CN210768733U - Well head viscous crude differential pressure constant volume weighing metering device - Google Patents
Well head viscous crude differential pressure constant volume weighing metering device Download PDFInfo
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Abstract
The utility model discloses a well head viscous crude differential pressure constant volume weighing and metering device, which comprises a housin, be provided with the heterogeneous inflow entrance that is used for letting in viscous crude and associated gas on the casing, be used for export of output gas's gas circuit and be used for the liquid circuit export of output liquid, be provided with high temperature heating device in the casing and be the whirl splitter column of vertical form, the inside cavity of casing passes through the whirl splitter column and separates formation extremely up-down gas region, mixing area and liquid region, heterogeneous inflow entrance and whirl splitter column are located mixing area, and the gas circuit export is located gas region, the gas circuit exit end is provided with the airflow meter that is used for measuring output gas, there is differential pressure sensor through the pipe connection between gas region and the liquid region, liquid circuit exit is provided with the controlling means who is used for controlling self to open and close and constant volume output liquid. The metering device realizes independent metering of gas and liquid through the cyclone separation principle, and has better accuracy and detection convenience.
Description
Technical Field
The utility model belongs to the technical field of flow measurement technique and specifically relates to a well head viscous crude differential pressure constant volume weighing and metering device is related to.
Background
Among oil and gas resources, heavy oil resources account for a considerable proportion. "heavy oil" refers to a crude oil having a viscosity greater than 100mPaS and a relative density greater than 0.92, or referred to as heavy oil, of degassed crude oil at reservoir temperature. The reserves of heavy oil in the world account for about 70% of the reserves of undeveloped crude oil in the world. In the process of oil field development, data such as liquid production amount, gas production amount and the like of an oil well are important basis for oil field operation management and underground gas storage amount analysis, and accurate data measurement is required.
The heavy oil well features low flow rate, low gas content, high viscosity and poor flowability of crude oil, and the crude oil is easy to form emulsified crude oil or foamed crude oil. This causes great difficulty in accurately measuring the flow of oil, gas and water in the thick oil. The separation and metering method is a common thick oil metering mode, and a traditional test separator is used for carrying out oil-gas-water three-phase separation or gas-liquid two-phase separation on thick oil and then respectively metering. However, due to the characteristics of the thick oil, the thick oil is separated by the separator with poor effect, and further a large measurement error is caused in the actual operation. After the thick oil is subjected to gas-liquid two-phase separation, the determination of the water content in the liquid phase is also a challenge, and the water content in the thick oil is generally determined by an offline sampling analysis method, but the overall metering mode is complex and the process is complicated.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a well head viscous crude differential pressure constant volume metering device that weighs, this metering device passes through the cyclone separation principle, realizes the gas-liquid and measures alone, and the measurement of liquid measure is learned through the measurement to the survey of liquid density, liquid total volume, has higher accuracy and detects the convenience.
In order to achieve the above purpose, the utility model provides a following technical scheme: a wellhead thickened oil differential pressure constant volume weighing metering device comprises a shell, wherein a multiphase inflow port for introducing thickened oil and associated gas, a gas path outlet for outputting natural gas and a liquid path outlet for outputting thickened oil are arranged on the shell, the shell is internally provided with a high-temperature heating device and a vertical cyclone separation column, the cavity inside the shell is separated by the cyclone separation column to form an up-down gas area, a mixing area and a liquid area, the multiphase inflow port and the cyclone separation column are positioned in the mixing area, the gas path outlet is positioned at the top part in the gas area, the outlet end of the gas path is provided with a gas flow meter for metering and outputting gas, a differential pressure sensor is connected between the gas area and the liquid area through a pipeline, and a control device which is used for controlling self opening and closing and can realize constant volume output of the thickened oil is arranged at the outlet of the liquid path.
By adopting the technical scheme, the thickened oil and the associated gas enter the shell, the thickened oil and the associated gas are separated through the centrifugal action of the cyclone separation column, an up-down gas area, a mixing area and a liquid area are formed in the shell, the gas is discharged from the gas path outlet at the upper end and is metered through the gas flowmeter, the liquid is deposited at the lower end of the shell, the differential pressure sensor acquires the pressure difference between the gas area and the liquid area, the liquid is continuously deposited, when the liquid discharge capacity is reached, the control device opens the liquid path outlet to complete constant volume output, and the metering of oil and water in the liquid volume is obtained by measuring and calculating the liquid mixing density and the water content through the differential pressure under the constant volume condition (specific volume);
differential pressure type density calculation formula: delta Pmax＝β＊g＊H(ΔPmaxThe maximum differential pressure is β, the liquid mixing density is β, the gravity acceleration is g, and the liquid discharge height is H), when the liquid density is obtained, the liquid quality can be obtained by calculation because the single liquid discharge is constant volume discharge, and the detection and metering mode has higher precision and convenience.
