CN110578510B - Three-phase separator system for gas well drainage process and use method - Google Patents
Three-phase separator system for gas well drainage process and use method Download PDFInfo
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- CN110578510B CN110578510B CN201910856285.1A CN201910856285A CN110578510B CN 110578510 B CN110578510 B CN 110578510B CN 201910856285 A CN201910856285 A CN 201910856285A CN 110578510 B CN110578510 B CN 110578510B
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 305
- 230000001105 regulatory effect Effects 0.000 claims abstract description 104
- 238000000926 separation method Methods 0.000 claims abstract description 33
- 239000013049 sediment Substances 0.000 claims description 37
- 239000010865 sewage Substances 0.000 claims description 31
- 238000007599 discharging Methods 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005191 phase separation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
Abstract
The invention relates to the technical field of gas-liquid separation, in particular to a three-phase separator system used in a gas well liquid discharge process and a use method, which are different from the existing control method in that: 1. the liquid level is controlled not to run at a certain height in the separator, but to run between the liquid outlet and the gas outlet; 2. the gas outlet and the liquid outlet are controlled by pneumatic pressure regulating valves with the same type and the same parameters, so that the regulating pressures of the two outlets can be equal, and the working pressure of the separator is ensured to be stable; 3. the air pressure regulating valves of the two air and liquid outlets are controlled by one pressure regulating valve, so that the control air pressure of the two air pressure regulating valves is equal, and the pressure is equal, namely the pressure in the separator tank is stable, and the good separation is ensured; 4. when the air outlet contains liquid drops, the air-liquid separation can be realized by only adjusting the control air pressure of the pressure regulating valve; if the liquid outlet amount and the gas outlet amount are small, the control air pressure of the pressure regulating valve is reduced to reduce the back pressure on the wellhead, and the normal liquid discharge of the gas well can be realized.
Description
Technical Field
The invention relates to the technical field of gas-liquid separation, in particular to a three-phase separator system used in a gas well liquid discharge process and a use method thereof.
Background
The three-phase horizontal separator separates oil, gas and water by using the principle of gravity separation. The upper part of the inner cavity of the separator is provided with an air chamber, and the outlet of the air is arranged at the upper part; the weir plate divides the lower part of the container into an oil chamber and a water chamber, the fluid entering the separator firstly reaches the upper part of the water chamber, under the action of gravity, the lowest part is water, the upper part of the water is oil, and the space above the oil is natural gas. The height of the weir plate is set at 1/2 of the height of the container when leaving the factory, so that in the working process, the liquid level of water is ensured to be lower than the height of the weir plate, the highest liquid level of oil is 3/4 of the liquid level meter, and the oil on the water can overflow the weir plate to enter the oil chamber, which is the working principle of the oil-gas-water three-phase separator.
When the three-phase separator is applied on site, relatively strict technical requirements are imposed on the fluid:
1. the fluid flow should be controlled to remain relatively stable and the fluctuation range should not be too large.
2. The gas-liquid ratio in the fluid should be relatively stable and not vary too much.
3. The oil-water ratio should be relatively stable and not be negligibly small.
4. The liquid level is controlled at a certain height and the operating pressure is controlled to remain substantially stable.
The three-phase separator is mainly applied to a testing well test process of a gas well and a centralized treatment process of crude oil. In gas well testing, liquids contained in gas streamsThe volume of the separator is small and the volume of the separator is small, about 4m 3 The method comprises the steps of carrying out a first treatment on the surface of the The working pressure is high, about 5-10MPa. When used in a centralized processing station, the gas is contained in a small amount in the liquid stream, the volume of the separator is about 85m3, the working pressure is low, and the pressure is 0.2-0.6MPa. The two processes applicable to the three-phase separator are both to adopt a mode of controlling the liquid level height in the separator, namely, when the liquid level reaches the height of a weir plate in the separator, the opening degree of a liquid outlet valve is increased, otherwise, the opening degree of the liquid outlet valve is closed, the liquid level is ensured to fluctuate up and down within the range of 185mm, and the working pressure change of the separator is ensured to be small, so that the separator has good separation effect. When the application conditions and the control technology are not met or the technical requirements are not met, the application of the three-phase separator is limited, or the separation effect is poor, namely, the water content in oil is high, or the oil content in water is high; even causing gas in the liquid and liquid in the gas.
The existing three-phase separator is a control method for controlling the liquid level to be stable at a certain height under a certain separation pressure, and is a fundamental cause of unstable working pressure, poor gas-liquid separation and difficulty in being used for a gas well liquid discharge process.
When the gas-liquid ratio in the well is changed, the liquid level in the separator is changed, the liquid level is not limited to be at a certain height, but is automatically changed by the liquid level, when the liquid level is close to the gas outlet or the liquid outlet, the float valve is used for completing the functions that the gas outlet cannot be discharged and the liquid outlet cannot be discharged, so that the gas-liquid separation is realized.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides a three-phase separator system for a gas well liquid discharge process and a use method thereof, and particularly solves the problems of difficult gas-liquid separation and poor separation quality in the oil-gas industry and the recovery problem of natural gas and fracturing fluid in the liquid discharge after gas well pressure.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
a three-phase separator system for use in gas well drainage processes comprises
The three-phase separator comprises a three-phase separator shell, wherein a separated sediment area and a separated liquid area are arranged at the inner bottom of the three-phase separator shell, a separated gas area is arranged at the inner top of the three-phase separator shell, a sewage outlet is arranged in the sediment area, a liquid outlet is arranged in the liquid area, and an exhaust port is arranged in the gas area;
The gas-liquid inlet pipeline is connected to the three-phase separator shell and is also connected with a gas-liquid inlet control valve;
the sewage draining pipeline is communicated with a sewage draining outlet of the sediment area separated in the three-phase separator shell;
the liquid discharge pipeline is communicated with a liquid discharge port of a liquid area separated in the three-phase separator shell, and is connected with a second pneumatic regulating valve;
the exhaust pipeline is communicated with an exhaust port of a gas zone separated from the top in the three-phase separator shell, and the exhaust pipeline is connected with a first pneumatic regulating valve;
the gas storage device is respectively communicated with the first pneumatic adjusting valve and the second pneumatic adjusting valve through pipelines, and a pressure regulating valve for regulating the air pressure at the first pneumatic adjusting valve and the second pneumatic adjusting valve is connected to the pipelines communicated with the first pneumatic adjusting valve and the second pneumatic adjusting valve, so that the control air pressure at the first pneumatic adjusting valve and the second pneumatic adjusting valve is kept equal;
a float valve for controlling the opening and closing of the liquid outlet and the air outlet is arranged between the liquid outlet and the air outlet in the three-phase separator shell.
