Wellhead metering device of oil well

Abstract

The invention belongs to the field of oil well mouth metering, and discloses an oil well mouth metering device which comprises a box body, a fixing plate is arranged on one side of the outer wall of the box body through bolts, a filtering device is fixedly arranged in the fixing plate, an oil inlet device is fixedly arranged on one side of the outer wall of the filtering device, an oil passing pipe is fixedly arranged below the filtering device, and an exhaust pipe is movably arranged above the filtering device. An oil storage tank is fixedly arranged on the inner wall of the box body, an oil discharge pipe is fixedly arranged on one side of the oil storage tank, a dispersing device is fixedly arranged above the oil storage tank, a hybrid power device is fixedly arranged below the dispersing device, a collecting plate is arranged above the dispersing device, and a gas collecting device is fixedly arranged above the box body; the problems that in the prior art, a traditional oil and gas metering mode usually needs to collect oil produced by multiple wells to a centralized processing station for metering, but the mode has the defects of low metering precision, data lag, high operation cost and the like, and is difficult to adapt to complex oil field production management requirements are solved, and the oil and gas metering device is suitable for oil well collection.

Description

Technical Field

[0001] The invention relates to the technical field of oil well wellhead metering, in particular to an oil well wellhead metering device. Background Art

[0002] The wellhead branch metering device for a single oil well is a key device in the oil production process. It is mainly used to measure the flow rate of multiphase fluids such as oil, gas, and water produced by a single oil well. The development background of this metering device stems from the urgent need for accurate measurement in the oil industry. As the exploitation of oil resources enters a difficult stage, oil field development shows a trend of multi-well production, and the traditional centralized metering method can no longer meet the requirements of modern oil production for high precision, high efficiency and real-time monitoring.

[0003] Traditional oil and gas metering methods usually require the production of multiple wells to be collected at a centralized processing station for metering. However, this method has defects such as low metering accuracy, data lag, and high operating costs, making it difficult to adapt to the complex production management needs of oil fields. Especially in remote and complex terrain areas, the construction of centralized metering stations faces great challenges and high operation and maintenance costs. On the other hand, the differences in single well production and the dynamic changes in well conditions require more flexible and real-time metering methods.

[0004] In order to meet these challenges, an oil well wellhead metering device is proposed, which can directly monitor and measure the output of each wellhead independently, continuously and in real time, separate the gas and liquid phases and use multiphase flow metering technology at the same time, which can effectively distinguish the flow rate of oil and gas fluids, reduce the harm of gas to oil pipelines and interference with the accuracy of liquid phase metering; it is conducive to identifying harmful gases in advance, reducing the damage of harmful gases to the oil transportation system and workers, saving the cost of harmful gas disposal, and solving the problem of manual oil measurement difficulties. In abnormal rain and snow weather, workers are prone to slipping, falling and other safety issues when going up large tanks, and even endangering people’s lives and property. In order to improve the happiness index of employees. Summary of the invention

[0005] The present invention is intended to provide an oil wellhead metering device to solve the problem that the traditional oil and gas metering method in the prior art usually requires the oil produced by multiple wells to be collected at a centralized processing station for metering. However, this method has the defects of low metering accuracy, data lag, high operating cost, etc., and is difficult to adapt to the complex oil field production management needs. Especially in remote and complex terrain areas, the construction of centralized metering stations faces great challenges and high operation and maintenance costs. On the other hand, there are problems such as the variability of single well production and the dynamic changes in well conditions.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil well wellhead metering device, comprising a box body, a fixing plate is bolted to one side of the outer wall of the box body, a filtering device is fixedly arranged inside the fixing plate, an oil inlet device is fixedly arranged to one side of the outer wall of the filtering device, an oil through pipe is fixedly arranged below the filtering device, an exhaust pipe is movably arranged above the filtering device, an oil storage tank is fixedly arranged on the inner wall of the box body, an oil discharge pipe is fixedly arranged on one side of the oil storage tank, a dispersion device is fixedly arranged above the oil storage tank, a hybrid device is fixedly arranged below the dispersion device, a collecting plate is arranged above the dispersion device, and an air collecting device is fixedly arranged above the box body;

[0007] The filtering device comprises a filter box fixedly mounted on the inner wall of a fixed plate, a filter cartridge fixedly arranged below the filter box, a threaded plate movably arranged on the inner wall of the filter cartridge, a plurality of filter plates evenly arranged on the surface of the threaded plate, and an oil pipe connected to the bottom of the filter cartridge.