Furthermore, the control device comprises a delay flushing valve positioned in the liquid path outlet, the delay flushing valve is in sealing fit with the liquid path outlet, the control device also comprises a floater which can float up and down along with the liquid level height in the liquid area, and a connecting piece for driving the delay flushing valve to start is arranged between the floater and the delay flushing valve switch.
Through adopting above-mentioned technical scheme, when the inside liquid of casing does not reach the deposit volume, through delaying the sealed liquid way export of flashing valve, along with the continuous deposit of the inside liquid of casing, the float is kept away from and is delayed the flashing valve gradually, drives the switch of delaying the flashing valve through the connecting piece, accomplishes the emission of liquid, because delay the flashing valve closure and need certain time, accomplish the emission of liquid before the closure, realize the biphase separation of staged gas-liquid through above-mentioned mode, reach separately and detect the purpose of measurement.
Furthermore, the control device comprises a floater which can float up and down along with the height of the liquid level in the liquid area and a sealing sleeve for sealing the outlet of the gas path, a connecting rod is arranged between the floater and the sealing sleeve and is in hard connection with the floater and the sealing sleeve, and the outlet of the liquid path is connected with a siphon.
Through adopting above-mentioned technical scheme, because the siphon is connected to liquid way export below, when casing internal pressure reached a definite value, liquid accessible siphon discharges, along with liquid is the deposit constantly, the float keeps away from the liquid way export gradually, and drive the seal cover through the connecting rod with float rigid connection and move towards gas circuit export direction, seal cover seals the gas circuit export until, the oil gas that lets in of continuation, make the inside pressure increase of casing, when pressure is greater than the discharge pressure of siphon, liquid passes through the siphon and discharges, the constant volume of having realized liquid discharges the separation, reach the purpose that the gas-liquid divides the measurement.
Furthermore, the shell is of a hollow cylindrical structure, and the multiphase inflow port is connected in the tangential direction of the inner wall of the shell.
Through adopting above-mentioned technical scheme, viscous crude and associated gas get into from the many looks inflow entry to insert along shells inner wall tangential direction, viscous crude and associated gas flow in order to form the whirl along shells inner wall, and under centrifugal action, gaseous upward movement, liquid can be followed shells inner wall and flowed down, realize the gas-liquid separation measurement.
Furthermore, a mist catching filter screen is arranged inside the shell and is arranged at the gas path outlet.
By adopting the technical scheme, the thickened oil and the associated gas enter a mixing area in the shell from the multi-phase flow inlet, liquid is deposited downwards through the centrifugal action of the cyclone separation column, the gas moves upwards, and the gas passes through the mist catching filter screen to further separate micro liquid drops contained in the gas, so that the liquid components in the gas are reduced as much as possible, and the detection accuracy of the gas and the liquid is improved.
Furthermore, a first interlayer is arranged in the shell, and the high-temperature heating device comprises a steam inlet communicated with the first interlayer.
Through adopting above-mentioned technical scheme, steam gets into through steam inlet to at first intermediate layer inner loop, reach the purpose of the inside thick oil gas of heat preservation heating casing, avoid thick oil gas to become too sticky because of low temperature or normal atmospheric temperature, make thick oil gas keep higher mobility, and then ensure the accuracy that detects.
Furthermore, the shell is communicated with a thick oil heating pipe, a second interlayer is arranged in the thick oil heating pipe, the steam inlet is communicated with the second interlayer, the second interlayer is communicated with the first interlayer through a communicating pipe, and a steam outlet is arranged on the first interlayer.
Through adopting above-mentioned technical scheme, viscous crude and associated gas enter into the viscous crude heating pipe earlier, rethread viscous crude heating pipe enters into inside the casing, steam enters into the second intermediate layer outside the viscous crude heating pipe earlier, later enter into the first intermediate layer outside the casing through communicating pipe, steam at first carries out the primary heating to viscous crude and associated gas in the viscous crude heating pipe, make in viscous crude and the inflow casing that associated gas can be smooth, steam in the first intermediate layer mainly plays the heat preservation effect, steam is discharged from steam outlet, dual heating insulation construction is favorable to improving the mobility of viscous crude and associated gas, ensure the degree of accuracy that detects.
