Abstract:

The reservoir sedimentation models are classified into rift model and sag model, which are fully represented in the passive rifts and active rifts, only different in sedimentary cycles that the active rift is bi-model with single cycle and the passive rift is bi-model with multi-cycle. The lithological texture and reservation of reservoir has a good correspondence to rift-sag differentiation that the local reservoir with poor reservation is developed during rift and the regional reservoir with good reservation during sag.

Key words:

rift; sag; active rift; passive rift; reservoir sedimentation; rift basin

摘要：

裂谷盆地的储层沉积模式主要分为断陷式和坳陷式，他们的沉积分异无论是在主动裂谷或是被动裂谷中都有充分体现 ，区别只在于沉积旋回上的差异，主动裂谷储层沉积为双模式单旋回；被动裂谷储层沉积为双模式多旋回。并且，储集层的岩石学结构和储集物性与裂谷盆地的断—坳分异也有很好的对应关系，断陷期发育储集物性差的局部性储层，坳陷期发育储集物性好的区域性储层。

关键词: 断陷；坳陷；主动裂谷; 被动裂谷；储层沉积;裂谷盆地