金秋月;甘军;卢梅;何生;孙胜新;王静;高玉洁;

• 1:中海石油(中国)有限公司湛江分公司

• 2:中海油能源发展股份有限公司工程技术分公司中海油实验中心

• 3:中国地质大学资源学院

摘要(Abstract)：

统计地层实测压力数据,研究渤海湾盆地车镇凹陷始新统地层流体异常压力分布特征.结果表明:始新统沙河街组三段和沙四段地层流体发育异常高压,超压压力因数在1.20~1.78之间;平面上超压主要发育在凹陷中央部位;纵向上现今地层深度2 100m以上基本为常压,深度2 100m以下出现明显压力异常,主要分布于沙三段和沙四段地层.单井泥岩测井曲线特征显示,烃源岩生烃演化模拟和包裹体PVT模拟恢复最小,在超压层段声波时差偏离正常趋势线,表现为较高的声波时差值,密度测井曲线符合正常的压实规律;在两期油气充注时期,烃源岩热演化生成大量烃类流体,并以第二期生排烃活动为主,与地层流体超压阶段符合;第一期包裹体在常压环境捕获,第二期包裹体主要在超压环境捕获.始新统沙三段和沙四段地层流体超压主要由生烃作用引起.

关键词(KeyWords)：车镇凹陷;超压;成因;生烃;测井曲线;渤海湾盆地

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05006-002)

作者(Author):金秋月;甘军;卢梅;何生;孙胜新;王静;高玉洁;

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