Further, the gas path outlet is a low-pressure end, the liquid path outlet is a high-pressure end, and the differential pressure sensor is respectively connected with the low-pressure end and the high-pressure end through pipelines.
By adopting the technical scheme, the differential pressure sensor is used for detecting the differential pressure value between the high-pressure end and the low-pressure end, the value of the differential pressure sensor gradually reaches the highest point, liquid begins to be discharged, the differential pressure value can be rapidly reduced to the zero point along with the discharge of the liquid, the signal value changes for one-time liquid discharge to achieve the purpose of liquid discharge counting, the time delta t required by each-time liquid discharge is recorded, and the height value of each-time liquid discharge is fixed H, namely, each-time liquid discharge is discharged in constant volume V, and the maximum value delta P of the differential pressure is measuredmaxAnd calculating the liquid mixing density β to obtain the water content gamma, i.e. the total mass flow Q of the liquid dischargemAnd mass flow rate Q of oil and water respectivelyOilAnd QWater (W)。
Furthermore, the liquid path outlet is connected with a siphon.
Through adopting above-mentioned technical scheme, when the casing is inside to reach certain pressure and carry out the flowing back, liquid can be rapid get into to siphon in, being provided with of siphon does benefit to quick discharge liquid, can also avoid liquid to remain.
Furthermore, the shells are provided with a plurality of groups, the adjacent shells are communicated with each other, and the gas path outlet and the liquid path outlet are positioned on any shell.
Through adopting above-mentioned technical scheme, the casing that a plurality of groups set up is favorable to accelerating the emission of gas and liquid, and then promotes weighing and metering device's detection measurement efficiency, simultaneously because the increase of volumetric can also be applicable to large-traffic operating mode.
Compared with the prior art, the utility model has the advantages that:
the metering device realizes independent metering of gas and liquid by utilizing the cyclone separation principle, has higher accuracy and is more convenient to detect.
Drawings
FIG. 1 is a first side view of the wellhead viscous crude differential pressure constant volume weighing and metering device of the utility model;
FIG. 2 is a front view of the utility model of a well head thick oil differential pressure constant volume weighing and metering device;
FIG. 3 is a second side view of the wellhead viscous crude differential pressure constant volume weighing and metering device of the utility model;
fig. 4 is a schematic view of the inside of a housing according to a first embodiment of the present invention (mainly used for embodying a control device);
fig. 5 is a schematic view of the inside of the housing according to the second embodiment of the present invention (mainly used for embodying the control device).
Reference numerals: 1. a housing; 101. a gas region; 102. a mixing region; 103. a liquid region; 2. a cyclone separation column; 3. An air path outlet; 4. a gas flow meter; 5. a multiphase flow inlet; 6. a liquid path outlet; 7. a mist catching filter screen; 8. a differential pressure sensor; 81. A low-voltage end; 82. a high-voltage end; 9. a siphon tube; 10. a delayed flush valve; 11. connecting ropes; 12. a float; 13. a connecting rod; 14. sealing sleeves; 15. a first interlayer; 16. a thickened oil heating pipe; 17. a second interlayer; 18. a steam inlet; 19. a steam outlet; 20. a communication pipe is provided.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Implementing one step:
as shown in fig. 1 and 2, a wellhead thick oil differential pressure constant volume weighing and metering device comprises a shell 1, the shell 1 is of a columnar structure, the shell 1 is provided with a plurality of groups, adjacent shells 1 are communicated, two specific communicated positions are provided, one position is at the upper end of the shell 1, the other position is at the lower end of the shell 1, any one shell 1 is provided with a multiphase flow inlet 5 for introducing thick oil and associated gas, a gas path outlet 3 for outputting gas and a liquid path outlet 6 for outputting liquid, the thick oil and the associated gas flow in from the multiphase flow inlet 5, gas-liquid separation is realized inside the shell 1, the liquid flows out from the liquid path outlet 6 at the lower end of the shell 1, the gas flows out from the gas path outlet 3 at the upper end of the shell 1, and independent metering is realized after separation.
