Abstract：Restrained by borehole number, coring, experiment cost and so on, people only use limited experimental data to analyse mud-caprock sealing ability, thus greatly influencing on accuracy of caprock evaluation. In order to get more informations of caprock sealing, we discuss how to use acoustic interval transit times to analyse the vertical and lateral variations of capillary sealing character in mud caprock, the pressure sealing ability and the formation age by analysing the capillary and pressure sealing mechanisms, and the important influence factors, and by determining the function relations between acoustic interval transit time and displacement pressure of mudstone, and between acoustic interval transit time and abnormal pore fluid pressure of mudstone. The method described in the paper offers the reliable basis for accurately evaluating mud-caprock sealing ability.
付广, 庞雄奇, 姜振学. 利用声波时差资料研究泥岩盖层封闭能力的方法[J]. 石油地球物理勘探, 1996, 31(4): 521-528.
Fu Guang, Pang Xionqi, Jiaug Zhenxue. Method for researching on use of interval transit times. OGP, 1996, 31(4): 521-528.