[0008] Furthermore, the oil inlet device comprises an oil inlet pipe fixedly installed on one side of the filter box, an oil receiving pipe is fixedly provided at one end of the oil inlet pipe, and a microwave transmitter is adapted to be provided on the surface of the oil inlet pipe.

[0009] Furthermore, one end of the oil pipe is adapted to be connected with the filter cartridge, and the other end of the oil pipe is movably adapted to the dispersion device.

[0010] Furthermore, a flow sensor is adapted to be provided on the surface of the oil drain pipe.

[0011] Furthermore, the dispersion device includes a dispersion damping spring fixedly mounted on the inner wall of the oil storage tank, a dispersion plate fixedly arranged above the dispersion damping spring, and a plurality of dispersion holes evenly opened on the surface of the dispersion plate.

[0012] Furthermore, the hybrid device includes a plurality of hybrid rods fixedly installed below the dispersion plate, a hybrid plate is fixedly arranged below the hybrid rods, and a plurality of hybrid holes are evenly opened on the surface of the hybrid plate.

[0013] Furthermore, an exhaust ring is fixedly provided at one end of the exhaust pipe, the exhaust ring bolts are installed above the filter box, and auxiliary rings are symmetrically provided on the surface of the exhaust ring.

[0014] Furthermore, the gas collecting device includes a gas collecting pipe fixedly installed above the box body, a gas collecting ring is fixedly provided at one end of the gas collecting pipe, a filter is adapted to be provided on the inner wall of the gas collecting ring, an air outlet pipe is fixedly provided above the gas collecting ring, and a gas sensor is adapted to be provided on the surface of the gas collecting ring.

[0015] The beneficial effects of this technical solution are:

[0016] (1) In order to be able to pre-measure the oil content and calculate the oil content, two sets of electrodes and a microwave transmitter are adapted at one end of the device. When in use, the oil inlet pipe is connected to the oil receiving pipe to allow the oil to flow into the oil inlet pipe. The microwave transmitter is used to generate and transmit a microwave signal of a specific frequency and transmit the signal to a microwave receiver. The microwave receiver is used to receive the microwave signal after passing through the sample. The receiver records the intensity and phase changes of the microwave signal. These changes reflect the water content in the sample.

[0017] (2) In order to separate the oil and gas into two phases, a fixed plate is fixed on one side of the box body, and a filter device is adapted inside the fixed plate. After the water content of the oil is tested, the oil flows through the filter box to the threaded plate, and is rotated and moved to the oil pipe through the threaded plate. When flowing through the threaded plate, impurities in the oil are filtered by the filter plate, and the gas is passed through the exhaust pipe to the gas collecting device. The oil passes through the oil pipe to the top of the dispersion plate, so that the umbrella shape on the surface of the dispersion plate disperses the oil, and the oil drips into the oil storage tank through the dispersion holes;

[0018] At the same time, the height of the dispersion plate can be adjusted according to the change of the oil discharge amount. When the amount of oil discharged is large, the dispersion plate is subjected to greater pressure, so that the dispersion plate pushes the dispersion damping spring to deform, so that the dispersion plate is lowered, and the space between the dispersion plate and the collecting plate in the box is enlarged. When the amount of oil discharged decreases, the pressure on the dispersion plate is reduced, so that the dispersion plate rises, and at the same time, the hybrid rod below can be driven up and down while the dispersion plate moves up and down, so that the lifting and lowering of the hybrid rod drives the hybrid plate to lift up and down in the oil storage tank, so that the up and down movement of the hybrid plate stirs the oil in the oil storage tank, further increasing the oil and gas separation work;

[0019] When the oil pipe discharges the oil into the box, the oil sprays out in a fountain shape due to the impact of pressure, and impacts the surface of the collecting plate. The impact height is different according to the amount of oil discharged under pressure, so that the oil is dispersed when it impacts the surface of the collecting plate, increasing the separation of oil and gas. The umbrella-shaped collecting plate can better collect the oil and gas carried in the gas, so that the oil and gas adhere to the surface of the collecting plate, and when a certain amount is collected, the oil drips.

