鄂尔多斯盆地中部气田沟槽识别新方法  

A NEW APPROACH OF IDENTIFYING GROOVES IN CENTRAL GAS FIELD IN THE ORDOS BASIN

作　　者：代金友[1] 史若珩[1] 何顺利[1] 

机构地区：[1]石油大学石油天然气工程学院

出　　处：《天然气工业》2006年第4期26-28,共3页Natural Gas Industry

摘　　要：鄂尔多斯盆地中部气田奥陶系碳酸盐岩风化壳储层具有显著的喀斯特地貌特征,在地表线状流水冲蚀作用下形成了独特的沟槽地貌景观。沟槽对天然气富集和生产影响很大,针对前人识别沟槽方法的不足,提出了以钻井、试井资料作为验证和约束条件,直接建立沟槽与地震属性之间关系,实现以地震属性分析为主导的沟槽综合识别新方法。实践表明该方法明显提高了沟槽识别精度,并对类似地区沟槽识别具有借鉴意义。Ordovician carbonate weathering crust reservoirs in the central gas field in the Ordos Basin are characterized by evident palaeokarst topography. Unique groove karst landscape has been formed due to the erosive action of surface linear flowing water. Grooves play a very important role in gas enrichment and production. In view of the shortcomings of previous identification methods of grooves, a new composite approach with seismic attribute analysis as its core is presented by directly correlating grooves with seismic attributes and by using drilling and test data as verification and constraints. Real application shows that it can remarkably improve the accuracy of groove identification and can be used as a reference for groove identification in similar areas.

关 键 词：鄂尔多斯盆地 气田 碳酸盐岩 风化壳 沟槽 识别 方法 

分 类 号：P618.13[天文地球—矿床学]