武威盆地儿马湖凹陷构造演化与热史模拟

雒春雨; 宋立军; 杨浩; 史婵媛; 张欢

doi:10.19751/j.cnki.61-1149/p.2022.04.017

武威盆地儿马湖凹陷构造演化与热史模拟

雒春雨^1,2,
宋立军^1,2, ,,
杨浩³,
史婵媛⁴,
张欢^1,2

1. 西安石油大学地球科学与工程学院, 陕西西安 710065;
2. 陕西省油气成藏重点实验室, 陕西西安 710065;
3. 中国冶金地质总局中南局, 湖北武汉 430081;
4. 长庆油田分公司勘探开发研究院, 陕西西安 710018

基金项目:

西安石油大学研究生创新实践资助项目(YCS19112023)资助。

详细信息

作者简介:
雒春雨(1996-)，女，硕士研究生，主要从事盆地分析研究。E-mail:247378921@qq.com。

通讯作者:
宋立军(1977-)，男，博士，教授，主要从事盆地分析及模拟研究。E-mail:8210954@qq.com。

中图分类号: P542.1
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出版历程
- 收稿日期: 2021-05-11
- 修回日期: 2021-10-31
- 网络出版日期: 2023-01-09

Tectonic Evolution and Thermal History Simulation of Ermahu Sag, Wuwei Basin

1. School of Earth Science and Engineering, Xi'an Shiyou University, Xi'an 710065, Shaan Xi, China;
2. Shaanxi Provincial Key Laboratory of Oil and Gas Accumulation, Xi'an Shiyou University, Xi'an 710065, ShaanXi, China;
3. Central South Bureau, General Administration of Metallurgy and Geology of China, Wuhan 430081, Hubei, China;
4. Research Institute of Exploration and Development, Changqing Oilfield Company, Xi'an 710018, ShaanXi, China

摘要

摘要: 儿马湖凹陷位于武威盆地北部凹陷西部的一个次级构造单元，该凹陷石炭系煤系地层发育，有一定油气勘探潜力。笔者利用平衡剖面技术和盆地成藏模拟技术，对该地区的构造演化和热史进行了研究。研究揭示：①儿马湖凹陷为一个受多条北东向正断层控制发育的复式断陷；②该凹陷经历了4个阶段：石炭纪—二叠纪裂陷阶段、三叠纪—早中侏罗世抬升剥蚀阶段、晚侏罗世—白垩纪二次裂陷阶段和古近纪—新近纪—第四纪坳陷阶段。③儿马湖凹陷石炭系烃源岩热演化程度较高，二叠纪末期进入生油阶段，三叠纪末期已经进入生气阶段，现今整体处于高成熟-过成熟阶段。本研究对该凹陷、武威盆地及走廊盆地形成演化认识和油气勘探具有一定参考价值。
- 儿马湖凹陷 /
- 平衡剖面 /
- 构造特征 /
- 构造演化 /
- 热演化史模拟
Abstract: Ermahu depression is located in a secondary structural unit in the west of the northern depression of Wuwei Basin. The Carboniferous coal measure strata are developed in this depression, and there is a certain potential for CBM exploration. However, for a long time, the structural evolution process and the maturity history of organic matter in this depression have not been studied. In this paper, the structural evolution and thermal history of this area have been studied by using the balanced profile technique and reservoir forming simulation technique. The results show that:①Erma Lake depression is a compound fault depression controlled by several NE trending normal faults; ②The depression experienced four stages: Carboniferous-Permian rifting stage, Triassic-Early-Middle Jurassic uplifting and denudation stage, Late Jurassic-Early Cretaceous secondary rifting stage and Tertiary-Quaternary depression stage; ③The thermal evolution of the Carboniferous source rocks in the Ermahu Sag is relatively high. The Carboniferous source rocks entered the stage of oil generation at the end of Permian, and entered the stage of gas generation at the end of Triassic, and are currently in the stage of high maturity-over-maturity.
- Ermahu depression /
- balance profile restoration /
- structural characteristics /
- tectonic evolution /
- simulation of thermal evolution history

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