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Sedimentary characteristics and evolution of shallow-water delta of the Lower Cretaceous Fuyu reservoir rocks in the Yushulin Field, Songliao Basin
|Authors:||Li Yang; Zhu Xiaomin; Song Yingqi; Liu Fen; Li Chao|
|Author Affiliations:||Primary: |
China University of Petroleum, College of Earth Science, Beijing, China
Yushulin Oilfield Development Company, China
|Volume Title:||Gaoxiao Dizhi Xuebao Geological Journal of China Universities|
|Source:||Gaoxiao Dizhi Xuebao = Geological Journal of China Universities, 19(1), p.23-31. Publisher: Gai Kan Bianjibu, Nanjing, China. ISSN: 1006-7493|
|Note:||In Chinese with English summary. 13 refs.; illus., incl. 2 tables, sketch map|
|Summary:||The Yushulin Oilfield, located in the Sanzhao Depression of the Songliao Basin, developed large shallow-water deltas at the time when the Fuyu Reservoir deposited within the Member 4 of the Lower Cretaceous Quantou Formation. Based on 12 well cores and 2268 well loggings, by ways of single-well facies, logging facies, connecting-wells and plane sedimentary microfacies, well-developed shallow deltas were recognized in the study area in which can be further subdivided into delta plain, internal front, external front, predelta, and delta plain subfacies. Main sedimentary microfacies are plain distributary channel and internal front subaqueous distributary channel. These two types of channelized sandstone bodies interlaced into a network. During the early stage of the Member 3 of the Fuyu Reservoir, the studied area was dominated by shallow-water delta internal front subfacies which was sourced from north only. Later, the delta prograded towards south, and the studied area changed into delta plain subfacies. At the time of the third layer in the Member 3 of the Fuyu Reservoir, source from south appeared and intersected with the northern source. This sedimentary condition continued to the latest stage of the first mewber of the Fuyu Reservoir FI At the time of the third layer of the Member 1, both the northern and southern deltas retrograded due to the sudden rise of lake level. In the middle part of the studied area, delta internal front, external front, and predelta were developed in proper order.|
|Subjects:||Clastic rocks; Cretaceous; Deltaic environment; Depositional environment; Fluvial environment; Lower Cretaceous; Mesozoic; Microfacies; Oil and gas fields; Quantou Formation; Reservoir rocks; Sandstone; Sedimentary rocks; Stratigraphic traps; Traps; Asia; China; Far East; Heilongjiang China; Fuyu reservoir rocks; Sanzhao Depression; Yushulin Field|
|Coordinates:||N454129 N454129 E1265657 E1265657|
|Copyright Information:||GeoRef, Copyright 2021 American Geosciences Institute.|
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