NL2024676B1 - Automatic Supply System For Gas-Liquid-Solid Three-Phase Separation Characteristic Test - Google Patents
Automatic Supply System For Gas-Liquid-Solid Three-Phase Separation Characteristic Test Download PDFInfo
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- 239000007787 solid Substances 0.000 title claims abstract description 138
- 238000012360 testing method Methods 0.000 title claims abstract description 117
- 238000005191 phase separation Methods 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 413
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 299
- 239000007789 gas Substances 0.000 claims abstract description 136
- 238000003756 stirring Methods 0.000 claims abstract description 71
- 238000004088 simulation Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 10
- 239000012153 distilled water Substances 0.000 claims description 9
- 230000005514 two-phase flow Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 claims 46
- 238000013480 data collection Methods 0.000 claims 5
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 2
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- 238000012546 transfer Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 128
- 230000001105 regulatory effect Effects 0.000 abstract description 71
- 230000008569 process Effects 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000001612 separation test Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0005—Degasification of liquids with one or more auxiliary substances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0063—Regulation, control including valves and floats
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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Abstract
Automatic Supply System For Gas-Liquid-Solid Three-Phase Separation 5 Characteristic Test The present invention provides an automatic supply system for gas-liquid-solid three-phase separation characteristic test, which is applied to simulate the supply in multiphase separation test in the field of petroleum engineering. The automatic supply system for test is used for 10 implementing a gas-liquid-solid three-phase flow supply operation process of multiphase separation characteristic test in oil and gas production by using a gas simulator, a solid-liquid stirrer, a solid-liquid supercharger, a three-phase flow mixer and an automatic supply control system. The gas simulator is configured to automatically supply continuous and stable high-pressure nitrogen with an adjustable flow pressure through a nitrogen pressure regulating 15 valve in combination with a high-pressure nitrogen simulation test control system. The solid-liquid stirrer is configured to supply a continuous and stable normal-pressure solid-liquid flow through a solid-particle stirring pump in combination with a normal-pressure solid-liquid supply control system. The solid-liquid supercharger is configured to automatically supply a continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure through a solid-liquid 20 booster pump and a solid-liquid regulating valve in combination with a high-pressure solid-liquid simulation test control system. The three-phase flow mixer is configured to automatically supply a continuous and stable three-phase simulated flow through a three-phase mixed-flow pipe in combination with a high-pressure mixed-flow simulation test control system. 25
Description
Automatic Supply System For Gas-Liquid-Solid Three-Phase Separation Characteristic Test Technical Field The present invention relates to a supply system for simulating multiphase separation test in the field of petroleum engineering, in particular to an automatic supply system for gas-liquid-solid three-phase separation characteristics test and a process flow thereof.
Background Art Itis an extremely complicated process to analyze the multiphase flowing and separation characteristics of oil and gas production.
At present, the study on the multiphase flowing mechanism such as flow pattern, pressure drop and liquid holdup of multiphase flow has not reached a clear and thorough level.
An existing multiphase flow model includes a separated flow model, a homogeneous flow model, a flow pattern model and the like, all of which are based on certain assumptions and are simplified by performing certain modifications on field test data or indoor experimental data.
At present, a multiphase separation characteristic test device for oil and gas production mainly includes an inclined gas-liquid two-phase pipe flow test device, a vertical oil and gas well simulation test device and the like, wherein the inclined gas-liquid two-phase pipe flow test device consists of a test pipe section, a liquid supply system, a liquid discharge system and a control system.
The test pipe section is made of organic glass, and a test pipe rack in the test pipe section is equipped with an angle measuring device which indicates the inclination degree of the pipe section.
The liquid supply system is supplied by a pump and an air compressor.
After being mixed, metered and tested, gas and liquid enter a gas-liquid separator through the test pipe section for separation treatment.
The separated gas is emptied through the liquid discharge system, and meanwhile the liquid is conveyed to a liquid storage tank through the liquid discharge system for recycling.
The control svstem implements the control and proportion metering of test liquid.
Control valves and indicating instruments of the control system are disposed on a centralized control panel.
A test pipe section of the vertical oil and gas well simulation test device 1s made of transparent organic glass pipes and simulates a real well body structure.
In a control system of the vertical oil and gas well simulation test device, a pressure sensor, a turbine flowmeter and a flow integrater are installed at an inlet and an outlet of the test pipe section, respectively.
Resistance sensors are installed at two ends and the middle portion of the test pipe section, and a data acquisition circuit and processing software are arranged to acquire and store data.
A liquid supply system and a liquid discharge system of the vertical oil and gas well simulation test device are similar to those of the inclined gas-liquid two-phase pipe flow test device.
In summary, the current multiphase separation characteristic test system for oil and gas production mainly includes the inclined gas-liquid two-phase pipe flow test device and the vertical oil and gas well simulation test device, and 1s used to study gas-liquid two-phase flowing test and the like in oil and gas production. However. there are fewer simulation test devices for multiphase separation in oil and gas production. At the same time, gas in the liquid supply system of the inclined gas-liquid two-phase pipe flow test device and the liquid supply system of the vertical oil and gas well simulation test device is supplied by the air compressor, and no gas pressure regulating valve and gas flowmeter are provided, thereby causing an unstable flow pressure and a relatively large measurement error of high-pressure gas. In addition, liquid in the liquid supply system of the inclined gas-liquid two-phase pipe flow test device and the liquid supply system of the vertical oil and gas well simulation test device is supplied by a pump, and no liquid regulating valve and variable frequency motor are provided. thereby causing a limited liquid supply pressure range and a unstable liquid supply flow pressure. In addition, no dedicated flow mixer is provided for each liquid supply system, such that relevant tests are carried out under mcomplete mixing after the gas-liquid mixing and metering, thereby making 1t difficult to simulate a true gas-liquid-solid three-phase flow.
Summary of the Invention In order to effectively solve the technical problem in multiphase flow simulation of oil and gas production and overcome the defects and deficiencies existing m the liquid supply systems of the existing gas-liquid-solid three-phase separation test device, the object of the present invention is to provide an automatic supply system for a gas-liquid-solid three-phase flow for separation characteristics test in oil and gas production, and a relevant control flow thereof. The automatic supply system for test is configured to remotely and automatically regulate the supply of high-pressure nitrogen, a high-pressure solid-liquid flow and a three-phase simulated flow through a gas simulator, a solid-liquid stirrer, a solid-liquid supercharger, a three-phase flow mixer and an automatic supply control system, and implement a gas-liquid-solid three-phase flow supply operation process for multiphase separation characteristic test in oil and gas production.
The technical solution adopted by the present invention to solve the technical problem is to develop an automatic supply system for gas-liquid-solid three-phase separation characteristic test, which is mainly composed of a gas simulator, a solid-liquid stirrer, a solid-liquid supercharger, a three-phase flow mixer and an automatic supply control system. The gas simulator is configured to remotely and automatically regulate the supply of the high-pressure nitrogen in combination with the automatic supply control system, the solid-liquid stirrer and the solid-liquid supercharger are configured to automatically regulate the supply of the high-pressure solid-liquid flow in combination with the automatic supply control system, and meanwhile the three-phase flow mixer is configured to remotely and automatically regulate the supply of three-phase simulated flow in combination with the automatic supply control system.
