DEVICE FOR DETERMINING PHASE PERMEABILITIES Russian patent published in 2023 - IPC G01N15/08 

FIELD: oil and gas reservoirs.

SUBSTANCE: studying the phase permeability of oil and gas reservoirs. Device can be used to solve a large number of geofield problems, including the development of enhanced oil recovery technologies. The device comprises a core holder with a test sample installed in it, a thermostat that maintains a constant temperature in the test sample, plunger pumps for supplying working fluids to the test sample at reservoir pressure, a pump for creating crimp pressure, pipelines for supplying and removing working fluids with valves, a counterpressure regulator, containers with working fluids, a volumetric flask for measuring the level of liquid at the outlet of the core holder, pressure sensors, a differential pressure gauge for measuring the pressure drop on the test sample and a gas cylinder, an intermediate gas tank with a piston connected to a pipeline for supplying working fluids for supply water from the plunger pump and with the gas supply pipeline, a check valve installed between the gas supply pipeline and the connection of pipelines for supplying working fluids from the plunger pumps. The device allows uniform supply of all phases in specified ratios, providing greater flow stability and increasing the accuracy of determining phase permeabilities in three-phase filtration of oil, water and gas.

EFFECT: increased the accuracy of measuring the relative phase permeability in the process of conducting filtration experiments and expanding the study area in the operating pressure range.

1 cl, 1 dwg