Results 31 to 40 of about 218,589 (182)

Deformation Patterns and Rupture Mechanisms of the Longitudinal Valley Fault in Eastern Taiwan: Insights From Three‐Dimensional Discrete Element Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Active faults exhibit complex geometric features, with rupture processes controlled by the coupled effects of tectonic loading, fault geometry, and internal displacement heterogeneity. To elucidate the interrelationship between long‐term deformation, stress redistribution, and rupture evolution, we constructed a three‐dimensional numerical ...
X. F. Guo, Y. Aoki, J. H. Li
wiley   +1 more source

Design and Application of Fluid Pump Drainage Gas Recovery Technology in Dongsheng Gas Field

Shiyou jixie
To effectively address the bottleneck problems of high injection pressure and high energy consumption of hydraulic jet pump technology， it is urgent to improve and optimize the drainage gas recovery technology of high water-production gas wells.
Zhou Ruili, Luo Yi, Qiao Qianyu, Wu Weiran, Yang Feishan, Zhao Rundong, Xue Zhaoyang   +6 more
doaj   +1 more source

Permeability, Pore Throat Size, Meteoric Influx, and Biomass Control the Depth‐Distribution of Microbial Biosignatures in Sedimentary Basin Fluids

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract The few studies of modern or ancient subsurface microbial communities beyond ∼100 m depth limit our view into the vast and complex deep terrestrial biosphere. In sedimentary systems, growing isotopic and molecular data sets of fluids, co‐produced with hydrocarbons, provide an unprecedented opportunity to evaluate the depth‐distribution of ...
Jennifer McIntosh, Henrik Drake, Ji‐Hyun Kim, Anna Martini, Magdalena Osburn, Meera Shah, Bradley Stevenson, Grant Ferguson   +7 more
wiley   +1 more source

Analysis of factors affecting the productivity of coalbed methane wells in Houxia Basin, Xinjiang

Meikuang Anquan
The coalbed methane production of single-well varies widely and low in Houxia Basin, Xinjiang, indicating complexity control factors on the coalbed methane productivity. The statistical analysis, linear regression method and grey correlation mathematical
Peng LI, Xiaojun LI, Zhimin TU, Yanqian CHE, Xinlong CHANG, Teng LI   +5 more
doaj   +1 more source

Spatial Variations in Methane Content and Their Main Controlling Factors of the Deep‐Buried Coalbed in the Nalinhe–Hengshan Area, Ordos Basin

Energy Science &Engineering, Volume 14, Issue 7, Page 3422-3433, July 2026.
Ash yield is the primary geological factor controlling the spatial variations in the total gas content of the deep‐buried coalbed methane in the Nalinhe‐Hengshan area, Ordos Basin. However, porosity dominates the differential enrichment of the free gas content of the deep‐buried coalbed methane in the Nalinhe‐Hengshan area, Ordos Basin.
Shi Yunhe, Wang Kangle, Wang Huaichang, Wang Yufei, Zhang Hui, Cao Jingjing, Yin Liangliang, Hu Xinyou, Liang Chao, Liu Mina   +9 more
wiley   +1 more source

Coalbed Methane: Conventional Rules for an Unconventional Resource [PDF]

, 2004
Considering the evolution of coalbed methane development In North America, the authors highlight the risks involved at various stages of development.
Buckingham, Janice, Steele, Patricia
core   +1 more source

Geological factors affecting methane in the Beckley coalbed [PDF]

"This Bureau of Mines study reviews the geological factors that affect methane in the Beckley coalbed in southern West Virginia, including overburden, coalbed structure, type of and changes in lithology above and below the Beckley coalbed, and presence ...

core   +2 more sources

Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway

Energy Science &Engineering, Volume 14, Issue 6, Page 2752-2771, June 2026.
Based on deformation law of crossing layer drilling superimposed floor roadway, low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. ABSTRACT Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts.
Xiao Liu, Bo Li, Jiawei Xie, Xiaoming Ni, Shaoren Wei, Chengtao Yang, Yubo Zhang, Haixiao Lin, Wei Zhao, Tao Wang   +9 more
wiley   +1 more source

Experimental Investigation of Sensitivity for Coal and Gas Outburst Risk Prediction Indexes in Raw and Tectonic Composite Coal Seams

Energy Science &Engineering, Volume 14, Issue 6, Page 2772-2784, June 2026.
A comparative study was conducted on gas desorption laws of raw and tectonic coals. The sensitivity of regional and local outburst prediction indexes was compared. Gas content is more sensitive than gas pressure for composite coal seams. K1 can more accurately predict the outburst danger than Δ h 2 in composite coal seams.
Haijun Guo, Xi Xi, Kai Wang, Liang Wang, Yulin Li   +4 more
wiley   +1 more source

Method for determining the flowback rate of fracturing fluid considering gel degradation during hydraulic fracturing

Scientific Reports
Fracturing flowback plays a vital role in coalbed methane (CBM) reservoir development, but field flowback rates are still commonly selected based on operational experience and are therefore difficult to generalize across wells.
Chengming Ma, Zhaobing Hao, Fan Yang, Qi An, Hanlie Cheng, Linqiang Zhang, Zhiping Li   +6 more
doaj   +1 more source