CN211201913U - Device for evaluating hydrate production based on ultrasonic wave and sand control screen - Google Patents
Device for evaluating hydrate production based on ultrasonic wave and sand control screen Download PDFInfo
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Abstract
The utility model discloses an evaluation is based on device of ultrasonic wave and sand control screen cloth exploitation hydrate output, including high-pressure batch autoclave, high low temperature thermostated container, ultrasonic system, gas injection liquid system, gas-liquid-solid separation system, pressure control system and data acquisition system, high-pressure batch autoclave sets up in high low temperature thermostated container, and high low temperature thermostated container is used for controlling the temperature in the high-pressure batch autoclave to the temperature environment of simulation seabed hydrate reservoir, high-pressure batch autoclave are horizontal T type, and its vertical cavity is as hydrate reservoir simulation chamber, and its horizontal cavity is as hydrate exploitation output chamber. The utility model has the advantages of, simple structure, easy and simple to handle, good reliability can simulate big frequency super shot wave generator and to the vibration of hydrate reservoir and to sand control screen cloth and sand control screen cloth department sand granule, and then the evaluation subtracts the solid output of gas-liquid when stifled carrying out the hydrate exploitation based on ultrasonic wave output increase and sand control screen cloth, provides technical support for gas hydrate exploration and development.
Description
Technical Field
The utility model relates to a natural gas hydrate exploration and development technical field especially relate to the evaluation based on device of ultrasonic wave and sand control screen cloth exploitation hydrate output.
Background
The natural gas hydrate is an ice-like solid substance formed by water and gas (mainly methane) in a high-pressure low-temperature environment, the natural gas hydrate is widely distributed and rich in resources, and the estimated natural gas resource amount in the hydrate is 2 × 1016m3Equivalent to 2 × 105 million tons of oil equivalent, which is 2 times of the total carbon amount of the global conventional fuel, and China brings the fuel into the middle-long term scientific and technological development program.
At present, the exploitation of hydrate mainly comprises a depressurization method, a thermal excitation method, a chemical reagent method and CO2/N2Most hydrate reservoirs are fine sand, silt and argillaceous reservoirs by a displacement method, permeability is low, permeability is poor, and flow of water vapor is not facilitated during hydrate exploitation. From the hydrate pilot production project which has been carried out worldwide, the sand production of a well bore is an important factor for restricting the long-term safe and efficient production of the hydrate, so that the sand production of the well bore is a new problemCertain measures are taken to prevent sand in the process of exploiting the hydrate, but if the sand prevention precision is too high, sand particles transported along with fluid block the sieve tube, and the hydrate well productivity is reduced.
The high-power ultrasonic wave generating device is combined with a hydrate exploitation device, the permeability of a reservoir is improved through a cavity effect generated by the transmission of ultrasonic waves in pores of a hydrate reservoir, the purpose of increasing the yield is achieved, the ultrasonic wave generating device is installed at the position of a sand control screen, the sand control screen and nearby sand particles are excited to vibrate, the sand particles blocking the sand control screen fall off, the dual purposes of reducing blockage of the sand control screen, reopening a production channel and achieving sand control and capacity improvement are achieved. At present, no device for improving the productivity by using experimental means to research the vibration of ultrasonic waves to a reservoir and the vibration of sand particles at a sand control screen does not exist, so that a hydrate exploitation device based on ultrasonic wave production increase and sand control screen blockage reduction is developed, and the evaluation of the gas-liquid-solid output rule after the ultrasonic wave vibration is used is very important.
