地质统计地震反演方法及其在民丰断裂带封堵中的应用研究  

Study of seismic inversion by geologic statistics and its application in sealing action of Minfeng fault zone.

作　　者：史文东[1] 张立昌[2] 尹克敏[1] 孙海宁[1] 

机构地区：[1]胜利油田有限公司东辛采油厂 [2]胜利油田有限公司物探研究院

出　　处：《石油地球物理勘探》2002年第4期407-411,共5页Oil Geophysical Prospecting

摘　　要：断层既可作为油气运移的通道 ,又可对油气形成封堵。在砂岩含量丰富、靠近油源的复杂断块区 ,断层封堵区域的分析与界定使我们能直接划分由封堵形成的油气藏范围。这类区域以断层两侧岩性配置封堵模式为主。分析岩性对接配置的理想方法是根据断层两侧钻井资料确定断层面的岩性对接 ,实际上常因钻井资料少而使此法难以施行。在分析、比较多种测井约束地震反演方法后 ,我们找到一种反演结果可靠的地质统计反演方法 ,依此研究断层面岩性对接关系。将其应用到民丰断裂带封堵分析研究中 。The fault can not only be as migration channel of petroleum, but also can seal petroleum. The analysis and the determination of fault closed area can directly divide the scope of petroleum formed by sealing in a complicated fault block zone which is near oil sources and has abundant content of sandstone. The sealing patterns of the areas mainly are lithologic seals on both side of fault. The ideal method for analysis of lithologic juxtaposition is determination of lighologic juxtaposition of fault plane by drilling data on the both sides of fault. But in practice, due to lack of drilling data, the work is difficult to carry out. Comparing different well log constrained seismic inversion by analysis, we found inversion by geologic statistics to be the method that the result of inversion is reliable, which can obtain a rather ideal lithologic section, from which we can study the lithologic juxtaposition relation of fault plane and first applied it to study the sealing analysis of Minfeng fault zone.

关 键 词：地震反演方法 地质统计反演 断层封堵 岩性对接配置 地震属性 油气地质 

分 类 号：P618.13[天文地球—矿床学] P631.443[天文地球—地质学]