| 东濮凹陷石炭-二叠系煤系烃源岩生气演化及潜力分析 |
| |
| 引用本文： | 胡洪瑾,蒋有录,刘景东,慕小水,赵凯.东濮凹陷石炭-二叠系煤系烃源岩生气演化及潜力分析[J].地球科学,2018,43(2):610-621. |
| |
| 作者姓名： | 胡洪瑾 蒋有录 刘景东 慕小水 赵凯 |
| |
| 作者单位： | 1.中国石油大学地球科学与技术学院, 山东青岛 266580 |
| |
| 基金项目： | 国家"十三五"重大专项2016ZX05006-007 |
| |
| 摘 要： | 东濮凹陷石炭-二叠系煤系烃源岩的生烃演化时空差异性尚存在争议，烃源岩热演化生烃史的定量化研究仍有待进一步深入.利用热模拟实验和盆地模拟技术对烃源岩热演化生烃史进行了系统定量评价.煤系暗色泥岩、煤和碳质泥岩具有相似的生气模式，以Ro为0.5%、1.2%、2.2%、3.15%作为界限，将煤系烃源岩生气作用统一划分为5个阶段，其中主生气期门限Ro为2.2%，对应深度约为5 500 m；东濮凹陷石炭-二叠系源岩经历海西-印支期、喜山早期和喜山晚期三期成熟演化过程，其中古近纪沙一-东营期和新近纪明化镇中期-现今是主要生烃期，烃源岩演化普遍进入成熟-过成熟阶段；三期演化对应生烃贡献比例分别为9.28%、62.07%、28.64%，主力生烃范围集中在洼陷带及中央隆起带中部一带，煤生气贡献量最大、占68%.
|
| 关 键 词： | 热演化史 生烃史 潜力分析 石炭-二叠系 煤系烃源岩 东濮凹陷 天然气地质 |
| 收稿时间： | 2017-08-25 |
Gas Generation Evolution and Potential Analysis of Carboniferous-Permian Coal-Measured Source Rocks in Dongpu Depression |
| |
| Abstract: | The space-time difference of hydrocarbon generation and evolution of Carboniferous-Permian coal-measured source rocks in Dongpu depression has always been a dispute. In addition, the quantitative study of hydrocarbon generation history of source rocks remains to be further studied. In this study, the thermal evolution history of source rock was quantitatively evaluated by thermal simulation and basin simulation. It shows that similar gas generation model could be applied to coal-measured mudstone, coal and carbonaceous mudstone with Ro value of 0.5%, 1.2%, 2.2%, and 3.15%. Gas generation phase of source rocks could be divided into five stages. The Carboniferous-Permian source rocks in study area have experienced mature evolution periodically and the whole process of hydrocarbon generation occurring to the source rocks could be divided into three periods, which are the Hercynian-Indosinian epoch, the Early Himalayan epoch and the Late Himalaya epoch. However, the main gas generation periods are distributed from Late Paleogene Shahejie to Dongying period and Neogene Minghuazhen period to the present and thermal evolution of the source rock also entered into the mature-overmature stage meanwhile. The cumulative gas generation intensity was strongest in the Early Himalaya epoch, followed by the Late Himalayan epoch and the Hercynian-Indosinian epoch and the amount of gas generation during the three periods was 9.28%, 62.07%, 28.64% respectively. The main hydrocarbon generation areas are concentrated in the sag zone and in the middle of the central uplift zone, and the gas generation contribution of coal is the largest, accounting for 68% of the total. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
|
