Results 1 to 10 of about 6,679 (242)
Applied Sciences, 2018 Effective methods for extending the storage capacity of tailings for a mining company include expanding and increasing the height of the tailings dam. However, this change could lead to an uplift in the phreatic line and a decrease in the slope stability.
Chong Liu +5 more
doaj +2 more sources
SPE Middle East Oil and Gas Show and Conference, 2009 Abstract Chicontepec is associated to a submarine fan system deposited under complex tectono-stratigraphic conditions. Typically, between 8 and 16 major reservoirs are present. These set of reservoirs is composed of channel complexes that are flanked by, and rest on, lobe sandstones that grade into distal fan and basin floor deposits ...
Heron Gachuz-Muro
openaire +2 more sources
Meikuang Anquan, 2020 The effective pressure drop radius of coal reservoir should be enlarged as far as possible to improve the gas production of CBM well. By analyzing the complementary variation law of water production and gas production during the process of CBM well ...
HU Haiyang, ZHAO Lingyun, CHEN Jie
doaj +2 more sources
Geofluids, 2019 Injecting N2 to displace methane is an effective way to enhance coalbed methane drainage, and the influence radius of this process is an important factor in borehole arrangement.
Chen Li-wei +3 more
doaj +2 more sources
Determination of effective drainage radius in special high gas mines
Thermal Science and EngineeringThe effective drainage radius of coal seam is an important basis for the spacing of pre-drainage gas boreholes.To quickly and accurately determine the effective drainage radius, a new methodwasproposed.For thecoalface where the desorbable gas content before mining has met the standard, the compliance of mine gas drainage ratewas usedas the ...
openaire +3 more sources
Meikuang Anquan, 2021 In this paper, a gas roadway with multiple coal seams in southwest China is taken as the test site, and the separate-layer hydraulic fracturing and multilayers comprehensive hydraulic fracturing are carried out.
FENG Renjun
doaj +2 more sources
Gong-kuang zidonghua, 2018 Based on comprehensive consideration of gas flow inertia and slippage effect, a gas drainage flow model was established. Based on engineering background of 12150 coal face of the No.15 coal seam in Songhe Coal Mine, the distribution law of gas pressure ...
ZHANG Bo, XIE Xionggang, XU Shiqing
doaj +2 more sources
Double Unloading Gas Control Technology for Fracturing Soft Coal Seams in Overlying Key Strata
Applied SciencesBased on the ‘three highs and one low’ geological conditions of high gas pressure, high gas content, high ground stress, and low permeability in deep coal seams, this study proposes a dual method of hydraulic fracturing of key layers of overlying rock ...
Jun Xie +3 more
doaj +2 more sources
Energies, 2022 Exploring the evolution characteristics of gas seepage between boreholes during the drainage process is critical for the borehole’s layout and high-efficiency gas drainage.
Lei Zhang +4 more
doaj +2 more sources
Optimization and Application of Drilling Parameters Based on Gas–Solid Coupling Simulation
Applied SciencesThe layout of directional high-level long boreholes in fracture zones for extracting pressure-relieved gas from goaf is a key technology to address the gas concentration exceedance in upper corners.
Zhiguo Ge +6 more
doaj +2 more sources