The exhaust port is provided with an exhaust valve, the liquid discharge port is provided with a liquid discharge valve, one end of the float valve is connected with the exhaust valve, the other end of the float valve is connected with the liquid discharge valve, and the two valves of the first pneumatic regulating valve and the second pneumatic regulating valve are of the same type, of the same structure and of the same working mode.
The float valve comprises a spherical float, an upper float connecting rod, a lower float connecting rod and a balance valve, one end of the spherical float is connected with the exhaust valve through the upper float connecting rod, the other end of the spherical float is connected with the drain valve through the lower float connecting rod, and the balance valve is connected with one ends of the upper float connecting rod and the lower float connecting rod, which are connected with the exhaust valve and the drain valve.
The exhaust valve and the drain valve both comprise a valve seat, a valve shell, a valve head and a balance valve displacement baffle, wherein the valve seat is connected with the inner wall of a three-phase separator shell around an exhaust port, one end of the valve shell is connected with the valve seat, the other end of the valve shell is connected with the valve displacement baffle, the valve head is positioned in the valve shell and can move up and down, the valve head is of a semicircular spherical structure, the valve head of the semicircular spherical structure is of a hollow structure, the bottom of the valve head is connected with the balance valve displacement baffle, the balance valve penetrates through the balance valve displacement baffle through an upper float connecting rod and is positioned in the valve head, the balance valve and the connected upper float connecting rod can move up and down in the valve head, the diameter of the valve head of the semicircular spherical structure is smaller than the inner diameter of the valve shell, and the outer side wall of the valve head is contacted with the inner wall of the valve shell.
The valve is characterized in that a first through hole is formed in the side wall of one end of the valve housing connected with the valve displacement baffle, a second through hole is formed in the balance valve displacement baffle, and a third through hole is formed in the top of the valve head.
The top of three-phase separator casing still be provided with the relief valve, be provided with in the three-phase separator casing and hide the flow board, the outlet direction of the second pneumatic control valve that connects on the fluid-discharge line still is connected with the second ball valve, the outlet direction of the first pneumatic control valve that connects on the blast pipe is connected with first ball valve, the bottom in the three-phase separator casing is silt, the middle part in the three-phase separator casing is the separation liquid, the top in the three-phase separator casing is the separation gas, be provided with silt baffle on the three-phase separator casing inner wall that the fluid-discharge port is located gas-liquid and gets into pipeline entry direction.
The blow-down pipeline comprises a first blow-down pipeline and a second blow-down pipeline, the first blow-down pipeline is connected with a first blow-down valve, the second blow-down pipeline is connected with a second blow-down valve, and the gas storage device is a gas storage bottle.
The buoyancy of the spherical floater is equal to 2 times of self gravity, air chamber diaphragms and valve cores are arranged in the first pneumatic adjusting valve and the second pneumatic adjusting valve, and the areas of the air chamber diaphragms in the first pneumatic adjusting valve and the second pneumatic adjusting valve are 10 times of the cross sections of the valve cores.
The use method of the three-phase separator system used in the gas well drainage process comprises the following steps of:
Step one: firstly, closing a gas-liquid inlet control valve, a first blow-down valve and a second blow-down valve of a first blow-down pipeline and a second blow-down pipeline on a gas-liquid inlet pipeline of a three-phase separator, then communicating the gas-liquid inlet pipeline with a fluid drain pipeline to be separated, and opening a second ball valve on the drain pipeline and a first ball valve on an exhaust pipeline;
step two: on the basis of the first step, the first pneumatic regulating valve and the second pneumatic regulating valve are normally open type pneumatic regulating valves, the pressure regulating valve connected on the pipeline of the gas storage device communicated with the first pneumatic regulating valve and the second pneumatic regulating valve is manually regulated, so that the gas pressure at the first pneumatic regulating valve and the second pneumatic regulating valve is kept equal, the gas control pressure output by the gas storage device is 0.01-0.05MPa, at the moment, the first pneumatic regulating valve on the exhaust pipeline and the second pneumatic regulating valve on the liquid discharge pipeline are closed, and the gas pressure is 1/10 of the tank pressure in the three-phase separator is regulated and controlled by the performance parameters of the first pneumatic regulating valve and the second pneumatic regulating valve, namely, the working pressure of the three-phase separator is regulated to 0.1-0.5MPa;
step three: on the basis of the second step, the fluid to be detected enters the three-phase separator through the liquid discharge pipeline and then enters the gas-liquid inlet pipeline, and meanwhile, the gas-liquid inlet control valve is slowly regulated to gradually increase the fluid inlet amount, then the working pressure of the three-phase separator is observed to be 0.1-0.5MPa, and meanwhile, the liquid level in the three-phase separator appears, so that the separation state is good;
Step four: on the basis of the third step, continuously regulating the atmosphere to enter a control valve, so that the flow of a liquid outlet reaches about 600L/min, the requirement of liquid discharge flow is met, when the liquid level approaches to the position of an exhaust port, liquid rotation is easy to occur, at the moment, a spherical float closes an exhaust valve under the combined action of buoyancy and liquid rotation, namely an upper float connecting rod connected with the spherical float and a balance valve connected with the spherical float drive a valve head to move upwards in a valve shell to block a third through hole at the top of the valve head, so that the exhaust port is closed, a liquid discharge valve at the liquid discharge port is opened, and separated liquid enters the liquid discharge valve shell through the third through hole on the side wall of the liquid discharge valve shell and then enters a liquid discharge pipeline through the liquid discharge port;
when the first liquid level and the second liquid level are at the middle position in the three-phase separator, the spherical floater is at the middle position, the exhaust valve and the liquid discharge valve are simultaneously opened, and the air outlet and the liquid outlet are simultaneously and respectively discharged under the control of the first pneumatic regulating valve and the second pneumatic regulating valve;
when the second liquid level is at the bottom of the three-phase separator, the spherical floater is also at the bottom of the separator, if the liquid outlet is cyclone, the spherical floater plugs the liquid outlet under the action of the cyclone and gravity, namely the liquid outlet valve is closed, and at the moment, the air outlet is opened, namely the air outlet valve is opened;
When the rotational flow in the three-phase separator is lost, the float valve continuously controls the opening and closing of the air outlet and the liquid outlet under the action of the buoyancy force so as to prevent the liquid outlet from discharging air and the air outlet from discharging liquid;
step five: on the basis of the fourth step, when the exhaust port is opened, the separated gas enters the gas recovery device for treatment through the first pneumatic adjusting valve and the first ball valve on the exhaust pipe, and when the liquid discharge port is opened, the separated liquid enters the liquid recovery device for treatment through the second pneumatic adjusting valve and the second ball valve on the liquid discharge pipe, and sediment at the bottom of the three-phase separator shell is discharged through the sewage discharge pipe;
step six: on the basis of the fifth step, checking whether sand particles and sediment are discharged at any time at a liquid outlet, and if the sand particles and sediment are discharged, discharging the sewage through two pipelines of a first sewage discharging pipeline and a second sewage discharging pipeline simultaneously to prevent the sediment in the three-phase separator from exceeding a sediment baffle plate to enter a liquid area for discharge and erosion damage to an air pressure regulating valve; when the liquid outlet is discharged by sand, grains and sediment, the first blow-down valve and the second blow-down valve are opened for blow-down, and when the liquid outlet is not discharged by sand, grains and sediment, the first blow-down valve and the second blow-down valve are closed.
