By comparing the numerical results of water infiltration with air and without air , it is shown that the method in this paper is more effective for solving problems of water infiltration in unsaturated soil . in this paper the forming process of oil - bearing basin is the main research object and the mathematic model of geology is built , in order to simulate the dynamic forming process of stratums especially oil - bearing stratum in geology history in the time and space concept , further to investigate the history of petroleum forming , transmitting , accumulating and predict the distributing rule and scope of petroleum , and offer an rapid , quantitative , exact , general choice for the researcher of petroleum geology . with denudation , poor - compactness and sedimentation hiatus , the stratum relations of sedimentation section is judged , and the ancient thickness and pressure of stratum layer are recovered by the inversion method of back stripping . the numerical simulation algorithm of recovery of geological history is also given 為了利用現(xiàn)代化的計(jì)算技術(shù)再現(xiàn)含油氣盆地的地史演化發(fā)育過程,以便進(jìn)一步定量化研究油氣的生成、運(yùn)移和聚集的歷史以及預(yù)測(cè)油氣分布規(guī)律、分布范圍,為石油地質(zhì)學(xué)家提供一個(gè)快速、準(zhǔn)確、定量、綜合的研究手段,本文就含油氣盆地的地史演化發(fā)育過程為主要研究對(duì)象,建立了數(shù)學(xué)地質(zhì)模型,運(yùn)用優(yōu)化理論與算法,在考慮了剝蝕、欠壓實(shí)、沉積間斷等地質(zhì)現(xiàn)象的情況下,采用回剝反演法,應(yīng)用鉆井、測(cè)井、地震等方法獲得的地層物性資料,判別沉積剖面中地層的接觸關(guān)系,恢復(fù)地層的古厚度、古壓力,構(gòu)造了地史恢復(fù)的數(shù)值模擬方法。