英语翻译Carbon dioxide (CO2) is considered to be one of the gree

英语翻译
Carbon dioxide (CO2) is considered to be one of the greenhouse gases that may contribute most to global warming on the earth.Dis¬posal of CO2 from stationary sources into subsurface structures has been suggested as a possible means for reducing CO2 emissions into the atmosphere.However,much remains to be done in the issues regarding the safety and reliability of CO2 geological sequestration.In this study,we have developed a simulation code by using the mathematical model of two phase flow in porous media to analyze the flow dynamics in the subsurface.The equation of state for CO2 covering the fluid region from the triple point to the supercritical region is employed to model the states of CO2 gas,liquid and supercritical state.The correct understanding of the CO2 state under the geological formation condition is an important factor to predict the injection pressure and CO2 fluid permeation because the fluid density has a great effect on the injection behavior.The numerical simulation was implemented under several geological conditions including gas,liquid and supercritical states to examine the optimal injection condition.Comparing the numerical results obtained using the equation of state for CO2 with those obtained using the ideal gas equation,it has been shown that the difference in the injection pressure appears to be significant near the condition of the critical point of CO2 and the phase equilibrium curves between the gas and liquid states.The numerical simulation has been implemented to examine the effect of the reservoir condition on the injection behavior.The injection pres¬sure is decreased at the lower reservoir temperature and higher hydrostatic pressure condition.The CO2 permeation is also strongly affected by the reservoir condition,and the spatial CO2 saturation becomes higher with increasing reservoir temperature.It has been demonstrated that the simulation code developed in this study may be useful to provide knowledge required to select the reservoir con¬dition for CO2 geological sequestration.

二氧化碳(CO2)被认为是造成温室效应的气体之一可能造成全球变暖的大部分在地上.posal之二氧化碳的;从固定源到地下结构已经被认为是一个可能的手段,为降低二氧化碳排放到大气中.然而,还有很多事情要做的事项的安全性、可靠性,二氧化碳地质封存.在本研究中,我们已经开发出一种模拟代码通过使用的数学模型在多孔介质中两相流流动动力学的基础上,分析了在地下.状态转移方程为CO2流体区域覆盖了从三指出超临界地区为研究对象,运用模型状态的二氧化碳气体、液体和超临界状态.正确的理解的CO2地质地层条件下在州是一个重要的因素来预测的注射压力和CO2高度层