CMG的AI客服给出的路径Coupling → Adsorption Swelling → Enable Permeability Correction为什么在builder里面找不到?在CO2ECBM建模过程中如何耦合吸附膨胀模型?
CO2竞争吸附可以参考自带算例GMSMO014.DAT,使用下述关键字进行表征,
*ADGMAXC ‘C1’ *MATRIX *CON 0.5000 ** gmol/kg of rock
*ADGMAXC ‘CO2’ *MATRIX *CON 1.0000 ** gmol/kg of rock
*ADGCSTC ‘C1’ *MATRIX *CON 2.000E-04 ** 1/kPa
*ADGCSTC ‘CO2’ *MATRIX *CON 5.000E-04 ** 1/kPa
*ADGMAXC ‘C1’ *FRACTURE *CON 0.0
*ADGMAXC ‘CO2’ *FRACTURE *CON 0.0
*ADGCSTC ‘C1’ *FRACTURE *CON 0.0
*ADGCSTC ‘CO2’ *FRACTURE *CON 0.0
*COAL-DIF-TIME ‘CO2’ *MATRIX *CON 100.0
*COAL-DIF-TIME ‘C1’ *MATRIX *CON 100.0
耦合渗透率模型的意思是吸附改变渗透率吗?
是的,煤层吸附二氧化碳引起煤基质膨胀导致渗透率下降。
The Palmer-Mansoori model accounts for both effects and allows for changes in porosity and absolute permeability to be calculated as a function of changes in fracture pressure and matrix shrinkage/swelling.
你可以在手册中搜索“COAL-SHRINKAGE-MODEL”,在解释部分,我找到了前面这句话,不过这里没有直接提及吸附导致的渗透率变化,你可以尝试一下。
