An Experimental Method of Measuring Steam-Water and Air-Water Capillary Pressures

摘要

An experimental method was developed to measurernboth steam-water and air-water capillary pressures usingrnan X-ray CT technique. We conducted spontaneous waterrnimbibition and gravity drainage in ceramic core samplesrnfor steam-water and air-water systems respectively. Thernresults were compared, and it was found that the steamwaterrncapillary pressures were significantly less than thernair-water capillary pressures in both imbibition andrndrainage cases.