[0020] (3) In order to ensure the monitoring of the separated gas and prevent the harmful gas from being discharged and polluting or causing injury to the staff, a gas collecting device is provided above the box. When in use, the separated gas is collected into a gas collecting ring through the exhaust pipe and the gas collecting pipe, and the gas is monitored by the gas sensor in the gas collecting ring. The gas sensor detects the target gas by chemical reaction, electrochemical reaction or optical principle and outputs the corresponding electrical signal or digital signal. When the target gas contacts the detection element in the gas sensor, a series of specific reactions are triggered, which are converted into concentration signals. At the same time, when the gas is concentrated in the gas collecting ring, it is discharged through the gas outlet pipe, and the oil and gas carried in the gas are filtered and blocked by the filter in the gas collecting ring, thereby further increasing the effect of oil and gas separation and reducing the waste of oil during oil and gas separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of an oil wellhead metering device proposed by the present invention;

[0022] Figure 2 This is a second structural schematic diagram of an oil wellhead metering device proposed by the present invention;

[0023] Figure 3 This is one of the cross-sectional structural schematic diagrams of an oil well wellhead metering device proposed by the present invention;

[0024] Figure 4 This is a second schematic cross-sectional structure diagram of an oil wellhead metering device proposed by the present invention;

[0025] Figure 5 The third schematic diagram of the cross-sectional structure of an oil wellhead metering device proposed by the present invention;

[0026] Figure 6 The present invention is a schematic diagram of the internal planar structure of an oil wellhead metering device proposed by the present invention.

[0027] The names of the corresponding marks in the accompanying drawings are: 1. box body; 2. fixing plate; 3. filtering device; 4. oil inlet device; 5. oil pipe; 6. oil storage tank; 7. oil drain pipe; 8. hybrid device; 9. dispersion device; 10. collecting plate; 11. exhaust pipe; 12. gas collecting device; 301. filter box; 302. filter cartridge; 303. threaded plate; 304. filter plate; 401. oil connecting pipe; 402. oil inlet pipe; 403. microwave transmitter; 701. flow sensor; 801. hybrid rod; 802. hybrid plate; 901. dispersion damping spring; 902. dispersion plate; 903. dispersion hole; 1101. exhaust ring; 1102. auxiliary ring; 1201. gas collecting pipe; 1202. gas collecting ring; 1203. filter screen; 1204. gas outlet pipe; 1205. gas sensor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The specific implementation process is as follows:

[0030] Embodiment 1:

[0031] See also Figure 1-6 The present invention provides a technical solution: an oil well wellhead metering device, comprising a box body 1, a fixing plate 2 is bolted to one side of the outer wall of the box body 1, a filter device 3 is fixedly installed inside the fixing plate 2, an oil inlet device 4 is fixedly installed on one side of the outer wall of the filter device 3, the oil inlet device 4 comprises an oil inlet pipe 402 fixedly installed on one side of the filter box 301, an oil receiving pipe 401 is fixedly installed at one end of the oil inlet pipe 402, a microwave transmitter 403 is adapted to be installed on the surface of the oil inlet pipe 402, the microwave transmitter 403 is electrically connected to a power supply and a control device, an oil through pipe 5 is fixedly installed below the filter device 3, the other end of the oil through pipe 5 is movably adapted to a dispersion device 9, an exhaust pipe 11 is movably installed above the filter device 3, an oil storage tank 6 is fixedly installed on the inner wall of the box body 1, an oil discharge pipe 7 is fixedly installed on one side of the oil storage tank 6, a dispersion device 9 is fixedly installed above the oil storage tank 6, a hybrid device 8 is fixedly installed below the dispersion device 9, a collecting plate 10 is installed above the dispersion device 9, and a gas collecting device 12 is fixedly installed above the box body 1;

