断层岩排替压力间接预测方法改进  

IMPROVEMENT IN THE INDIRECT PREDICTING METHOD OF THE DISPLACING PRESSURE FOR THE FAULT ROCKS

作　　者：张超群[1] 付广[1] 于鹏[2] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]大庆油田有限责任公司第二采油厂,黑龙江大庆163414

出　　处：《大庆石油地质与开发》2014年第6期15-20,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家大型油气田及煤层气开发科技重大专项“大气田形成条件、成藏机制与富集规律研究”(2011ZX05007002)资助

摘　　要：断层岩排替压力对于研究盆地的油气聚集和保存非常重要.为了更准确地预测断层岩排替压力,引入了断层岩作用时间这一影响因素,改进了原有的间接预测方法.用新方法对岐口凹陷沙一段中部区域性盖层内板桥断裂的断层岩排替压力进行了预测,结果表明：改进后的断层岩排替压力值约为改进前的65％,明显小于改进前的值;结合板桥断裂的活动史分析认为,新方法预测的断层岩排替压力值更接近地下实际情况.The displacing pressure of fault rocks is very important for the studies on the hydrocarbon accumulation and preservation in a basin. In order to predict it more accurately, by means of introducing the influencing factor of the compaction and diagenesis time basis of the fault rocks, the original indirect predicting method is improved. With the help of the new method stated above, the fault-rock displacing pressure is predicted for the fault rocks in Banqiao Fault Belt within the regional cap rocks of Middle Member Es in Qikou Sag. The results show that the im- proved fault-rock displacing pressure value is about 65% of the former and significantly less than the value before the improvement; combining with the analysis of the active history of Banqiao Fault Belt, the fault-rock displacing pressure value predicted by the new method is more closer to the actual underground situation .

关 键 词：断层岩 排替压力 间接预测方法 压实成岩压力 压实成岩时间 破坏程度 

分 类 号：TE121.3[石油与天然气工程—油气勘探]