Study In The Developmental Characteristics And Tectonic Significance Of The Cracks In Yingmaili Area,North Tarim

The article is based on the theory of tectonic geology and petroleum geology,as well as the guidance of the principal theory and frontier technology of organic geochemistry and reservoir geology.By learning the previous research achievements,doing the comprehensive analysis of cores and well logging about ten wells,combining with the tectonic settings characteristics and the core observation,statistical crack feature and tectonic analysis,with the help of fluid inclusion and QGF analysis technical measure,it explains the characteristics of fractures and tectonic significances in Yingmaili area.The conclusions are as followings:1.According to its origin,the fractures of Yingmaili area is divided into two types:diagenetic fractures and tectonic fractures.And the tectonic fractures is divided into four phases as the time order of sequence.2.In Yingmaili area,as the different fluorescent color of hydrocarbon inclusions under ultraviolet light,the hydrocarbon inclusions can be divided into brown fluorescent ones,yellow fluorescent ones,blue fluorescent ones and black fluorescent ones and so on.These four kinds of hydrocarbon inclusions are divided into Ⅰ、Ⅱ、Ⅲ、Ⅳ four phases as the time order of sequence.3.The relationship between the inclusions and fractures in Yingmaili area is as followings:(1)the distribution of hydrocarbon inclusions in Yingmaili area is mainly controlled by tectonic fractures and less influenced by the reservoir lithology.Fractures was responsible for the path of fluid and storage space.(2)it has close relationship between the fracture development and the tectonic activity.Owing to multi-stage tectonic movements,four phase hydrocarbon inclusions match pretty well with four stage tectonic fractures in terms of relative time relation.