[0032] The specific implementation is as follows:

[0033] When in use, the oil inlet pipe 402 is connected to the oil receiving pipe 401 to allow the oil to flow into the oil inlet pipe 402. A microwave signal of a specific frequency is generated and emitted by the microwave transmitter 403, and the signal is transmitted to a microwave receiver. The microwave receiver is used to receive the microwave signal after passing through the sample. The receiver records the intensity and phase changes of the microwave signal, which reflect the water content in the sample.

[0034] Embodiment 2:

[0035] See also Figure 1-6The present invention provides a technical solution: an oil well wellhead metering device, comprising a box body 1, a fixing plate 2 is bolted to one side of the outer wall of the box body 1, a filter device 3 is fixedly installed inside the fixing plate 2, the filter device 3 comprises a filter box 301 fixedly installed on the inner wall of the fixing plate 2, a filter cartridge 302 is fixedly installed below the filter box 301, a threaded plate 303 is movably installed on the inner wall of the filter cartridge 302, a plurality of filter plates 304 are evenly installed on the surface of the threaded plate 303, the filter cartridge 302 is connected to the oil pipe 5 below, an oil inlet device 4 is fixedly installed on one side of the outer wall of the filter device 3, and the oil inlet device 4 ... a plurality of filter plates 304 are evenly installed on the surface of the threaded plate 303, a plurality of filter plates 304 are evenly installed on the surface of the threaded plate 303, a plurality of filter plates 304 are An oil inlet pipe 402 is provided on one side of the filter box 301, an oil receiving pipe 401 is fixedly installed at one end of the oil inlet pipe 402, a microwave transmitter 403 is adapted to be installed on the surface of the oil inlet pipe 402, an oil through pipe 5 is fixedly installed below the filter device 3, one end of the oil through pipe 5 is adapted to be connected with the filter cartridge 302, and the other end of the oil through pipe 5 is movably adapted with the dispersion device 9, an exhaust pipe 11 is movably installed above the filter device 3, an exhaust ring 1101 is fixedly installed at one end of the exhaust pipe 11, the exhaust ring 1101 is bolted above the filter box 301, an auxiliary ring 1102 is symmetrically installed on the surface of the exhaust ring 1101, and an oil storage tank is fixedly installed on the inner wall of the box body 1 6, an oil drain pipe 7 is fixedly installed on one side of the oil storage tank 6, a flow sensor 701 is adapted to be installed on the surface of the oil drain pipe 7, and the flow sensor 701 is electrically connected to the power supply and the control device. A dispersion device 9 is fixedly installed above the oil storage tank 6, and the dispersion device 9 includes a dispersion damping spring 901 fixedly installed on the inner wall of the oil storage tank 6, and a dispersion plate 902 is fixedly installed above the dispersion damping spring 901, and a plurality of dispersion holes 903 are evenly opened on the surface of the dispersion plate 902. A hybrid device 8 is fixedly installed below the dispersion device 9, and the hybrid device 8 includes a plurality of hybrid rods 801 fixedly installed below the dispersion plate 902, and the hybrid rods 80 1, a hybrid plate 802 is fixedly installed below, and a plurality of hybrid holes are evenly opened on the surface of the hybrid plate 802. A collecting plate 10 is installed above the dispersion device 9. A gas collecting device 12 is fixedly installed above the box body 1. The gas collecting device 12 includes a gas collecting pipe 1201 fixedly installed above the box body 1. A gas collecting ring 1202 is fixedly installed at one end of the gas collecting pipe 1201. A filter screen 1203 is adapted to be installed on the inner wall of the gas collecting ring 1202. An air outlet pipe 1204 is fixedly installed above the gas collecting ring 1202. A gas sensor 1205 is adapted to be installed on the surface of the gas collecting ring 1202. The gas sensor 1205 is electrically connected to a power supply and a control device.