The gas simulator is configured to automatically supply continuous and stable high-pressure nitrogen with an adjustable flow pressure through a nitrogen pressure regulating valve m combination with a high-pressure nitrogen simulation test control system, and includes a nitrogen tank. a gas exhaust manifold, a nitrogen pressure regulating valve, an intelligent nitrogen flowmeter and a gas conveying manifold. A movable tubular gas cylinder is adopted as the nitrogen tank; the nitrogen tank is configured to store high-pressure nitrogen therein, and is connected with a nitrogen inlet pipe of the three-phase flow mixer through the gas conveying manifold via the gas exhaust manifold, and meanwhile the nitrogen pressure regulating valve is arranged on the gas exhaust manifold and the intelligent nitrogen flowmeter is arranged on the gas conveying manifold; a pneumatic pressure control valve is adopted as the nitrogen pressure regulating valve to regulate a design pressure regulated by a self-operated pressure regulating valve to a simulated gas pressure according to a mixed-flow pressure in the three-phase flow mixer; and an orifice-plate type gas flowmeter is adopted as the intelligent nitrogen flowmeter to automatically compensate the pressure and temperature of high-pressure nitrogen after pressure regulation in an advanced micro-power consumption manner.
The automatic supply process of high-pressure nitrogen simulated gas mn the gas simulator is as follows: the high-pressure nitrogen in the nitrogen tank is output through the gas exhaust manifold. and the nitrogen pressure regulating valve regulates the design pressure regulated by the self-operated pressure regulating valve to the simulated gas pressure according to the mixed-flow pressure in the three-phase flow mixer so as to reach an operation pressure for the separation characteristic test; the high-pressure nitrogen is then metered through the intelligent nitrogen flowmeter; and finally, continuous and stable high-pressure nitrogen with an adjustable flow pressure is automatically supplied by the gas conveving manifold and the nitrogen inlet pipe to the three-phase flow mixer.
The solid-liquid stirrer is configured to supply a continuous and stable normal-pressure solid-liquid flow through a solid-particle stirring pump in combination with a normal-pressure solid-liquid supply control system, and includes a normal-pressure stirring tank, a solid-particle stirring pump, a normal-pressure solid-liquid conveying manifold, and an intelligent solid-liquid flowmeter. The mtelligent solid-liquid flowmeter is arranged on the normal-pressure solid-liquid conveying manifold, and a turbine type liquid flowmeter is adopted as the intelligent solid-liquid flowmeter to perform metering in a microcomputer control and ultra-low power consumption manner; and meanwhile, the normal-pressure stirring tank is connected with the normal-pressure solid-liquid conveving manifold through a liquid discharge pipe and is connected with a solid-liquid booster pump into a whole via a pump liquid inlet pipe.
The normal-pressure stirring tank adopts a vertical cylindrical tank body, and consists of a water inlet pipe, a liquid discharge pipe, an stirring tank body and a pump support. wherein the inlet pipe and the liquid discharge pipe of the normal-pressure stirring tank are respectively arranged on the upper part and the lower part of the stirring tank body of the normal-pressure stirring tank, and the bottom end of the stirring tank body is provided with a skirt sleeve for supporting: the pump support of the normal-pressure stirring tank adopts a cross-shaped I-beam truss structure, and is fixed to the top of the stirring tank by welding; and meanwhile, double flange plates are arranged at the truss mtersection of the pump support.
The solid-particle stirring pump is configured to pump distilled water into the normal-pressure stirring tank through the water inlet pipe and stir the solid-liquid two-phase flow in the stirring tank, and is composed of a motor, a centrifugal pump and a long-shaft tvpe stirrmg wheel, wherein the motor and the centrifugal pump of the solid-particle stirring pump are of an integrated structure in which the bottom end of the centrifugal pump passes through a flange plate to fix the solid-particle stirring pump onto the double flange plates of the pump support of the normal-pressure stirring tank, and meanwhile the pump shaft end of the centrifugal pump extends out of the pump and is connected with the long-shaft type stirring wheel into a whole through a coupling; double layers of stirring impellers are arranged on the lower part of the wheel axle of the long-shaft type stirring wheel, and the stirring impellers of respective layers adopt spiral blades in the same rotational direction.
The normal-pressure solid-liquid flow supply process of the solid-liquid stirrer is as follows: a motor of the solid-particle stirring pump drives the centrifugal pump thereof to pump the distilled water and convey the distilled water to the normal-pressure stirring tank through the water inlet pipe, and solid particles for test are then added into the stirring tank body of the normal-pressure stirring tank; the solid-liquid two-phase flow in the stirring tank body 1s stirred by the long-shaft type stirring wheel of the solid-particle stirring pump to form a normal-pressure solid-liquid flow: and next, the normal-pressure solid-liquid flow flows through the solid-liquid flowmeter, and enters the solid-liquid booster pump through the normal-pressure solid-liquid conveying manifold and the pump liquid inlet pipe.
The solid-liquid supercharger is configured to automatically supply a continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure through the solid-liquid booster pump and the solid-liquid regulating valve in combination with the high-pressure solid-liquid simulation test control system, and includes a pump liquid inlet pipe, a variable frequency motor, a solid-liquid booster pump, a pump liquid outlet pipe. a high-pressure solid-liquid conveying manifold, and a solid-liquid regulating valve.
The pump liquid inlet pipe and the pump liquid outlet pipe are respectively arranged at an inlet and an outlet of the solid-liquid booster pump, and meanwhile the solid-liquid booster pump is connected with the high-pressure solid-liquid 5 conveving manifold and the solid-liquid regulating valve on the high-pressure solid-liquid delivery manifold through the pump liquid outlet pipe and is connected with the three-phase flow mixer into a whole through the solid-liquid inlet pipe.
A single-screw pump is adopted as the solid-liquid booster pump to pressurize the normal-pressure solid-liquid flow to form a high-pressure solid-liquid flow; two ends of a screw of the solid-liquid booster pump are connected with a pump casing through a bearing pedestal, and the screw is integrally machined from a cylindrical rod body: a spiral passage is formed between the outer surface of the screw and the shell wall of the pump casing; and meanwhile, one end of the screw extends out of the pump and is connected with the variable frequency motor into a whole through a coupling.
The variable frequency motor automatically regulates the frequency of an up-converter thereon according to the mixed-flow pressure and the liquid level condition in the normal-pressure stirring tank, then controls a screw speed of the solid-liquid booster pump and pressurizes the normal-pressure solid-liquid flow to form a high-pressure solid-liquid flow.
