The Effects of Reservoir Temperature on Carbon Dioxide (CO2) and Nitrogen (N2) Gas Sorption in Enhanced Coal Bed Methane (ECBM) Production

Recently, the enhanced coal bed methane (ECBM) production has become the interest of many researchers especially for those who are related to the industry of energy. Over the
years, the implementation of this method has been able to stimulate the production of coal seams and able to unlock the potential of gaining the more hydrocarbon gas from the coal bed body. Many studies been done in relation to investigate on few factors that may affect the efficiency of the carbon dioxide (CO2) and nitrogen (N2) gases injection into the coal seams for better understanding on the method. One of the trends of study which is becoming the backbone this report is to understand on how does the temperature effects on the sorption behavior of CO2 and N2 with methane (CH4) gas at different reservoir temperatures, as sorption is a physical process which can be easily altered by the physical changes of the system. To answer this question, this report will present on the reservoir simulation study on the efficiency of CO2 and N2 to displace CH4 in the coal seam at different reservoir temperatures. In order to accomplish the objectives of the study, the study will be involving reservoir simulation on the production of ECBM at different coal bed reservoir temperature by using CMG’s GEM reservoir simulator. The report resulted in the comparison of the maximum adsorption capacity, rate of adsorption and the flood front shape of the ECBM of different gases at different reservoir temperature.