The beneficial effects of the invention are as follows:
compared with the prior art, when the liquid level is close to the position of the exhaust port, liquid rotation is easy to occur, and at the moment, the float valve closes the exhaust under the combined action of buoyancy and liquid rotation, and the liquid discharge port is opened; when the liquid level is at the middle position, the float valve is at the middle position, the two outlets are opened simultaneously, and the two outlets respectively give out air and liquid under the control of the pneumatic pressure regulating valve; when the liquid level is at the bottom of the separator, the float valve is also at the bottom of the separator, if the liquid outlet is in cyclone, the float valve plugs the liquid outlet under the action of cyclone and gravity, and the air outlet is opened; when the rotational flow passes, the float valve continuously plays a role in opening and closing the two outlets under the action of the buoyancy to prevent the liquid outlet from discharging gas and the gas outlet from discharging liquid, so that the three-phase separator is guaranteed to have good separation quality, and the problems of difficult gas-liquid separation and poor separation quality in the oil-gas industry are solved.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram showing the overall structure of the exhaust valve, the drain valve and the float valve of the present invention.
Fig. 3 is a schematic diagram of the exhaust structure of the exhaust valve according to the present invention.
In the figure: 1-gas-liquid inlet control valve, 2-relief valve, 3-shielding plate, 4-three phase separator housing, 5-separation gas, 6-first liquid level, 7-first pneumatic adjustment valve, 8-first ball valve, 9-vent valve, 10-second liquid level, 11-spherical float, 12-separation liquid, 13-drain valve, 14-second pneumatic adjustment valve, 15-second ball valve, 16-pressure regulating valve, 17-gas cylinder, 18-first blowdown valve, 19-silt, 20-second blowdown valve, 901-valve seat, 902-valve housing, 903-valve position baffle, 904-valve head, 905-balance valve, 906-balance valve position baffle, 907-upper float link.
Detailed Description
Example 1:
referring to FIG. 1, a schematic diagram of a three-phase separator system for use in a gas well drainage process according to embodiment 1 of the present invention comprises
The three-phase separator comprises a three-phase separator shell 4, wherein a separated sediment area and a separated liquid area are arranged at the inner bottom of the three-phase separator shell 4, a separated gas area is arranged at the inner top of the three-phase separator shell 4, a sewage outlet is arranged in the sediment area, a liquid outlet is arranged in the liquid area, and an exhaust port is arranged in the gas area;
the gas-liquid inlet pipeline is connected to the three-phase separator shell 4 and is also connected with a gas-liquid inlet control valve 1;
The sewage draining pipeline is communicated with a sewage draining outlet of the sediment area separated in the three-phase separator shell 4;
the liquid discharge pipeline is communicated with a liquid discharge port of a liquid area separated in the three-phase separator shell 4 and is connected with a second pneumatic regulating valve 14;
the exhaust pipeline is communicated with an exhaust port of a gas zone separated from the top in the three-phase separator shell 4, and the exhaust pipeline is connected with a first pneumatic regulating valve 7;
the gas storage device is respectively communicated with the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14 through pipelines, and a pressure regulating valve 16 for regulating the air pressure at the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14 is connected to the pipelines communicated with the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14, so that the control air pressure at the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14 is kept equal;
a float valve for controlling the opening and closing of the liquid outlet and the air outlet is arranged between the liquid outlet and the air outlet in the three-phase separator shell 4.
When in actual use, the method comprises the following steps: the gas-liquid mixture to be separated enters the three-phase separation through a gas-liquid inlet pipeline, the gas-liquid inlet pipeline controls the opening and the closing and the flow through a control valve 1, a sewage pipeline is used for discharging sediment impurities separated in the three-phase separation, a liquid discharge pipeline is used for discharging liquid separated in the three-phase separation, a second pneumatic control valve 14 is connected to the liquid discharge pipeline and used for adjusting and controlling the working pressure at a liquid discharge port, the gas discharge pipeline is used for discharging gas separated in the three-phase separation, a first pneumatic control valve 7 is connected to the gas discharge pipeline and used for adjusting and controlling the working pressure at a gas discharge port, a gas storage device is used for supplying gas to the first pneumatic control valve 7 and the second pneumatic control valve 14, a pressure regulating valve 16 is connected to the pipeline, communicated with the first pneumatic control valve 7 and the second pneumatic control valve 14, and is used for regulating the pressure of the first pneumatic control valve 7 and the second pneumatic control valve 14 so as to regulate the working pressure of the gas discharge port and the liquid discharge port, the working pressure of the exhaust port and the exhaust port is equal, wherein the two valves of the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 are of the same type, the same structure and the same working mode, a float valve for controlling the opening and the closing of the exhaust port and the exhaust port is arranged between the exhaust port and the exhaust port in the three-phase separator shell 4, the float valve is used for realizing that the exhaust port gas can not go out of the liquid and the exhaust port can not go out of the gas by adopting the float valve in the three-phase separator when the fluid entering the three-phase separator is pure gas or pure liquid respectively, controlling the action of the opening and the closing of the exhaust port and the exhaust port, the three-phase separator with the structure is used for separating, and the size of the air storage device for supplying air to the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 is regulated by adopting the regulating pressure regulating valve 16, the working pressure of the first pneumatic regulating valve 7 and the working pressure of the second pneumatic regulating valve 14 are regulated, so that the working pressure of the exhaust port and the working pressure of the liquid outlet are regulated, the working pressure of the exhaust port and the working pressure of the liquid outlet are equal, meanwhile, the float valve is adopted to realize that the gas of the exhaust port cannot go out of the liquid, the liquid outlet cannot go out of the liquid, the action of the exhaust port and the liquid outlet switch is controlled, the three-phase separator can be normally separated, the exhaust port cannot go out of the liquid, the liquid outlet cannot go out of the liquid, the problems of difficult gas-liquid separation and poor separation quality in the oil-gas industry are solved, and the recovery problem of natural gas and fracturing fluid in the liquid discharge after gas well pressure can be solved.
Example 2:
referring to fig. 1, 2 and 3, this embodiment is different from embodiment 1 in that: the exhaust port is provided with an exhaust valve 9, the liquid discharge port is provided with a liquid discharge valve 13, one end of the float valve 11 is connected with the exhaust valve 9, the other end of the float valve is connected with the liquid discharge valve 13, and the two valves of the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 are of the same type, of the same structure and of the same working mode.