A solid-liquid regulating valve is arranged on the high-pressure solid-liquid conveying manifold, and a pneumatic pressure control valve is adopted as the solid-liquid regulating valve to regulate a flow pressure pressurized by the solid-liquid booster pump into a simulated solid-liquid pressure according to the flow pressure in the high-pressure solid-liquid conveying manifold.
The automatic supply process of simulated liquid for the high-pressure solid-liquid flow in the solid-liquid supercharger is as follows: the normal-pressure solid-liquid flow enters the solid-liquid booster pump through the pump liquid inlet pipe; the variable frequency motor automatically regulates the frequency of the up-converter thereof according to the mixed-flow pressure and the liquid level condition in the normal-pressure stirring tank, so as to control the screw speed of the solid-liquid booster pump and pressurize the normal-pressure solid-liquid flow to form a high-pressure solid-liquid flow: next, the high-pressure solid-liquid is conveyed into the high-pressure solid-liquid conveving manifold through the pump liquid outlet pipe; the solid-liquid regulating valve regulates the flow pressure pressurized by the solid-liquid booster pump to the simulated solid-liquid pressure according to the flow pressure in the high-pressure solid-liquid conveying manifold, thereby reaching an operation pressure for the separation characteristic test: and finally the solid-liquid inlet pipe automatically supplies a continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure to the three-phase flow mixer,
The three-phase flow mixer 1s configured to automatically supply a continuous and stable three-phase simulated flow through a three-phase mixed-flow pipe in combination with a high-pressure mixed-flow simulation test control system, and includes a three-phase mixed-flow pipe and an intelligent three-phase flowmeter.
The intelligent three-phase flowmeter 1s arranged on a mixed-flow discharge pipe of the three-phase mixed-flow pipe, and a turbine type multiphase flowmeter is adopted as the intelligent three-phase flowmeter to perform metering in a microcomputer control and ultra-low power consumption manner; and the three-phase mixed-flow pipe is connected with the gas simulator through the nitrogen inlet pipe and is connected with the solid-liquid supercharger into a whole through the solid-liquid inlet pipe.
The three-phase mixed-flow pipe adopts a horizontally arranged pipe body and is configured to complete uniform mixing of the gas-liquid-solid three-phase flow to form a three-phase simulated flow. and consists of a nitrogen inlet pipe, a solid-liquid inlet pipe, a mixed-flow outer pipe, a mixed-flow inner pipe and a mixed-flow discharge pipe, wherein the solid-liquid inlet pipe, the mixed-flow inner pipe and the mixed-flow discharge pipe are sequentially coaxially arranged from left to right, and the mixed-flow mner pipe and the mixed-flow outer pipe are coaxially arranged from 1nside to outside to form a mixed-flow double-laver pipe.
The solid-liquid inlet pipe and the nitrogen inlet pipe are respectively arranged on the side end part and the pipe wall of the three-phase mixed-flow pipe, and a conical spray pipe is adopted as the solid-liquid inlet pipe; and the inner wall of an annular cavity of the solid-liquid inlet pipe is formed by combining a cylindrical flow passage and a conical flow passage.
The mixed-flow outer pipe adopts a thick and long pipe body: flange plates of the same model are arranged at two side ends of the mixed-flow outer pipe; circular through holes are drilled in the central parts of the two flange plates respectively, the axial fixation of the solid-liquid inlet pipe and the axial fixation of the mixed-flow discharge pipe are respectively implemented by circumferential welding; and the axial fixation of the mixed-flow inner pipe is implemented by interference fit between outer circular surfaces at two ends of the mixed-flow inner pipe and the inner wall of an annular cavity of the mixed-flow outer pipe.
The mixed-flow inner pipe is formed by combining a compression pipe section, a flat-flow pipe section and a diffusion pipe section, wherein the flat-flow pipe section of the mixed-flow inner pipe adopts a slender pipe body, and the diameter of the inner wall of an annular cavity of the flat-flow pipe section is larger than the diameter of a circular surface at the small end of a conical surface on the conical flow passage of the solid-liquid inlet pipe.
The compression pipe section and the diffusion pipe section of the mixed-flow inner pipe each adopt a conical pipe body. an gjection outlet of the solid-liquid inlet pipe 1s positioned in an annular cavity of the compression pipe section of the mixed-flow inner pipe. and the conicity of a conical surface on the inner wall of the annular cavity of the compression pipe section is larger than that of a conical surface on the mner wall of an annular cavity of the diffusion pipe section of the mixed-flow inner pipe is located and that of the conicity of a conical surface on the conical flow passage of the solid-liquid inlet pipe: and the cone height of the conical surface on the inner wall of the annular cavity of the compression pipe section is smaller than that of the conical surface on the inner wall of the annular cavity of the diffusion pipe section.
The automatic supply process of the three-phase simulated flow in the three-phase flow mixer is as follows: the high-pressure nitrogen enters a pipe cavity of the mixed-flow outer pipe of the three-phase mixed-flow pipe through a nitrogen inlet pipe via a gas conveying manifold, and meanwhile the high-pressure solid-liquid flow sequentially flows through a high-pressure solid-liquid conveying manifold and a cylindrical flow passage of the solid-liquid inlet pipe and is cJected into the mixed-flow inner pipe through the conical flow passage and the ejection outlet of the solid-liquid inlet pipe to form a low-pressure zone. thereby being beneficial to input of the high-pressure nitrogen; the flow velocity of the gas-liquid-solid three-phase flow m the compression pipe section of the mixed-flow inner pipe is reduced while the flow pressure is gradually increased; the gas-liquid-solid three-phase flow then enters the flat-flow pipe section of the mixed-flow mner pipe for long-distance migration and fully and uniformly mixing: and finally, the gas-liquid-solid three-phase flow is pressure-stabilized and regulated by the diffusion pipe section of the mixed-flow nner pipe to form a continuous and stable three-phase simulated flow which then flows through the intelligent three-phase flowmeter and is output from the mixed-flow discharge pipe.
The automatic supply control system is configured to implement remote automatic control of the gas-liquid-solid three-phase flow supply operation process in oil and gas production and ensure the flowing safety of the gas-liquid-solid three-phase flow, and includes a high-pressure nitrogen simulation test control system, a normal-pressure solid-liquid supply control system, a high-pressure solid-liquid simulation test control system and a high-pressure mixed-flow simulation test control system, and is configured to remotely and automatically regulate the supply of the high-pressure nitrogen, the high-pressure solid-liquid flow and the three-phase simulated flow through a pressure transmitter, a self-operated pressure regulating valve, a liquid level transmitter, a local control panel, a conversion switch, a frequency converter, a data acquisition system and the like.
In the high-pressure nitrogen simulation test control system, the intelligent nitrogen flowmeter 1s configured to monitor a flow rate, a flow pressure and a temperature of the high-pressure nitrogen in real time, and meanwhile transmit a high-pressure nitrogen flow rate signal, a flow pressure signal and a temperature signal, which are monitored in real time, together to the data acquisition system and an accumulated flow display instrument thereof through a flow transmitter, a pressure transmitter and a temperature transmitter respectively.
