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| 鄂尔多斯盆地延长探区上古生界热演化史 | |
| 引用本文： | 于强,任战利,王宝江,高利军,李成福,曹红霞.鄂尔多斯盆地延长探区上古生界热演化史[J].地质论评,2012,58(2):303-308. |
| 作者姓名： | 于强 任战利 王宝江 高利军 李成福 曹红霞 |
| 作者单位： | 1. 西北大学地质学系大陆动力学国家重点实验室,西安,710069;陕西延长石油(集团)有限责任公司研究院,西安,710075 2. 西北大学地质学系大陆动力学国家重点实验室,西安,710069 3. 陕西延长石油(集团)有限责任公司研究院,西安,710075 4. 陕西延长石油油气勘探公司天然气勘探开发部,陕西延安,7160 |
| 基金项目： | 本文为国家重大专项项目(2008ZX05005004007HZ)资助的成果。 |
| 摘 要： | 通过试气静温资料,统计了延长探区上古生界各个主力含气层位的现今地层温度。通过地化资料指出该区上古生界烃源岩热演化程度达到成熟—过成熟阶段,采用经验公式法恢复了对应的最大古地温。采用将今论古方法探讨了该区各个时期的古地温梯度。在剥蚀厚度恢复的基础上,详细配置各个地层的岩性、物性、地化参数等指标,恢复了该区埋藏沉降史和热演化史。沉降史模拟表明:晚三叠世为该区沉降的主要发育时期。热演化史模拟表明:延长探区上古生界烃源岩在早侏罗世进入成熟阶段,晚侏罗世进入高成熟阶段,上古生界烃源岩主生烃期为晚侏罗世—早白垩世。 |
| 关 键 词： | 鄂尔多斯盆地 上古生界 天然气 热演化史 延长探区 |
Thermal Evolution History of the Upper Paleozoic in Yanchang Exploratory Area, Ordos Basin |
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| YU Qiang , REN Zhanli , WANG Baojiang , GAO Lijun , LI Chengfu , CAO Hongxia.Thermal Evolution History of the Upper Paleozoic in Yanchang Exploratory Area, Ordos Basin[J].Geological Review,2012,58(2):303-308. | |
| Authors: | YU Qiang REN Zhanli WANG Baojiang GAO Lijun LI Chengfu CAO Hongxia |
| Institution: | 1) State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, 710069; 2) Shaanxi Yanchang Petroleum (Group) Corporation Limited Research Institute, Xi’an, 710075; 3) Gas Exploration Division of Oil and Gas Exploitation Company, Shaanxi Yanchang Petroleum, Yan’an, Shaanxi, 716000 |
| Abstract: | With the analysis of the gas-testing data, the Upper Paleozoic reservoir temperature in Yanchang area has been calculated. Based on thermal evolution indicators and palaeogeothermal recovery, it is indicated that the Upper Paleozoic source rocks have reached the maturity stage and the over-maturity stage. The paleo-geothermal gradient in different period is discussed. The erosion thickness of the formation in this region was recovered. The thermal evolution history of Upper Paleozoic in Yanchang exploratory area has been reproduced. The main sedimentation period is Late Triassic(226～208Ma). The Upper Paleozoic source rocks reached the maturity stage in Early Jurassic and reached the high maturity stage in Late Jurassic. The main gas generation period of the Upper Paleozoic in Yanchang area is from Late Jurassic to Early Cretaceous. |
| Keywords: | Upper Paleozoic natural gas geothermal evolution history Yanchang area Ordos Basin |
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