DEVICE FOR MEASURING THE THERMAL CONDUCTIVITY OF ROCK UNDER THE SIMULTANEOUS INFLUENCE OF STEAM AND EXTERNAL PRESSURES Russian patent published in 2023 - IPC G01N3/18 G01N25/18 

FIELD: measuring technology.

SUBSTANCE: invention relates to devices for measuring the thermophysical properties of substances and can be used in geophysics to assess deep thermal fields by taking into account changes in the thermal conductivity of rock under the influence of pore and external pressures up to 100 MPa, temperatures up to 500 K and the nature of fluid saturation. The device consists of a cylindrical shell, a heater bottom, a refrigerator bottom, an electric heater, a refrigerator thermocouple, a heater thermocouple, gaskets made of plastic material, a tube for vacuuming and creating pore pressure in the sample and threaded studs. The bottom of the heater, the bottom of the refrigerator and the threaded studs are made of materials with similar values of the coefficient of thermal expansion. Threaded studs are made with the possibility of tightening by a controlled torque, which ensures the creation of an external rock pressure on the sample up to 100 MPa at a temperature from 200 to 500 K by its compression between the refrigerator and the heater.

EFFECT: increase in the accuracy of determining the thermal conductivity of a fluid-saturated porous sample, taking into account the influence of both internal and external pressure on it.

1 cl, 1 dwg