Coalbed methane (CBM) is an important energy source globally, thus understanding its origin and evolution essential to the assessment of reserves developing exploration strategies. This study aims identify CBM in Liupanshui Coalfield (LPC) southern China evaluate influence basin exhumation on gas storage different rank coals. Ten samples were collected from four blocks that have thermal histori...

Coal bed methane (CBM) is generated primarily through the microbial degradation of coal. Despite a limited understanding of the microorganisms responsible for this process, there is significant interest in developing methods to stimulate additional methane production from CBM wells. Physical techniques including hydraulic fracture stimulation are commonly applied to CBM wells, however the effec...

Gas content is an important parameter for evaluating coalbed methane reservoirs, so it prerequisite resource evaluation and favorable area optimization to predict the gas accurately. To improve accuracy of CBM prediction, Bayesian hyper-parameter method (BO) introduced into random forest algorithm (RF) gradient boosting decision tree (GBDT) establish prediction models using well-logging data in...

Abstract Coal elastic parameters are an important index reflecting the material composition and porosity, which can be used to guide reservoir evaluation safe mining of coal coalbed methane (CBM). In this study, samples collected from seams #2, #3, #7 + 8, #9 in Yuwang colliery, eastern Yunnan, were studied, influences organic matter, ash content porosity on investigated. The results show that ...

Comprehensive assessments of the need for additional methane control capacity beyond ventilation often require both an empirical and theoretical approach for an adequate or timely control of increased methane emission levels. Thus, the prediction of methane emissions and optimization of methane control systems prior to starting a new mining operation will be a major improvement towards eliminat...

The current in situ stress regime is of great significance to the exploration and development coalbed methane (CBM). In this study, vertical (), maximum horizontal principal minimum () Liupanshui Coalfield were studied. Variations envelopes trend lines lateral pressure coefficient with depth obtained, non-monotonic decrease permeability burial was determined. On basis, effect on coal reservoir ...

This article forms pan of an ongoing study of the coal and coalbed methane resource potential of northwestern British Columbia. Other areas under study include the Bower basin coalfield, Telkwa coalfield and Tertiary coalfields of the Bulkley Valley. Tertiary sediments survive in many major watersheds in British Columbia. The sediments are generally not well consolidated, poorly exposed and the...