关键词: 河套盆地, 临河坳陷, 泥岩压实, 油气运移, 油气聚集

Abstract: In the Linhe depression,there are only 8 wells,distributed unevenly and with imperfection of logging data,so that velocity spectra,derived from seismic exploration are the principal data of this study Based on thesedata,compaction curves and surplus-pressuure curves are constructed and the distribution of subsurface fluid pressure and the condition of oil and gas migration and accumulation in this area are studied.Though the accuracy of the estimation by using velocity spectrum is less than that by using sonic-logging data,however,the conclusions remain to be valid generally.It provides a new practical and feasible method to study compaction and fluid migration in the condition of less namber of exploratory wells.