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Middle Permian dolomite reservoir characteristics and evaluation in northwestern Sichuan basin
Author(s): 
Pages: 78-82,97
Year: Issue:  5
Journal: Petrochemical Industry Application

Keyword:  川西北中二叠统白云岩储层热液作用储层特征储层评价;
Abstract: 川西北地区中二叠统白云岩储层具有良好的勘探潜力,本文通过薄片的观察并结合野外露头和钻井剖面等资料,认识到中二叠统白云岩内储集空间主要为晶间孔、晶间溶孔、溶蚀孔洞以及热液破裂缝,主要发育白云岩溶蚀孔洞型储层,储层发育受热液地质作用控制,热液白云岩构成储层发育的基础,热液溶蚀作用形成缝孔洞,构成储层储渗空间,导致储层的形成.最终认为川西南地区是白云岩储层发育的最有利区域,川西中段是白云岩储层发育的有利区域,川西北段是白云岩储层发育的较有利区域.
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