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Diagenetic Characteristics of the Chang 6 Oil-bearing Interval of the Upper Triassic in the Jin' an Oilfield, Ordos Basin
Author(s): LI Bin, MENG Zi-fang, LI Xiang-bo, LU Hong-xuan, ZHENG Min
Pages: 574-
583
Year: 2005
Issue:
4
Journal: ACTA SEDIMENTOLOGICA SINICA
Keyword: 鄂尔多斯盆地; 成岩作用; 碎屑岩; 储层; 浊沸石;
Abstract: 通过对5条剖面和11口探井的综合研究确定了长6储层的成岩作用阶段,对影响储层物性重要的自生矿物形成进行了探讨,认为靖安油田上三叠统延长组6段储层经历了压实、胶结、溶蚀等一系列复杂的成岩作用,成岩现象十分丰富,特征明显.从储层成岩作用研究表明,早成岩期的压实作用、多种矿物胶结作用是使储层物性变差、孔隙度降低的两个重要的成岩作用;而溶蚀作用,特别是浊沸石胶结的溶蚀是储层物性变好的重要成岩控制因素.
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