Results 51 to 60 of about 4,868 (217)

Reservoir reconstruction technologies for coalbed methane recovery in deep and multiple seams

International Journal of Mining Science and Technology, 2017
Multiple coal seams widely develop in the deep Chinese coal-bearing strata. Ground in situ stress and coal seam gas pressure increase continuously with the increase of the mining depth, and coal and gas outburst disasters become increasingly severe.
Liang Wang, Shimin Liu, Yuanping Cheng, Guangzhi Yin, Dongming Zhang, Pinkun Guo   +5 more
openaire   +2 more sources

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

Energy Science &Engineering, Volume 14, Issue 3, Page 1339-1352, March 2026.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang, Xiang Fu, Yuedong Liu, Xiaoqiang Zhang, Yulong Jiang   +4 more
wiley   +1 more source

Gas-bearing evaluation of deep coal rock in the Yan’an gas field of the Ordos Basin

Frontiers in Earth Science
The Yan’an gas field in the Ordos Basin is a typical deep coalbed methane field with tremendous resource potential. Evaluation methods for gas content in deep coal seams are urgently required to be established.
Yongping Wan, Zhenchuan Wang, Dengping Hu, Ye Wang, Mengxia Huo, Xiaoyan Mu, Shuangbiao Han   +6 more
doaj   +1 more source

Environmental and Sustainability Assessment of Current and Prospective Status of Coal Bed Methane Production and Use in the European Union [PDF]

, 2016
The overall goal of this study is to support the Joint Research Centre (JRC) of the European Commission in assessing the environmental impacts and sustainability of energy sources in the EU.
ADLER Linus, CRISTOBAL GARCIA Jorge, KAVALOV Boyan, SCHULTZ Karl   +3 more
core   +1 more source

A study on Mechanical Seepage Characteristics of Coal‐Rock Mass Under the Combined Action of Multiple Factors

Safety Science and Technology, Volume 1, Issue 1, March 2026.
Schematic diagram of a triaxial fluid–solid coupling device based on the mapping function. ABSTRACT In deep coal mining, the influence of temperature–pressure coupling on the mechanical properties of coal is a crucial factor inducing dynamic disasters.
Musen Gao, Heng Ma, Xiaoqi Wang, Ke Gao
wiley   +1 more source

Anisotropic rock physics modeling and its application for deep coalbed methane reservoirs

Meitan xuebao
Rock physics modelling, as an important method to quantitatively characterize the properties of oil and gas reservoirs, is seldom applied to coalbed methane reservoirs, and most of the established rock physics models are targeted at shallow and medium ...
Fei GONG, Suping PENG, Jiwei CHENG, Guangui ZOU, Zhaoji ZHANG, Guowei WANG, Yi LIU   +6 more
doaj   +1 more source

INFLUENCE OF VERTICAL DEVIATORIC STRESS ON PERMEABILITY CHANGES IN COAL [PDF]

, 2014
Coalbed methane is becoming become an important component of the world\u27s natural gas resource. To date, researchers have mostly investigated the permeability changes due to non-linear elastic deformation caused by a matrix shrinkage associated with ...
Uddin, Sheikh S
core   +1 more source

Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells

Energy Science &Engineering, Volume 14, Issue 2, Page 854-865, February 2026.
Accounting for wellbore collapse debris and the bulldozer effect, this study develops models for permeable and impermeable sand bridge sticking in deep CBM horizontal wells, deriving resistance and volume formulations. Validated in Changqing, results show impermeable bridges dominate; controls (fluid optimization, staged drilling, circulation, speed ...
Cheng Hui, Yong Ouyang, Zhifeng Duan, Xiaoyue Xu, Yuxiang Teng, Mingyang Liu, Hui Zhang, Long Chen   +7 more
wiley   +1 more source

CONSTRAINING THE MEAN RESIDENCE TIME AND FLOWPATH OF GROUNDWATER THROUGH COAL SEAMS USING NOBLE GASES [PDF]

, 2018
Noble gases, specifically 4He concentrations, can be a useful tool for determining the rates of groundwater recharge, subsurface residence times, and groundwater flowpaths, especially in difficult to model complex formations such as fractured aquifers ...
Darland, Samuel
core  

Systems‐Level Optimization of Hybrid Produced Water Treatment Systems for Sustainable Oil and Gas Production: A Review of Current Technologies

Global Challenges, Volume 10, Issue 2, February 2026.
ABSTRACT Produced water (PW) is the largest and most complex waste stream generated during oil and gas production, posing significant environmental, operational, and regulatory challenges due to its high salinity, dispersed hydrocarbons, toxic organics, heavy metals, and naturally occurring radioactive materials. Although numerous studies have reviewed
Omogbolade L. Adepitan, Oluwaseyi O. Alabi, Charles Deigh, Oluwatoyin Joseph Gbadeyan   +3 more
wiley   +1 more source