Results 71 to 80 of about 20,174 (266)

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology

Petroleum Science, 2018
Diffusion is an important mass transfer mode of tight sandstone gas. Since nano-pores are extensively developed in the interior of tight sandstone, a considerable body of research indicates that the type of diffusion is mainly molecular diffusion based ...
Hong-Lin Zhu, Shou-Feng Wang, Guo-Jun Yin, Qiao Chen, Feng-Lin Xu, Wei Peng, Yan-Hu Tan, Kuo Zhang   +7 more
doaj   +1 more source

Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced

Geofluids, 2021
Finding ways to accelerate the effective development of tight sandstone gas reservoirs holds great strategic importance in regard to the improvement of consumption pattern of world energy.
Yongchao Xue, Qingshuang Jin, Hua Tian
doaj   +1 more source

Theory and practice of unconventional gas exploration in carrier beds: Insight from the breakthrough of new type of shale gas and tight gas in Sichuan Basin, SW China

Petroleum Exploration and Development, 2023
Unconventional gas in the Sichuan Basin mainly includes shale gas and tight gas. The development of shale gas is mainly concentrated in the Ordovician Wufeng Formation–Silurian Longmaxi Formation, but has not made any significant breakthrough in the ...
Tonglou GUO, Liang XIONG, Sujuan YE, Xiaoxia DONG, Limin WEI, Yingtao YANG   +5 more
doaj   +1 more source

Tomography of atomic number and density of materials using dual-energy imaging and the Alvarez and Macovski attenuation model [PDF]

, 2016
Dual-energy computed tomography and the Alvarez and Macovski [Phys. Med. Biol. 21, 733 (1976)] transmitted intensity (AMTI) model were used in this study to estimate the maps of density (ρ) and atomic number (Z) of mineralogical samples.
Fullagar, W. K., Kingston, A. M., Latham, S. J., Myers, G. M., Paziresh, M.   +4 more
core   +1 more source

Study on the mechanism of CO2 injection to improve tight sandstone gas recovery

Energy Reports, 2022
Supercritical CO2 can improve gas recovery and achieve carbon sequestration in tight gas reservoir. It is a hot topic but not applied extensively. The main restricts include the unclear mechanism of gas-to-gas displacement and the reduction of the natural gas asset value due to CO2 breakthrough.
Haiying Liao, Weiyi Pan, Yingfu He, Xin Fang, Yao Zhang   +4 more
openaire   +2 more sources

Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory

Deep Underground Science and Engineering, EarlyView.
The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai, Ning Luo, Jianan Zhou, Haohao Zhang, Penglong Li, Yu Wang, Cheng Zhai, Tianran Ma   +7 more
wiley   +1 more source

Insights into the Co-Exploration Potential of Gas in the Shale and Tight Sandstone of the Lower Silurian Formation in the Gongtan Syncline Area in Southeastern Sichuan Basin, SW China

Energies
This work aims to explore the Lower Silurian shale gas and tight sandstone gas accumulation conditions in the Gongtan Syncline, southeastern Sichuan Basin.
Shengxiu Wang, Ye Zhang, Wei Wang, Yang Yang, Qiaoli Wang, Chuan Yu, Difei Zhao, Chunlin Zeng, Yao Xu   +8 more
doaj   +1 more source

Origin and accumulation models of ultra-low permeability-tight sandstone (gravel) gas in Bohai Bay Basin, China

Journal of Natural Gas Geoscience, 2022
Ultra-low permeability–tight sandstone (gravel) gas reservoir is an important exploration target for natural gas both domestically and internationally.
Jianying Guo, Xuening Qi, Lianhua Hou, Aisheng Hao, Xu Zeng, Shiguo Lin, Xiugang Pu, Zengye Xie, Yifeng Wang, Xiaobo Wang, Dawei Chen   +10 more
doaj   +1 more source

Investigating the impact of reservoir properties and injection parameters on carbon dioxide dissolution in saline aquifers [PDF]

, 2018
CO2 injection into geological formations is considered one way of mitigating the increasing levels of carbon dioxide concentrations in the atmosphere and its effect on and global warming.
Al-khdheewi, Bentham, Brook, Cameron, Garcia, Ide, Metz   +6 more
core   +1 more source