Results 41 to 50 of about 588,838 (198)

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

Appraising Carbon Geological‐Storage Potential in Saline Aquifers Using Two‐Phase Rate‐Transient Analysis

Water Resources Research, Volume 62, Issue 4, April 2026.
Abstract Rate transient analysis (RTA) is a practical and cost‐effective method for CO2 injection data analysis and storage capacity evaluation of saline aquifers. However, the nonlinear behavior introduced by two‐phase CO2–brine flow, coupled with pressure‐dependent fluid and rock properties, significantly limits the applicability of conventional ...
Zhenhua Rui, Qiang Zhang, Fengyuan Zhang, Hamid Emami‐Meybodi   +3 more
wiley   +1 more source

Adjustment countermeasures for efficient development of deep coalbed methane in southern Yanchuan CBM Field

Youqicang pingjia yu kaifa, 2022
The deep underground place in China is rich in coalbed methane resources, so that it is an important field of further exploration and development of coalbed methane.
YAO Hongsheng, XIAO Cui, CHEN Zhenlong, GUO Tao, LI Xin   +4 more
doaj  

Research on the Application of Double-Tube Gas Lift Drainage Recovery in Coalbed Methane Wells: A Case Study of the Hancheng Block, China

Lithosphere, 2022
The key point in coalbed methane (CBM) wells is to pump out the confined water to produce gas. Traditional drainage coalbed methane recovery methods have different limitations and characteristics. A new drainage gas recovery method called double-tube gas
Chen Li, Yongsheng An, Yanning Yang, Wenbo Jiang, Long Peng   +4 more
doaj   +1 more source

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

Numerical Investigation of the Influence of Wave Pressure Amplitude and Frequency on Fracture Morphology Induced by Supercritical CO2 Fracturing

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
The mechanisms whereby various parameters influence the evolution of the induced fracture geometry during pulse supercritical CO2 fracturing (PSCF) were explored through numerical simulations. A novel quantitative index of the induced fractures, termed the “matching degree” (MD), was proposed, and a theoretical framework based on the rock‐bonded ...
Peihuo Peng, Yong Pan
wiley   +1 more source

Exploration of integrated technology for deep coalbed methane drainage in full life cycle: A case study of Daning‒Jixian Block

, 2022
The first deep coalbed methane (CBM) field with a depth of more than 2 000 meters in China has been proven in Daning‒Jixian Block on the eastern margin of Ordos Basin, where the deep coal bed has the characteristics of large buried depth, high pressure ...
Yinhua, LIU, Kang, ZHANG, Qian, WANG, Wenting, ZENG, Tengze, GE, Lizhu, YU, Bin, PANG   +6 more
core   +1 more source

Precise Definition and Quantitative Assessment of Ineffective Boreholes in Coalbed Methane Drainage

Energies
The efficiency of gas extraction in coalbed methane extraction is governed by coal seam permeability and borehole structural integrity. Over prolonged extraction, some boreholes become ineffective owing to degraded performance, necessitating precise identification criteria.
Ying Han, Feifan Shan, Feiyan Zhang, Chen Niu, Qingchao Li   +4 more
openaire   +1 more source

Analysis of productivity differences in vertical coalbed methane wells in the Shizhuangnan Block, Southern Qinshui Basin, and their influencing factors

Energy Exploration & Exploitation, 2020
Coalbed methane wells in the Shizhuangnan Block exhibit significant productivity differences. The reasons were determined based on the impact analysis of geological factors and drainage strategies on production capacity at 82 wells.
Xinlu Yan, Shuheng Tang, Songhang Zhang, Yongxiang Yi, Feng Dang, Qian Zhang   +5 more
doaj   +1 more source