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鄂尔多斯盆地榆林气田山二段沉积微相及砂体展布规律

Sedimentary microfacies and sandbody distribution rule of Member 2 of Shanxi Formation in the Yulin gas field,Ordos Basin,China

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【作者】 崔璀郑荣才张建武屈亚龙王昌勇

【Author】 CUI Cui1,ZHENG Rong-cai 1,ZHANG Jian-wu2,QU Ya-long2,WANG Chang-yong1 1.State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China; 2.Research Center of Ultra-low Permeability Reservoir of Changqing Oilfield,Xi’an 710018,China

【机构】 油气藏地质及开发工程国家重点实验室(成都理工大学)中国石油长庆油田分公司超低渗透油藏研究中心

【摘要】 为鄂尔多斯盆地榆林气田山西组第二段(山二段)气藏得到高效的开发,作者通过钻井岩心、测井、地震及分析测试资料,结合前人研究成果,确定榆林气田山二段属于海相辫状河三角洲沉积体系,气田处在三角洲平原-前缘亚相带,可识别出水上和水下分流河道、天然堤、决口扇、分流间湾或分流间沼泽及洪泛平原等微相;在沉积微相分析基础上,通过辫状河三角洲沉积模式和岩相古地理编图,揭示了鄂尔多斯榆林气田山二段的砂体展布。结果表明榆林气田山二段的水上和水下分流河道砂体最有利于储层发育。

【Abstract】 According to the comprehensive studies of well loggings,cores,seismic information and previous researches,the authors conclude that Member 2 of Lower Permian Shanxi Formation belongs to the marine facies braided-river delta system.The research area belongs to river delta plain-front subfacies belt.These micro-facies,including distributary channel,underwater distributary channel,crevasse splay,natural levee,interdistributary bay or interdistributary swamp and flood plain,can be identified in this belt.The typical braided river delta sedimentary model of Member 2 of Shanxi Formation in the Yulin gas field and the lithofacies paleogeographic map reveal the sandbody distribution of Member 2 Shanxi Formation in the Yulin gas field of Ordos Basin.The conclusion shows that the water and underwater distributary channel sandbodies of Member 2 of Shanxi Formation in the Yulin gas field are most favorable for the development of reservoirs.

【基金】 国家自然科学基金资助项目(41002033);国家科技重大专项(2011ZX05030-003-02)
  • 【文献出处】 成都理工大学学报(自然科学版) ,Journal of Chengdu University of Technology(Science & Technology Edition) , 编辑部邮箱 ,2013年01期
  • 【分类号】P618.13
  • 【被引频次】7
  • 【下载频次】386
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