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Stratigraphy of the Yanchang group of southeastern Ordos Basin and its application to oilfield development
|Authors:||Wang Ping; Zhang Zhisheng; Meng Haifeng|
|Author Affiliations:||Primary: |
Chang'an University, College of Earth Science and Resources, Xi'an, China
Xingzichuan Oil Production Plant, Yanchang Oilfield, China
|Volume Title:||Dicengxue Zazhi Journal of Stratigraphy|
|Source:||Dicengxue Zazhi = Journal of Stratigraphy, 37(1), p.62-72. Publisher: Science Press, Beijing, China. ISSN: 0253-4959|
|Note:||In Chinese with English summary|
|Summary:||A century stratigraphic investigation of the oil-and gas-bearing Yanchang Formation in the Ordos Basin has generated numerous schemes of stratigraphic subdivision and correlation. For the purpose of oilfield development, the subdivision of oil-and gas-bearing sequence should be based on lithostratigraphy. The Yanchang Group includes sediments deposited in lacustrine and fluvial environments in the middle-late Triassic Period in the Ordos Basin. We propose that the oil-and gas-bearing sequence of the Yanchang Group can be subdivided into ten oil-and gas-bearing formations (Chang1-Chang10). Of these formations, the Chang-2 can be subdivided into three oil and gas-bearing members (Chang12-Chang32). The Chang-12 oil member can be further divided into three compound oil and gas-bearing layers and several single layers. The detailed stratigraphic study of the Chang-1112 oil member is a key to the oilfield development in the area.|
|Copyright Information:||GeoRef, Copyright 2021 American Geosciences Institute.|
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