In the high-pressure nitrogen simulation test control system, the gas exhaust manifold between a pressure release valve and a nitrogen pressure regulating valve is provided with the self-operated pressure regulating valve, the self-operated pressure regulating valve being configured to regulate a supply pressure of the high-pressure nitrogen to a design pressure for the separation characteristic test according to the mixed-flow pressure in the three-phase flow mixer and provide continuous and stable high-pressure nitrogen.
The pressure release valve is arranged at the outlet of the nitrogen tank and configured to automatically release high-pressure nitrogen under an overpressure working condition and regulate the pressure in the nitrogen tank.
In the high-pressure nitrogen simulation test control system, the pressure transmitter of the mixed-flow outer pipe is configured to monitor a mixed-flow pressure condition in the pipe in real time. and a pressure indicating controller and a pneumatic-clectric converter are configured to complete signal conversion and data processing in sequence, so as to automatically control the gas momentum of the nitrogen pressure regulating valve on the gas exhaust manifold and regulate the flow pressure and the supply volume of the high-pressure nitrogen.
In the high-pressure nitrogen simulation test control system, the pressure transmitter is arranged on the gas conveving manifold between the intelligent nitrogen flowmeter and the nitrogen inlet pipe, and configured to monitor a pressure regulating condition of the nitrogen pressure regulating valve m real time, a pressure gauge is configured to display an instantancous simulated gas pressure, and meanwhile the pressure indicating controller is configured to transmit a simulated gas pressure signal to the data acquisition system.
In the normal-pressure solid-liquid supply control system, the intelligent solid-liquid flowmeter is configured to monitor an instantaneous flow rate and an accumulated flow rate of the normal-pressure solid-liquid flow in real time, and meanwhile transmit a solid-liquid flow rate signal monitored in real time to the data acquisition system and an instantaneous flow display instrument and an accumulated flow display instrument thereof through the flow transmitter.
In the high-pressure solid-liquid simulation test control system, the local control panel. the conversion switch and the frequency converter are arranged in front of the variable frequency motor, a liquid level transmitter is arranged on the tank wall of the normal-pressure stirring tank to monitor a liquid level change condition in the tank in real time; and meanwhile the pressure transmitter of the mixed-flow outer pipe monitors a mixed-flow pressure condition mm the pipe in real time; a liquid level indicating controller, a pressure indicating controller and a conversion switch are configured to complete signal conversion and data processing respectively, and then the local control panel is configured to automatically regulate the frequency of a frequency converter of the variable frequency motor, thereby controlling a screw speed of the solid-liquid booster pump.
In the high-pressure solid-liquid simulation test control system, the pressure transmitter is arranged on the high-pressure solid-liquid conveying manifold, and configured to monitor a pressure condition of the high-pressure solid-liquid flow in the manifold in real time. and the pressure indicating controller and a pneumatic-electric converter are configured to complete signal conversion and data processing in sequence, thereby automatically controlling the gas momentum of the solid-liquid regulating valve on the high-pressure solid-liquid conveving manifold, and regulate the flow pressure and the supply volume of the high-pressure solid-liquid flow.
In the high-pressure mixed-flow simulation test control system, a pressure transmitter is arranged on the pipe wall of the mixed-flow outer pipe, and configured to monitor a mixed-flow pressure condition in the pipe in real time; and meanwhile, a pressure transmitter is arranged on the pipe wall of the mixed-flow discharge pipe, and configured to monitor a flow pressure condition of the three-phase simulated flow supplied by the three-phase flow mixer in real time; a pressure gauge is configured to display an instantaneous simulated three-phase pressure. and meanwhile the pressure indicating controller is configured to transmit a simulated three-phase pressure signal to the data acquisition system.
In the high-pressure mixed-flow simulation test control system, the intelligent three-phase flowmeter is configured to monitor an instantaneous flow rate and an accumulated flow rate of the three-phase simulation flow in real time, and meanwhile transmit a mixed-flow rate signal monitored in real time to the data acquisition system as well as an instantaneous flow displaying mstrument and an accumulated flow displaying instrument thereof through the flow transmitter. The present invention can achieve the following technical effects: the automatic supply system for test implements a gas-liquid-solid three-phase flow supply operation process of multiphase separation characteristic test in oil and gas production. The gas simulator automatically supplies the continuous and stable high-pressure nitrogen with an adjustable flow pressure through the nitrogen pressure regulating valve in combination with the high-pressure nitrogen simulation test control system. The solid-liquid stirrer supplies the continuous and stable normal-pressure solid-liquid flow through the solid-particle stirring pump in combination with the normal-pressure solid-liquid supply control system. Then, the solid-liquid supercharger automatically supplies the continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure through the solid-liquid booster pump and the solid-liquid regulating valve in combination with the high-pressure solid-liquid simulation test control system. The three-phase flow mixer automatically supplies the continuous and stable three-phase simulated flow through the three-phase mixed-flow pipe in combination with the high-pressure flow simulation test control system.
The automatic supply control system realizes remote automatic control of the gas-liquid-solid three-phase flow supply operation process m oil-gas production and ensures the flowing safety thereof.
Brief Description of the Drawings The present invention will now be further described with reference to the accompanying drawings, but the invention is not limited to the following embodiments.
FIG. 1 is a schematic diagram showing a typical structure of an automatic supply system for gas-liquid-solid three-phase separation characteristic test according to the present invention.
FIG. 2 1s a structural diagram of a gas simulator in the automatic supply system for gas-liquid-solid three-phase separation characteristic test.
FIG. 3 is a pipeline and instrument control diagram of the gas simulator in the automatic supply system for gas-liquid-solid three-phase separation characteristic test.
FIG. 4 is a schematic diagram showing structures of a solid-liquid stirrer and a solid-liquid supercharger in the automatic supply system for gas-liquid-solid three-phase separation characteristic test.
FIG. 5 is a pipeline and instrument control diagram of the solid-liquid stirrer and the solid-liquid supercharger in the automatic supply svstem for gas-liquid-solid three-phase separation characteristic test.
FIG. 6 is a schematic diagram showing a structure of a three-phase flow mixer in the automatic supply system for gas-liquid-solid three-phase separation characteristic test.
FIG. 7 is a schematic diagram showing the structure of the three-phase mixed-flow pipe in the three-phase flow mixer.
FIG. 8 is a pipeline and instrument control diagram of the three-phase flow mixer in the automatic supply system for gas-liquid-solid three-phase separation characteristic test.
FIG. 9 is a diagram showing the process flow of the automatic supply operation of the gas-liquid-solid three-phase flow for oil and gas production in the automatic supply system for gas-liquid-solid three-phase separation characteristic test.
