SYSTEM AND METHOD FOR TESTING THERMOPHYSICAL PROPERTIES OF ROCK UNDER HIGH PRESSURE CONDITION IN DEEP SEA

摘要

A system for testing thermophysical properties of rock under a high pressure condition in deep sea, comprising two pressure resistant tanks (1, 2). A data acquisition unit (3) is mounted in the first pressure resistant tank (1); a cavity of the second pressure resistant tank (2) is filled with seawater and a rock sample (4) is mounted in the cavity; a first temperature sensor (61) and a second temperature sensor (62) are respectively mounted on the center and the outer surface of the rock sample (4); a third temperature sensor (63) and a pressure sensor (7) are mounted in the cavity; output ends of the first temperature sensor (61), the second temperature sensor (62), the third temperature sensor (63), and the pressure sensor (7) are all connected to input ends of the data acquisition unit (3) by means of watertight cables; a bleeder valve (21) in communication with the cavity is mounted on the second pressure resistant tank (2). Also disclosed is a method for testing thermophysical properties of rock under a high pressure condition in deep sea. By means of the method, without the use of an electrical heating heat source and a booster pump, instantaneous loading of a rock sample can be achieved by quickly opening a bleeder valve, and thermophysical properties of the rock sample under a high pressure condition are obtained by means of an established finite element numerical inversion model.