixedly connected to the outer wall of the pressure box 301, and a gas meter 303 is connected through the top of the pressure box 301.

[0037] The separation mechanism 1 also includes a collection plate 105 fixedly connected to the inner wall of the sedimentation cylinder 102. Several gas separation ports 106 are opened on the outer wall of the collection plate 105, and inclined baffles 107 are fixedly connected to the bottom of the gas separation ports 106.

[0038] The separation mechanism 1 also includes a discharge pipe 108 fixedly connected to the inner wall of the equipment base 101. Several mud and sand discharge ports 109 are provided on the side wall of the discharge pipe 108. A raw material spraying pipe 110 is fixedly connected to the inner wall of the discharge pipe 108, and a raw material pipe 111 is fixedly connected to the bottom of the raw material spraying pipe 110. Taking advantage of the separation characteristics and quality differences between natural gas and crude oil, a sedimentation tank 102 is installed inside the equipment. Before using the equipment, the raw material pipe 111 is installed at the wellhead. Using the impact force of the oil well spray, the raw material is detected entering the raw material spraying pipe 110 through the raw material pipe 111 and, under the influence of the impact force, reaches... Figure 3 At the position of the collection plate 105, the raw material spray pipe 110 loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions. During this process, the gas remaining inside the mixed raw material will separate from the liquid, and the liquid and the remaining solid will fall to the top of the sealing slide plate 202. The gas accumulates at the top of the sedimentation cylinder 102 through the gas separation port 106.

[0039] Example 2, please refer to Figure 4 - Figure 8 This invention relates to a wellhead crude oil production metering device. Based on Embodiment 1, the discharge mechanism 2 further includes a limiting block 204 fixedly connected to the side wall of the slide rod 203. A blocking ring 205 and a blocking ring 210 are slidably connected to the inner wall of the settling cylinder 102. A limiting block 207 is fixedly connected to the end of the slide rod 203 away from the sealing slide plate 202. Utilizing the characteristics of high-pressure defoaming, a pushing spring 201 and a sealing slide plate 202 are installed inside the device. The pushing spring 201 generates a reaction force when subjected to greater pressure. The stronger the pressure, the more liquid falls onto the sealing slide plate 202 and gas accumulates on the inner wall of the settling cylinder 102. As raw material is continuously fed into the equipment through the raw material pipe 111, the pressure in the settling cylinder 102 increases. The sealing slide plate 202 moves downward, forcing the push spring 201 to accumulate mechanical power. During this process, the reaction force generated by the push spring 201 and the continuous input of raw material through the raw material pipe 111 will cause a high-pressure environment to be formed inside the settling cylinder 102. Under high pressure, the bubbles generated by the falling crude oil will burst, preventing the bubbles from floating on the liquid surface and affecting the metering mechanism 3 in measuring and detecting the crude oil.

[0040] The discharge mechanism 2 also includes a limiting ring 206 fixedly connected to the inner wall of the blocking ring 205. The inner wall of the through hole of the limiting ring 206 is slidably connected to the outer wall of the slide rod 203. A limiting slider 208 is slidably connected to the inner wall of the blocking ring 205. A return spring 209 is fixedly connected to the side wall of the limiting slider 208. Taking advantage of the characteristic that the sealing slide plate 202 moves downward under pressure during equipment operation, a mud and sand discharge port 109 is provided inside the equipment. When the pressure inside the equipment base 101 increases, the sealing slide plate 202 is pressed down along the outer wall of the discharge pipe 108. An inclined partition 107 is provided inside the equipment to form a partition inside the equipment base 101. When the mixed raw materials are collected on the collection plate 1... During internal ejection, the liquid and internal impurities will fall along the discharge pipe 108 onto the outer wall of the sealing slide plate 202, while the heavier sludge will be at the bottom of the liquid. As the sealing slide plate 202 moves downward, the internal pressure of the sedimentation cylinder 102 also increases simultaneously. When the sealing slide plate 202 moves downward beyond the sludge discharge port 109, the high pressure environment inside the sedimentation cylinder 102 will squeeze the mixed liquid out through the sludge discharge port 109. At this time, the sludge at the bottom of the mixed liquid will be pushed through the sludge discharge port 109 into the discharge pipe 108, and the sludge and impurities remaining inside the sedimentation cylinder 102 will be discharged out through the sludge discharge port 109, avoiding the sludge and other impurities from affecting the total amount detection during oil output.

