关于裂谷盆地油气勘探的思考

Consideration on Oil and Gas Exploration in Rift Basin.

本文根据中国东部裂谷盆地的勘探实践,从三个不同层次分析了裂谷盆地的油气勘探思路和方法。不同演化阶段的裂谷盆地(裂谷期、裂谷后期、裂谷前期);不同构造区带断裂伴生背斜带、中央构造带、断阶带和斜坡带、洼陷带、披覆构造带);油气藏类型不同的(断层—断块、非背斜和岩性油气藏),具有相应的勘探思路和方法。

Based on exploration practice in rift basins in EastChina, this paper analyses oil and gas explorationmethod for rift basin in three aspects. Different explo-ration methods should be adopted for rift basins in dif-ferent evolution periods (rift period, late rift period andearly rift period). Oil and gas exploration in differentstructural belts of rift basin can be divided into five types:exploration of faulted associated anticline belt, explora-tion of fault bench zone and slope zone, exploration ofdepression and exploration of drape structural belt. Ex-ploration of rift basin can be also divided into three cate-gories according to different types of oil and gas reser-voirs: exploration of fault-faulted block oil and gas res-ervoir exploration of non-anticline oil and gas reservoirand exploration of lithologic oil and gas reservoir.