Reference symbols represent the following components: 1-gas simulator, 2-solid-liquid stirrer, 3-solid-liquid supercharger, 4-three-phase flow mixer, S-automatic supply control system, G-nitrogen tank, 7-gas exhaust manifold, $-nitrogen pressure regulating valve. 9-gas conveying manifold. 10-intelligent nitrogen flowmeter, 11-nitrogen inlet pipe, 12-pressure release valve, 13-self-operated pressure regulating valve, 14-pressure transmitter, 15-solid particle stirring pump, l6-normal-pressure stirring tank, 17-mtelligent solid-liquid flowmeter, 18-normal-pressure solid-liquid conveying manifold, 19-pump liquid inlet pipe, 20-variable frequency motor,
21-solid-liquid booster pump. 22-pump liquid outlet pipe, 23-solid-liquid regulating valve, 24-high-pressure solid-liquid conveying manifold, 25-solid-liquid inlet pipe, 26-frequency converter, 27-conversion switch, 28-liquid level transmitter, 29-three-phase mixed-flow pipe, 30-intelligent three-phase flowmeter, 31-mixed-flow outer pipe, 32-mixed-flow inner pipe, 33-mixed-flow discharge pipe and 34-data acquisition system. Detailed Description of the Invention In Fig. 1, an automatic supply system for gas-liquid-solid three-phase separation characteristic test is mainly composed of a gas simulator 1, a solid-liquid stirrer 2, a solid-liquid supercharger 3, a three-phase flow mixer 4, and an automatic supply control system 5. The automatic supply system is connected with a gas-liquid-solid three-phase separation characteristic test bench at the downstream thereof into a whole through a mixed-flow discharge pipe in the three-phase flow mixer 4. The automatic supply system for test may remotely and automatically control the supply of high-pressure nitrogen, a high-pressure solid-liquid flow, and a three-phase simulation flow, and hereby implement a gas-liquid-solid three-phase flow supply operation process in the multiphase separation characteristic test in oil and gas production.
In FIG. 1. in the automatic supply system for gas-liquid-solid three-phase separation characteristic test, the gas simulator 1 is configured to remotely and automatically regulate the supply of the high-pressure nitrogen in combination with the automatic supply control system 5. The solid-liquid stirrer 2 and the solid-liquid supercharger 3 are configured to automatically regulate the supply of the high-pressure solid-liquid flow in combination with the automatic supply control system 5. The three-phase flow mixer 4 is configured to remotely and automatically regulate the supply of the three-phase simulated flow in combination with the automatic supply control system
3.
In FIG. 1, in need of changes in a supply pressure and a supply volume of a gas-liquid-solid three-phase flow. the automatic supply system for gas-liquid-solid three-phase separation characteristic test may regulate the frequencies of a nitrogen pressure regulating valve in the gas simulator 1, a solid-liquid booster pump and a solid-liquid regulating valve in the solid-liquid supercharger 3, as well as a self-operated pressure regulating valve, a local control panel and a frequency converter in the automatic supply control system 5.
In FIG. 2, the gas simulator 1 automatically supplies continuous and stable high-pressure nitrogen with an adjustable flow pressure through a nitrogen pressure regulating valve 8 in combination with a high-pressure nitrogen simulation test control system in the automatic supply control system 5. The pressure of the nitrogen tank 6 is designed according to a simulated gas pressure of the supplied high-pressure nitrogen. The specification of the nitrogen pressure regulating valve 8
1s selected according to a mixed-flow pressure in the three-phase flow mixer 4. The specification of an intelligent nitrogen flowmeter 10 is selected according to a maximum flow rate and a maximum flow pressure of the high-pressure nitrogen.
Meanwhile, the specifications of a gas exhaust manifold 7, a gas conveying manifold 9 and a nitrogen inlet pipe 11 need to be designed according to the maximum flow pressure of the high-pressure nitrogen.
In FIG. 2, the nitrogen tank 6 of the gas simulator 1 is connected with the nitrogen inlet pipe 11 of the three-phase flow mixer 4 through the gas conveying manifold 9 via the gas exhaust manifold 7. The nitrogen pressure regulating valve 8 is arranged on the gas exhaust manifold 7, and configured to regulate a design pressure regulated by a self-operated pressure regulating valve in the high-pressure nitrogen simulation test control system to a simulated gas pressure according to a mixed-flow pressure in the three-phase flow mixer 4. The intelligent nitrogen flowmeter 10 is arranged on the gas conveying manifold 9. In addition. an orifice plate type gas flowmeter is adopted as the intelligent nitrogen flowmeter 10. In FIG. 2 and FIG. 3. the automatic supply process of simulated gas of high-pressure nitrogen in the gas simulator 1 1s as follows: high-pressure nitrogen m the nitrogen tank 6 is output through values, such as a pressure release valve 12 and a ball valve, and the gas exhaust manifold 7, and is pressure-regulated by the self-operated pressure regulating valve 13 to the design pressure for separation characteristic test, thereby ensuring that the pressure of the high-pressure nitrogen is maintained stable.
The high-pressure nitrogen then sequentially flows through the valves such as the nitrogen pressure regulating valve 8 and a ball valve.
The design pressure regulated by the self-operated pressure regulating valve 13 is regulated to a simulated gas pressure according to the mixed-flow pressure in the three-phase flow mixer 4. thereby realizing an operation pressure for separation characteristic test.
Next, the high-pressure nitrogen sequentially flows through flowmeters and valves, such as the gas conveying manifold 9 and the intelligent nitrogen flowmeter 10, a ball valve and a check valve.
The continuous and stable high-pressure nitrogen with an adjustable flow pressure is automatically supplied to the three-phase flow mixer 4 through the nitrogen inlet pipe 11. In FIG. 3, in a pipeline and instrument control method for the gas simulator 1, a high-pressure nitrogen simulation test control system of the automatic supply control system 5 transmits a high-pressure nitrogen flow rate signal, a flow pressure signal and a temperature signal, which are monitored by the intelligent nitrogen flowmeter 10 in real time. together to a data acquisition system and an accumulated flow display device (FQI) thereof through a flow transmitter (FIT), a pressure transmitter (PIT) and a temperature transmitter (TIT) on the gas conveying manifold 9 between the nitrogen pressure regulating valve 8 and the intelligent nitrogen flowmeter 10. In FIG. 3, in the pipeline and instrument control method for the gas simulator 1, the high-pressure nitrogen simulation test control system of the automatic supply control system 5 regulates a supply pressure of the high-pressure nitrogen to the design pressure for separation characteristic test through the self-operated pressure regulating valve 13 on the gas exhaust manifold 7 between the pressure release valve 12 and the nitrogen pressure regulating valve 8 according to the mixed-flow pressure in the three-phase flow mixer 4. and provides continuous and stable high-pressure nitrogen.
The high-pressure nitrogen simulation test control system automatically releases the high-pressure nitrogen under an overpressure working condition through the pressure release valve 12 at an outlet of the nitrogen tank 6 and regulates the pressure in the nitrogen tank 6. In FIG. 3. in the pipeline and instrument control method for the gas simulator 1, the high-pressure nitrogen simulation test control system of the automatic supply control system 5 monitors a mixed-flow pressure condition in a mixed-flow outer pipe in real time through a pressure transmitter 14 of the mixed-flow outer pipe, and completes signal conversion and data processing through a pressure indicating controller (PIC) and a pneumatic-electricity converter (PY) in sequence, thereby automatically controlling the gas momentum of the nitrogen pressure regulating valve 8 on the gas exhaust manifold 7 and regulating a flow pressure and a supply volume of the high-pressure nitrogen.