[0041] The metering mechanism 3 also includes an output pipe 304 that runs through the top of the gas metering instrument 303. A reinforcing plate 305 is fixedly connected to the side wall of the sedimentation cylinder 102, and a liquid metering instrument 306 is fixedly connected to the side wall of the reinforcing plate 305. A collection ring 309 runs through the outer wall of several crude oil discharge ports 103. In actual application, after impurities are discharged, the high-pressure environment inside the sedimentation cylinder 102 decreases. At this time, the pressure at the top of the sealing slide plate 202 decreases, and the reaction force generated by the push spring 201 will force the sealing slide plate 202 to move upward, so that the push spring 201 covers the mud and sand discharge port 109 again. As the raw material pipe 111 conveys more raw material, the pressure inside the sedimentation cylinder 102 increases again, and the sealing slide plate 202 moves downward again, resulting in the phenomenon of reciprocating motion of the sealing slide plate 202.

[0042] The metering mechanism 3 also includes a crude oil output pipe 307 fixedly connected to the inner wall of the liquid metering instrument 306. The side wall of the crude oil output pipe 307 is connected to the side wall of the collecting ring 309. A rotating fan blade 308 is rotatably connected to the inner wall of the crude oil output pipe 307. When the sealing slide plate 202 moves down for the first time, the sealing slide plate 202 drives the limiting block 204 and the limiting block 1 207 to move down through the slide rod 203, entering the interior of the blocking ring 1 205 and the blocking ring 210. As detailed below, the slide rod 203 moves down along the inner wall of the limiting ring 206, and during the downward movement, the limiting block 1 207 squeezes the limiting slider 208, causing the limiting slider 208 to move to both sides, such as... Figure 5 As shown, the limiting block 207 eventually crosses the limitation of the limiting slider 208 and is positioned between the limiting slider 208 and the limiting ring 206. When the sealing slide plate 202 reciprocates, the sealing slide plate 202 drives the blocking ring 205 and the blocking ring 210 to move up and down through the slide rod 203. When the blocking ring 205 moves down, it forms a gap with the natural gas outlet 104, allowing the gas inside the sedimentation tank 102 to enter the pressure tank 301 through the gap. The gas is then discharged outward from the gas meter 303 and the output pipe 304. In addition, the blocking ring 210 moves up synchronously, forming a gap with the crude oil outlet 103, allowing the crude oil liquid inside the equipment to enter the collection ring 309 through the gap, and then be discharged outward from the collection ring 309 through the crude oil output pipe 307. During this process, the rotating fan blade 308 will rotate. The liquid meter 306 detects the metering and discharge volume of crude oil output from the crude oil output pipe 307 by detecting the rotation speed and number of rotations of the rotating fan blade 308.

[0043] The manufacturing method of this manufacturing apparatus includes the following steps:

[0044] S1: This invention utilizes the characteristics of natural gas and crude oil separation and their different qualities. A sedimentation tank 102 is installed inside the equipment. Before using the equipment, the raw material pipe 111 is installed at the wellhead.

[0045] S2: Utilizing the impact force of the oil well jet, the raw material is detected to enter the raw material spraying pipe 110 through the raw material pipe 111 and reach the position of the collection plate 105 under the influence of the impact force. The raw material spraying pipe 110 loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions.

[0046] S3: During this process, the gas remaining inside the mixed raw materials will separate from the liquid, and the liquid and the remaining solids will fall to the top of the sealing slide plate 202, while the gas will accumulate at the top of the sedimentation cylinder 102 through the gas separation port 106.