SUMMERY OF THE UTILITY MODEL
The utility model aims to have the technical current situation, provide the device of evaluation based on ultrasonic wave and sand control screen cloth exploitation hydrate output, the device simple structure, easy and simple to handle, good reliability can simulate the vibration of large frequency super-jet generator to the hydrate reservoir stratum and to the vibration of sand control screen cloth and sand control screen cloth department sand granule, and then the evaluation subtracts stifled hydrate exploitation gas-liquid-solid output based on ultrasonic wave output increase and sand control screen cloth, provides technical support for gas hydrate exploration and development.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the device for evaluating the yield of the hydrate mined based on the ultrasonic waves and the sand control screen comprises a high-pressure reaction kettle, a high-low temperature thermostat, an ultrasonic system, a gas injection and liquid injection system, a gas-liquid-solid separation system, a pressure control system and a data acquisition system;
the high-pressure reaction kettle is arranged in a high-low temperature constant temperature box, the high-low temperature constant temperature box is used for controlling the temperature in the high-pressure reaction kettle so as to simulate the temperature environment of a submarine hydrate reservoir, the high-pressure reaction kettle is of a transverse T type, a longitudinal cavity of the high-pressure reaction kettle is used as a hydrate reservoir simulation cavity, a transverse cavity of the high-pressure reaction kettle is used as a hydrate exploitation output cavity, a containing groove is arranged on the outer side wall of the longitudinal cavity of the high-pressure reaction kettle, a plurality of gas injection liquid injection ports are uniformly arranged between the containing groove and the inner side wall of the longitudinal cavity of the high-pressure reaction kettle, a filter plate is arranged in the containing groove, the containing groove is tightly locked and sealed by a cover plate through hexagon socket head screws to form an annular space, a main inlet is arranged on the cover plate, a water injection port is arranged on the, a sand collector is arranged at the lower end of the rigid pipe, a first stop valve and a second stop valve are sequentially arranged between the transverse cavity of the high-pressure reaction kettle on the rigid pipe and the sand collector, and the front end of the transverse cavity of the high-pressure reaction kettle is provided with an opening and high-pressure visual glass;
the ultrasonic system comprises a first ultrasonic generator, a second ultrasonic generator, a first ultrasonic transducer and a second ultrasonic transducer, wherein the first ultrasonic transducer is arranged on the side wall of the longitudinal cavity of the high-pressure reaction kettle and is connected with the first ultrasonic generator;
the gas injection and liquid injection system is divided into a gas injection branch and a liquid injection branch, the gas injection branch comprises a methane gas cylinder, a first pressure gauge, a second valve, a pressure regulating valve, a buffer tank, a second pressure gauge and a third valve, the methane gas cylinder, the second valve, the pressure regulating valve, the buffer tank and the third valve are sequentially connected through a high-pressure pipeline, the first pressure gauge is connected to a high-pressure pipeline between the methane gas cylinder and the second valve, the second pressure gauge is connected to the buffer tank, the liquid injection branch comprises a constant-temperature circulating water bath, a constant-temperature circulating pump and a fifth valve, the constant-temperature circulating water bath, the constant-temperature circulating pump and the fifth valve are sequentially connected through a high-pressure pipeline, and the gas injection branch and the liquid injection branch are connected with a fourth valve through the high;
the gas-liquid separation system comprises a gas-liquid separator, a seventh valve, a water collecting bottle, an eighth valve, a gas flowmeter and a gas collecting bottle, wherein the gas-liquid separator, the seventh valve and the water collecting bottle are sequentially connected through a high-pressure pipeline;
the pressure control system is divided into an axial pressure control system and a back pressure control system, the axial pressure control system comprises a distilled water tank, an axial pressure pump, a first valve and a piston, the piston is arranged in the high-pressure reaction kettle and is of an inverted T shape, a piston stop block is arranged at the upper end of the piston, the distilled water tank, the axial pressure pump and the first valve are sequentially connected through a high-pressure pipeline and are connected to a water filling port, the back pressure control system comprises a sixth valve and a back pressure valve, the sixth valve and the back pressure valve are sequentially arranged on the high-pressure pipeline between the air outlet and the gas-liquid separator, and the sixth valve and the back pressure valve are both positioned outside the high-low temperature constant;
the data acquisition system comprises an axial pressure sensor, a displacement sensor, a first pore pressure sensor, a second pore pressure sensor, an inlet pressure sensor, an outlet pressure sensor, a first temperature sensor, a second temperature sensor, a high-speed camera and a computer, wherein the axial pressure sensor is connected between a top cover and a piston of a longitudinal cavity of the high-pressure reaction kettle, the displacement sensor is connected with the piston, the first pore pressure sensor and the second pore pressure sensor are connected between a bottom cover and a piston of the longitudinal cavity of the high-pressure reaction kettle, the inlet pressure sensor is connected to a filter plate, the outlet pressure sensor is connected to the right side of a sand control screen in a transverse cavity of the high-pressure reaction kettle, the first temperature sensor and the second temperature sensor are connected between the bottom cover and the piston of the longitudinal cavity of the high-pressure reaction kettle, and the high-speed camera is arranged outside high-pressure visual glass, the axial pressure sensor, the displacement sensor, the first pore pressure sensor, the second pore pressure sensor, the inlet pressure sensor, the outlet pressure sensor, the first temperature sensor, the second temperature sensor and the high-speed camera are all connected into the computer through data acquisition signal lines.
