层序地层学预测隐蔽油气藏的原理和方法

The Application of Sequence Stratigraphy to Subtle Trap Prediction:Its Principle and Method

运用层序地层学进行隐蔽油气藏预测是目前油气勘探的热门课题和重要的发展方向。本文以吐哈盆地SB地区侏罗系为例 ,探讨了层序地层学与隐蔽油气藏的关系。总结了运用层序地层学进行隐蔽油气藏预测的工作流程和研究思路。

Searching for subtle traps by means of sequence stratigraphy is a popular and significant research subject in hydrocarbon exploration . In this paper , the relationship between sequence stratigraphy and subtle traps is discussed in the case of fluviolacustrine depositional system within Jurassic of SB area, Turpan Hami basin, China. The research thought and flowchart for this purpose are summarized. Base_level circles and high_frequency sequences for the formations of Well TC2 were identified in the light of stratigraphic base_level principle proposed by T.A.Cross. The results are valuable in accurate correlation of sand layers and prediction of reservoirs in the study area. The three types of parasequence were distinguished, which are different from the concept of sequence stratigraphy initiated by P.R.Vail et al.