Results 61 to 70 of about 24,090 (252)

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

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

Potential for CO2 sequestration and enhanced coalbed methane production in the Netherlands [PDF]

, 2006
This study investigated the technical and economic feasibility of using CO2 for the enhanced production of coal bed methane (ECBM) in the Netherlands. This concept could lead to both CO2 storage by adsorbing CO2 in deep coal layers that are not suitable ...
Barzandji, O., Bergen, F. van, Bruining, H., Faaij, A.P.C., Hamelinck, C.N., Jansen, Daan, Pagnier, H., Ruijg, G.J., Schreurs, H., Wolf, K.-H.   +9 more
core   +1 more source

A semi-analytical model for flow regime diagnosis in multi-fractured horizontal wells within deep coalbed methane reservoirs

Journal of Petroleum Exploration and Production Technology
Since 2021, significant advances have been made in the exploitation of deep coalbed methane (CBM) in China, with peak gas production rates reaching over 100,000 m3/d from wells in the Ordos basin.
Chang-qing Liu, Zhao Yang, He-qing Chen, Guo-xiao Zhou, Yu Liang, Junyu Gu, Yu-qiang Wang, Cun-lei Li, Benju Lu, Shuai Feng, Jianan Wang   +10 more
semanticscholar   +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

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

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

Assessing connectivity between an overlying aquifer and a coal seam gas resource using methane isotopes, dissolved organic carbon and tritium [PDF]

, 2015
Coal seam gas (CSG) production can have an impact on groundwater quality and quantity in adjacent or overlying aquifers. To assess this impact we need to determine the background groundwater chemistry and to map geological pathways of hydraulic ...
A Green-Saxena, A Vengosh, BE Fontenot, BFJ Kelly, C Duvert, CD Keeling, CD Keeling, DDR Owen, DE Pataki, DL Valentine, DT Maher, E Dafny, ECP Kinnon, EG Nisbet, EJ Dlugokencky, G Antler, JA Hakala, JF Barker, JW Roy, K Knittel, MJ Whiticar, NG Phillips, P Quay, RB Jackson, RE Fisher, S Cuna, S Qin, SG Osborn, SK Hamilton, SK Hamilton, SL Papendick, TA Moore   +31 more
core   +1 more source

Mitigating Surface Tension Effects in Multi‐Coalbed Methane Reservoirs: Case Study of Liupanshui Field

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Water locking effect caused by surface tension severely restricts coalbed methane (CBM) productivity in multilayer reservoirs. The Songhe demonstration area features main target coal seams with overpressure, high gas content, and high gas saturation, presenting favorable CBM development conditions.
Zhu Liu, Yu Xiong, Shiliang Zhu, Zong Ren, Xiao Wang, Xixi Hao, Yun Feng, Mahmoud Ahmed   +7 more
wiley   +1 more source

Equipment configuration and process technology of hybrid oil-electric fracturing for deep coalbed methane [PDF]

Youqicang pingjia yu kaifa
In order to address the technical challenges in equipment configuration for hybrid oil-electric fracturing in deep coalbed methane reservoir modification, this study used the configuration of hybrid oil-electric fracturing equipment for deep coalbed ...
ZHAO Chongsheng, WANG Bo, GOU Bo, LUO Pengfei, CHEN Guojun, WU Guoquan
doaj   +3 more sources