[0036] The specific implementation is as follows:

[0037] After the test of the water content of the oil is completed, the oil flows through the filter box 301 to the threaded plate 303, and is rotated and moved to the oil pipe 5 by the threaded plate 303. When flowing through the threaded plate 303, impurities in the oil are filtered by the filter plate 304, and the gas is passed through the exhaust pipe 11 to reach the gas collecting device 12. The oil passes through the oil pipe 5 to the top of the dispersion plate 902, and the umbrella-shaped surface of the dispersion plate 902 disperses the oil, and the oil drips into the oil storage tank 6 through the dispersion holes 903;

[0038] At the same time, the dispersion plate 902 can adjust the height of the dispersion plate 902 according to the change of the oil discharge amount. When the amount of oil discharged is large, the dispersion plate 902 is subjected to a large pressure, so that the dispersion plate 902 pushes the dispersion damping spring 901 to deform, so that the dispersion plate 902 descends, and the space between the dispersion plate 902 and the collecting plate 10 in the box body 1 becomes larger. When the amount of oil discharged decreases, the pressure on the dispersion plate 902 decreases, so that the dispersion plate 902 rises, and at the same time, the dispersion plate 902 can drive the hybrid rod 801 below to rise and fall, so that the rise and fall of the hybrid rod 801 drives the hybrid plate 802 to rise and fall in the oil storage tank 6, so that the up and down movement of the hybrid plate 802 stirs the oil in the oil storage tank 6, further increasing the oil-gas separation work;

[0039] When the oil pipe 5 discharges the oil into the box body 1, the oil is sprayed out in a fountain shape due to the impact of pressure, and the oil impacts the surface of the collecting plate 10. The impact height is different according to the amount of oil discharged by pressure, so that the oil is dispersed when it impacts the surface of the collecting plate 10, thereby increasing the separation of oil and gas. The umbrella-shaped collecting plate 10 can better collect the oil and gas carried in the gas, so that the oil and gas adhere to the surface of the collecting plate 10, and when a certain amount is collected, the oil drips.

[0040] Embodiment three:

[0041] See also Figure 1-6The present invention provides a technical solution: an oil wellhead metering device, comprising a box body 1, a fixing plate 2 is bolted to one side of the outer wall of the box body 1, a filter device 3 is fixedly installed inside the fixing plate 2, an oil inlet device 4 is fixedly installed on one side of the outer wall of the filter device 3, an oil pipe 5 is fixedly installed below the filter device 3, the other end of the oil pipe 5 is movably adapted to a dispersion device 9, an exhaust pipe 11 is movably installed above the filter device 3, an oil storage tank 6 is fixedly installed on the inner wall of the box body 1, an oil discharge pipe 7 is fixedly installed on one side of the oil storage tank 6, a dispersion device 9 is fixedly installed above the oil storage tank 6, and a distribution device 9 is fixedly installed above the oil storage tank 6. A hybrid device 8 is fixedly installed below the dispersion device 9, a collecting plate 10 is installed above the dispersion device 9, and a gas collecting device 12 is fixedly installed above the box body 1. The gas collecting device 12 includes a gas collecting pipe 1201 fixedly installed above the box body 1, a gas collecting ring 1202 is fixedly installed at one end of the gas collecting pipe 1201, a filter screen 1203 is adapted to be installed on the inner wall of the gas collecting ring 1202, an air outlet pipe 1204 is fixedly installed above the gas collecting ring 1202, a gas sensor 1205 is adapted to be installed on the surface of the gas collecting ring 1202, and the gas sensor 1205 is electrically connected to a power supply and a control device;

[0042] The specific implementation is as follows:

[0043] When in use, the separated gas is collected in the gas collecting ring 1202 through the exhaust pipe 11 and the gas collecting pipe 1201, and the gas is monitored by the gas sensor 1205 in the gas collecting ring 1202. The gas sensor 1205 detects the target gas using chemical reaction, electrochemical reaction or optical principle, and outputs corresponding electrical signal or digital signal. When the target gas contacts the detection element in the gas sensor 1205, a series of specific reactions are triggered, which are converted into concentration signals. At the same time, when the gas is concentrated in the gas collecting ring 1202, it is discharged through the gas outlet pipe 1204, and the oil and gas carried in the gas is filtered and blocked by the filter 1203 in the gas collecting ring 1202, thereby further increasing the oil and gas separation effect and reducing the waste of oil during oil and gas separation.

