盖层内断裂垂向封闭性定量评价新方法  

A new method for quantitative evaluation of vertical seal ability of faults in cap rock

作　　者：付广[1] 杨文敏[1] 雷琳[1] 侯建国[2] 申大媛[2] 

机构地区：[1]大庆石油学院,黑龙江大庆163318 [2]中油辽河油田公司,辽宁盘锦124010

出　　处：《特种油气藏》2009年第4期18-20,共3页Special Oil & Gas Reservoirs

基　　金：国家重点基础研究项目"天然气高效运移输导网络物理模拟及地质模式"(2001CB209104)资助

摘　　要：为定量研究盖层内断裂垂向封闭性,通过断裂带岩石与盖层岩石压实成岩所受压力大小的比较,利用盖层岩石排替压力和断裂对盖层封闭能力的破坏程度系数得到的断裂带内岩石排替压力,建立了一套盖层内垂向封闭性的定量评价方法。该方法可应用于含油气盆地盖层内断裂垂向封闭性的定量评价,在乌尔逊凹陷评价大一段盖层内主要断裂垂向封闭性的现场应用取得较好的效果。A quantitative evaluation method for vertical seal ability of faults in cap rock is established by using the displacement pressure of rock within fracture belt derived from the displacement pressure of cap rock and the coefficient of destructiveness of faulting on cap rock seal ability by comparing the pressures of diagenetic compaction in fault zone and cap rock. Field application of this method for evaluation of vertical seal ability of the major faults in K1d1 cap rock of in Wuerxun Depression has achieved good result.

关 键 词：盖层内断裂 断层垂向封闭性 定量评价 排替压力 破坏程度 乌尔逊凹陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]