In FIG. 3, in the pipeline and instrument control method for the gas simulator 1, the high-pressure nitrogen simulation test control svstem of the automatic supply control system 3 monitors a pressure regulating condition of the nitrogen pressure regulating valve 8 in real time through the pressure transmitter 14 on the gas conveving manifold 9 between the intelligent nitrogen flowmeter 10 and the nitrogen inlet pipe 11, displays an instantaneous simulated gas pressure through a pressure gauge (PI), and meanwhile transmit a simulated gas pressure signal to the data acquisition system according to the pressure indicating controller (PIC). In FIG. 4, the solid-liquid stirrer 2 supplies a continuous and stable normal-pressure solid-liquid flow through a solid-particle stirring pump 15 in combination with a normal-pressure solid-liquid supply control system in the automatic supply control system 5. The tank capacity of the normal-pressure stirring tank 16 1s selected according to the supply volume of high-pressure solid-liquid flow.
In addition, the specifications of a water inlet pipe and a liquid discharge pipe in the normal-pressure stirring tank 16 and a normal-pressure solid-liquid conveying manifold 18 need to be designed according to the flow rate of distilled water.
In addition, it 1s necessary to consider the factors, such as the supply volume of distilled water, a vertical height difference between an inlet of the centrifugal pump and the liquid surface of the solid-liquid two-phase flow in the normal-pressure stirring tank 16, and the maximum resistance under which a long-shaft type stirring wheel stirs the solid-liquid two-phase flow in the case of the model selection for the solid-particle stirring pump 15. In addition, the model of a motor in the solid-particle stirring pump 15 keeps consistent with the pump type of the centrifugal pump of the solid-particle stirring pump.
Meanwhile, the specification of the intelligent solid-liquid flowmeter 17 is selected according to the maximum flow rate of the normal-pressure solid-liquid flow.
In FIG. 4, the solid-liquid supercharger 3 automatically supplies a continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure through a solid-liquid booster pump 21 and a solid-liquid regulating valve 23 in combination with a high-pressure solid-liquid simulation test control system in the automatic supply control system 5. An outlet pressure of the solid-liquid booster pump 21 and a simulated solid-liquid pressure in a high-pressure solid-liquid conveying manifold 24 are designed according to on the mixed-flow pressure and the simulated three-phase pressure of the three-phase flow mixer 4. The model of the variable frequency motor 20 keeps consistent with the pump type of the solid-liquid booster pump 21. The specification of the solid-liquid regulating valve 23 is selected according to the flow pressure and the simulated solid-liquid pressure in the high-pressure solid-liquid conveving manifold 24. The specification of a pump liquid inlet pipe 19 keeps consistent with that of the normal-pressure solid-state conveving manifold 18. The specifications of the pump liquid outlet pipe 22, the high-pressure solid-liquid conveying manifold 24, and a solid-liquid inlet pipe 25 need to be selected according to the maximum flow rate and the maximum flow pressure of the high-pressure solid-liquid flow.
In FIG. 4, an intelligent solid-liquid flowmeter 17 is arranged on the normal-pressure solid-liquid conveying manifold 18 of the solid-liquid stirrer 2. The normal-pressure stirring tank 16 is connected with the normal-pressure solid-liquid conveying manifold 18 through a liquid discharge pipe. and 1s connected with the solid-liquid booster pump 21 into a whole through the pump liquid mlet pipe 19. The motor of the solid-particle stirring pump 15 and the centrifugal pump are integrated, and a pump shaft of the centrifugal pump of the solid-particle stirring pump 15 is connected with a long-shaft tvpe stirring wheel into a whole through a coupling.
A solid-liquid regulating valve 23 is arranged on the high-pressure solid-liquid conveying manifold 24 of the solid-liquid supercharger 3. A screw of the solid-liquid booster pump 21 is connected with the variable frequency motor 20 through a coupling.
The solid-liquid booster pump 21 is connected with the high-pressure solid-liquid conveying manifold 24 and the solid-liquid regulating valve 23 on the high-pressure solid-liquid manifold 24 via the pump liquid outlet pipe 22. and connected with the three-phase flow mixer 4 into a whole through the solid-liquid inlet pipe 25. In FIG. 4 and FIG. 5, the normal-pressure solid-liquid flow supply process of the solid-liquid stirrer 12 is as follows: the motor of the solid-particle stirring pump 15 drives the centrifugal pump thereof to pump the distilled water and convey the distilled water to an stirring tank body of the normal-pressure stirring tank 16 through the water inlet pipe.
Solid particles for test are then added into the stirring tank body.
The solid-liquid two-phase flow in the stirring tank body of the normal-pressure stirring tank 16 is stirred by the long-shaft tvpe stirring wheel of the solid-particle sturing pump 15 to form a normal-pressure solid-liquid flow.
Next, the normal-pressure solid-liquid flow sequentially flows through the flowmeters and valves, such as the intelligent solid-liquid flowmeter 17 and a ball valve, and enters the solid-liquid booster pump 21 through the normal-pressure solid-liquid conveying manifold 18 and the pump liquid inlet pipe 19. In FIG. 4 and FIG. 5, the automatic supply process of simulated liquid of high-pressure solid-liquid flow in the gas simulator 3 is as follows: the normal-pressure solid-liquid flow enters the solid-liquid booster pump 21 through the pump liquid inlet pipe 19. The variable frequency motor 20 automatically regulates the frequency of an up-converter thereon according to the mixed-flow pressure in the three-phase flow mixer 4 and the liquid level condition in the normal-pressure stirring tank 16, so as to control a screw speed of the solid-liquid booster pump 21 and pressurize the normal-pressure solid-liquid flow to form a high-pressure solid-liquid flow.
Next, the high-pressure solid-liquid flow is conveyed into the high-pressure solid-liquid conveying manifold 24 through the pump liquid outlet pipe 22 and valves, such as a ball valve and a check valve.
The solid-liquid regulating valve 23 regulates the flow pressure pressurized by the solid-liquid booster pump 21 to a simulated solid-liquid pressure according to the flow pressure in the high-pressure solid-liquid conveving manifold 24, thereby reaching an operation pressure for the separation characteristic test.
