摘要
尽管目前对油气运聚的研究相对薄弱,但通过综述前人在这方面的研究成果,仍能从动力学角度获得对油气运聚成藏过程的深刻认识。油气在地下的运聚过程取决于运移动力与通道阻力间的相互关系。地层渗流空间的非均匀性是绝对的,在某一尺度空间认为是均匀的孔隙分布,在较低尺度上却表现为非均匀分布,反之亦然。因而,油气在地下的运移一般是沿阻力最小的优势通道进行的。在流体势中只考虑运移的动力并采用适合描述非均匀多相流动的方法,可以在油气运聚研究中把相关的输导层、裂隙通道、盖层等统一看待,油气运聚散过程在动力学上也有望统一。定量的流体动力学研究方法有助于认识和了解油气运聚散过程发生的机理和条件。
This is a review paper that presents our knowledge on hydrocarbon migration and accumulation. The process of hydrocarbons movement (migration or accumulation) depends largely on the relationship between migrating force of fluids and the resistance of pathway. The permeable spaces in rocks, that permit hydrocarbons move through them, are absolutely heterogeneous. A pathway that seems homogeneous in one scale presents usually heterogeneous characteristics in a small scale, and vice versa. Hydrocarbons migrate therefore alone some dominant migrating pathways. The various geological units, including carrier, faults and seals, may be considered in one model to characterize migration and accumulation processes, if were only the migrating forces, the buoyancy and/or hydraulic potential for example, taken into account in the fluid potential, and some methods that could efficiently describe heterogeneous multiphasic flows were used. Some quantitative research ways are necessary in studies on mechanisms and processes of hydrocarbon migration, accumulation, and losing.
出处
《天然气地球科学》
EI
CAS
CSCD
2003年第5期337-346,共10页
Natural Gas Geoscience
基金
受国家重点基础研究发展规划项目(编号:973-G1999043310)支助.