The utility model has the advantages that:
the first ultrasonic transducer is arranged on the side wall of the longitudinal cavity of the high-pressure reaction kettle, the purpose of increasing the yield is realized by simulating a 'cavity' effect generated by the propagation of ultrasonic waves in pores of a hydrate reservoir, the second ultrasonic transducer is arranged on the side wall of the transverse cavity of the high-pressure reaction kettle and is positioned right above the sand control screen, when the sand particles at the sand control screen are gathered to block a production channel, the sand particles blocking the sand control screen mesh fall off by exciting the vibration of the sand control screen mesh and the nearby sand particles, and the output channel is reopened, so as to achieve the purposes of reducing the blockage of the sand control screen mesh and improving the productivity, further evaluating the effect of exploiting the hydrate output based on the ultrasonic wave and the sand control screen, the experimental device has simple structure and simple and convenient operation, the method has important economic value and social benefit for exploration and development of natural gas hydrate in China, and can also provide scientific experiments and researches for universities and scientific research institutes related to the hydrate.
Drawings
Fig. 1 is a schematic view of the high-pressure pipeline connection structure of each component of the present invention.
Description of the labeling: 1. distilled water tank, 2, axial pressure pump, 3, first valve, 4, methane gas bottle, 5, first pressure gauge, 6, second valve, 7, pressure regulating valve, 8, buffer tank, 9, second pressure gauge, 10, third valve, 11, constant temperature circulating water bath, 12, advection pump, 13, fifth valve, 14, fourth valve, 15, inlet pressure sensor, 16, axial pressure sensor, 17, displacement sensor, 18, second ultrasonic generator, 19, sixth valve, 20, back pressure valve, 21, eighth valve, 22, gas flowmeter, 23, gas collection bottle, 24, gas-liquid separator, 25, high speed camera, 26, seventh valve, 27, water collection bottle, 28, first ultrasonic generator, 29, computer, 30, first pore pressure sensor, 31, water injection port, 32, piston block, 33, piston, 34, high pressure reactor, 35, second ultrasonic transducer, 36. hexagon socket head cap screw, 37, first ultrasonic transducer, 38, total import, 39, apron, 40, gas injection liquid filling port, 41, second pore pressure sensor, 42, sand control screen cloth, 43, the liquid outlet, 44, the visual glass of high pressure, 45, export pressure sensor, 46, rigid pipe, 47, first stop valve, 48, second stop valve, 49, first temperature sensor, 50, second temperature sensor, 51, sand collector, 52, high and low temperature thermostated container, 53, filter.
Detailed Description
Referring to fig. 1, the device for evaluating the yield of hydrate mined based on ultrasonic waves and a sand control screen comprises a high-pressure reaction kettle 34, a high-low temperature incubator 52, an ultrasonic system, a gas injection and liquid injection system, a gas-liquid-solid separation system, a pressure control system and a data acquisition system.
The high-pressure reaction kettle 34 is arranged in a high-low temperature constant temperature box 52, the high-low temperature constant temperature box 52 is used for controlling the temperature in the high-pressure reaction kettle 34 so as to simulate the temperature environment of a seabed hydrate reservoir, the high-pressure reaction kettle 34 is of a transverse T shape, a longitudinal cavity of the high-pressure reaction kettle 34 is used as a hydrate reservoir simulation cavity, a transverse cavity of the high-pressure reaction kettle is used as a hydrate exploitation output cavity, a containing groove is arranged on the outer side wall of the longitudinal cavity of the high-pressure reaction kettle 34, a plurality of gas injection and liquid injection ports 40 are uniformly arranged between the containing groove and the inner side wall of the longitudinal cavity of the high-pressure reaction kettle 34, a filter plate 53 is arranged in the containing groove, the containing groove is locked and sealed by a cover plate 39 through hexagon socket head screws 36 to form an annular space, a main inlet 38 is arranged on the cover plate 39, a water injection, a rigid pipe 46 is arranged on the lower side of the transverse cavity of the high-pressure reaction kettle 34, a sand collector 51 is arranged at the lower end of the rigid pipe 46, a first stop valve 47 and a second stop valve 48 are sequentially arranged between the transverse cavity of the high-pressure reaction kettle 34 on the rigid pipe 46 and the sand collector 51, and the front end of the transverse cavity of the high-pressure reaction kettle 34 is provided with an opening and high-pressure visual glass 44.
