Research status and thoughts for coal fines during CBM development

With the development of coalbed methane, the of coal fines has gradually become an important problem restricting the development of coalbed methane. Since the problem of coal fines has only been paid attention in recent years, the research on coal fines lacks systematic and scientific research ideas and methods. The research status of coal fines in CBM development was summarized and the research shortages on coal fines were pointed out from the aspects of hazard, formation mechanism, output rule and control measures of coal fines. A set of research ideas and methods of coal fines in CBM development, which were composed of theoretical basis, research contents, research methods and other core links, were proposed. The research ideas and methods:guided by multidisciplinary theories such as coalbed methane geology and development, coalfield geology, rock mechanics and fluid mechanics, and guided by the "Coalbed Methane Exploration and Development Specifications", "Coalbed Methane Well Monitoring Methods", "Testing and Analysis Technical Methods" and other relevant technical standards and specifications as the basis, based on the past years of coalbed methane geological data and coalbed methane drainage data, according to data collection, on-site monitoring and sampling, testing and data processing, physical simulation and numerical simulation, thematic mapping and Comprehensive analysis, technical equipment research and development, on-site engineering application workflow and methods, with the main research content of the influencing factors of coal fines production, coal fines production mechanism, coal fines production law and coal fines control measures, and select typical coal seams in the gas demonstration zone, a comprehensive and systematic re-search on coal fines were carried out to provide a guarantee for the efficient development of coalbed methane. The research ideas and methods provide a methodological basis for scientific research on coal fines issues.