Device intended for measurements on a porous sample in the presence of fluids, using temperature-resistant semipermeable membranes

摘要

Device intended for measurements on a porous rock bar in the presence of fluids including a containment cell comprising an elongate body (2) closed at the opposite ends thereof by end pieces (6, 7) and sources of pressurized fluids allowing displacement under pressure, within the sample, of a first wetting fluid and of a second fluid. One or more selectively wettable rigid membranes consisting each of a relatively thin layer of a porous ceramic on a support layer made from a porous material are pressed against the ends of the sample. The membranes can for example be made by sintering of metallic grains of unequal size (the grains are much coarser for the support layer). Such membranes have good resistance to high temperatures of the order of several hundred DEG C. Electrodes (E1) connected to a measuring device (24) are used to determine physical characteristics of the bar. The device can be used for oil reservoir engineering notably.