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在深入分析天然气发生分子扩散机理的基础上，指出天然气在地层孔隙中的扩散主要是填充在水分子间隙中那部分天然气分子的扩散，决定天然气发生扩散作用的是地层孔隙水中的间隙填充溶气浓度，而不是地层孔隙水中的总溶气浓度。低温条件下间隙填充溶气浓度小，天然气扩散作用弱，而高温条件下间隙填充溶气浓度大，天然气扩散作用强。利用地层孔隙水中的总溶气浓度研究天然气扩散，在低温条件下会相对夸大扩散量，在高温条件下则会相对低估扩散量。
Based on the in-depth analysis of the molecular diffusion mechanism of natural gas, it is pointed out that the diffusion of natural gas in the pore of the formation is mainly the diffusion of some natural gas molecules filled in the water molecular interstitial. The diffusion of natural gas determines the diffusion of gas in the formation pore water. Concentration, rather than the total dissolved gas concentration in formation pore water. Under low temperature, the concentration of dissolved gas in gap filling is small, the diffusion of natural gas is weak, while the concentration of dissolved gas in gap filling under high temperature is large, and the diffusion of natural gas is strong. Using the total dissolved gas concentration in the pore water of the formation to study the diffusion of natural gas, the amount of diffusion will be relatively exaggerated at low temperatures and the amount of diffusion will be relatively underestimated at high temperatures.