%0 Journal Article
%T The Effectiveness of the Continuous and Cyclic Method on CO<sub>2</sub>-ECBM
%A Theodora Noely Tambaria
%A Yuichi Sugai
%J Natural Resources
%P 69-81
%@ 2158-7086
%D 2024
%I Scientific Research Publishing
%R 10.4236/nr.2024.153006
%X This study examines the impact of different CO</span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">2</span></sub></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> injection methods on coalbed
methane recovery. Specifically, this study investigated the effectiveness of
contin</span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">uously
injecting CO</span></span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">2</span></sub></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> versus injecting CO</span></span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">2</span></sub></span><span><span style=\"font-family:&quot;\"><span style=\"font-family:Verdana;\"> that had been soaked for two weeks. The objective
was to ascertain which approach was more successful in enhancing CO</span><sub><span style=\"font-family:Verdana;\">2</span></sub><span style=\"font-family:Verdana;\"> Enhanced coalbed Methane (CO</span></span></span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">2</span></sub></span><span><span style=\"font-family:&quot;\"><span style=\"font-family:Verdana;\">-ECBM). The experiment involved injecting 3 MPa of
CH</span><sub><span style=\"font-family:Verdana;\">4</span></sub><span style=\"font-family:Verdana;\"> into dry coal samples, allowing it to adsorb until reaching
equilibrium, and then injecting 5 MPa of CO</span></span></span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">2</span></sub></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> to recover adsorbed CH</span></span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">4</span></sub></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">. The continuous method recovered CH</span></span><span style=\"font-family:Verdana;\"><sub><span style=\"font-family:Verdana;\">4</span></sub></span><span><span style=\"font-family:&quot;\"><span style=\"font-family:Verdana;\"> without detectable effluent concentration for 5
hours, but desorption efficiency was only 26% due to fast flow. On the other
hand, the desorption efficiency of the cyclic method was only 12%, indicating
trapped CH</span><sub><span style=\"font-family:Verdana;\">4</span></sub><span style=\"font-family:Verdana;\">.</span></span></span><span><span style=\"font-family:&quot;\"> </span></span><span><span
%K Coalbed Methane
%K CO&lt
%K sub&gt
%K 2&lt
%K /sub&gt
%K Injection
%K Desorption Efficiency
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=131755