成都理工大学学报（自然科学版）Issue(5)：546-552,7.DOI:10.3969/j.issn.1671-9727.2015.05.05
环湾论--鄂尔多斯盆地延长组深层石油成藏规律
Theory of surrounding bay:Petroleum accumulation regularity of deep level in Yanchang Formation,Ordos Basin,China
邵晓岩 1康志华 2白旭 3吴新伟 3张雁 3王高强 3杨国斌 3王碧涛3
作者信息
- 1. 成都理工大学 沉积地质研究院，成都 610059
- 2. 中国石油长庆油田分公司 第三采油厂，银川 750006
- 3. 中国石油长庆油田分公司 第三采油厂，银川 750006
- 折叠
摘要
Abstract
This paper discusses the hydrocarbon-generating potential of the dark mudstone in the lake bay area and the oil accumulation rule in the surrounding lake bay area of Triassic Yanchang Formation in Ordos Basin.Through analysing the hydrocarbon-generating index (TOC,S1 +S2 ,HI, chloroform bitumen “A”content,hydrocarbon content,kerogen type and maturity of organic matter) of the dark mudstone and the crude oil maturity and combined the development characteristics of the distributary channel sandstone with the contact relationship of mudstone,the obtained results show as follows.①The dark mudstone in lake bay area is a good-secondary hydrocarbon source rock,and can become hydrocarbon-generating kitchen.②The distributary channel sandrocks or lake bay sandbank sandstone extending into the lake bay area can be used as oil migration channels.③The sandrocks up-dip wedge out trap develops on the west side of the lake bay and the sandbank in the lake bay is a lenticular lithologic trap.④The laterally reservoired or the authigenically reservoired lithologic oil pools are formed when the mudstone migrates from the proximal of the lake bay to the lithologic trap. The research results extends the hydrocarbon-generating area and enlarges the oil exploration area of Yanchang Formation in Ordos Basin.关键词
鄂尔多斯盆地/延长组/烃源岩/湖湾/成藏规律Key words
Ordos Basin/Triassic Yanchang Formation/source rock/lake bay/hydrocarbon accumulation regularity分类
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邵晓岩,康志华,白旭,吴新伟,张雁,王高强,杨国斌,王碧涛..环湾论--鄂尔多斯盆地延长组深层石油成藏规律[J].成都理工大学学报（自然科学版）,2015,(5):546-552,7.
