东营凹陷小营油田沙二段砂体尖灭线地震描述技术  

Seismic description on reservoirs pinchout line of the second members of Shahejie formation in Xiaoying,Dongying Depression

作　　者：王志杰[1,2] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石化胜利油田分公司纯梁采油厂,山东滨州256504

出　　处：《石油地球物理勘探》2012年第2期305-308,185,共4页Oil Geophysical Prospecting

摘　　要：小营地区沙二段主要储层类型为三角洲前缘席状砂,单层厚度薄,横向变化大,准确确定砂体边界是决定滚动勘探效果的关键因素之一。针对该区地震资料分辨率低、砂体尖灭线难以落实的问题,在小层对比、钻测井资料统计分析的基础上,通过频谱成像、相位属性分析等技术对主力含油砂体尖灭线进行精细描述,并结合实际钻井展开地质综合评价,取得了良好的开发效果。The main reservoirs of second members of Shahejie formation in Xiaoying are delta front sheet sand.Because of thin layers and fast horizontal changes of sand,the determination of sand boundaries is the critical factor to succeed on the exploration.Aiming at the exploration difficulties of low resolution of seismic data and the indeterminacy of sand pinchout lines,this paper goes on the fine descriptions for the main oil-bearing sandstone pinchout line through the spectral imaging and phase attribute analysis on the basis of the substratum correlation and statistical analysis of drilling.And the comprehensive geological evaluation is undergone in conjunction with the actual drilling comments.Thus,the good development results are achieved.

关 键 词：沙二段 尖灭线 频谱成像 相位分析 

分 类 号：P631[天文地球—地质矿产勘探]