Characteristics of a Coal Reservoir Pore-Fracture System and Favorable Reservoir Selection in the Kuba Coalfield, Xinjiang Province, China

ABSTRACT

The Kuba coalfield in Xinjiang Province is a new block for the development of coalbed methane in China, and in order to explore the resource potential the coal reservoir pore-fracture system characteristics need to be researched, and favorable reservoir selection needs to be carried out. To characterize the physical properties and the pore-fracture system of coal 4 sets of experiments and 2 technologies were performed. The results obtained in this study demonstrated that two coal seams in the Kuba coalfield, namely A₅ and A₇, are more favorable reservoirs compared with the other coal seams based on the perspective of pore-fractures, and these results provide a theoretical basis for coalbed methane development.

KEYWORDS:

• Coalbed methane
• coal reservoir
• pore-fracture system
• reservoir selection
• Kuba coalfield

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [41872147];the National Major Research Program for Science and Technology of China [2017ZX05064002];Doctor’s Fund of Henan Polytechnic University [B2017-66].