Finally, a continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure is automatically supplied to the three-phase flow mixer 4 through the solid-liquid mlet pipe 25. In FIG. 5, in a pipeline and instrument control method for the solid-liquid stirrer 2, a normal-pressure solid-liquid supply control system of the automatic supply control system 5 monitors an instantaneous flow rate and an accumulated flow rate of the normal-pressure solid-liquid flow mm real time through the intelligent solid-liquid flowmeter 17 on the normal-pressure solid-liquid conveying manifold 18. Meanwhile, the intelligent solid-liquid flowmeter 17 transmits a solid-liquid flow rate signal monitored in real time to the data acquisition system and an instantaneous flow display instrument (FI) and an accumulated flow display mstrument (FQT) thereof through the flow transmitter (FIT). In FIG. 5. in a pipeline and instrument control method for the solid-liquid supercharger 3. a high-pressure solid-liquid simulation test control system of the automatic supply control system 5 monitors a liquid level change condition in the stirring tank body of the normal-pressure stirring tank in real time through a liquid level transmitter 28 on the normal-pressure stirring tank 16. Meanwhile, the pressure transmitter 14 on the mixed-flow outer pipe in the three-phase flow mixer 4 monitors a mixed-flow pressure condition in the three-phase mixed-flow pipe in real time, completes signal conversion and data processing through a liquid level indicating controller (LIC),
a pressure indicating controller (PIC) and a conversion switch 27 respectively, and then automatically regulates the frequency of a frequency converter 26 of the variable frequency motor 20 through the local control panel, thereby controlling a screw speed of the solid-liquid booster pump 21.
In FIG. 5, in the pipeline and instrument control method for the solid-liquid supercharger 3, the high-pressure solid-liquid simulation test control system of the automatic supply control system 5 monitors a pressure condition of the high-pressure solid-liquid flow in the high-pressure solid-liquid conveying manifold 24 m real time through the pressure transmitter 14 on the high-pressure solid-liquid conveving manifold 24, and completes signal conversion and data processing through a pressure indicating controller (PIC) and a pneumatic-electric converter (PY) in sequence, so as to automatically control the gas momentum of the solid-liquid regulating valve 23 on the high-pressure solid-liquid conveying manifold 24 and regulate the flow pressure and the supply volume of the high-pressure solid-liquid flow. In FIG. 6, the three-phase flow mixer 4 automatically supplies a continuous and stable three-phase simulated flow through the three-phase mixed-flow pipe 29 in combination with the high-pressure mixed-flow simulation test control system in the automatic supply control system 5. An intelligent three-phase flowmeter 30 1s arranged on a mixed-flow discharge pipe of the three-phase mixed-flow pipe 29. The specification of the intelligent three-phase flowmeter 30 is selected according to the maximum flow rate and maximum flow pressure of the three-phase simulated flow. The three-phase mixed-flow pipe 29 is connected with the gas simulator 1 through the nitrogen inlet pipe 11 and is connected with the solid-liquid supercharger 3 into a whole through the solid-liquid inlet pipe 25. In FIG. 7, by means of the three-phase mixed-flow pipe 29, the gas-liquid-solid three-phase flow is uniformly mixed to form a three-phase simulated flow. The specification of the mixed-flow outer pipe 31 is designed according to the maximum flow rate and maximum flow pressure before uniform mixing of the gas-liquid-solid three-phase flow. The specifications of the mixed-flow inner pipe 32 and the mixed-flow discharge pipe 33 need to be designed according to the maximum flow rate and maximum flow pressure of the three-phase simulated flow formed after uniform mixing of the gas-liquid-solid three-phase flow. The mixed-flow pressure in the three-phase mixed-flow pipe 29 1s equal to the sum of the pressure drop of the three-phase simulated flow after uniform mixing of the gas-liquid-solid three-phase flow and the simulated three-phase pressure in the mixed-flow discharge pipe 33. The solid-liquid inlet pipe 25 and the nitrogen inlet pipe 11 are respectively arranged on the side end part and the pipe wall of the three-phase mixed-flow pipe 29. The mixed-flow inner pipe 32 and the mixed-flow outer pipe 31 are coaxially arranged from inside to outside to form a mixed-flow double-layer pipe.
In FIGS. 6 to 8, the automatic supply process of the three-phase simulated flow in the three-phase flow mixer 4 is as follows: the high-pressure nitrogen enters a pipe cavity of the mixed-flow outer pipe 31 of the three-phase mixed-flow pipe 29 through the gas conveying manifold 9 via the nitrogen inlet pipe 11. Meanwhile, the high-pressure solid-liquid flow sequentially flows through the high-pressure solid-liquid conveying manifold 24 and a cylindrical flow passage of the solid-liquid inlet pipe 25 and is gjected into the mixed-flow inner pipe 32 through a conical flow passage and an ejection outlet of the solid-liquid inlet pipe 25 to form a low-pressure zone, thereby being beneficial to mput of the high-pressure nitrogen.
The flow velocity of the gas-liquid-solid three-phase flow in a compression pipe section of the mixed-flow inner pipe 32 is reduced while the flow pressure is gradually increased.
Then, the gas-liquid-solid three-phase flow enters the flat-flow pipe section of the mixed-flow inner pipe 32 for long-distance migration and fully and uniformly mixing.
Finally, the gas-liquid-solid three-phase flow is pressure-stabilized and regulated through a diffusion pipe section of the mixed-flow inner pipe 32 to form a continuous and stable three-phase simulated flow, and then the three-phase simulated flow flows through the intelligent three-phase flowmeter 30 and valves such as a ball valve and is output from the mixed-flow discharge pipe 33. In FIG. 8, in a pipeline and instrument control method for the three-phase flow mixer 4, a high-pressure mixed-flow simulation test control system of the automatic supply control svstem 3 monitors a mixed-flow pressure condition in the three-phase mixed-flow pipe 29 in real time through the pressure transmitter 14 on the mixed-flow outer pipe 31, monitors a flow pressure condition of the three-phase simulated flow supplied by the three-phase flow mixer 4 in real time through the pressure transmitter 14 on the mixed-flow discharge pipe 33, display an instantancous simulated three-phase pressure through a pressure gauge (PI), and meanwhile transmit a simulated three-phase pressure signal to the data acquisition system through the pressure indicating controller (PIC). In FIG. 8, in the pipeline and instrument control method for the three-phase flow mixer 4, the high-pressure mixed-flow simulation test control system of the automatic supply control system 5 monitors an instantaneous flow rate and an accumulated flow rate of the three-phase simulated flow in real time through the intelligent three-phase flowmeter 30. and meanwhile the intelligent three-phase flowmeter 30 transmits a mixed-flow rate signal monitored in real time to the data acquisition system as well as an instantaneous flow displaying instrument (FI) and an accumulated flow displaying instrument (FQI) thereof through the flow transmitter (FIT). In FIG. 9. the automatic supply operation process of the gas-liquid-solid three-phase flow for oil gas production in the automatic supply svstem for the gas-liquid-solid three-phase separation characteristic test is as follows: the high-pressure nitrogen in the nitrogen tank 6 sequentially flows through the gas exhaust manifold 7 and the self-operated pressure regulating valve 13. The nitrogen pressure regulating valve 8 regulates the design pressure regulated by the self-operated pressure regulating valve 13 to the simulated gas pressure.
