干旱区生态环境知识资源中心(Arid): Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China

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	Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China
	Zhu Shifa; Zhu Xiaomin; Niu Huapeng; Han Xuefang; Zhang Yueqian; You Xincai
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2012
卷号	86 期号:2 页码:447-461
英文摘要	The dolomitic rocks of the Fengcheng Formation are considered to be formed under special geologic conditions,and are significant hydrocarbon reservoir rocks in the Wu-Xia area in the Junggar Basin.Analyses of petrologic characteristics and stable isotope composition indicate that the dolomitizing host rock is volcanic and the dolomitizing fluids probably consists of brine from shore-shallow lakes with great evaporation and salinity in the Fengcheng Formation,which have formed under arid climatic conditions,as well as residual Mg-rich seawater from the underlying Jiamuhe Formation and Carboniferous.Dust tuff in the area has significant plagioclase content.Anorthite and labradorite hydrolysis by CO_2 can be coupled with calcite precipitation.Late Mg-rich brine percolated and replaced calcite formed in the early time,which lead to precipitate dolostones with different occurrences,such as graniphyric,random bedded or lumpy.The diagenetic dolostones with different occurrences resulting from particular formation conditions occurred in different tectonic settings.The dolomitizing fluid has been driven by the thermal convection flow generated by volcanic eruptions.At the same time,the overthrusts of the Wu-Xia growth fault have speeded up the flow of deep Mg-rich water upwards,and induced the water to quickly penetrate and horizontally migrate in the strata.Fracture is the major and the most important reservoir space in dolomitic reservoir of the Fengcheng Formation.Fracture and fault plays a decisive role in controlling the formation of dolostone and the distribution of favorable reservoirs.The deliverability of oil and gas is determined by the development and match relations of dissolved pores and fractures to a certain degree.
英文关键词	diagenetic dolostone volcanics fracture Fengcheng Formation Junggar basin
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Mineralogy
CSCD记录号	CSCD:4513133
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335138
作者单位	Zhu Shifa, College of Geosciences,China University of Petroleum (Beijing), State Key Laboratory of Petroleum Resource and Prospecting, Beijing 102249, China.; Zhu Xiaomin, College of Geosciences,China University of Petroleum (Beijing), State Key Laboratory of Petroleum Resource and Prospecting, Beijing 102249, China.; Niu Huapeng, College of Geosciences,China University of Petroleum (Beijing), State Key Laboratory of Petroleum Resource and Prospecting, Beijing 102249, China.; Han Xuefang, Tianjin Exploration and Development Research Institute,CNOOC, Tianjin 300452, China.; Zhang Yueqian, Research Institute of Petroleum Exploration and Development,Xinjiang Oilfield Company,CNPC, Karamay, Xinjiang 834000, China.; You Xincai, Research Institute of Petroleum Exploration and Development,Xinjiang Oilfield Company,CNPC, Karamay, Xinjiang 834000, China.
推荐引用方式 GB/T 7714	Zhu Shifa,Zhu Xiaomin,Niu Huapeng,et al. Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China[J],2012,86(2):447-461.
APA	Zhu Shifa,Zhu Xiaomin,Niu Huapeng,Han Xuefang,Zhang Yueqian,&You Xincai.(2012).Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China.Acta Geologica Sinica,86(2),447-461.
MLA	Zhu Shifa,et al."Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China".Acta Geologica Sinica 86.2(2012):447-461.