天然气扩散损失量估算方法及其应用

Estimating Method and Its Application of Natural Gas Divergence Loss

在深入研究天然气在地层岩石中的扩散机理的基础上，针对以往天然气扩散量估算中存在的问题，改进了天然气通过地层扩散散失的地质模型和数学模型，建立了一套天然气扩散损失量的估算方法，并将其应用于大庆长垣以东地区侏罗系天然气扩散损失量的估算中，结果较客观地反映了扩散作用在天然气聚集与保存中所起的重要作用，这充分表明该方法用于估算天然气扩散损失量是可行的，结果是可信的。

Based on studying gas diffusive mechanism deeply, to the problem of researches in the past,this paper improved the geological and mathematical medel of gas diffusion through strata, established a method for estimating gas diffusive flux, and then applied it in estimating the diffusive flux of gas from Jurassic system in Daqing placanticline and its eastens. The results objectly reflect the important effect of gas diffusion in gas accumulation and preservation. It indicates that the method is practicable to estimate gas diffusive flux and the result is believable.