The ultrasonic system comprises a first ultrasonic generator 28, a second ultrasonic generator 18, a first ultrasonic transducer 37 and a second ultrasonic transducer 35, wherein the first ultrasonic transducer 37 is arranged on the side wall of the longitudinal cavity of the high-pressure reaction kettle 34, the first ultrasonic transducer 37 is connected with the first ultrasonic generator 28, and the purpose of increasing the yield can be realized through the hole effect generated by the propagation of ultrasonic waves in the pores of a hydrate reservoir; second ultrasonic transducer 35 sets up on the lateral wall of the horizontal cavity of high pressure batch autoclave 34 and second ultrasonic transducer 35 is located sand control screen cloth 42 directly over, second ultrasonic transducer 35 is connected with second ultrasonic generator 18, when sand control screen cloth 42 department sand granule gathering and when blockking up the production passageway, through arousing sand control screen cloth 42 and near sand granule vibration, make the sand granule of blockking up sand control screen cloth 42 department drop, reopen the production passageway, reach sand control screen cloth 42 and subtract stifled, improve the purpose of productivity.
The gas injection and liquid injection system comprises a gas injection branch and a liquid injection branch, the gas injection branch comprises a methane gas cylinder 4, a first pressure gauge 5, a second valve 6, a pressure regulating valve 7, a buffer tank 8, a second pressure gauge 9 and a third valve 10, the methane gas cylinder 4, the second valve 6, the pressure regulating valve 7, the buffer tank 8 and the third valve 10 are sequentially connected through a high-pressure pipeline, the first pressure gauge 5 is connected on the high-pressure pipeline between the methane gas cylinder 4 and the second valve 6, the second pressure gauge 9 is connected on the buffer tank 8, the liquid injection branch comprises a constant-temperature circulating water bath 11, a constant-temperature circulating pump 12 and a fifth valve 13, the constant-temperature circulating water bath 11, the constant-temperature circulating pump 12 and the fifth valve 13 are sequentially connected through high-pressure pipelines, the gas injection branch and the liquid injection branch are connected with a fourth valve 14 through a high-pressure pipeline and are connected to a main inlet 38 after being connected in parallel, the constant-temperature circulating water bath 11 can be filled with water with corresponding temperature into the longitudinal cavity of the high-pressure reaction kettle 34 by the constant-temperature pump 12 according to the experiment requirement.
The gas-liquid separation system comprises a gas-liquid separator 24, a seventh valve 26, a water collecting bottle 27, an eighth valve 21, a gas flowmeter 22 and a gas collecting bottle 23, wherein the gas-liquid separator 24, the seventh valve 26 and the water collecting bottle 27 are sequentially connected through a high-pressure pipeline, the gas-liquid separator 24, the eighth valve 21, the gas flowmeter 22 and the gas collecting bottle 23 are sequentially connected through a high-pressure pipeline, and the gas-liquid separator 24 is communicated with a gas outlet 43 through a high-pressure pipeline.
Pressure control system divide into axle pressure control system and back pressure control system, axle pressure control system includes distilled water jar 1, axle pressure pump 2, first valve 3, piston 33 sets up in the vertical cavity of high pressure batch autoclave 34, piston 33 is the type of invering T, piston 33 upper end is equipped with piston dog 32, piston dog 32 is used for restricting piston 33's stroke, distilled water jar 1, axle pressure pump 2, first valve 3 connects gradually and inserts water filling port 31 through high-pressure pipeline, back pressure control system includes sixth valve 19, back pressure valve 20, sixth valve 19, back pressure valve 20 sets gradually on giving vent to anger the high-pressure pipeline between liquid outlet 43 and the vapour and liquid separator 24 and sixth valve 19, back pressure valve 20 all is located outside high low temperature thermostated container 52.
