Title: Diagenesis of Triassic reservoir in Wuxia area of Junggar Basin and its influencing factors
Abstract: The sandbodies of alluvial fan,fan delta and lake facies develop in Triassic reservoir in Wu-xia area of Junggar Basin.Their diagenesis is very complex because of the difference in their buried depth.The research of the diagenesis of the reservoir shows that the reservoir experiences compaction,cementation and dissolution,and at present,the diagenesis of the reservoir rock is in B-substage of eraly diagenesis and A-substage of middle diagenesis.The pore evolution of the reservoir is closely related with the reservoir diagenesis.In the early diagenesis,compaction and cementation are the main factors of destroying primary pores;in the A-substage of middle diagenesis,the organic acid produced by the maturation of organic matter makes the secondary pores develop,which improves the physical property of the reservoir;while in the late stage of dianenesis,the filling of authigenic cements makes the secondary pores be destruct.The study also shows that sedimentary environment,rock composition,the property of pore fluid and tectonic stress are the main factors of affecting the diagenesis of the reservoi.These factors also indirectly affect the pore development of the reservoir,which is important to the prediction of the property of the Triassic reservoir in the studied region.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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