[0047] One specific application of this embodiment is as follows: Taking advantage of the separation and quality differences between natural gas and crude oil, the present invention includes a sedimentation tank 102 inside the equipment. Before using the equipment, the raw material pipe 111 is installed at the wellhead. Utilizing the impact force of the oil well spray, the raw material is detected entering the raw material spray pipe 110 through the raw material pipe 111 and, under the influence of the impact force, reaches... Figure 3At the position of the collection plate 105, the raw material spraying pipe 110 loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions. During this process, the gas remaining inside the mixed raw material will separate from the liquid. The liquid and the remaining solid will fall to the top of the sealing slide plate 202, and the gas will accumulate at the top of the sedimentation cylinder 102 through the gas separation port 106. The equipment is equipped with a push spring 201 and a sealing slide plate 202. The greater the pressure, the stronger the reaction of the push spring 201. As the liquid falls onto the sealing slide plate 202 and the gas accumulates on the inner wall of the sedimentation cylinder 102, the pressure in the sedimentation cylinder 102 increases as the raw material pipe 111 continuously feeds raw material into the equipment. The sealing slide plate 202 moves downward, forcing the push spring to... Spring 201 accumulates mechanical power. During this process, the reaction force generated by spring 201 and the continuous input of raw material through raw material pipe 111 will cause a high-pressure environment to form inside sedimentation cylinder 102. Under high pressure, the bubbles generated by the falling crude oil will burst, preventing the bubbles from floating on the liquid surface and affecting the metering mechanism 3 in measuring and detecting crude oil. Utilizing the characteristic of the sealing slide plate 202 moving downward under pressure, a mud and sand discharge port 109 is set inside the equipment. When the pressure inside the equipment base 101 increases, the sealing slide plate 202 moves downward along the outer wall of the discharge pipe 108. An inclined baffle 107 is set inside the equipment to form a partition inside the equipment base 101. When the mixed raw material is ejected inside the collection plate 105, the liquid and internal impurities are separated. The sediment will fall along the discharge pipe 108 onto the outer wall of the sealing slide plate 202, while the heavier sediment will remain at the bottom. As the sealing slide plate 202 moves downward, the high pressure inside the sedimentation tank 102 also increases simultaneously. When the sealing slide plate 202 moves downward past the sediment discharge port 109, the high pressure environment inside the sedimentation tank 102 will force the mixed liquid to be discharged outward through the sediment discharge port 109. At this time, the sediment at the bottom of the mixed liquid will be pushed through the sediment discharge port 109 into the discharge pipe 108, and the sediment impurities remaining inside the sedimentation tank 102 will be discharged outward through the sediment discharge port 109. In practical applications, after the impurities are discharged, the high pressure environment inside the sedimentation tank 102 decreases, and the pressure at the top of the sealing slide plate 202 decreases. The reaction force generated by the pushing spring 201 will force the sealing slide plate 202 to move upward, causing the pushing spring 201 to cover the mud and sand discharge port 109 again. As the amount of raw material transported by the raw material pipe 111 increases, the internal pressure of the sedimentation cylinder 102 increases again, and the sealing slide plate 202 moves downward again, resulting in the reciprocating motion of the sealing slide plate 202. In addition, when the sealing slide plate 202 moves downward for the first time, the sealing slide plate 202 drives the limiting block 204 and the limiting block 207 to move downward through the sliding rod 203, entering the interior of the blocking ring 205 and the blocking ring 210. As detailed below, the sliding rod 203 moves downward along the inner wall of the limiting ring 206, and during the downward movement, the limiting block 207 squeezes the limiting slider 208, causing the limiting slider 208 to move to both sides. Figure 5As shown, the limiting block 207 eventually crosses the limitation of the limiting slider 208 and is positioned between the limiting slider 208 and the limiting ring 206. When the sealing slide plate 202 reciprocates, the sealing slide plate 202 drives the blocking ring 205 and the blocking ring 210 to move up and down through the slide rod 203. When the blocking ring 205 moves down, it forms a gap with the natural gas outlet 104, allowing the gas inside the sedimentation tank 102 to enter the pressure tank 301 through the gap. The gas is then discharged outward from the gas meter 303 and the output pipe 304. In addition, the blocking ring 210 moves up synchronously, forming a gap with the crude oil outlet 103, allowing the crude oil liquid inside the equipment to enter the collection ring 309 through the gap, and then be discharged outward from the collection ring 309 through the crude oil output pipe 307. During this process, the rotating fan blade 308 will rotate. The liquid meter 306 detects the metering and discharge volume of crude oil output from the crude oil output pipe 307 by detecting the rotation speed and number of rotations of the rotating fan blade 308.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wellhead crude oil production metering device, comprising a separation mechanism (1), the separation mechanism (1) further comprising an equipment base (101), a settling cylinder (102) fixedly connected to the top of the equipment base (101), a plurality of crude oil outlets (103) being provided on the side wall of the settling cylinder (102), and a plurality of natural gas outlets (104) being provided on the side wall of the settling cylinder (102), characterized in that, Also includes: The discharge mechanism (2) includes a push spring (201) fixedly connected to the top of the equipment base (101). A sealing slide plate (202) is fixedly connected to one end of the push spring (201) away from the equipment base (101). The outer wall of the sealing slide plate (202) is slidably connected to the inner wall of the sedimentation cylinder (102). Several slide rods (203) are fixedly connected to the top of the sealing slide plate (202). The metering mechanism (3) includes a pressure box (301) fixedly connected to the side wall of the sedimentation cylinder (102), a number of retaining rings (302) fixedly connected to the outer wall of the pressure box (301), and a gas meter (303) connected through the top of the pressure box (301). The separation mechanism (1) further includes a collection plate (105) fixedly connected to the inner wall of the sedimentation cylinder (102). The outer wall of the collection plate (105) is provided with a plurality of gas separation ports (106), and the bottom of the gas separation ports (106) is fixedly connected with an inclined baffle (107). The separation mechanism (1) also includes a discharge pipe (108) fixedly connected to the inner wall of the equipment base (101). The side wall of the discharge pipe (108) is provided with a plurality of mud and sand discharge ports (109). The inner wall of the discharge pipe (108) is fixedly connected to a raw material spraying pipe (110). The bottom of the raw material spraying pipe (110) is fixedly connected to a raw material pipe (111). The discharge mechanism (2) also includes a limiting block two (204) fixedly connected to the side wall of the slide rod (203), a blocking ring one (205) slidably connected to the inner wall of the sedimentation cylinder (102), a blocking ring two (210) slidably connected to the inner wall of the sedimentation cylinder (102), and a limiting block one (207) fixedly connected to the end of the slide rod (203) away from the sealing slide plate (202).

