【摘要】 气藏烃类流体储存于地下的多孔介质中 ,部分烃类气体会吸附在多孔介质固体表面 ,从而会应影响气藏储量计算、气井产能计算、气藏开发动态分析等气藏工程计算的准确性。文章分析、研究了烃类气体在储层多孔介质表面上的吸附机理 ,应用F—HVSM模型 ,通过实例计算 ,得到了烃类气体混合物在储层多孔介质表面的吸附情况。研究表明 :烃类气体混合物在储层孔隙介质中的吸附量随温度的升高而减少 ,随压力的升高而增大 ;在同一孔隙介质中 ,当温度、压力相同时 ,重组分含量相对较高的烃类气体体系 ,其吸附量相应较大 ;对同一烃类气体体系而言 ,在相同的温度、压力下 ,孔隙介质渗透率越低 ,比表面越大 ,其吸附量也越大 ;烃类气体混合物在中、低渗储层多孔介质表面的吸附量的数量级为 10 -2 mol/kg。更多还原

【Abstract】 Hydrocarbons of gas reservoirs accumulate in underground porous media. Some gas hydrocarbons ad sorb on the solid surface of the porous media, which will in fluence the accuracy of reserve calculation, productivity cal culation and production performance analysis. The article an alyzes and studies the adsorption mechanism of gas hydrocar bon on the porous media surface of reservoirs. Using F-HVSM model, with real case calculation, the adsorption a-mount of gas hydrocarbon mixture on the porous media sur face of reservoirs is derived. The study shows the adsorption amount of gas hydrocarbon mixture on the porous media sur face of reservoirs decreases as temperature increases, and in creases as pressure increases. In the same porous media, when temperature and pressure keep constant, the higher the heavy component content of the gas hydrocarbon system, the bigger the adsorption amount. As for the same gas hydrocar bon, under the same temperature and pressure, the lower the permeability of the porous media is, the larger the specif ic area of the porous media is, and the bigger the adsorption amount is. The dimension of the adsorption amount of gas hydrocarbon mixture on the porous media surface of medi um/low permeable reservoirs is 10 -2 mol/kg.更多还原