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白豹油田长4+5成岩作用与储层分类评价

JIAO Chuang-yun, FU Wei,ZHAO Jun-xing, CHEN Ming-ying, CHE Ming, LI Zhi-wei, WANG Bin

JOURNAL OF CHENGDU UNIVERSITY OF TECHNOLOGY(SCIENCE & TECHNOLOGY EDITION)（2006）

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Abstract
在薄片、扫描电镜、压汞、阴极发光等研究基础上,对鄂尔多斯盆地白豹油田三叠系延长组长4+5砂岩的成岩作用和储层特征进行了分析研究.分析认为原始矿物组成和结构、早成岩期的机械压实作用和化学压溶作用、晚成岩期的铁方解石胶结作用等共同作用导致了研究区长4+5储层低孔低渗的特征.同时,根据18个压汞分析样品11个孔隙结构变量的聚类分析结果,对研究区长4+5储层进行了分类评价,指出白豹油田长4+5储层以低孔低渗的Ⅱ类储层为主,其次为特低孔特低渗的Ⅲ类储层.
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triassic yanchang formation,oilfieldordos basinchina,baibao oilfieldordos,reservoir classification
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