DEVICE FOR DETERMINING THE THERMAL PROPERTIES OF SUBSTANCES unconsolidated

摘要

The invention relates to oil industry, particularly to methods of thermal development of a viscous oil and can be used to improve the accuracy of determining the thermal characteristics of the unconsolidated material, including rocks, as well as in the construction and food industries. The purpose of the utility model is to expand the functional possibilities of measurements, as well as improving the accuracy of determining the required characteristics of the test substances. Expansion of functional measurement capabilities achieved by the fact that the cavity with the sample to provide a change of action on it of hydrostatic pressure placed movable piston connected to a hydraulic press and a pressure gauge, the pore space of the sample is filled with liquid and to define and control of interstitial pressure in the sample cavity is connected another hydraulic press and a pressure gauge. Improving the accuracy of determining the thermal properties of the test sample is achieved by taking into account the heat losses from the outer surface of the electric heater to the environment, as well as the close contact of the sample with the inner surface of the containing chamber (matrix) by creating a uniform pressure on the sample and the use of liquid lubricant in the gap, and the electric heater is surrounded heat insulator to the housing, to accommodate the heat loss to the outer surface of the housing to the environment. In conclusion, it should be noted that the apparatus extends the functionality of the experiment and improves the accuracy of determining the thermal characteristics of the unconsolidated material, including rocks. This is caused by ensuring a tight contact between the test sample and the inner wall of the cylindrical chamber, as well as taking into account the heat losses from the outer surface of the electric heater. Thus, utility model allows to study the thermal properties of unconsolidated samples at modeling of them inclusive and interstitial pressure and temperature while improving the measurement accuracy. This technical solution makes it possible to obtain reliable data on the heat capacity, thermal conductivity and thermal diffusivity of species in terms of their occurrence in the formation, i.e., essentially determined by the thermal properties of the producing formation. It noted particularly important in the calculation of thermal methods of influence on oil reservoirs and to optimize the parameters of their development and to increase the oil recovery factor.