李卫成;牛小兵;梁晓伟;张艳梅;冯胜斌;马继业;

• 1:中国石油长庆油田分公司勘探开发研究院

• 2:低渗透油气田勘探开发国家工程实验室

摘要(Abstract)：

针对ML地区长81油层组砂体横向连续性差、纵向变化快、延伸方向预测困难等问题,根据沉积旋回将长81油层组细分为3个小层,选择小层内砂体连续厚度大、曲线幅度高的优势砂体作为研究对象,进行砂体展布精细预测.结果表明:地区共发育9支砂带,其中3支来自西部物源,其他来自西南部物源,单支砂带宽度一般为1~2km,砂体交汇处可达4~5km,砂带主体平均厚度为7~9m.不同时期各支砂带的分布范围和砂体规模不同,研究区东部砂厚大于4m的区域是勘探开发的有利区带,长831小层有利区面积最大.研究结果克服根据累计厚度进行砂体展布预测而放大有效砂层厚度、因沉积旋回的不对应而扩大砂体分布范围的不足,提高砂体预测的准确性;提供西部物源存在的重要证据,并落实了油藏规模;根据研究成果进行井位部署,目的层可直接精确到优势砂体有利区内,降低勘探部署风险.

关键词(KeyWords)：小层划分;优势砂体;砂体展布;井位部署;ML地区

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05044)

作者(Author):李卫成;牛小兵;梁晓伟;张艳梅;冯胜斌;马继业;

Email:

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