白音查干凹陷桑合地区高分辨率层序地层研究

Sequence stratigraphy of high resolution of Sanghe Area, Baiyinchagan Depression

闫育英 赵希军 蔡军星

中原油田分公司勘探开发科学研究院，河南 濮阳 457001 中原石油勘探局地球物理测井公司，河南 濮阳457001

运用高分辨率层序地层学的原理和方法，在白音查干凹陷桑合油田识别出2种短期基准面旋回、5个完整的中期基准面旋回及7个旋回界面。对小级别的砂体和单砂层进行高分辨率等时划分和追踪对比，以提高储层预测的精度。同时对该区进行层序地层分析，从而建立层序地层模式，为下一步的地质勘探提供依据。

By using the theory of high resolution sequence stratigraphy, two short-term base level cycles, five complete medium-term base
level cycles and seven cycle interfaces are distinguished in Sanghe Oilfield of Baiyinchagan Depression. Then the high solution
isochronal division and tracing contrasts of small sandbodies and single sandbodies have been analyzed in this paper, which has an
important significance to improve the reservoir prediction. Through the analysis of sequence stratigraphy, the pattern of sequence
stratigraphy has been built up for this area, which provides the important basis for the geological exploration in future.