Micro-pilot test for optimized pre-extraction boreholes and enhanced coalbed methane recovery by injection of liquid carbon dioxide in the Sangshuping coal mine

• Hu WenXi'an University of Science and Technology
• Xiaojiao ChengXi'an University of Science and Technology
• Jian ChenHuainan Mining Industry Group (China)
• Chunru ZhangHuainan Mining Industry Group (China)
• Zhijin YuXi'an University of Science and Technology
• Zhenbao LiLanzhou University of Technology
• Shixing FanXi'an University of Science and Technology
• Gaoming WeiXi'an University of Science and Technology
• Bangkai ChengHuainan Mining Industry Group (China)