Formation Conditions and Mechanism of Oil Reservoir in Maling Oilfield, Ordos Basin
详细信息
- 责任者：Liu Junfeng (Second Oil Production Plant of Changqing Oilfield Company ; Qingyang 745000 ; China) ; Duan Yi
- 刊名：Acta Sedimentologica Sinica
- 出版年：2011
- 卷期：29(2)
- 关键词：油气藏形成 ; reservoir formation ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.410-416
- 图表：7 illus., 2 tables, 7 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
Ordos Basin is a large inner continental sedimentary basin in China. The authors collected the crude oil samples from different regions of Maling oilfield and source rocks in the Ordos Basin, and analyzed biomarker compounds in the oils and source rocks. In this paper, the formation conditions of oil reservoir in Maling oilfield, such as source rock, reservoir rock,oil migration, traps and accumulation,were systematically studied, and its forming mechanism was discussed dynamically. The results show that crude oil of Maling oilfield was derived from the Yanchang Formation source rocks. Reservoir rocks are mainly the Low Jurassic Yanan Formation fluvial channel sandstones, while coal seam, carbonaceous mudstone and mudstone constituted the cap rock.