PERMEABILITY COEFFICIENT UNDER CHANGING THERMOBARIC CONDITIONS ON THE CORE SAMPLES DETERMINING METHOD Russian patent published in 2019 - IPC G01N33/24 G01N15/08 E21B49/00 

FIELD: measurement technology.

SUBSTANCE: invention relates to the field of the rocks physical properties studying and can be used in the oil fields development. Method consists in the fact that, saturated with kerosene with residual water core samples are installed in the filtration system core holder, establishing the predetermined thermobaric conditions, pumping out the kerosene in the volume of 3–4 pore volumes of the sample; in the mobile heating system with a sampler with an oil sample placed therein, establishing the thermobaric conditions similar to those established in the core holder, replacing the kerosene with oil by the mobile heating system connection to the filtration plant hydraulic circuit, determining the permeability coefficient, establishing the reservoir temperature, the reservoir pressure and the rock pressure, upgrading the plant by the sampler with the mobile heating system connection, into which placing the reservoir oil sample, before the filtration unit connection to the hydraulic circuit, stirring it by its swinging in the manual mode with temperature and pressure control in the sampler for the fluid maximum homogenization, recording the paraffins and asphaltenes solid phases formation process beginning by the sharp decrease in the permeability coefficient.

EFFECT: enabling increase in the determination reliability, with the possibility of approaching to the fields development real conditions.

3 cl, 3 dwg