准噶尔盆地丰城组特殊白云岩储层特征

Famu Huang, Yun Liu, Chenhao Pan, Duocai Wang, Ping Zhang, Yaping Fu, Hong Zhang, Haibo Su, Jun Lu, Zhi Zhong, Bin Wei
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引用次数: 0

摘要

准噶尔盆地二叠系丰城组白云岩和喷发岩发育,油气富集广泛。迄今为止,丰城组二段白云岩凝灰岩中已获得高产工业油气流,显示了块状白云岩凝灰岩厚层的巨大勘探潜力。本区凤城组二段岩性自东向西由白云岩、白云岩凝灰岩逐渐转变为粉砂岩。试井结果表明,该储层为油饱和储层,产量主要取决于储层物性和裂缝发育情况。通过岩心资料、测井资料、地震资料等不同类型资料的协同应用,对丰城组的沉积、构造、裂缝特征进行了刻画,进而对研究区有潜力的靶区进行了刻画。结果表明,乌夏断裂带深部油气聚集最多,将是下一步进一步勘探的有利带。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reservoir Characterization of Special Dolomite Rock of Fengcheng Formation in Junggar Basin, China
Dolomites and eruptive rocks are well-developed in the Permian Fengcheng Formation in Junggar Basin in China, in which oil and gas are accumulated extensively. Until now, high-yield industrial oil and gas flows have been obtained in the dolomitic tuff of the second unit of the Fengcheng Formation, which demonstrates the huge exploration potential of the thick layer of massive dolomitic tuff. The lithology of the second unit of the Fengcheng Formation in this area has gradually transformed from the dolomite, dolomitic tuff to siltstone from east to west. Moreover, the well testing shows that the reservoir is oil-saturated, and the production rate mainly depends on the reservoir’s physical properties and fracture development. In this study, different types of data including core data, well log and seismic data are used cooperatively to characterize the sedimentary, structure and fracture features of the Fengcheng Formation, and then characterize the promising target zone in the study area. The result indicates that hydrocarbons are most accumulated along the deep fault in the Wu-Xia fault zone, which will be the favorable zone for the next progressive exploration.
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