| 敏感性分析在烃源岩成熟度史模拟中的应用——以川东北地区普光5井古生界海相烃源岩为例 |
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| 引用本文： | 饶松,唐晓音,朱传庆,胡圣标,汪集旸.敏感性分析在烃源岩成熟度史模拟中的应用——以川东北地区普光5井古生界海相烃源岩为例[J].地质科学,2011,46(1):213-225. |
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| 作者姓名： | 饶松 唐晓音 朱传庆 胡圣标 汪集旸 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京 100029；2.中国科学院研究生院北京 100049 |
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| 基金项目： | 国家重点基础研究发展计划"973"项目，国家自然科学基金项目 |
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| 摘 要： | 通过分析输人模型的参数对输出结果的影响,可以确定影响烃源岩成熟度史模拟的敏感性参数.本文应用Easy% Ro化学动力学模型,以普光5井为例,对川东北地区各期构造运动剥蚀厚度、古地表温度和古地温梯度进行了相关的敏感性分析.分析结果表明:研究区下寒武统、下志留统、下二叠统和上二叠统烃源岩现今成熟度状态完全受控于燕山运动晚幕...
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| 关 键 词： | 敏感性分析 成熟度史模拟 剥蚀厚度 古地温梯度 剥蚀厚度 川东北地区 普光5井 |
| 收稿时间： | 2010-10-20 |
| 修稿时间： | 2010-11-22 |
The application of sensitivity analysis in the source rock maturity history simulation: An example from Palaeozoic marine source rock of uguang-5 well in the northeast of Sichuan Basin |
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| Rao Song,Tang Xiaoyin,Zhu Chuanqing,Hu Shengbiao,Wang Jiyang.The application of sensitivity analysis in the source rock maturity history simulation: An example from Palaeozoic marine source rock of uguang-5 well in the northeast of Sichuan Basin[J].Chinese Journal of Geology,2011,46(1):213-225. |
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| Authors: | Rao Song Tang Xiaoyin Zhu Chuanqing Hu Shengbiao Wang Jiyang |
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| Institution: | 1.State Kay Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences,Beijing 100029;2.The Graduate University of Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | By analyzing the influence of input model parameters to the output results，the sensitive parameters in the source rock maturity history simulation can be determined.In this paper，for example of Puguang 5 well，we carry out the sensitivity analysis of erosion thickness during tectonic movements，paleo surface temperature and paleo geothermal gradient in the maturity history simulation of the Palaeozoic marine source rock in the northeast of Sichuan Basin，using Easy％Ro chemical kinetic model.The analysis results showed that the present maturity of the Palaeozoic marine source rocks is fully controlled by the erosion thickness during Late Yanshan to Himalayan movement(since Late Cretaceous)，paleo surface temperature and paleo geothermal gradient during the late Early Cretaceous，while it is nothing to do with other factors.The Lower Cambrian source rocks maturity history simulation is affected by many geological parameters，including the paleo geothermal gradient and the paleo surface temperature during Hercynian，the erosion thickness during the Early Indosinian movement and the Late Yanshan to Himalayan movement and so on.The Lower Silurian source rock maturity history modeling is mainly affected by the paleo geothermal gradient during late Early Permian and Late Triassic in the study area.In compare with the Lower Cambrian and the Lower Silurian source rocks，the maturity history simulation of Lower Permian and Upper Permian source rocks have less affect on the uncertainty of denudation thickness of tectonic movements，the paleo surface temperature and the paleo geothermal gradient.Apart from the uncertainty of 10％ of paleo geothermal gradient during the Late Triassic，which results in a 16.4 Ma difference in the time when the Lower Permian source rocks comes into the late oil generation stage(Ro=1.3)； and the uncertainty of 50％ of erosion thickness during Late Yanshan to Himalayan movement，which made a 16.7 Ma difference in the time when the Upper Permian source rocks comes into the dry gas stage，the uncertainty of other geological parameter affects the maturity history simulation result of Lower Permian and Upper Permian source rock no more than 15 Ma. |
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| Keywords: | Sensitivity analysis Maturity history simulation Erosion thickness Paleo surface temperature Paleo geothermal gradient The northeast of Sichuan Basin Puguang 5 well |
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