Preferably, the float valve comprises a spherical float 11, an upper float connecting rod 907, a lower float connecting rod 1301 and a balance valve 905, one end of the spherical float 11 is connected with the exhaust valve 9 through the upper float connecting rod 907, the other end of the spherical float 11 is connected with the drain valve 13 through the lower float connecting rod 1301, and the balance valve 905 is connected with one ends of the upper float connecting rod 907 and the lower float connecting rod 1301, which are connected with the exhaust valve 9 and the drain valve 13.
When in actual use, the method comprises the following steps: the two valves of the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 are of the same type, the same structure and the same working mode, after the pneumatic regulating valves are regulated, the working pressure of the exhaust buckle and the working pressure of the liquid discharge port are equal, after the float valve is connected with the exhaust valve 9 of the exhaust port and the liquid discharge valve 13 of the liquid discharge port, the opening and the closing of the exhaust port and the liquid discharge port are controlled through the whole structure, wherein the whole structure can automatically control the opening and the closing of the exhaust port through the buoyancy of liquid quantity and the pressure of gas quantity in the three-phase separator, when the buoyancy of liquid to the spherical floater 11 is greater than the pressure of separated gas to the spherical floater 11, the exhaust valve 9 is closed, the liquid discharge valve 13 is opened, the upper floater connecting rod 907 on the spherical floater 11 drives the balance valve 905 in the exhaust valve 9 to ascend to close the exhaust port, the lower floater connecting rod 1301 on the spherical floater 11 drives the balance valve 905 in the liquid discharge valve 13 to ascend to open the liquid discharge port to perform liquid discharge, when the buoyancy and the pressure of the separated gas and liquid to the spherical floater 11 are equal, the gas exhaust port and the liquid discharge port are simultaneously opened for exhausting and discharging, when the pressure of the gas to the spherical floater 11 is larger than the buoyancy of the separated liquid to the spherical floater 11, the gas exhaust valve 9 is opened, the liquid discharge valve 13 is closed, the upper floater connecting rod 907 on the spherical floater 11 drives the balance valve 905 in the gas exhaust valve 9 to descend to open the gas exhaust port for exhausting, the lower floater connecting rod 1301 on the spherical floater 11 drives the balance valve 905 in the liquid discharge valve 13 to descend to close the liquid discharge port, the balance valve with small aperture of the balance valve 905 is the balance valve with small aperture, namely the principle that the buoyancy or the gravity of the spherical floater 11 acts on the balance valve 905, the liquid or the gas in the separator enters the space between the liquid discharge valve or the gas exhaust valve and the gas pressure regulating valve to eliminate the pressure difference between the liquid discharge valve and the gas pressure regulating valve, the balance valve 905 can be smoothly opened by the liquid discharge valve or the exhaust valve, the closing of the exhaust port and the liquid discharge port is controlled by the structure, the good separation quality is ensured, and the problems of difficult gas-liquid separation and poor separation quality in the oil-gas industry are solved; the working pressure of the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 is more than or equal to 6MPa, the pressure regulating ratio is more than or equal to 10, the pneumatic control pressure is 0-0.6MPa, the drift diameter is more than or equal to 50mm, the structure is normally open, and the valve seat and the valve core are as follows: the anti-erosion treatment is a well-known technology in the industry, namely belongs to the prior art, and has good sealing performance; the regulating output pressure of the pressure regulating valve 16 is 0-0.6MPa, the outlet of the pressure regulating valve 16 is connected with two pipelines in parallel, the second pneumatic regulating valve 14 and the first pneumatic regulating valve 7 are respectively connected with the liquid outlet and the air outlet, the inlet of the pressure regulating valve 16 is connected with the air storage device through the pipelines, the air source input pressure of the air storage device for the pressure regulating valve 16 is 0.6-0.8MPa, and the air supply pressure of the air storage device is 0.6-0.8MPa; the external pressure born by the spherical floater 11 is more than or equal to 5MPa, the weight=1/2 buoyancy is more than or equal to 40Kg; the diameter of the outlet of the valve seat 901 of the whole float valve is more than or equal to 50mm, and the stroke is more than or equal to 0.8m; the diameter of the outlet of the balance valve 905 is less than or equal to 8mm, and the stroke is 5-8mm; the three-phase separator can be normally separated by using the components with the specifications, and the exhaust port and the liquid discharge port can be controlled to normally exhaust and discharge liquid, so that the phenomena of exhaust of the liquid discharge port and liquid discharge of the exhaust port can be avoided.
Example 3:
compared with embodiment 2, this embodiment is different in that: the exhaust valve 9 and the drain valve 13 both comprise a valve seat 901, a valve housing 902, a valve displacement baffle 903, a valve head 904 and a balance valve displacement baffle 906, wherein the valve seat 901 is connected with the inner wall of a three-phase separator shell 4 around an exhaust port, one end of the valve housing 902 is connected with the valve seat 901, the other end of the valve housing 902 is connected with the valve displacement baffle 903, the valve head 904 is positioned in the valve housing 902 and can move up and down, the valve head 904 is of a semicircular spherical structure, the valve head 904 of the semicircular spherical structure is of a hollow structure, the bottom is connected with the balance valve displacement baffle 906, the balance valve 905 and the connected upper float connecting rod 907 penetrate through the balance valve displacement baffle 906 and are positioned in the valve head 904, the diameter of the balance valve 905 and the connected upper float connecting rod 907 can move up and down in the valve head 904, the diameter of the semicircular spherical structure is smaller than the inner diameter of the valve housing 902, and the outer side wall of the valve head 904 is contacted with the inner wall of the valve housing 902.
Preferably, it is: the valve housing 902 has a first through hole formed in a side wall of one end thereof connected to the valve displacement baffle 903, a second through hole formed in the balance valve displacement baffle 906, and a third through hole formed in the top of the valve head 904.
When in actual use, the method comprises the following steps: the valve seat 901 is connected with the inner wall of the three-phase separator housing 4 around the exhaust port, one end of the valve housing 902 is connected with the valve seat 901, the other end of the valve housing 902 is connected with the valve displacement baffle 903, the valve displacement baffle 903 is used for blocking the valve head 904 when the valve head 904 moves downwards, the valve head 904 is positioned in the valve housing 902 and can move upwards and downwards, the valve head 904 is in a semicircular spherical structure, the valve head 904 in a semicircular spherical structure is in a hollow structure, the bottom part of the valve head 904 is connected with the balance valve displacement baffle 906 and is used for blocking the balance valve 905 when the balance valve 905 moves downwards, the balance valve 905 is positioned in the valve head 904 through the balance valve displacement baffle 906 by an upper float connecting rod 907, the balance valve 905 and the connected upper float connecting rod 907 can move upwards and downwards in the valve head 904, the diameter of the semicircular spherical structure of the valve head 904 is smaller than the inner diameter of the valve housing 902, and the outer side wall of the valve head 904 contacts with the inner wall of the valve housing 902 to ensure that the valve head 904 can control the opening and closing of the air outlet or the liquid outlet, meanwhile, the outer side wall of the valve head 904 contacts with the inner wall of the valve housing 902 to ensure the tightness of the air outlet or the liquid outlet, a first through hole is formed in the side wall of one end of the valve housing 902 connected with the valve displacement baffle 903, when the air outlet or the liquid outlet is opened, air or liquid enters the valve housing 902 from the first through hole, a second through hole is formed in the balance valve displacement baffle 906, the air or the liquid entering the valve housing 902 enters the valve head 904 through the second through hole, a third through hole is formed in the top of the valve head 904, and the air or the liquid entering the valve head 904 enters the air exhaust pipeline or the liquid outlet through the third through hole.
