DEVICE FOR PERMEABILITY PHASE DETERMINATION AND RELATED SATURATIONS OF SAMPLES OF MINERAL ROCKS Russian patent published in 2018 - IPC E21C39/00 

FIELD: measurement technology.

SUBSTANCE: invention relates to the field of study of phase permeabilities and corresponding saturations of oil and gas collectors by the method of material balance for solving various geophysical problems. Device contains a core holder with the test sample installed in it, a dry-air thermostat ensuring the maintenance of a constant temperature in the sample, recirculation pumps that provide the filtration process by supplying the sample fluids with the specified phase systems in the regime of a constant set flow rate. Crimping tool to create reservoir pressure on the sample. Pipeline system for supply and removal of working fluids, equipped with a shut-off valve, differential pressure gauge with pressure sensors to determine the pressure drop across the sample. Measuring separator consisting of a container for separating incoming fluids by the difference in their densities, equipped with a system for monitoring and measuring the interface level of media in the state of thermodynamic equilibrium. In this case, the pipeline system further comprises a bypass line for flushing the pipeline at the outlet of the core holder with a predetermined ratio of fluids to stop unaccounted changes in the working fluids therein. In addition, all of the above equipment, including the pipeline system with a bypass line, is placed in a single dry-air thermostat, forming a closed thermodynamic system with the exception of cooling of working fluids while their recycling during the filtration process.

EFFECT: improvement of the accuracy of measuring the relative phase permeability and saturation of core samples, as well as expanding the possibilities of varying the composition of fluid combinations during core tests using the method of stationary filtration.

1 cl, 1 dwg, 1 tbl