论文部分内容阅读
烃类通过渗透性运载层发生长距离运移,在大多数油气田的形成过程中起着关键作用,但就定量意义而言,对油气二次运移的许多方面还了解甚少。由于多孔介质性质的空间变化及存在区域地下水流体系,非确定性的最重要来源之一是油气运移的三维特性。本文以数学模拟为手段,定量研究法国巴黎盆地渗透性的非均质性和区域地下水流对石油运移通道的影响。用地下水流和烃类运移的三维有限元模型定量评价渗透性Dogger组内的石油运移。定量研究结果表明,烃类是沿着一条曲折的通道穿过Dogger组的,这主要是由于岩石的渗透性和盆地水动力学的空间变化。对盆地内石油长距离运移的预测结果与观测到的石油运移方向进行了比较。
Hydrocarbons migrate long distances through the permeable bed and play a key role in the formation of most oil and gas fields, but in quantitative terms little is known about the many aspects of secondary oil and gas migration. Due to the spatial variation of porous media and the existence of regional groundwater flow systems, one of the most important sources of non-determinism is the three-dimensional nature of hydrocarbon migration. In this paper, we use mathematical simulation as a means to quantitatively study the influence of permeability heterogeneity and regional groundwater flow on petroleum migration path in the Paris basin, France. Quantitative Evaluation of Petroleum Transport Within a Permeable Dogger Formation Using Three-dimensional Finite Element Models of Groundwater Flow and Hydrocarbon Transport. The quantitative results show that the hydrocarbons traverse the Dogger Formation along a tortuous path, mainly due to the permeability of the rocks and the spatial dynamics of basin hydrodynamics. The prediction of the long-distance migration of petroleum in the basin is compared with the observed direction of petroleum migration.