Determining the Starting Time of CO Injection and Its Implications for the CO-ECBM Process.

Determining the starting time of the CO injection is the key factor affecting the effect of CO injection and CH production. This study uses the Panyidong mine in the Huainan mining area as an example. First, fully coupled mathematical models are established.

Potential assessment of CO source/sink and its matching research during CCS process of deep unworkable seam.

It is of great significance for the engineering popularization of CO-ECBM technology to evaluate the potential of CCUS source and sink and study the matching of pipeline network of deep unworkable seam. In this study, the deep unworkable seam was taken as the research object. Firstly, the evaluation method of CO storage potential in deep unworkable seam was discussed.

Comprehensive Analysis of Connectivity and Permeability of a Pore-Fracture Structure in Low Permeability Seam of Huainan-Huaibei Coalfield.

The connectivity and permeability of the coal seam pore structures control the occurrence and migration of coalbed methane. Coal samples were used from Huainan-Huaibei to reconstruct three-dimensional models of the pores and an equivalent pore network model, Statistical pore structure characteristic parameters. The pore structure of the coal reservoir was analyzed from the direction of multidimensional and multiangle.