页岩有机质热演化生烃成孔及其甲烷吸附机理研究进展

发布时间：2018-02-23 19:18

本文关键词： 页岩干酪根生烃有机质孔隙吸附　出处：《中国科学:物理学力学天文学》2017年11期 　论文类型：期刊论文

【摘要】：对生物体形成干酪根过程、页岩干酪根生成油气机理、页岩有机质孔隙演化特征、有机质孔隙内气水分布特征进行了综述和评论.认为生物化学生气阶段通过细菌作用、缩聚作用形成干酪根,因干酪根脂族C-H键释放而形成脂族分子间孔;热催化生油气阶段通过热解聚作用形成沥青质、液态烃及剩余干酪根,此阶段沥青大量裂解为液态烃而形成边缘油孔(液化孔);热裂解生凝析气阶段,液态烃裂解为湿气,有机质孔隙以边缘(或内部)气孔为主;深部高温生气阶段转化为干气,此过程干酪根芳族C-H键释放,有机质孔隙以芳族分子间孔、气孔为主.同时,页岩干酪根热演化各阶段有机质孔隙内均有水的参与,表现出固-液界面作用.此工作以期为我国页岩气进一步勘探开发提供理论依据,也对页岩气产气规律的认识具有指导意义.
[Abstract]:In this paper, the process of organic kerogen formation, the mechanism of shale kerogen formation, the pore evolution characteristics of shale organic matter and the gas-water distribution in organic matter pores are summarized and reviewed. The condensation process forms kerogen, which is formed by the release of C-H bond of kerogen lipid group, and the formation of asphaltene, liquid hydrocarbon and residual kerogen by pyrolysis in the stage of thermal catalytic hydrocarbon generation. In this stage, bitumen was cracked into liquid hydrocarbon and formed edge oil pore (liquefaction pore); pyrolytic condensate gas stage, liquid hydrocarbon cracked into wet gas, organic matter pore was dominated by edge (or internal) pore, and deep high temperature gas stage was converted into dry gas. In this process, the aromatic C-H bond of kerogen is released, and the pores of organic matter are mainly aromolecular pores and pores. At the same time, water is involved in the pores of organic matter in all stages of the thermal evolution of shale kerogen. This work is expected to provide a theoretical basis for further exploration and development of shale gas in China, and also has a guiding significance to the understanding of gas production law of shale gas.
【作者单位】：中国石油大学石油工程教育部重点实验室;延长石油集团有限责任公司;中国石油化工股份有限公司东北油气分公司;
【基金】：国家自然科学基金(编号:51490650) 国家科技重大专项(编号:2016ZX05039);国家科技重大专项(编号:2016ZX05042)资助
【分类号】：P618.13

【相似文献】