Results 111 to 120 of about 6,445 (232)
Development of gas production type curves for coalbed methane reservoirs
, 2004 Coalbed methane is an unconventional gas resource that consists on methane production from the coal seams. The unique coal characteristic results in a dual-porosity system.
Garcia Arenas, Anangela
core +1 more source
Drilling a horizontal coalbed methane drainage system from a directional surface borehole [PDF]
"Three long horizontal holes were drilled from a directionally drilled surface hole at the Emerald Mine near Waynesburg, Pennsylvania. The purpose was to adapt the technique of directional drilling for use in draining methane from coalbeds.
core
Rotary drilling techniques used in the Beckley coalbed [PDF]
"The U.S. Bureau of Mines used a contact drilling strategy with short- collared assemblies in order to rotary drill long horizontal methane drainage holes in the Beckley coalbed near Glen Daniel, West Virginia. By decreasing the thrust and increasing the
core
Methane control for underground coal mines [PDF]
"Ventilation has long been the primary means of controlling methane emissions in underground coal mines. However, as mining has progressed into gassier areas of U.S.
core
Scientific ReportsMulti-seam combined production is crucial for enhancing single-well output in coalbed methane extraction. However, challenges persist in identifying the contribution of individual seams, predicting production capacity, and optimizing seam combinations ...
Li Wenjie +5 more
doaj +1 more source
The direct method of determining methane content of coalbeds for ventilation design
"The applicability of the "direct method" for determining the methane content of virgin coalbeds was tested. Preliminary results indicate that the direct method, when applied to exploration cores, can be successfully used to estimate coalbed gas content ...
core
Methane emission rate studies in a central Pennsylvania mine [PDF]
"A methane emission rate study was conducted in 1969 on a longwall section of a Lower Kittanning coalbed mine in central Pennsylvania . The longwall face was mined with a drum shearer between developed headings on the head end and headings on the tail ...
core
Fundamentals of coalbed methane reservoir engineering
This straightforward introduction to coalbed methane gives insight and detail to industry professionals involved with this unique energy resource. Author John Seidle reviews global and U.S.
Seidle, John
core
Steering the microbial ecosystem: how ethanol boosts coalbed methane output. [PDF]
AMB ExpressLi Y, Meng Y, Zhang H, Qiao M, Yang X.
europepmc +1 more source
Research on Optimization of Construction Parameters of Vertical Cross-Layer Fracturing in Thin Interbedded Coalbed Methane Reservoirs. [PDF]
ACS OmegaChen J, Zhu Y, Shao L, Liang L, Hu H.
europepmc +1 more source