页岩的矿物成分复杂、孔隙结构多样,导致页岩吸附性能差异大,同一储层中不同岩样的等温吸附曲线形态变化大,有必要针对页岩建立标准等温吸附曲线。对来自鄂尔多斯盆地长7油层组的页岩储层样品进行了低温液氮等温吸附实验,将实验所得曲...页岩的矿物成分复杂、孔隙结构多样,导致页岩吸附性能差异大,同一储层中不同岩样的等温吸附曲线形态变化大,有必要针对页岩建立标准等温吸附曲线。对来自鄂尔多斯盆地长7油层组的页岩储层样品进行了低温液氮等温吸附实验,将实验所得曲线进行初步标准化后按照BET理论中的常数C值取2为底的指数进行分类并标准化。再将所有样品的标准等温吸附曲线使用4种吸附层厚度方程在Matlab数值分析软件中进行参数拟合,用以验证标准等温吸附曲线。按拟合精度从小到大排列的4种吸附层厚度方程的顺序为:Carbon Black 2次方程<Carbon Black 3次方程<Halsey方程<De Bore方程。最后通过参数平均得出了每一类型的页岩标准等温吸附曲线。所得页岩储层的标准等温吸附曲线代表了一系列表面性质相似的储层的吸附特征,可直接用于油藏数值模拟或油藏工程计算,简化了大量的繁琐计算过程,降低了岩样随机选择所导致的数据不确定性,且使计算结果具有较强的代表性。展开更多
An experimental method was refered to measure the behaviour of coadsorption equi-librium properties in a zeolite-wet air system. With the use of the present method, theequilibrium properties of water vapor adsorption ...An experimental method was refered to measure the behaviour of coadsorption equi-librium properties in a zeolite-wet air system. With the use of the present method, theequilibrium properties of water vapor adsorption on synthetic zeolite 13X and natural zeolitewere determined at various temperatures from 15℃ to 300℃ and water vapor pressures inthe range 1423.1Pa-5758.9Pa. Based on adsorption theories, the Langmuir model was usedfor correlating the equilibrium data of the isothermic coadsorption for the two zeolites. Thecoadsorption equilibrium equations of the two zeolites were also developed. The LgP-1/Tequilibrium diagrams for the zeolites were computed using the Langmuir model. The resultsshow the calculated values fit fairly goog to well the experimental ones.展开更多
文摘页岩的矿物成分复杂、孔隙结构多样,导致页岩吸附性能差异大,同一储层中不同岩样的等温吸附曲线形态变化大,有必要针对页岩建立标准等温吸附曲线。对来自鄂尔多斯盆地长7油层组的页岩储层样品进行了低温液氮等温吸附实验,将实验所得曲线进行初步标准化后按照BET理论中的常数C值取2为底的指数进行分类并标准化。再将所有样品的标准等温吸附曲线使用4种吸附层厚度方程在Matlab数值分析软件中进行参数拟合,用以验证标准等温吸附曲线。按拟合精度从小到大排列的4种吸附层厚度方程的顺序为:Carbon Black 2次方程<Carbon Black 3次方程<Halsey方程<De Bore方程。最后通过参数平均得出了每一类型的页岩标准等温吸附曲线。所得页岩储层的标准等温吸附曲线代表了一系列表面性质相似的储层的吸附特征,可直接用于油藏数值模拟或油藏工程计算,简化了大量的繁琐计算过程,降低了岩样随机选择所导致的数据不确定性,且使计算结果具有较强的代表性。
文摘An experimental method was refered to measure the behaviour of coadsorption equi-librium properties in a zeolite-wet air system. With the use of the present method, theequilibrium properties of water vapor adsorption on synthetic zeolite 13X and natural zeolitewere determined at various temperatures from 15℃ to 300℃ and water vapor pressures inthe range 1423.1Pa-5758.9Pa. Based on adsorption theories, the Langmuir model was usedfor correlating the equilibrium data of the isothermic coadsorption for the two zeolites. Thecoadsorption equilibrium equations of the two zeolites were also developed. The LgP-1/Tequilibrium diagrams for the zeolites were computed using the Langmuir model. The resultsshow the calculated values fit fairly goog to well the experimental ones.