CAJ | 학술논문

为了更好地对油气二次运移进行定量研究，探讨重建古水动力场方法。以压实为机制，建立了适用于深埋环境的上下供水的层流动方程，提出边界确定方法，采用盆地模拟技术，利用有限单元法求各地质时期古水头的数值解，重现古水动力场演化。以此为基础，可编制盆地各地质历史时期反映油气运移的油、气、水势等值线图，以此直观判断油气运移方向。应用这一方法，对四川盆地阳新统进行了以46个节点为基础的实际模拟评价，获得各地质历史时期油气聚集分区图，为优选勘探区带提供依据。
위료경호지대유기이차운이진행정량연구，탐토중건고수동력장방법。이압실위궤제，건립료괄용우심매배경적상하공수적층류동방정，제출변계학정방법，채용분지모의기술，이용유한단원법구각지질시기고수두적수치해，중현고수동력장연화。이차위기출，가편제분지각지질역사시기반영유기운이적유、기、수세등치선도，이차직관판단유기운이방향。응용저일방법，대사천분지양신통진행료이46개절점위기출적실제모의평개，획득각지질역사시기유기취집분구도，위우선감탐구대제공의거。
This paper uses the method of restoring paleo-hydrodynamic field to carry out a simulation and evaluation of Yangxin series in Sichuan Basin based on 46 nodes.A distribution map of oil and gas accumulation is obtained for different geologic periods,which provides an important evidence for optimizing some exploration plays.An embedded flow equation of the water supply is established for the up and low parts of some environments with larger burial depth,which may help determining boundary.Practically,the technology of basin simulation and the Finite-element method are adopted to calculate numerical solutions of paleo-waterhead during different geological periods and to reconstruct the evolution of paleo-hydrodynamic field.Finally,a contour map of oil,gas,and water potentials in different geologic periods reflecting oil and gas migration may be worked out.This process becomes an intuitive method to judge the migration direction of oil and gas.This paper presents and discusses a method to restore the paleo-hydrodynamic field in order to better implement a quantitative study on secondary migration of oil and gas.