A mist catching filter screen 7/a mist catcher and a cyclone separation column 2 are arranged in a shell 1 to separate gas and liquid of thick oil and associated gas, the cyclone separation column 2 is vertically arranged at the middle section of the shell 1, a cavity area in the shell 1 is separated into an up-down gas area 101, a mixing area 102 and a liquid area 103 through the centrifugal action of the cyclone separation column 2, a multiphase inflow port 5 and the cyclone separation column 2 are positioned in the mixing area 102, a gas path outlet 3 is positioned in the gas area 101, a gas flow meter 4 for metering and outputting gas is arranged on a gas pipeline at the end of the gas path outlet 3 to avoid the over-high internal pressure of the shell 1, a pressure release valve is also arranged on the gas pipeline, the mist catching filter screen 7 is horizontally arranged at the gas path outlet 3, the multiphase inflow port 5 is connected along the tangential direction of the inner wall of the shell 1, and the thick oil and the associated gas enter from the multiphase inflow port 5, can flow along the inner wall of the shell 1 to form a rotational flow, then through the centrifugal action of the rotational flow separation column 2, liquid is deposited downwards, gas moves upwards, the gas passes through the mist catching filter screen 7, the liquid part contained in the gas is further separated, the liquid content in the gas is reduced as much as possible, and the detection accuracy is improved.
The gas path outlet 3 is a low pressure end 81, the liquid path outlet 6 is a high pressure end 82, and the differential pressure sensor 8 is respectively connected with the low pressure end 81 and the high pressure end 82 through pipelines. The differential pressure sensor 8 is used for detecting a differential pressure value between the high pressure end 82 and the low pressure end 81, the value of the differential pressure sensor 8 gradually reaches the highest point, liquid begins to be discharged, the differential pressure value can be rapidly reduced to the zero point along with the discharge of the liquid, the signal value changes for one time corresponding to liquid discharge to achieve the purpose of liquid discharge counting, meanwhile, the time delta t required by each time of liquid discharge is recorded, and as the height value of each time of liquid discharge is fixed H, namely, each time of liquid discharge is discharged in a constant volume V mode, the maximum value delta P of the differential pressure is measured againmaxThe total mass flow rate Q of the discharged liquid volume of the liquid can be calculated by calculating the liquid mixing density β and thus the water content gammamAnd mass flow rate of oil and water, QOilAnd QWater (W)。
The specific calculation is as follows:
the liquid mixing density β is calculated by a differential pressure type density calculation formula, which comprises the following specific formula:
ΔPmax＝β＊g＊H(ΔPmaxmaximum differential pressure, β liquid mix density, g gravity acceleration, H design rowLiquid height), when the mixed density of the liquid is obtained β, the water content gamma in the liquid is obtained according to the mixed density, and the specific formula is as follows:
β＝γ*ρwater (W)+(1-γ)*ρOil；
(β denotes liquid mixture density,. gamma.denotes water content,. rho.Water (W)Is the density, rho, of waterOilAs thick oil density);
solution total volume flow QvThe concrete formula is as follows:
(Qvthe total volume flow of the liquid, V the volume of single discharge, Δ t the time required for single discharge);
solution total mass flow QmThe concrete formula is as follows: qm＝Qv*β；
(QmIs the total mass flow rate, QvTotal volume flow, β liquid mix density);
when the total mass flow Q of the liquid is obtainedmAnd then respectively solving the mass flow of the thickened oil and the mass flow of the water according to the water content gamma, wherein the concrete formula is as follows:
Qoil＝Qm(1-gamma) calculating the mass flow Q of the thickened oilOilUsing the formula QWater (W)＝QmGamma calculating water mass flow QWater (W)。
As shown in fig. 4, a control device for controlling opening and closing of the control device and outputting liquid at a constant volume is arranged at the liquid path outlet 6, the control device includes a delay flushing valve 10 located in the liquid path outlet 6, the delay flushing valve 10 and the liquid path outlet 6 can form a sealing fit, the control device further includes a float 12, the float 12 can float up and down along with the liquid level height in the liquid region 103, a connecting member is arranged between the float 12 and a switch of the delay flushing valve 10, and the connecting member can be a connecting rope 11. When the liquid in the shell 1 does not reach the deposition amount (namely when the designed pressure value of the shell 1 is not reached), the delay flushing valve 10 and the liquid path outlet 6 are kept sealed, along with the continuous deposition of the liquid in the shell 1, the floater 12 is gradually far away from the delay flushing valve 10, the switch of the delay flushing valve 10 is driven to be opened through the connecting rope 11, the liquid is rapidly discharged from the liquid path outlet 6, according to the characteristics of the liquid, the closing of the delay flushing valve 10 needs certain time, the liquid is discharged before the closing, in order to enable the liquid to be discharged quickly without residue, the siphon 9 is communicated with the liquid path outlet 6, the liquid and gas are discharged through the siphon effect, the two-phase separation is realized through the mode, and the aim of separately detecting and metering can be achieved.
