Results 41 to 50 of about 1,709 (207)
Deep Underground Science and Engineering, EarlyView.A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li +7 more
wiley +1 more source
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 +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley +1 more source
Research and Patterns of Rock Acid Pressure Corrosion Tests [PDF]
E3S Web of ConferencesIn China, tight sandstone gas reservoirs are widely distributed, yet their development is hindered by issues such as low extraction efficiency and a monotonous extraction approach.
Hu Jiangchun +6 more
doaj +1 more source
Natural Gas Industry B, 2020 For the sake of improving the reliability of the method for well pattern density optimization of tight sandstone gas reservoir and effectively demonstrate the relationship between well pattern density and recovery efficiency, the well interference ...
Shusheng Gao +5 more
doaj +1 more source
Energy Extraction and Processing Science
Energies, 2023 With an increasingly tight supply of world energy resources, unconventional oil and gas resources, including shale oil and gas, coal-bed gas, tight sandstone oil and gas, have attracted much attention [...]
Shaoqi Kong +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Journal of Natural Gas Geoscience, 2017 There hasn't been a clear understanding of the lower limits of petrophysical parameters of tight sandstone gas reservoirs so far. However, it is an important question directly related to exploration and development strategies.
Huiying Cui +6 more
doaj +1 more source
Gas-water relative permeability model for tight sandstone gas reservoirs [PDF]
SCIENTIA SINICA Technologica, 2018 The pores in tight sandstone gas reservoir are mostly in microscale, and the gas water two-phase flow behavior through those pores is considerably complicated, thus, how to establish a reliable relative permeability model is the urgent problem to be solved.
Tao ZHANG +5 more
openaire +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 +4 more
openaire +2 more sources