In the simulated mining process, produced gas and most of liquid enter a gas-liquid separator 24 through a sixth valve 19 and a back pressure valve 20, then the gas enters a gas collecting bottle 23 through an eighth valve 21 and a gas flowmeter 22, most of the liquid enters a water collecting bottle 27 through a seventh valve 26, and the rest of the liquid and sand enter a rigid pipe 46, when collection is needed, a first stop valve 47 is opened to allow the rest of the liquid and sand to enter a part between the first stop valve 47 and a second stop valve 48 in the rigid pipe 46, then the first stop valve 47 is closed, the second stop valve 48 is opened to allow the rest of the liquid and sand to enter a sand collector 51, the second stop valve 48 is closed, the sand collector 51 is taken down to collect the rest of the liquid and sand, and the sand collector 51 is installed again after collection is finished to collect the rest of the liquid and sand next time.
The data acquisition system comprises an axial pressure sensor 16, a displacement sensor 17, a first pore pressure sensor 30, a second pore pressure sensor 41, an inlet pressure sensor 15, an outlet pressure sensor 45, a first temperature sensor 49, a second temperature sensor 50, a high-speed camera 25 and a computer 29, wherein the axial pressure sensor 16 is connected between a top cover of a longitudinal cavity of the high-pressure reaction kettle 34 and a piston 33, the displacement sensor 17 is connected with the piston 33, the first pore pressure sensor 30 and the second pore pressure sensor 41 are connected between a bottom cover of the longitudinal cavity of the high-pressure reaction kettle 34 and the piston 33, the inlet pressure sensor 15 is connected to a filter plate 53, the outlet pressure sensor 45 is connected to the right side of a sand control screen 42 in a transverse cavity of the high-pressure reaction kettle 34, the first temperature sensor 49 and the second temperature sensor 50 are connected between the bottom cover of the longitudinal cavity of the high-pressure reaction kettle 34 and the piston 33, the high-speed camera 25 is arranged outside the high-pressure visual glass 44, the sand discharging condition can be directly observed, and the axial pressure sensor 16, the displacement sensor 17, the first pore pressure sensor 30, the second pore pressure sensor 41, the inlet pressure sensor 15, the outlet pressure sensor 45, the first temperature sensor 49, the second temperature sensor 50 and the high-speed camera 25 are all connected into the computer 29 through data acquisition signal lines.
Specifically, the method for evaluating the hydrate exploitation output based on the ultrasonic waves and the sand control screen by the device comprises the following steps:
s1, cleaning the inner walls of the longitudinal cavity and the transverse cavity of the high-pressure reaction kettle 34, the piston 33, the rigid pipe 46, the sand control screen 42 and the high-pressure visual glass 44 by using deionized water, checking the connectivity of the main inlet 38, the gas injection and liquid injection port 40, the water injection port 31, the gas and liquid outlet 43, the first stop valve 47, the second stop valve 48 and all high-pressure pipelines, connecting all high-pressure pipelines and components after checking, opening the methane gas bottle 4, introducing 1Mpa methane gas into the high-pressure reaction kettle 34, checking the air tightness of the device, and then emptying the methane gas in the high-pressure reaction kettle 34 by using the back-pressure valve 20;
s2, configuring corresponding quartz sand according to a particle size grading curve of an actual hydrate reservoir, adding corresponding water into the quartz sand according to the required hydrate saturation, fully and uniformly stirring to form an experimental sample, loading the experimental sample into a longitudinal cavity of the high-pressure reaction kettle 34, and installing the piston 33 and a top cover of the longitudinal cavity of the high-pressure reaction kettle 34;
s3, loading 10MPa axial pressure on the experimental sample through the axial pressure pump 2, opening the methane gas bottle 4, introducing 8MPa methane gas into the high-pressure reaction kettle 34, keeping the third valve 10 and the fourth valve 15 in an open state, ensuring excessive supply of the methane gas, then opening the high-low temperature constant temperature box 52, setting the temperature to be 2 ℃, and preparing the methane hydrate sediment;