In order to make viscous crude and associated gas have higher mobility, avoid normal atmospheric temperature or low temperature to cause the too viscous operating mode of viscous crude, metering device is still including high temperature heating device, this scheme specifically adopts steam heating, high temperature heating device is including connecting in casing 1's viscous crude heating pipe 16, be provided with second intermediate layer 17 in viscous crude heating pipe 16, be provided with steam inlet 18 at viscous crude heating pipe 16 entrance point, steam inlet 18 is linked together with second intermediate layer 17, still be provided with first intermediate layer 15 in casing 1, combine figure 3, second intermediate layer 17 is linked together through communicating pipe 20 with first intermediate layer 15, be provided with steam outlet 19 near lower extreme position at first intermediate layer 15.
The specific heating mode is as follows: thickened oil and associated gas enter into thickened oil heating pipe 16 earlier, rethread thickened oil heating pipe 16 enters into inside casing 1, steam enters into the outer second intermediate layer 17 of thickened oil heating pipe 16 earlier, later enter into the outer first intermediate layer 15 of casing 1 through communicating pipe 20, steam at first carries out primary heating to thickened oil and associated gas in the thickened oil heating pipe 16, make in the inflow casing 1 that thickened oil and associated gas can be smooth, the steam in the first intermediate layer 15 mainly plays the heat preservation effect, steam after the circulation is discharged from steam outlet 19, dual heating insulation construction is favorable to improving the mobility of thickened oil and associated gas, ensure the degree of accuracy that detects.
The specific detection mode is as follows:
the gas can be measured directly by means of the gas flow meter 4.
The liquid amounts were calculated as follows:
a. firstly, measuring a differential pressure value between a high-pressure end 82 and a low-pressure end 81 through a differential pressure sensor 8;
b. the value of the differential pressure sensor 8 gradually reaches the highest point delta PmaxThe liquid startsDischarging, along with the discharge of liquid, the numerical value can be rapidly reduced to zero, the signal numerical value change corresponds to one-time liquid discharge to achieve the purpose of liquid discharge counting, the time delta t required by each-time liquid discharge is recorded, the liquid discharged each time is discharged in a constant volume V mode, and the total volume flow Q of liquid discharge can be calculatedv；
c. Calculating the liquid mixed density by a differential pressure type density calculation formula, wherein the specific formula is delta Pmax＝β＊g＊H(ΔPmaxThe maximum differential pressure is β, the liquid mixing density is β, the gravity acceleration is g, and the design liquid discharge height is H), when the liquid mixing density is β, the water content gamma is calculated, and then the total liquid mass Q can be calculated by combining the total volume flow of liquid dischargemAnd mass flow rate of oil and water, QOilAnd QWater (W)。
Example two:
a wellhead thick oil differential pressure constant volume weighing metering device is shown in figures 1 and 5, and is characterized in that a control device is different from the first embodiment in that the control device comprises a floater 12 and a sealing sleeve 14, the floater 12 can float up and down along with the height of liquid level in a liquid area 103, the sealing sleeve 14 is used for sealing a gas path outlet 3, a connecting rod 13 is arranged between the floater 12 and the sealing sleeve 14 and is in hard connection with the sealing sleeve, and a siphon 9 is connected to a liquid path outlet 6. When the internal pressure of the shell 1 does not reach the discharge pressure of the siphon 9, liquid is continuously deposited, the floater 12 is gradually far away from the liquid path outlet 6 and drives the sealing sleeve 14 to move towards the gas path outlet 3 through the connecting rod 13 until the sealing sleeve 14 seals the gas path outlet 3, liquid discharge is started when the floater 12 reaches a specific height, the gas path outlet 3 is just sealed while liquid discharge is carried out, and the purpose of sealing the gas path outlet 3 is to accelerate the liquid discharge speed; the liquid is discharged quickly without residue through the siphon 9, so that constant volume discharge and separation of the liquid are realized, and the aim of gas-liquid separation and metering is achieved.
