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| 鄂尔多斯盆地延长探区下古生界热演化史 | |
| 引用本文： | 于强,任战利,曹红霞.鄂尔多斯盆地延长探区下古生界热演化史[J].兰州大学学报(自然科学版),2011,47(5). |
| 作者姓名： | 于强 任战利 曹红霞 |
| 作者单位： | 1. 西北大学大陆动力学国家重点实验室地质学系,西安710069;陕西延长石油集团有限责任公司研究院,西安710075 2. 西北大学大陆动力学国家重点实验室地质学系,西安,710069 3. 陕西延长石油集团有限责任公司研究院,西安,710075 |
| 基金项目： | 国家科技重大专项基金资助项目(2008ZX05005-004-007HZ) |
| 摘 要： | 通过钻井和试气资料,统计了延长探区马家沟组现今地层温度.应用地化资料,对马家沟组烃源岩热演化程度进行了评价;应用多种古地温研究方法恢复该区最大古地温梯度;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(217～207Ma)为该区沉降的主要发育时期.热演化史模拟表明:延长探区马家沟组烃源岩在晚三叠世末期进入成熟阶段,晚侏罗世进入高成熟阶段,早白垩世达到过成熟干气阶段.下古生界烃源岩主生烃期为晚侏罗—早白垩世. |
| 关 键 词： | 下古生界 天然气 热演化史 延长探区 鄂尔多斯盆地 |
Thermal evolution history of the lower paleozoic in Yanchang exploratory area of Ordos basin |
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| YU Qiang,REN Zhan-li,CAO Hong-xia.Thermal evolution history of the lower paleozoic in Yanchang exploratory area of Ordos basin[J].Journal of Lanzhou University(Natural Science),2011,47(5). | |
| Authors: | YU Qiang REN Zhan-li CAO Hong-xia |
| Affiliation: | YU Qiang~(1,2),REN Zhan-li~1,CAO Hong-xia~2 1.Department of Geology,State Key Laboratory of Continental Dynamics,Northwest University,Xi'an 710069,China 2.Research Institute,Shaanxi Yanchang Petroleum(Group) Co Ltd,Xi'an 710075,China |
| Abstract: | With the analysis of the gas-testing data,the Majiagou formation temperature in Yanchang area was calculated,and with the thermal evolution indicators and palaeogeothermal recovery,the thermal evolution stages of lower paleozoic were assessed.The paleo-geothermal gradient in different periods was discussed and the erosion thickness of the formation in this region was recovered.The thermal evolution history of lower paleozoic in Yanchang exploratory area was reproduced,showing that the main sedimentation per... |
| Keywords: | lower paleozoic natural gas geothermal evolution history Yanchang area Ordos basin |
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