s4, observing the generation of hydrates through the first temperature sensor 49, the second temperature sensor 50, the first pore pressure sensor 30 and the second pore pressure sensor 41, when the pore pressure in the high-pressure reaction kettle 34 is not reduced any more and is stabilized for 12 hours, considering that the generation of the hydrates is finished, completely reacting water when an experimental sample is prepared, setting a sediment-methane gas-hydrate system in the high-pressure reaction kettle 34, setting the back pressure valve 20 to be 9MPa, introducing water with the temperature of 2 ℃ in the constant-temperature circulating water bath 11 into the high-pressure reaction kettle 34 through the constant-flow pump 12, and displacing redundant methane gas to enable the sediment-water-hydrate system to be in the high-pressure reaction kettle 34, wherein the system conforms to the occurrence state of a seabed hydrate reservoir;
s5, opening the sixth valve 19, utilizing the back pressure valve 20 to carry out depressurization and exploitation on the hydrate reservoir stratum in the high-pressure reaction kettle 34, in the mining process, four different modes of the first ultrasonic generator 28 and the second ultrasonic generator 18 which are not started, only the first ultrasonic generator 28 is started, only the second ultrasonic generator 18 is started, and the first ultrasonic generator 28 and the second ultrasonic generator 18 are started are respectively selected, the frequencies of the different ultrasonic generators are selected under the different modes, in the process of exploiting a hydrate reservoir by a depressurization method, a gas-liquid-solid separation system is utilized to monitor and collect methane gas, water and sand in real time, by comparing the real-time yields of methane gas, water and sand, the production increasing effect of the ultrasonic system on the generation of a 'cavity' effect in pores during the exploitation of a hydrate reservoir and the blockage reducing effect on the vibration and falling of the sand blocking the sand control screen 42 are evaluated.
Of course, the above is only the preferred embodiment of the present invention, and the application range of the present invention is not limited thereto, so all the equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The evaluation is based on device of ultrasonic wave and sand control screen cloth exploitation hydrate output, its characterized in that: the device comprises a high-pressure reaction kettle, a high-temperature and low-temperature thermostat, an ultrasonic system, a gas injection and liquid injection system, a gas-liquid-solid separation system, a pressure control system and a data acquisition system;
the high-pressure reaction kettle is arranged in a high-low temperature constant temperature box, the high-low temperature constant temperature box is used for controlling the temperature in the high-pressure reaction kettle so as to simulate the temperature environment of a submarine hydrate reservoir, the high-pressure reaction kettle is of a transverse T type, a longitudinal cavity of the high-pressure reaction kettle is used as a hydrate reservoir simulation cavity, a transverse cavity of the high-pressure reaction kettle is used as a hydrate exploitation output cavity, a containing groove is arranged on the outer side wall of the longitudinal cavity of the high-pressure reaction kettle, a plurality of gas injection liquid injection ports are uniformly arranged between the containing groove and the inner side wall of the longitudinal cavity of the high-pressure reaction kettle, a filter plate is arranged in the containing groove, the containing groove is tightly locked and sealed by a cover plate through hexagon socket head screws to form an annular space, a main inlet is arranged on the cover plate, a water injection port is arranged on the, a sand collector is arranged at the lower end of the rigid pipe, a first stop valve and a second stop valve are sequentially arranged between the transverse cavity of the high-pressure reaction kettle on the rigid pipe and the sand collector, and the front end of the transverse cavity of the high-pressure reaction kettle is provided with an opening and high-pressure visual glass;
the ultrasonic system comprises a first ultrasonic generator, a second ultrasonic generator, a first ultrasonic transducer and a second ultrasonic transducer, wherein the first ultrasonic transducer is arranged on the side wall of the longitudinal cavity of the high-pressure reaction kettle and is connected with the first ultrasonic generator;
