Automatic continuous testing device and method for coal and rock permeability under non-equilibrium state
A test device and permeability technology, which is applied in the direction of measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of reservoir permeability change, low permeability of sample matrix, and influence on gas production, etc. Achieve the effects of avoiding leakage, suitable for long-term continuous measurement, and ensuring control accuracy
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[0070] Example 1
[0071] The simulation test of gas injection into the reservoir includes the following steps:
[0072] ① Process the coal or rock sample into a cylinder with a diameter of 50mm and a height of 100mm, put it in a drying oven, and dry it for 24 hours; weigh the sample;
[0073] ②First put the sample into the holder 9 wrapped with the rubber sleeve 10, connect the pipeline to the axial plunger loading pump 1 and the annular plunger loading pump 2, check the displacement sensor 12, temperature sensor 11, pressure sensor I8, pressure The working status of sensor Ⅱ13;
[0074] ③Apply a pressure of 10MPa to the sample through the axial pressure plunger loading pump 1 and the ring pressure plunger loading pump 2, and check for leakage; set the constant temperature in the thermostat 15 to 25℃, and feed back the data to the data acquisition computer through the temperature sensor 11 16. Automatically adjust the temperature in the thermostat 15 through the data acquisition com...
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[0081] Example 2
[0082] The simulation test of the reservoir gas production process includes the following steps:
[0083] ① Process the coal or rock sample into a cylinder with a diameter of 50mm and a height of 100mm, put it in a drying oven, and dry it for 24 hours; weigh the sample;
[0084] ②First put the sample into the holder 9 wrapped with the rubber sleeve 10, and check the working status of the displacement sensor 12, temperature sensor 11, pressure sensor I8, and pressure sensor II13;
[0085] ③Apply a pressure of 10MPa to the sample through the axial pressure plunger loading pump 1 and the ring pressure plunger loading pump 2, and check for leakage; set the temperature in the constant temperature box 15 to 35℃, and feed back the data to the data acquisition computer through the temperature sensor 11 16. Automatically adjust the temperature in the thermostat 15 through the data acquisition computer 16 to ensure a constant temperature; close valve I4 and open valve II6. Af...
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