Determining forming period of restrained seal action of undercompacted concentration caprock by using interval travel time data and its research meaning
Fu Guang1, Wang Xintao1, Fang Chunchang2
1. Department of Petroleum Prospecting;
2. Daqing Petroleum Institute, Anda City, Heilongjiang Province 151400, China
Abstract：Forming of restrained seal action of undercompacted concentration caprock depends on forming of anomalous gas-bearing concentration and the later depends on forming of anomalous pore-fluid pressure.According to the relation, the start-stop period of forming of restrained seal action of undercompacted concentration caprock can be determined by using interval travel time data.The meaning that restrained seal action of undercompacted concentration caprock is in study of gas with seal expansion facies has been elaborated from the matching relation between forming period and period of vast amount of gas blow-off in gas source rock.Taking the shale caprock of Qingshankou Formation in Sanzhao depression of Songliao Basin for example,the paper proved that the method is practical.
付广, 王兴涛, 方纯昌. 利用声波时差资料研究欠压实浓度盖层抑制封闭作用形成时期及其研究意义[J]. 石油地球物理勘探, 2001, 36(3): 279-284.
Fu Guang, Wang Xintao, Fang Chunchang. Determining forming period of restrained seal action of undercompacted concentration caprock by using interval travel time data and its research meaning. OGP, 2001, 36(3): 279-284.