Example 4:
compared with embodiment 1, this embodiment is different in that: the top of three-phase separator casing 4 still be provided with relief valve 2, be provided with in the three-phase separator casing 4 and hide flow board 3, the export direction of the second pneumatic control valve 14 that connects on the fluid-discharge line still is connected with second ball valve 15, the export direction of the first pneumatic control valve 7 that connects on the blast pipe is connected with first ball valve 8, the bottom in the three-phase separator casing 4 is silt 19, the middle part in the three-phase separator casing 4 is separation liquid 12, the top in the three-phase separator casing 4 is separation gas 5, be provided with silt baffle on the three-phase separator casing 4 inner wall that the fluid-discharge outlet is located gas-liquid inlet line entry direction.
When in actual use, the method comprises the following steps: the top of three-phase separator casing 4 still is provided with relief valve 2, relief valve 2 is used for the three-phase separator to meet special circumstances and is opened the effect of arranging the pressure, guarantee the safety of three-phase separator, be provided with in the three-phase separator casing 4 and hide the flow board 3, hide the effect of flow board 3 and be when waiting to separate the gas-liquid mixture and get into the inside float valve of punching out when three-phase separator flow is big, reduce the flow impulsive force of gas-liquid mixture, the outlet direction of the second pneumatic control valve 14 that connects on the fluid-discharge line still is connected with second ball valve 15 and is used for controlling the fluid-discharge line, the outlet direction of the first pneumatic control valve 7 that connects on the blast pipe is connected with first ball valve 8 and is used for controlling the exhaust line, be provided with the silt baffle on the three-phase separator casing 4 inner wall that the fluid-discharge port is located gas-liquid entering pipeline inlet direction and be used for sheltering from the impurity silt that separates, avoid blocking up the fluid-discharge port, prevent silt erosion damage second pneumatic control valve 14.
Example 5:
compared with embodiment 1, this embodiment is different in that: the blow-down pipeline comprises a first blow-down pipeline and a second blow-down pipeline, the first blow-down pipeline is connected with a first blow-down valve 18, the second blow-down pipeline is connected with a second blow-down valve 20, and the gas storage device is a gas storage bottle 17.
When in actual use, the method comprises the following steps: when the separated impurity sediment exceeds the sediment baffle and the worker observes that the liquid outlet has a small amount of sediment to come out, the first sewage drain pipeline and the second sewage drain pipeline are simultaneously opened for simultaneous discharging and collecting, the first sewage drain pipeline is connected with a first sewage drain valve 18 for controlling the opening and closing of the first sewage drain pipeline, the second sewage drain pipeline is connected with a second sewage drain valve 20 for controlling the opening and closing of the second sewage drain pipeline, and the gas storage device is a gas storage bottle 17 for providing a gas source for the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14.
Example 6:
compared with embodiment 2, this embodiment is different in that: the buoyancy of the spherical floater 11 is equal to 2 times of self gravity, air chamber diaphragms and valve cores are arranged in the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14, and the areas of the air chamber diaphragms in the first pneumatic adjusting valve 7 and the second pneumatic adjusting valve 14 are 10 times of the cross sections of the valve cores.
When in actual use, the method comprises the following steps: the buoyancy of the spherical float 11 is equal to 2 times of self gravity, the float valve can be ensured to normally operate, the three-phase separator is suitable for the on-off control of the exhaust port and the liquid outlet of the three-phase separator in the invention, the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 are internally provided with air chamber diaphragms and valve cores, the areas of the air chamber diaphragms in the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 are 10 times of the cross sections of the valve cores, and the working pressure of the exhaust port and the liquid outlet can be always kept equal after the air storage device is used for providing an air source for the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14 for the air storage bottle 17.
Example 7:
a method of using a three-phase separator system for use in a gas well drainage process comprising the steps of:
step one: firstly, closing a gas-liquid inlet control valve 1 and a first blow-down valve 18 and a second blow-down valve 20 of a first blow-down pipeline and a second blow-down pipeline on a gas-liquid inlet pipeline of a three-phase separator, then communicating the gas-liquid inlet pipeline with a fluid drain pipeline to be separated, and opening a second ball valve 15 on the drain pipeline and a first ball valve 8 on an exhaust pipeline;
Step two: on the basis of the first step, the first pneumatic control valve 7 and the second pneumatic control valve 14 are normally open type pneumatic control valves, the pressure regulating valve 16 connected on the pipeline for connecting the gas storage device with the first pneumatic control valve 7 and the second pneumatic control valve 14 is manually regulated, so that the gas pressure at the first pneumatic control valve 7 and the second pneumatic control valve 14 is kept equal, the gas control pressure output by the gas storage device is 0.01-0.05MPa, at the moment, the first pneumatic control valve 7 on the exhaust pipeline and the second pneumatic control valve 14 on the drain pipeline are closed, and the performance parameter control gas pressure through the first pneumatic control valve 7 and the second pneumatic control valve 14 is 1/10 of the tank pressure in the three-phase separator, namely, the working pressure of the three-phase separator is regulated to 0.1-0.5MPa;
step three: on the basis of the second step, the fluid to be detected enters the three-phase separator through the liquid discharge pipeline and then enters the gas-liquid inlet pipeline, and meanwhile, the gas-liquid inlet control valve 1 is slowly regulated to gradually increase the inlet amount of the fluid, then the working pressure of the three-phase separator is observed to be 0.1-0.5MPa, and meanwhile, the liquid level in the three-phase separator appears, so that the separation state is good;
step four: on the basis of the third step, continuously regulating the atmosphere to enter the control valve 1, enabling the flow of a liquid outlet to reach about 600L/min, meeting the liquid discharge flow requirement, enabling liquid rotation to easily occur when the liquid level approaches to the position of the exhaust outlet, closing the exhaust valve 9 under the combined action of buoyancy and the liquid rotation of the spherical float 11, namely, driving the valve head 904 to move upwards in the valve housing 902 to block a third through hole at the top of the valve head 904 by an upper float connecting rod 907 connected with the spherical float 11 and a balance valve 905 connected with the spherical float connecting rod, so as to close the exhaust outlet, opening a liquid discharge valve 13 at the liquid outlet, enabling separated liquid 12 to enter the liquid discharge valve housing through the third through hole on the side wall of the liquid discharge valve housing, and then entering a liquid discharge pipeline through the liquid outlet;
When the first liquid level 6 and the second liquid level 10 are at the middle position in the three-phase separator, the spherical floater 11 is at the middle position, the exhaust valve 9 and the liquid discharge valve 13 are simultaneously opened, and the exhaust port and the liquid discharge port are simultaneously and respectively used for discharging air and liquid under the control of the first pneumatic regulating valve 7 and the second pneumatic regulating valve 14;
