3.Nonsandstone reservoirs between salt beds of Qianjiang Formation in the Qianjiang Sag of the Jianghan Basin are mainly composed of dolomicrite,glauberite rock,mudstone and their peperite.
组成江汉盆潜江凹陷潜江组盐间段非砂储层的石主要为晶白云、钙芒硝、及其混积,孔渗性普遍较差。
4.And the boundary of them has the same lithologic character: the ravinement surface of river course or exposure mudstone of flooding plain and root clay.
二者的界面是相同的,均为河道砂体底部的冲刷侵蚀面或者是暴露过泛滥平原、根土等。
5.In the case of mudstone to be a source rock, the uncompacted mudstone would have a strong capability of hydrocarbon concentation sealing to seal gas in diffusive phase.