RESERVOIR POTENTIAL OF DEEP-WATER LACUSTRINE DELTA-FRONT SANDSTONES IN THE UPPER TRIASSIC YANCHANG FORMATION, WESTERN ORDOS BASIN, CHINA

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• 作者：Shengli Li ; Y. Zee Ma ; Xinghe Yu and Shunli Li
• 刊名：Journal of Petroleum Geology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：40
• 期：1
• 页码：105-118
• 全文大小：13034K
• ISSN：1747-5457

文摘

This paper investigates the reservoir characteristics of deep-water lacustrine-delta sandstones in the Upper Triassic Yanchang Formation in the western Ordos Basin, north-central China. The Yanchang Formation has previously been interpreted as a shallow-water lacustrine deltaic succession, and this interpretation has been used to guide petroleum exploration activities which have however met with only limited success. The present study integrates thin-section, wireline log, X-ray diffraction and SEM data from wells in the western Ordos Basin to determine the sedimentary and diagenetic characteristics of sandstones in the C6 and C4+5 sub-members of the Yanchang Formation, and to interpret the units' depositional environment.