CAJ | 학술논문

在非常规吸附气藏开采过程中,随着地层压力的不断下降,吸附气解吸使吸附层体积变小,游离气空间增大。目前国内外均未考虑建立吸附层体积变化的物质平衡方程及研究吸附层体积变化、吸附层密度对估算吸附气藏储量的影响。本次研究首次考虑吸附层体积的变化,建立了新的物质平衡方程。通过实例分析验证了该方程的适用性和可靠性,同时认识到吸附层体积变化及吸附层密度对计算天然气储量有较大的影响。
재비상규흡부기장개채과정중,수착지층압력적불단하강,흡부기해흡사흡부층체적변소,유리기공간증대。목전국내외균미고필건립흡부층체적변화적물질평형방정급연구흡부층체적변화、흡부층밀도대고산흡부기장저량적영향。본차연구수차고필흡부층체적적변화,건립료신적물질평형방정。통과실례분석험증료해방정적괄용성화가고성,동시인식도흡부층체적변화급흡부층밀도대계산천연기저량유교대적영향。
During the exploitation process of unconventional adsorbed gas reservoirs,as formation pressure decreases,adsorbed gas will be desorbed and make adsorbed layer decrease and free gas space increase.At present,the material balance equation considering adsorbed layer volume variation has not been established and has not been applied to research the influence of adsorbed layer volume variation and density on adsorbed gas reservoir reserves.This paper firstly established new material balance equation considering the adsorbed layer volume variation.The application cases proved the applicability and reliability of this equation,and it is cognized that adsorbed layer volume variation and density have greater influence on natural gas reserves estimation.