| 川中地区震旦系油气成藏过程的相态演化与勘探前景 |
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| 引用本文： | 袁海锋,徐国盛,王国芝,毛敏,梁家驹.川中地区震旦系油气成藏过程的相态演化与勘探前景[J].成都理工大学学报(自然科学版),2009,36(6). |
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| 作者姓名： | 袁海锋 徐国盛 王国芝 毛敏 梁家驹 |
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| 作者单位： | "油气藏地质及开发工程"国家重点实验室,成都理工大学,成都,610059 |
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| 基金项目： | 国家重点基础研究发展规划"973"项目 |
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| 摘 要： | 从川中地区震旦系油气成藏过程中相态变化的角度分析勘探前景.运用磷灰石裂变径迹和Easy Ro化学动力学模型联合计算了寒武系烃源层、震旦系储层所经历的热史和寒武系烃源岩的生烃史.寒武系烃源岩具有明显的二次生烃的特征,从而导致震旦系储层多期次的油气充注.震旦系储层的烃类流体相态因温度、压力的变化发生了从油→凝析油和湿气→油裂解成因的天然气→液态甲烷(水溶态)→气态甲烷等一系列的相态变化.其中对成藏具有重要意义的是,因温度变化导致油裂解为天然气过程中所形成的异常高压致使水溶气的形成,并因后来构造隆升所引起水溶气的脱溶过程.该区寒武系烃源岩生烃强度大,震旦系古构造的形成和发展与生烃过程配置较好,表明川中地区震旦系具有良好的勘探前景.
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| 关 键 词： | 川中地区 震旦系 水溶气 |
Phase evolution during hydrocarbon accumulation and exploration prospect for Sinian reservoirs in Central Sichuan Basin,China |
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| YUAN Hai-feng,XU Guo-sheng,WANG Guo-zhi,MAO Min,LIANG Jia-ju.Phase evolution during hydrocarbon accumulation and exploration prospect for Sinian reservoirs in Central Sichuan Basin,China[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2009,36(6). |
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| Authors: | YUAN Hai-feng XU Guo-sheng WANG Guo-zhi MAO Min LIANG Jia-ju |
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| Institution: | YUAN Hai-feng,XU Guo-sheng,WANG Guo-zhi,MAO Min,LIANG Jia-ju State Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu 610059,China |
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| Abstract: | This paper analyzes the exploration prospect of Sinian in the centre of Sichuan Basin from hydrocarbon accumulation history.The apatite fission track analysis and Easy Ro(vitrinite reflectance) chemical kinetic model are carried out to compute the thermal history of the Cambrian source rocks and Sinian reservoirs.The hydrocarbon generation history of the Cambrian source rocks indicates that secondary generating hydrocarbon has ever happened obviously.These events lead to multiple phase hydrocarbon fluid cha... |
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| Keywords: | Sichuan Basin Sinian water-soluble gas |
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