The high-pressure nitrogen then sequentially flows through the gas conveying manifold 9 and the intelligent nitrogen flowmeter 10. The continuous and stable high-pressure nitrogen with an adjustable flow pressure is automatically supplied to the three-phase flow meter 4 through the nitrogen inlet pipe 11. Meanwhile, the solid-particle stirring pump 15 pumps distilled water into the normal-pressure stirring tank 16 through the water mlet pipe and stirs the solid-liquid two-phase flow in the normal-pressure stirring tank 16 through a long-shaft type stirring wheel of the solid-particle stirring pump 15. The normal-pressure solid-liquid flow then sequentially flows through the intelligent solid-liquid flowmeter 17 and the normal-pressure solid-liquid conveying manifold 18 and enters the solid-liquid booster pump 21 through the pump liquid inlet pipe 19. Then, the variable frequency motor 20 automatically regulates the frequency of a frequency converter 26 and controls a screw speed of the solid-liquid booster pump 21 according to the mixed-flow pressure in the mixed-low outer pipe and the liquid level condition in the normal-pressure stirring tank 16. thereby pressurizing the normal-pressure solid-liquid flow to form a high-pressure solid-liquid flow.
Next, the high-pressure solid-liquid flow sequentially flows through the pump liquid outlet pipe 22 and the high-pressure solid-liquid conveving manifold 24, and the flow pressure pressurized by the solid-liquid booster pump 21 is regulated to the simulated solid-liquid pressure through the solid-liquid regulating control valve 23. Then, a continuous and stable high-pressure solid-liquid flow with an adjustable flow pressure is automatically supplies to the three-phase flow meter 4 through the solid-liquid inlet pipe 25. Finally, the high-pressure nitrogen and the high-pressure solid-liquid flow 1 the compression pipe section of the mixed-flow mner pipe 32 form a gas-liquid-solid three-phase flow.
The gas-liquid-solid three-phase flow 1s sufficiently and uniformly mixed in sequence through the mixed-flow inner pipe 32 and are pressure-stabilized and regulated to form a continuous and stable three-phase simulated flow.
The three-phase simulated flow then flows through the mtelligent three-phase flow meter 30 and is output from the mixed-flow discharge pipe.
In FIG. 9, the automatic supply operation process of the gas-liquid-solid three-phase flow for oil gas production m the automatic supply system for the gas-liquid-solid three-phase separation characteristic test is as follows: the high-pressure nitrogen simulation test control system transmits a high-pressure nitrogen flow rate signal, a flow pressure signal and a temperature signal, which are monitored in real time, together to the data acquisition system 34 through the intelligent nitrogen flowmeter 10. regulates a supply pressure of the high-pressure nitrogen to a design pressure for separation characteristic test through the self-operated pressure regulating valve 13,
and monitors a pressure regulating condition of the nitrogen pressure regulating valve 8 in real time and transmit a simulated gas pressure signal to the data acquisition system 34 through the pressure transmitter 14 on the gas conveying manifold 9. The normal-pressure solid-liquid supply control system transmits a solid-liquid flow rate signal monitored in real time to the data acquisition system 34 through the intelligent solid-liqud flowmeter 17. The high-pressure solid-liquid simulation test control system monitors a pressure condition of high-pressure solid-liquid flow in the high-pressure solid-liquid conveying manifold 24 in real time through the pressure transmitter 14 on the high-pressure solid-liquid conveying manifold 24 and transmits a simulated solid-liquid pressure signal to the data acquisition system 34, monitors a liquid level change condition in the stirring tank body in real time through the liquid level transmitter 28 on the normal-pressure stirring tank 16, monitors a mixed-flow pressure condition in the three-phase mixed-flow pipe 29 in real time through the pressure transmitter 14 on the mixed-flow outer pipe 31, and meanwhile completes signal conversion and data processing through the conversion switch 27. The high-pressure mixed-flow simulated test control system monitors a flow pressure condition of three-phase simulated flow supplied by the three-phase flow mixer 4 in real time through the pressure transmitter 14 on the mixed-flow discharge pipe 33 and transmits a simulated three-phase pressure signal to the data acquisition system 34, and transmits a mixed-flow rate signal monitored in real time to the data acquisition system 34 through the intelligent three-phase flowmeter 30.
The above embodiments are only used to illustrate the present invention, in which the connection modes and control methods of various systems, as well as the structures of various components can be changed. Any equivalent transformations and improvements based on the technical solution of the present invention should fall within the protection scope of the present invention.
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| CN109939578B (en) * | 2019-04-18 | 2021-06-04 | 青岛理工大学 | Automatic supply system for gas-liquid-solid three-phase separation characteristic test |
| CN115371979B (en) * | 2022-10-24 | 2022-12-30 | 四川新川航空仪器有限责任公司 | Three-phase eddy current separator performance evaluation test equipment |
| CN115389210B (en) * | 2022-10-27 | 2023-02-03 | 四川新川航空仪器有限责任公司 | Oil-gas simulation mechanism for oil-gas separation performance evaluation test |
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| ES2128946B1 (en) * | 1996-08-01 | 2000-01-16 | Pellicer Carlos F | PROCEDURE AND INSTALLATION TO OBTAIN A FLUID FINE PASTE INTENDED TO BE HARDENED AFTER MOLDING. |
| US20100247702A1 (en) * | 2007-05-14 | 2010-09-30 | Rompypaz Engineering Ltd. | Systems and methods for a controlled process for producing mixtures of lightweight construction materials and systems for automatic production of lightweight bricks |
| GB2520485B (en) * | 2013-11-15 | 2016-08-03 | Technical Simulation Consultants Ltd | Engineering Educational Tool |
| AT515448B1 (en) * | 2014-02-27 | 2018-04-15 | Haas Food Equipment Gmbh | Method and plant for producing and dispensing a baking mass |
| CN106430412B (en) * | 2016-11-03 | 2019-04-02 | 青岛理工大学 | Axial flow type underwater three-stage separation method and control system thereof |
| CN106761498B (en) * | 2016-12-20 | 2018-11-30 | 中国科学院广州能源研究所 | A kind of experimental provision and method for gas hydrates drilling fluid progress multi-phase separation |
| CN108283907A (en) * | 2018-03-23 | 2018-07-17 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Dispensation apparatus |
| CN108798606A (en) * | 2018-06-03 | 2018-11-13 | 西南石油大学 | A kind of simulation gas hydrates solid state fluidizing digging experimental provision and method |
| CN109637327A (en) * | 2018-12-19 | 2019-04-16 | 青岛理工大学 | Three-dimensional analogue test high-pressure gas supply system of deep water combustible ice step-down trial production |
| CN109637328B (en) * | 2018-12-19 | 2020-08-28 | 青岛理工大学 | Temperature-adjusting high-pressure water supply system for three-dimensional simulation test of pressure reduction and trial production of deepwater combustible ice |
| CN109939578B (en) * | 2019-04-18 | 2021-06-04 | 青岛理工大学 | Automatic supply system for gas-liquid-solid three-phase separation characteristic test |
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