when the second liquid level 10 is at the bottom of the three-phase separator, the spherical floater 11 is also at the bottom of the separator, if the liquid outlet has cyclone, the spherical floater 11 plugs the liquid outlet under the action of the cyclone and gravity, namely the liquid outlet valve 13 is closed, and at the moment, the air outlet is opened, namely the air outlet valve 9 is opened;
when the rotational flow in the three-phase separator is lost, the float valve continuously controls the opening and closing of the air outlet and the liquid outlet under the action of the buoyancy force so as to prevent the liquid outlet from discharging air and the air outlet from discharging liquid;
step five: on the basis of the fourth step, when the exhaust port is opened, the separated gas 5 enters the gas recovery device for treatment through the first pneumatic adjusting valve 7 and the first ball valve 8 on the exhaust pipe, and when the liquid discharge port is opened, the separated liquid 12 enters the liquid recovery device for treatment through the second pneumatic adjusting valve 14 and the second ball valve 15 on the liquid discharge pipe, and sediment 19 at the bottom of the three-phase separator shell 4 is discharged through the sewage discharge pipe;
Step six: on the basis of the fifth step, checking whether sand particles and sediment are discharged at any time at a liquid outlet, and if the sand particles and sediment are discharged, discharging the sewage through two pipelines of a first sewage discharging pipeline and a second sewage discharging pipeline simultaneously to prevent sediment 19 in the three-phase separator from exceeding a sediment baffle to enter a liquid area for discharge and erosion damage to the air pressure regulating valve 14; when the liquid outlet is discharged by sand, sediment and sand, the first blow-off valve 18 and the second blow-off valve 20 are opened for blow-off, and when the liquid outlet is not discharged by sand, sediment and sand, the first blow-off valve 18 and the second blow-off valve 20 are closed.
When the three-phase separator is used for discharging sewage, the gas-liquid separation flow is closed, and the liquid discharge is stopped; flushing the sediment by adopting a centrifugal pump; the working pressure of the three-phase separator meets the requirements of good gas-liquid separation and liquid discharge flow.
If the discharged gas contains liquid droplets under the condition that the discharged liquid flow rate is satisfied, the separator operating pressure should be appropriately increased by the pressure regulating valve 16 to achieve good separation. If the gas-liquid flow rate can not meet the requirement of the liquid discharge flow rate during the liquid discharge, the working pressure of the separator is regulated down by the pressure regulating valve 16, so that the liquid discharge is ensured to be normal.
The method realizes that the liquid outlet and the air outlet adopt a mechanical throttling control mode to ensure the normal operation of the three-phase separator, and simultaneously designs the float valve in the separator so as to achieve the function of auxiliary control. When the liquid level is close to the position of the exhaust port, liquid rotation is easy to occur, and at the moment, the float valve closes the exhaust under the combined action of buoyancy and liquid rotation, and the liquid outlet is opened; when the liquid level is at the middle position, the float valve is at the middle position, the two outlets are opened simultaneously, and the two outlets respectively give out air and liquid under the control of the pneumatic pressure regulating valve; when the liquid level is at the bottom of the separator, the float valve is also at the bottom of the separator, if the liquid outlet is in cyclone, the float valve plugs the liquid outlet under the action of cyclone and gravity, and the air outlet is opened; when the rotational flow passes, the float valve continues to play a role of opening and closing the two outlets under the action of the buoyancy so as to prevent the liquid outlet from discharging air and the air outlet from discharging liquid. The three-phase separator system and the using method of the structure have been tested and tested indoors, all performances reach the standard, and the three-phase separator has the best separation effect.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the scope of the knowledge of those skilled in the art without departing from the spirit of the present invention, which is within the scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
The technical solutions between the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art that when the combination of technical solutions contradicts or cannot be implemented, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
Claims (8)
1. The application method of the three-phase separator system used in the gas well drainage process is characterized by comprising the following steps: the method comprises the following steps:
step one: firstly, closing a gas-liquid inlet control valve (1) and a first blow-down valve (18) and a second blow-down valve (20) of a first blow-down pipeline and a second blow-down pipeline on a gas-liquid inlet pipeline of a three-phase separator, then communicating the gas-liquid inlet pipeline with a fluid drain pipeline to be separated, and opening a second ball valve (15) on the drain pipeline and a first ball valve (8) on an exhaust pipeline;
Step two: on the basis of the first step, the first pneumatic control valve (7) and the second pneumatic control valve (14) are normally open type pneumatic control valves, the pressure regulating valve (16) connected on the pipeline where the gas storage device is communicated with the first pneumatic control valve (7) and the second pneumatic control valve (14) is manually regulated, so that the gas pressure at the first pneumatic control valve (7) and the second pneumatic control valve (14) is kept equal, the gas control pressure output by the gas storage device is 0.01-0.05MPa, at the moment, the first pneumatic control valve (7) on the exhaust pipeline and the second pneumatic control valve (14) on the drain pipeline are closed, and the performance parameter control gas pressure through the first pneumatic control valve (7) and the second pneumatic control valve (14) is 1/10 of the tank pressure in the three-phase separator, namely, the working pressure of the three-phase separator is regulated to 0.1-0.5MPa;
step three: on the basis of the second step, the fluid to be detected enters the three-phase separator through the liquid discharge pipeline and then enters the pipeline through the gas-liquid inlet pipeline, and meanwhile, the gas-liquid inlet control valve (1) is slowly regulated to gradually increase the inlet amount of the fluid, then the working pressure of the three-phase separator is observed to be 0.1-0.5MPa, and meanwhile, the liquid level in the three-phase separator appears, so that the separation state is good;
Step four: on the basis of the third step, continuously regulating the atmosphere to enter the control valve (1) to enable the flow of the liquid outlet to reach about 600L/min, meeting the liquid discharge flow requirement, when the liquid level approaches to the position of the exhaust outlet, easily generating liquid rotation, closing the exhaust valve (9) under the combined action of buoyancy and liquid rotation of the spherical float (11), namely an upper float connecting rod (907) connected with the spherical float (11) and a balance valve (905) connected with the spherical float connecting rod to drive the valve head (904) to move upwards in the valve housing (902) to block a third through hole at the top of the valve head (904), closing the exhaust outlet, opening a liquid discharge valve (13) at the liquid discharge outlet, enabling separated liquid (12) to enter the liquid discharge valve housing through a third through hole on the side wall of the liquid discharge valve housing, and then entering a liquid discharge pipeline through the liquid discharge outlet;
