地层剥蚀对油气沿断裂渗滤散失影响的定量研究

Quantitative Research on the Influence of Strata Denudation to the Permeation Losing of Oil or Gas through a Fault

付　广,王朋岩,马福建

Fu Guang, Wang Pengyan, Ma Fujian

大庆石油学院

Daqing Petroleum Institute , Heilongjiang 151400 , P. R. China

在深入研究油气在地下沿断裂渗滤散失机理及影响因素的基础上,分析了地层剥蚀对油气沿断裂渗滤散失的影响,建立了地层剥蚀对油气沿断裂渗滤散失影响的地质模型和数学模型。模拟计算结果表明,地层剥蚀使油沿断裂渗滤散失量增大,而使气沿断裂渗滤散失量减小。这一结果符合影响油气沿断裂渗滤散失各因素随埋深的变化情况。

Based on studying deeply the permeation losing mechanism of oil or gas through a fault and its influence factors , the influence of strata denudation to the permeation losing of oil or gas through a fault is analyzed , and the geological and mathematical models for the influence of strata denudation to the permeation losing of oil or gas through a fault is established. The modeling calculation results indicated that strata denudation maks the permeation losing amount of oil through a fault to increaes , the permeation losing amount of gas through a fault to decrease. The results tally with the change of factors influencing the permeation losing amount of oil or gas through a fault vs. depth.