实测天然气扩散系数在地层条件下的校正

在研究天然气在地下岩石中扩散机理及扩散系数测试方法的基础上，指出了实测天然气扩散系数与地层条件下的差异，利用实测饱和水和干样条件下人造石英粉砂岩的扩散系数值的比值与其物性之间的关系，利用爱因斯坦方程产实测天然气扩散系数的饱和介质转换和温度校正方法，该方法的实际应用表明，校正结果符合地质规律，表明该校正方法是可行的。

CORRECTING OF GAS DIFFUSION COEFFICIENT TO SUBGR-OUND CONDITIONS AND ITS RESEARCH SIGNIFICANCE

Based on the study on the gas diffusion mechanism in subground rocks and the method measuring gas diffusion coefficient, This paper points out the difference between measured gas diffusion coefficient and that in the stratigraphic condition, by using the gas diffusion coefficients in the condition of no water and water saturated, established the relation between the ratio of the gas diffusion coefficients of man made quartz silt stone in no water saturated and in water condition, by this relation, this paper establishes the method of medium change to measured gas diffusion coefficient. By Einstein equation, this paper established the method of temperature correcting to measured gas diffusion coefficient. The applied results of this method indicate that it tallies with geological law and prove that it is practical.