when the first liquid level (6) and the second liquid level (10) are at the middle position in the three-phase separator, the spherical floater (11) is at the middle position, the exhaust valve (9) and the liquid discharge valve (13) are simultaneously opened, and the exhaust port and the liquid discharge port are simultaneously and respectively discharged under the control of the first pneumatic regulating valve (7) and the second pneumatic regulating valve (14);
when the second liquid level (10) is positioned at the bottom of the three-phase separator, the spherical floater (11) is also positioned at the bottom of the separator, if the liquid outlet is in cyclone, the spherical floater (11) plugs the liquid outlet under the action of the cyclone and gravity, namely the liquid outlet valve (13) is closed, and at the moment, the air outlet is opened, namely the air outlet valve (9) is opened;
When the rotational flow in the three-phase separator is lost, the float valve continuously controls the opening and closing of the air outlet and the liquid outlet under the action of the buoyancy force so as to prevent the liquid outlet from discharging air and the air outlet from discharging liquid;
step five: on the basis of the fourth step, when the exhaust port is opened, the separated gas (5) enters the gas recovery device for treatment through a first pneumatic control valve (7) and a first ball valve (8) on the exhaust pipe, and when the liquid discharge port is opened, the separated liquid (12) enters the liquid recovery device for treatment through a second pneumatic control valve (14) and a second ball valve (15) on the liquid discharge pipe, and sediment (19) at the inner bottom of the three-phase separator shell (4) is discharged through a sewage discharge pipeline;
step six: on the basis of the fifth step, checking whether sand particles and sediment are discharged at any time at a liquid outlet, and if the sand particles and sediment are discharged, discharging the sewage through two pipelines of a first sewage discharging pipeline and a second sewage discharging pipeline simultaneously to prevent sediment (19) in the three-phase separator from exceeding a sediment baffle plate to enter a liquid area for discharge and to erode and damage an air pressure second pneumatic regulating valve (14); when the liquid outlet is discharged by sand and sediment, the first blow-down valve (18) and the second blow-down valve (20) are opened for blow-down, and when the liquid outlet is not discharged by sand and sediment, the first blow-down valve (18) and the second blow-down valve (20) are closed;
Wherein, the three-phase separator system used in the gas well liquid discharge process comprises
The three-phase separator comprises a three-phase separator shell (4), wherein a separated sediment area and a separated liquid area are arranged at the inner bottom of the three-phase separator shell (4), a separated gas area is arranged at the inner top of the three-phase separator shell (4), a sewage outlet is arranged in the sediment area, a liquid outlet is arranged in the liquid area, and an exhaust port is arranged in the gas area;
the gas-liquid inlet pipeline is connected to the three-phase separator shell (4), and is also connected with a gas-liquid inlet control valve (1);
the sewage draining pipeline is communicated with a sewage draining outlet of the sediment area separated in the three-phase separator shell (4);
the liquid discharge pipeline is communicated with a liquid discharge port of a liquid area separated in the three-phase separator shell (4), and is connected with a second pneumatic regulating valve (14);
the exhaust pipeline is communicated with an exhaust port of a gas zone separated from the inner top of the three-phase separator shell (4), and the exhaust pipeline is connected with a first pneumatic regulating valve (7);
the gas storage device is respectively communicated with the first pneumatic adjusting valve (7) and the second pneumatic adjusting valve (14) through pipelines, and a pressure regulating valve (16) for regulating the air pressure at the first pneumatic adjusting valve (7) and the second pneumatic adjusting valve (14) is connected to the pipelines communicated with the first pneumatic adjusting valve (7) and the second pneumatic adjusting valve (14) so that the control air pressure at the first pneumatic adjusting valve (7) and the second pneumatic adjusting valve (14) is kept equal;
A float valve for controlling the opening and closing of the liquid outlet and the air outlet is arranged between the liquid outlet and the air outlet in the three-phase separator shell (4).
2. A method of using a three-phase separator system for use in a gas well drainage process according to claim 1, wherein: the exhaust port is provided with an exhaust valve (9), the liquid discharge port is provided with a liquid discharge valve (13), one end of the float valve is connected with the exhaust valve (9), the other end of the float valve is connected with the liquid discharge valve (13), and the two valves of the first pneumatic regulating valve (7) and the second pneumatic regulating valve (14) are of the same type, of the same structure and of the same working mode.
3. A method of using a three-phase separator system for use in a gas well drainage process as claimed in claim 2, wherein: the float valve comprises a spherical float (11), an upper float connecting rod (907), a lower float connecting rod (1301) and a balance valve (905), wherein one end of the spherical float (11) is connected with the exhaust valve (9) through the upper float connecting rod (907), the other end of the spherical float (11) is connected with the liquid discharge valve (13) through the lower float connecting rod (1301), and the balance valve (905) is connected with one end of the upper float connecting rod (907) and one end of the lower float connecting rod (1301) connected with the exhaust valve (9) and the liquid discharge valve (13).
4. A method of using a three-phase separator system for use in a gas well drainage process according to claim 3, wherein: the exhaust valve (9) and the drain valve (13) both comprise a valve seat (901), a valve housing (902), a valve displacement baffle (903), a valve head (904) and a balance valve displacement baffle (906), wherein the valve seat (901) is connected with the inner wall of a three-phase separator housing (4) around an exhaust port, one end of the valve housing (902) is connected with the valve seat (901), the other end of the valve housing (902) is connected with the valve displacement baffle (903), the valve head (904) is positioned in the valve housing (902) and can move up and down, the valve head (904) is of a semicircular spherical structure, the valve head (904) is of a hollow structure, the bottom of the valve head (904) is connected with the balance valve displacement baffle (906), the balance valve (905) penetrates through the balance valve displacement baffle (906) through an upper float connecting rod (907), the balance valve (905) and the connected upper float connecting rod (907) can move up and down in the valve head (904), the diameter of the semicircular spherical structure of the valve head (904) is smaller than the inner diameter of the valve housing (902), and the outer side wall of the valve head (904) is contacted with the inner wall of the valve housing (902).
5. A method of using a three-phase separator system for use in a gas well drainage process as claimed in claim 4, wherein: the valve is characterized in that a first through hole is formed in the side wall of one end of the valve housing (902) connected with the valve displacement baffle (903), a second through hole is formed in the balance valve displacement baffle (906), and a third through hole is formed in the top of the valve head (904).
