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OALib Journal期刊
ISSN: 2333-9721
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川中地区震旦系灯影组储层特征及物性影响因素
Keywords: 川中地区,灯影组,储层特征,物性,影响因素
Abstract:
？以钻井资料为基础，采用宏观和微观观测相结合的方法，从岩石学特征、储集空间类型及特征以及物性特征3方面，对川中地区震旦系灯影组储层特征进行研究，同时针对该区碳酸盐岩储层特点，从沉积相、成岩作用和构造作用3方面开展储层物性影响因素分析。研究结果表明，灯影组储层岩石类型主要为白云岩和角砾岩，储集空间主要为次生作用形成的孔、洞和缝，储层类型为低孔低渗的裂缝—孔隙型储层。储层的物性特征受沉积相、成岩作用和构造作用的影响，沉积相是储层形成的基础，物性在滩亚相中最好，并受其分布范围控制。成岩作用则决定了储层的储集性能好坏，其中压实作用、胶结作用、充填作用和硅化作用是破坏孔隙的主要成岩作用;重结晶作用是改善储层物性的重要原因;溶蚀作用储层形成的最关键成岩作用;构造作用形成的裂缝，极大地改善了储层的渗透能力。
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