海洋地质与第四纪地质2009，Vol.29Issue(5)：107-114,8.DOI:10.3724/SP.J.1140.2009.05107
涠西南凹陷C洼油气成藏体系
PETROLEUM ACCUMULATION SYSTEMS OF C SAE IN WEIXINAN DEPRESSION OF BEIBUWAN BASIN
摘要
Abstract
Under the guidance of petroleum accumulation system (PAS) theory and combined with the data of geology, geophysics and geochemistry, the basic geological conditions and characteristics of the PAS in C sag within the Weixinan depression have been analyzed systematically, and its model for hydrocarbon accumulation has also been set up in this paper. The results show that the mid-deep lacustrine mudstone of the second member of the Liushagang formation is the primary source rock in the PAS. Faults, unconfor-mitis and permeable sandstone layers constitute the hydrocarbon conduit system, in which vertical connectivities of faults and lateral permeabilities of unconformities are more important. Many kinds of structural traps, which match well with generation,expulsion,migration and accumulation of hydrocarbon are developed in this PAS. The favorable exploration objects in this PAS include traps (near C sag) accompanying with faults that connect source rocks with reservoirs and traps located in the Weixinan lower uplift with unconformities and connective permeable sandstone layers as effective conduit systems.关键词
成藏体系/成藏要素/输导体系/成藏模式/涠西南凹陷Key words
petroleum accumulation system/basic elements of hydrocarbon accumulation/conduit system/model of hydrocarbon accumulation/Weixinan depression分类
天文与地球科学引用本文复制引用
王修平,叶加仁,孙建峰,吴娟..涠西南凹陷C洼油气成藏体系[J].海洋地质与第四纪地质,2009,29(5):107-114,8.基金项目
国家科技重大专项(2008ZX0500-23-01)"近海富烃凹陷资源潜力再评价和新区、新领域勘探方向" （2008ZX0500-23-01）
中国石化上海海洋油气分公司科研项目"北部湾中石化区块重点凹陷油气成藏规律研究" （）
