多层石油运移聚集模拟技术及应用

Simulation technique and its application on migration and accumulation of multiplayer oil.

引入了石油运移聚集的基本概念 ;论述了已发现油气藏的类型和空间分布规律 ;分析了影响和作用于其形成过程的基本地质因素和条件 ;提出了形成油气藏的四种成藏基本地质模型。在考虑油水两相流动的基础上 ,应用全国第二次资源评价结果及建立的相应数学模型 ,对惠民凹陷临南地区沙三段下亚段、沙三段上亚段、沙二段进行了两个双层结构油资源数值模拟试算。模拟结果与该区实际勘探结果在油藏位置上有较好的吻合。提出的数学模型数值解法准确、稳定 ,模拟时间达到 35 0 0× 10 4 a ,时间步长为 5 0 0～ 10 0 0a。

The basic concept of oil migration and accumulation is introduced; type and spac e distribution rule of the discovered oil-gas reservoirs are discussed; basic g e ological factors and conditions affecting and actting on its formation course ar e analyzed; and four kinds of basic reservoir-forming geologic models forming o i l-gas reservoirs are presented. And considering oil-water two phase flow, tria l calculation of numerical simulation on two dual structural oil resources is made for the lower Es_3, upper Es_3 and Es_2 of Linnan area in Huimin sag using t he sec ond nationwide resource evaluation results and the corresponding mathematical mo del. The simulation results tally better with the actual exploration results of this area on the oil reservoir position. Numerical solution of the proposed mat hematical model is accurate and stable. It's simulated time is up to 3500×10~4 a and time step-length is 500～1000a.