Abstract:

Ziniquanzi Formation of Paleocene is the main oil-bearing formation in Huomatu tectonic zone with various oil and gas phase and complex oil-gas-water relationship.  Oil and gas exploration and evaluation results show that the complexity of reservoir development is another important factor except for the complex tectonic deformation and style，which controlled the oil and gas accumulation and distribution of Huomatu tectonic zone in Southern Junggar fold-thrust belt.  This paper based on the study on the reservoir development and evolution of Ziniquanzi Formation，combination with its oil-water distribution rule，the relationship between the reservoir development and oil-gas distribution would be discussed from two respects that were the reservoir geometry shapes and internal properties. It is suggested that the reservoir architecture type of Zinicruanzi Formation was labyrinth with violent fades lateral change，whose single sand body thickness was small and the lateral continuities were medium or worse.  Reservoir sand bodies pinchout and properties deterioration often become oil-gas-water lateral barrier. In addition，large sets of mudstone interlayer would play a role in the segmentation of oil gas water relations，and the upper and lower different oil-water systems were formed，which resulted in the complexity of vertical oil and gas distribution.  Furthermore，the characteristics of reservoir porosity and permeability，and differences of hydrocarbon filling intensity in three anticlines of Huomatu tectonic zone were analyzed and comparedcomprehensively.  The coupling relationship between reservoir characteristics and hydrocarbon filling strength would he considered as an important factor which influenced reservoir phase and abundance.

Key words: reservoi development, oil-has-water relationship, controlling factor, Paleocene, Ziniquanzi Formation, Huomatu thectonic zone