6. A method of using a three-phase separator system for use in a gas well drainage process according to claim 1, wherein: the three-phase separator is characterized in that the top of the three-phase separator shell (4) is further provided with a safety valve (2), the three-phase separator shell (4) is internally provided with a flow shielding plate (3), the outlet direction of a second pneumatic regulating valve (14) connected to the liquid discharge pipeline is further connected with a second ball valve (15), the outlet direction of a first pneumatic regulating valve (7) connected to the exhaust pipeline is connected with a first ball valve (8), the bottom of the three-phase separator shell (4) is sediment (19), the middle of the three-phase separator shell (4) is separated liquid (12), the top of the three-phase separator shell (4) is separated gas (5), and the liquid discharge port is positioned on the inner wall of the three-phase separator shell (4) in the inlet direction of the gas-liquid inlet pipeline and is provided with a sediment baffle.
7. A method of using a three-phase separator system for use in a gas well drainage process according to claim 1, wherein: the blow-down pipeline comprises a first blow-down pipeline and a second blow-down pipeline, the first blow-down pipeline is connected with a first blow-down valve (18), the second blow-down pipeline is connected with a second blow-down valve (20), and the gas storage device is a gas storage bottle (17).
8. A method of using a three-phase separator system for use in a gas well drainage process according to claim 3, wherein: the buoyancy of the spherical floater (11) is equal to 2 times of self gravity, air chamber diaphragms and valve cores are arranged in the first pneumatic adjusting valve (7) and the second pneumatic adjusting valve (14), and the areas of the air chamber diaphragms in the first pneumatic adjusting valve (7) and the second pneumatic adjusting valve (14) are 10 times of the cross sections of the valve cores.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499711B (en) * | 2020-11-23 | 2023-08-11 | 盐城市贝迪塑业有限公司 | Multistage concentration separation processing apparatus of granulation sewage |
| CN112797220B (en) * | 2020-12-30 | 2022-11-22 | 森诺技术有限公司 | Double-acting float link mechanism for controlling liquid level of split equipment |
| CN116181306B (en) * | 2023-04-24 | 2023-08-22 | 北京科力丹迪技术开发有限责任公司 | Three-phase separator with automatic drainage structure and use method thereof |
| CN116429009B (en) * | 2023-06-13 | 2023-08-11 | 中感(安徽)矿山技术有限公司 | Mining intrinsic safety type laser scanner and application method thereof |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392586Y (en) * | 1999-10-28 | 2000-08-23 | 胜利石油管理局孤东采油厂 | Oil, gas water and sand separating-processing apparatus for oil-field joint station |
| CN101408444A (en) * | 2007-10-09 | 2009-04-15 | 上海一诺仪表有限公司 | Three-phase flow metering device of oil well |
| CN201632093U (en) * | 2009-11-27 | 2010-11-17 | 胜利油田胜利勘察设计研究院有限公司 | Dissolved air flotation three-phase separator |
| CN102720480A (en) * | 2012-06-16 | 2012-10-10 | 大安市创新机械工程技术有限责任公司 | Liquid-gas separation meter for oil well |
| CN103397868A (en) * | 2013-07-24 | 2013-11-20 | 濮阳泰和油气工程有限公司 | Skid-mounted integrated process device for coal bed gas drainage and production wells and method for applying skid-mounted integrated process device |
| CN103523982A (en) * | 2013-10-29 | 2014-01-22 | 中国石油天然气股份有限公司 | Electric-coagulation oil-water-sedimentation separation device |
| CN204034500U (en) * | 2014-09-02 | 2014-12-24 | 四川科宏石油天然气工程有限公司 | A kind of gas-liquid test separator |
| CN204151314U (en) * | 2014-07-31 | 2015-02-11 | 常州龙天金属制品有限公司 | Sweet natural gas horizontal three-phase separator |
| CN104806223A (en) * | 2014-01-23 | 2015-07-29 | 振华石油控股有限公司 | Three-phase separation device |
| CN104909419A (en) * | 2015-05-25 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas well fracturing flow-back fluid separation device |
| CN205398570U (en) * | 2016-03-08 | 2016-07-27 | 甘德顺 | Adsorption separation jar and natural gas separator blowoff valve power supply device |
| CN207598224U (en) * | 2017-11-14 | 2018-07-10 | 四川科宏石油天然气工程有限公司 | A kind of shale gas special horizontal gas-liquid sand three-phase separator measurement sled |
| CN210858690U (en) * | 2019-09-11 | 2020-06-26 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Three-phase separator system for gas well liquid drainage process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9248401B2 (en) * | 2013-08-09 | 2016-02-02 | E. Todd Wiggins | Separator |
| US10895141B2 (en) * | 2018-01-11 | 2021-01-19 | Encline Artificial Lift Technologies LLC | Controlled high pressure separator for production fluids |
-
2019
- 2019-09-11 CN CN201910856285.1A patent/CN110578510B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392586Y (en) * | 1999-10-28 | 2000-08-23 | 胜利石油管理局孤东采油厂 | Oil, gas water and sand separating-processing apparatus for oil-field joint station |
| CN101408444A (en) * | 2007-10-09 | 2009-04-15 | 上海一诺仪表有限公司 | Three-phase flow metering device of oil well |
| CN201632093U (en) * | 2009-11-27 | 2010-11-17 | 胜利油田胜利勘察设计研究院有限公司 | Dissolved air flotation three-phase separator |
| CN102720480A (en) * | 2012-06-16 | 2012-10-10 | 大安市创新机械工程技术有限责任公司 | Liquid-gas separation meter for oil well |
| CN103397868A (en) * | 2013-07-24 | 2013-11-20 | 濮阳泰和油气工程有限公司 | Skid-mounted integrated process device for coal bed gas drainage and production wells and method for applying skid-mounted integrated process device |
| CN103523982A (en) * | 2013-10-29 | 2014-01-22 | 中国石油天然气股份有限公司 | Electric-coagulation oil-water-sedimentation separation device |
| CN104806223A (en) * | 2014-01-23 | 2015-07-29 | 振华石油控股有限公司 | Three-phase separation device |
| CN204151314U (en) * | 2014-07-31 | 2015-02-11 | 常州龙天金属制品有限公司 | Sweet natural gas horizontal three-phase separator |
| CN204034500U (en) * | 2014-09-02 | 2014-12-24 | 四川科宏石油天然气工程有限公司 | A kind of gas-liquid test separator |
| CN104909419A (en) * | 2015-05-25 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas well fracturing flow-back fluid separation device |
| CN205398570U (en) * | 2016-03-08 | 2016-07-27 | 甘德顺 | Adsorption separation jar and natural gas separator blowoff valve power supply device |
| CN207598224U (en) * | 2017-11-14 | 2018-07-10 | 四川科宏石油天然气工程有限公司 | A kind of shale gas special horizontal gas-liquid sand three-phase separator measurement sled |
| CN210858690U (en) * | 2019-09-11 | 2020-06-26 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Three-phase separator system for gas well liquid drainage process |
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