the gas injection and liquid injection system is divided into a gas injection branch and a liquid injection branch, the gas injection branch comprises a methane gas cylinder, a first pressure gauge, a second valve, a pressure regulating valve, a buffer tank, a second pressure gauge and a third valve, the methane gas cylinder, the second valve, the pressure regulating valve, the buffer tank and the third valve are sequentially connected through a high-pressure pipeline, the first pressure gauge is connected to a high-pressure pipeline between the methane gas cylinder and the second valve, the second pressure gauge is connected to the buffer tank, the liquid injection branch comprises a constant-temperature circulating water bath, a constant-temperature circulating pump and a fifth valve, the constant-temperature circulating water bath, the constant-temperature circulating pump and the fifth valve are sequentially connected through a high-pressure pipeline, and the gas injection branch and the liquid injection branch are connected with a fourth valve through the high;
the gas-liquid separation system comprises a gas-liquid separator, a seventh valve, a water collecting bottle, an eighth valve, a gas flowmeter and a gas collecting bottle, wherein the gas-liquid separator, the seventh valve and the water collecting bottle are sequentially connected through a high-pressure pipeline;
the pressure control system is divided into an axial pressure control system and a back pressure control system, the axial pressure control system comprises a distilled water tank, an axial pressure pump, a first valve and a piston, the piston is arranged in the high-pressure reaction kettle and is of an inverted T shape, a piston stop block is arranged at the upper end of the piston, the distilled water tank, the axial pressure pump and the first valve are sequentially connected through a high-pressure pipeline and are connected to a water filling port, the back pressure control system comprises a sixth valve and a back pressure valve, the sixth valve and the back pressure valve are sequentially arranged on the high-pressure pipeline between the air outlet and the gas-liquid separator, and the sixth valve and the back pressure valve are both positioned outside the high-low temperature constant;
the data acquisition system comprises an axial pressure sensor, a displacement sensor, a first pore pressure sensor, a second pore pressure sensor, an inlet pressure sensor, an outlet pressure sensor, a first temperature sensor, a second temperature sensor, a high-speed camera and a computer, wherein the axial pressure sensor is connected between a top cover and a piston of a longitudinal cavity of the high-pressure reaction kettle, the displacement sensor is connected with the piston, the first pore pressure sensor and the second pore pressure sensor are connected between a bottom cover and a piston of the longitudinal cavity of the high-pressure reaction kettle, the inlet pressure sensor is connected to a filter plate, the outlet pressure sensor is connected to the right side of a sand control screen in a transverse cavity of the high-pressure reaction kettle, the first temperature sensor and the second temperature sensor are connected between the bottom cover and the piston of the longitudinal cavity of the high-pressure reaction kettle, and the high-speed camera is arranged outside high-pressure visual glass, the axial pressure sensor, the displacement sensor, the first pore pressure sensor, the second pore pressure sensor, the inlet pressure sensor, the outlet pressure sensor, the first temperature sensor, the second temperature sensor and the high-speed camera are all connected into the computer through data acquisition signal lines.
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| CN201921667186.0U CN211201913U (en) | 2019-09-30 | 2019-09-30 | Device for evaluating hydrate production based on ultrasonic wave and sand control screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630229A (en) * | 2019-09-30 | 2019-12-31 | 中国地质大学（武汉） | Device and method for evaluating hydrate exploitation output based on ultrasonic waves and sand prevention screen |
| CN114250067A (en) * | 2021-12-22 | 2022-03-29 | 中国石油天然气集团有限公司 | Temporary plugging agent for natural gas hydrate drilling fluid and preparation method thereof |
| CN114965076A (en) * | 2022-05-16 | 2022-08-30 | 中国海洋大学 | Device and method for measuring microscopic deformation of sediment framework in seepage process of hydrate exploitation |
-
2019
- 2019-09-30 CN CN201921667186.0U patent/CN211201913U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630229A (en) * | 2019-09-30 | 2019-12-31 | 中国地质大学（武汉） | Device and method for evaluating hydrate exploitation output based on ultrasonic waves and sand prevention screen |
| CN110630229B (en) * | 2019-09-30 | 2024-06-14 | 中国地质大学（武汉） | Device and method for evaluating hydrate production based on ultrasonic waves and sand control screen |
| CN114250067A (en) * | 2021-12-22 | 2022-03-29 | 中国石油天然气集团有限公司 | Temporary plugging agent for natural gas hydrate drilling fluid and preparation method thereof |
| CN114965076A (en) * | 2022-05-16 | 2022-08-30 | 中国海洋大学 | Device and method for measuring microscopic deformation of sediment framework in seepage process of hydrate exploitation |
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