2. The wellhead crude oil production metering device according to claim 1, characterized in that: The discharge mechanism (2) further includes a limiting ring (206) fixedly connected to the inner wall of the first blocking ring (205). The inner wall of the through hole of the limiting ring (206) is slidably connected to the outer wall of the slide rod (203). A limiting slider (208) is slidably connected to the inner wall of the first blocking ring (205). A return spring (209) is fixedly connected to the side wall of the limiting slider (208).

3. The wellhead crude oil production metering device according to claim 2, characterized in that: The metering mechanism (3) also includes an output pipe (304) that is connected through to the top of the gas meter (303), a reinforcing plate (305) that is fixedly connected to the side wall of the sedimentation cylinder (102), a liquid meter (306) that is fixedly connected to the side wall of the reinforcing plate (305), and a collection ring (309) that is connected through to the outer wall of several crude oil outlets (103).

4. The wellhead crude oil production metering device according to claim 3, characterized in that: The metering mechanism (3) also includes a crude oil output pipe (307) fixedly connected to the inner wall of the liquid meter (306). The side wall of the crude oil output pipe (307) is connected to the side wall of the collecting ring (309). A rotating fan blade (308) is rotatably connected to the inner wall of the crude oil output pipe (307).

5. The wellhead crude oil production metering device according to claim 4, characterized in that, The method of using the metering device includes the following steps: S1: Taking advantage of the separation and quality differences between natural gas and crude oil, a sedimentation tank (102) is installed inside the equipment. Before using the equipment, the raw material pipe (111) is installed at the wellhead. S2: Utilizing the impact force of the oil well external jet, the raw material is detected to enter the raw material spraying pipe (110) through the raw material pipe (111) and reach the position of the collection plate (105) under the influence of the impact force. The raw material spraying pipe (110) loses its restriction on the mixed raw material, and the mixed raw material will be sprayed in all directions. S3: During this process, the gas remaining inside the mixed raw materials will separate from the liquid, and the liquid and the remaining solid will fall to the top of the sealing slide plate (202), while the gas will accumulate at the top of the sedimentation cylinder (102) through the gas separation port (106).

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