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通过我国41个大中型气田天然气扩散散失量计算和地质储量、含气面积及形成时期统计,对其扩散散失气速率、聚气速率和聚散气速率比值进行了研究,得到我国41个大中型气田天然气扩散散失气速率为0.2×106～49.5×106m3/km2Ma,平均为7.2×106m3/km2Ma,聚气速率为2.1×106～528.1×106m3/km2Ma,平均为79.4×106m3/km2Ma,聚散气速率比值为1.5～94.2,平均为14.5。通过我国41个大中型气田储量丰度与聚散气速率比值关系研究得到,二者为正比关系,聚散气速率比值越大,大中型气田储量丰度越高;反之则越低。我国要形成高储量丰度大中型气田的聚散气速率比值最小应大于4.1,中等储量丰度大中型气田形成的聚散气速率比值在4.1～2.3之间,低储量丰度大中型气田形成的聚散气速率比值应小于2.3。
Through the calculation of the natural gas diffusion loss and the statistics of geological reserves, gas-bearing area and formation period in 41 large and medium-sized gas fields in China, the ratio of diffusive loss gas velocity, gas velocity and gas dispersion rate was studied, and 41 medium- and large-sized The natural gas diffusion rate is 0.2 × 106 ~ 49.5 × 106m3 / km2Ma with an average of 7.2 × 106m3 / km2Ma and the gas velocity is 2.1 × 106 ~ 528.1 × 106m3 / km2Ma with an average of 79.4 × 106m3 / km2Ma. Rate ratio of 1.5 ~ 94.2, with an average of 14.5. Through the research on the relationship between the abundance of accumulative gas and the rate of accumulating gas in 41 large and medium-sized gas fields in our country, the ratio between them is directly proportional to each other. The larger the ratio of accumulative gas to gas, the higher the abundance of reserves in large and medium-sized gas fields, and vice versa. The ratio of polyglomeration gas velocity to large and medium-sized gas fields with high abundance and abundance in China should be at least 4.1. The ratio of polyglomeration gas velocity formed by large and medium-sized gas reservoirs with moderate reserves should be between 4.1 and 2.3. Large and medium gas fields with low abundance and abundance form The rate of poly diffusers should be less than 2.3.