Origin and significance of secondary porosity: A case study of upper Triassic tight sandstones of Yanchang Formation in Ordos basin, China

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• 作者：Wenchao Dou^a ; ^b ; Luofu Liu^a ; ^b ; ^{liulf@cup.edu.cn} ; Kangjun Wu^c ; Zhengjian Xu^a ; ^b ; Xu Feng^a ; ^b
• 关键词：Tight sandstones ; Yanchang Formation ; Ordos basin ; Secondary porosity
• 刊名：Journal of Petroleum Science and Engineering
• 出版年：2017
• 出版时间：20 January 2017
• 年：2017
• 卷：149
• 期：Complete
• 页码：485-496
• 全文大小：2159 K
• 卷排序：149

文摘

Meteoric water flushing may result in a net increase of porosity. Authigenic clay minerals contain a large amount of microporosity. At greater depths, secondary porosity may only represent porosity redistribution.