烃浓度盖层古异常含气浓度的恢复方法  

A METHOD RECOVERING ANCIENT ABNORMAL GAS-BEARING CONCENTRATION OF HYDROCARBON CONCENTRATION CAPROCK

作　　者：付广[1] 张发强[1] 

机构地区：[1]大庆石油学院，黑龙江安达151400

出　　处：《中国海上油气（地质）》1999年第6期429-433,共5页China Offshore Oil and Gas(Geology)

摘　　要：通过分析烃浓度盖层异常含气浓度的形成机制，建立了烃浓度盖层异常含气浓度与异常孔隙流体压力之间的函数关系，在利用声波时差资料恢复古异常孔隙流体压力的基础上，探讨了烃浓度盖层古异常含气浓度的恢复方法，并应用于松辽盆地汪家屯气田青山口组泥岩烃浓度盖层古异常含气浓度的恢复，其结果符合烃浓度盖层形成与演化规律，表明此方法是可行的。It is established that the quantitative relation between abnormal gas-bearing concentration and abnormal pore fluid pressure of hydrocarbon concentration caprock through analysing the formation mechanism of abnormal gas-bearing concentration of hydrocarbon concentration caprock. The method recovering ancient abnormal gas-bearing concentration of hydrocarbon concentration caprock using interval transit times is also established and applied in recovering the ancient abnormal gas-bearing concentration of mudstone caprock of Qingsankou formation in Wangjiatun gas field of Songliao Basin. The result is tally with the formation and evolution law of hydrocarbon concentration caprock. It indicates that the method is practical to recover the ancient abnormal gas-bearing concentration of hydrocarbon concentration caprock.

关 键 词：烃浓度盖层 古异常含气浓度 恢复方法 异常孔隙流体压力 声波时差 古异常孔隙流体 天然气藏 

分 类 号：P618.13[天文地球—矿床学] TE13[天文地球—地质学]