[0044] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An oil wellhead metering device, comprising a housing (1), characterized in that: A fixing plate (2) is bolted to one side of the outer wall of the box body (1), a filter device (3) is fixedly provided inside the fixing plate (2), an oil inlet device (4) is fixedly provided to one side of the outer wall of the filter device (3), an oil passage pipe (5) is fixedly provided below the filter device (3), an exhaust pipe (11) is movably provided above the filter device (3), an oil storage tank (6) is fixedly provided to the inner wall of the box body (1), an oil discharge pipe (7) is fixedly provided to one side of the oil storage tank (6), a dispersion device (9) is fixedly provided above the oil storage tank (6), a hybrid device (8) is fixedly provided below the dispersion device (9), a collecting plate (10) is provided above the dispersion device (9), and an air collecting device (12) is fixedly provided above the box body (1); The filtering device (3) comprises a filtering box (301) fixedly mounted on the inner wall of the fixing plate (2); a filtering cartridge (302) is fixedly arranged below the filtering box (301); a threaded plate (303) is movably arranged on the inner wall of the filtering cartridge (302); a plurality of filtering plates (304) are evenly arranged on the surface of the threaded plate (303); and the bottom of the filtering cartridge (302) is in communication with the oil passage (5).

2. An oil wellhead metering device according to claim 1, characterized in that: The oil inlet device (4) comprises an oil inlet pipe (402) fixedly mounted on one side of the filter box (301), an oil receiving pipe (401) being fixedly disposed at one end of the oil inlet pipe (402), and a microwave transmitter (403) being adapted on the surface of the oil inlet pipe (402).

3. The oil wellhead metering device according to claim 1, characterized in that: One end of the oil passage pipe (5) is adaptably connected to the filter cartridge (302), and the other end of the oil passage pipe (5) is movably adaptably connected to the dispersion device (9).

4. The oil wellhead metering device according to claim 1, characterized in that: The surface of the oil drain pipe (7) is equipped with a flow sensor (701).

5. The oil wellhead metering device according to claim 1, characterized in that: The dispersion device (9) comprises a dispersion damping spring (901) fixedly mounted on the inner wall of the oil storage tank (6), a dispersion plate (902) fixedly arranged above the dispersion damping spring (901), and a plurality of dispersion holes (903) evenly arranged on the surface of the dispersion plate (902).

6. The oil wellhead metering device according to claim 5, characterized in that: The hybrid device (8) comprises a plurality of hybrid rods (801) fixedly mounted below the dispersion plate (902), a hybrid plate (802) being fixedly arranged below the hybrid rods (801), and a plurality of hybrid holes being evenly arranged on the surface of the hybrid plate (802).

7. The oil wellhead metering device according to claim 1, characterized in that: An exhaust ring (1101) is fixedly provided at one end of the exhaust pipe (11), the exhaust ring (1101) is boltedly mounted above the filter box (301), and an auxiliary ring (1102) is symmetrically provided on the surface of the exhaust ring (1101).

8. The oil wellhead metering device according to claim 1, characterized in that: The gas collecting device (12) comprises a gas collecting pipe (1201) fixedly installed above the box body (1), a gas collecting ring (1202) fixedly provided at one end of the gas collecting pipe (1201), a filter screen (1203) adapted to be provided on the inner wall of the gas collecting ring (1202), an air outlet pipe (1204) fixedly provided above the gas collecting ring (1202), and a gas sensor (1205) adapted to be provided on the surface of the gas collecting ring (1202).

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