The specific detection and measurement method is consistent with the first embodiment, and will not be described herein.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A wellhead thick oil differential pressure constant volume weighing and metering device comprises a shell (1), wherein a multiphase flow inlet (5) for introducing thick oil and associated gas, a gas path outlet (3) for outputting natural gas and a liquid path outlet (6) for outputting thick oil are arranged on the shell (1), the wellhead thick oil constant volume weighing and metering device is characterized in that a high-temperature heating device and a vertical cyclone separation column (2) are arranged in the shell (1), an internal cavity of the shell (1) is separated by the cyclone separation column (2) to form a gas area (101), a mixing area (102) and a liquid area (103) from top to bottom, the multiphase flow inlet (5) and the cyclone separation column (2) are positioned in the mixing area (102), the gas path outlet (3) is positioned at the top of the gas area (101), and a gas flow meter (4) for metering and outputting gas is arranged at the end of the gas path outlet (3), and a differential pressure sensor (8) is connected between the gas area (101) and the liquid area (103) through a pipeline, and a control device which is used for controlling the opening and closing of the liquid path outlet (6) and can realize constant volume output of thick oil is arranged at the liquid path outlet.
2. A wellhead viscous crude differential pressure constant volume weighing and metering device according to claim 1, characterized in that the control device comprises a delay flushing valve (10) positioned in the liquid path outlet (6), the delay flushing valve (10) is in sealing fit with the liquid path outlet (6), the control device further comprises a float (12) capable of floating up and down along with the liquid level height in the liquid region (103), and a connecting member for driving the delay flushing valve (10) to be switched on and off is arranged between the float (12) and the delay flushing valve (10).
3. A wellhead viscous oil differential pressure constant volume weighing and metering device according to claim 1, characterized in that the control device comprises a float (12) capable of floating up and down along with the liquid level in the liquid region (103), and a sealing sleeve (14) for sealing the gas path outlet (3), a connecting rod (13) is arranged between the float (12) and the sealing sleeve (14) and is in hard connection with the sealing sleeve (14), and the liquid path outlet (6) is connected with a siphon (9).
4. A wellhead thick oil differential pressure constant volume weighing and metering device according to claim 2 or 3, characterized in that the casing (1) is of a hollow cylindrical structure, and the multiphase inflow port (5) is connected in along the tangential direction of the inner wall of the casing (1).
5. The wellhead thickened oil differential pressure constant volume weighing and metering device is characterized in that a mist catching filter screen (7) is further arranged inside the shell (1), and the mist catching filter screen (7) is arranged at an air passage outlet.
6. A wellhead thick oil differential pressure constant volume weighing and metering device as claimed in claim 1, 2 or 3, characterized in that a first interlayer (15) is arranged inside the housing (1), and the high temperature heating device comprises a steam inlet (18) communicated with the first interlayer (15).
7. The wellhead thickened oil differential pressure constant volume weighing and metering device is characterized in that the shell (1) is communicated with a thickened oil heating pipe (16), a second interlayer (17) is arranged in the thickened oil heating pipe (16), the steam inlet (18) is communicated with the second interlayer (17), the second interlayer (17) is communicated with the first interlayer (15) through a communicating pipe (20), and the first interlayer (15) is provided with a steam outlet (19).
8. The wellhead viscous crude differential pressure constant volume weighing and metering device according to claim 1, characterized in that the gas path outlet (3) is a low pressure end (81), the liquid path outlet (6) is a high pressure end (82), and the differential pressure sensor (8) is respectively connected with the low pressure end (81) and the high pressure end (82) through pipelines.
9. A wellhead viscous oil differential pressure constant volume weighing and metering device according to claim 1 or 2, characterized in that the liquid path outlet (6) is connected with a siphon (9).
10. A wellhead viscous crude differential pressure constant volume weighing and metering device according to claim 1, characterized in that the housings (1) are provided with a plurality of groups, the adjacent housings (1) are communicated with each other, and the gas path outlet (3) and the liquid path outlet (6) are positioned on any housing (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921374871.4U CN210768733U (en) | 2019-08-22 | 2019-08-22 | Well head viscous crude differential pressure constant volume weighing metering device |
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| CN201921374871.4U CN210768733U (en) | 2019-08-22 | 2019-08-22 | Well head viscous crude differential pressure constant volume weighing metering device |
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Effective date of registration: 20201113 Address after: 610000 no.1001-1002, unit 1, building 4, Tianfu Vanke Yuncheng, No.818, south section of Hupan Road, Xinglong Street, Tianfu New District, Sichuan Province Patentee after: Chengdu Yangpai Technology Co.,Ltd. Address before: 214000 No.8, Yingchun Road, Luoshe supporting area, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee before: Wuxi Sea Pioneers Technologies Co.,Ltd. |
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