Results 51 to 60 of about 1,026 (173)

Gas Diffusion Coefficient in Tight Sandstones: An Experimental Approach Under Various Controlling Factors

Geofluids, Volume 2026, Issue 1, 2026.
This study investigates the natural gas diffusion coefficients in tight sandstones, emphasizing the Sulige area′s geological conditions. Through experimental measurements and the simulation of natural gas diffusion processes, we explore the impact of various geological factors—including temperature, pressure, porosity, permeability, pore throat radius,
Zhongying Zhao, Shan Lu, Lijun Zhang, Shouxu Pan, Tao Chen   +4 more
wiley   +1 more source

Experimental Study on Multiscale Evolution Mechanism of Coalbed Reservoir Properties in “Three‐Low” CBM Reservoirs Modified by Chlorine Dioxide

Geofluids, Volume 2026, Issue 1, 2026.
Aiming at the “three‐low” challenges (low permeability, low gas saturation, and low critical desorption‐to‐storage ratio [CDSR]) of Chinese coalbed methane (CBM) reservoir materials, this study adopted chlorine dioxide (ClO2) chemical modification on long‐flame, coking, and anthracite coal materials.
Chaowen Hu, Ruifeng Huang, Huifeng Wang, Bo Pan, Xiaojie Yang, Yichao Li, Fulong Sun, Umberta Tinivella   +7 more
wiley   +1 more source

Design and application of adaptive intelligent drainage and production process for high-water-production gas wells [PDF]

Youqicang pingjia yu kaifa
High-water-production gas wells experience significant wellbore pressure loss. During production, pressure decline can cause the liquid droplets in the wellbore to fall back and accumulate, forming slug flow.
LUO Yi, ZHOU Ruili, FU Weibing, QIAO Qianyu, KONG Hao
doaj   +1 more source

Analysis of Gas Migration Characteristics and Controlling Factors in Nanopores of Deep Coal Seams

Geofluids, Volume 2026, Issue 1, 2026.
Nanopores of various scales and morphologies in coal are important spaces for gas storage and migration. To deeply analyse the initial gas migration scale and characteristics in coal matrix micropores, this paper constructs an apparent permeability model describing the gas migration scale based on the gas transport mechanism, and analyses the ...
Ji Xiaofeng, Cao Jinyao, Song Dangyu, Jian Kuo, Li Quanzhong, Pramita Mishra   +5 more
wiley   +1 more source

Drainage system research and application of deep coalbed methane gas reservoirs in Daning-Jixian block

Meitan xuebao
Compared to Medium-shallow coalbed methane, deep coalbed methane exhibits significant differences in occurrence state, production mechanism, lifting technology, etc.As an important part of coalbed methane development, drainage directly impact the gas ...
Ming CHEN, Dameng WANG, Lizhu YU, Junyi SUN, Xin FENG, Kang ZHANG, Xianfeng GU, Liwei WANG, Zesong YIN, Huan ZHANG   +9 more
doaj   +1 more source

Advances in Research on Immature to Low‐Maturity Shale Oil Upgrading Technology

Journal of GeoEnergy, Volume 2026, Issue 1, 2026.
Confronted with the challenges of ever‐increasing global demand for oil and gas, coupled with the depletion of conventional resources, the strategic importance of unconventional oil and gas resources is becoming increasingly significant, with shale oil being particularly crucial.
JunHao Liu, Zhaowei Hou, Erlong Yang, Min Wang, HaoChen Zhai, Yinsong Liu, Arnab Biswas   +6 more
wiley   +1 more source

Application and discussion of geological guidance technology for deep coalbed methane horizontal wells: A case study of block X in Shenmu gas field, Ordos Basin [PDF]

Youqicang pingjia yu kaifa
The Ordos Basin is rich in deep coalbed methane resources, with block X of the Shenmu gas field being a key exploration and development area for the Jidong Oilfield in the basin.
LIN WEIQIANG, CONG PENG, WANG HONG, WEI ZICHEN, YANG YUNTIAN, YAO ZHIQIANG, QU LILI, MA LIMIN, WANG FANGLU   +8 more
doaj   +2 more sources

Enhanced Coalbed Methane Extraction by Geothermal Stimulation in Deep Coal Mines: An Appraisal

, 2021
Coalbed methane embedded in coal seams, is an unconventional energy resource as well as a hazardous gas existing in mining industries, which attracts lots of global attention. As the largest coal producer, the mining industry in China had to deal with many hazards induced by methane for decades.
Yu, Xu, Lin, Baiquan, Zhai, Cheng, Zhu, Chuanjie, Regenauer-Lie, Klaus, Chen, Xiao   +5 more
openaire   +2 more sources

Physical simulation study on the transport of biomimetics dandelion proppant in similar coalbed methane fracture network

Meitan xuebao
Accelerating the exploration and development of deep coalbed methane resources is a key direction for developing coalbed methane. However, with large-scale volume fracturing in deep coalbed methane development, the complexity of the fractures formed by ...
Jun LI, Pingli LIU, Nianyin LI
doaj   +1 more source

Application of Integrated Directional and Guide Drilling Technology in Deep Coalbed Methane

Journal of Physics: Conference Series
Abstract Deep coalbed methane is characterized by deep burial, complex and diverse microstructures, significant lateral variations in reservoirs, and the development of internal interlayers. Current seismic exploration methods suffer from severe high-frequency signal attenuation in coal layers, resulting in low seismic resolution, which ...
Weixing Zhu, Zhuang Wang, Dong Wu, Wang Lin, Yaxuan Wang, Kai Huang, Jiayu He, Hongzhi Xue   +7 more
openaire   +1 more source