Results 11 to 20 of about 1,110,256 (312)
Frontiers in Earth Science, 2023 Guaranteeing CO2 injectivity has been the precondition for implementing the CO2-enhanced coalbed methane recovery (CO2-ECBM), however, it dramatically decreases during the CO2 injection process because it is influenced by the dynamic change of the ...
Qinghe Niu +16 more
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Spray characteristics of a multi-hole injector for direct-injection gasoline engines [PDF]
, 2006 The sprays from a high-pressure multi-hole nozzle injected into a constant-volume chamber have been visualized and quantified in terms of droplet velocity and diameter with a two-component phase Doppler anemometry (PDA) system at injection pressures up ...
Arcoumanis, C. +3 more
core +1 more source
Influence of tectonic fractures on CO2 storage and enhanced CH4 recovery
Meitan xuebao, 2023 In the process of CO2-ECBM, the tectonic fractures developed in the coal may become the preferential channels of gas-water seepage under the impact of injection pressure, and then influence the recovery of coalbed methane (CBM) and CO2 storage.
Ziliang WANG +4 more
doaj +1 more source
Analysis of the causes of rising water content in the late stage of poly-drive in western block III of Area B and study of adjustment methods [PDF]
E3S Web of Conferences, 2022 Seizing the main contradiction of fast water-bearing rebound in western block III, analyzing the reasons of fast water-bearing rebound in response to the contradiction, meanwhile, by understanding the mechanism of polymer oil drive and combining the ...
Wu Qiong
doaj +1 more source
Effect of Injection Site on Fault Activation and Seismicity during Hydraulic Fracturing
Energies, 2017 Hydraulic fracturing is a key technology to stimulate oil and gas wells to increase production in shale reservoirs with low permeability. Generally, the stimulated reservoir volume is performed based on pre-existing natural fractures (NF).
Zhaohui Chong, Xuehua Li, Xiangyu Chen
doaj +1 more source
Fault reactivation by fluid injection: Controls from stress state and injection rate [PDF]
, 2018 We studied the influence of stress state and fluid injection rate on the reactivation of faults. We conducted experiments on a saw-cut Westerly granite sample under triaxial stress conditions.
Brantut, Nicolas +2 more
core +2 more sources
Vortex shedding in a two-dimensional diffuser: theory and simulation of separation control by periodic mass injection [PDF]
, 2004 We develop a reduced-order model for large-scale unsteadiness (vortex shedding) in a two-dimensional diffuser and use the model to show how periodic mass injection near the separation point reduces stagnation pressure loss.
Colonius, Tim +2 more
core +1 more source
Yantu gongcheng xuebao, 2018 The variations of reservoir stress caused by the multi-stage and discontinuous nature of the process in the CO2 geological storage, leading to the change of permeability and pore structure of the rock, have a direct impact on CO2 injection and storage ...
MI Zhao-xu 1, WANG Fu-gang 1, SHI Na 2, YU Jing-zong 3, SUN Zhao-jun 1
doaj +1 more source
European Mechanical Science, 2023 In this study, the combustion, performance, emissions, noise, and vibration characteristics of a single-cylinder, four-stroke, air-cooled diesel engine used for non-road purposes were investigated by controlling different injection pressures with a ...
Nurullah Gültekin +2 more
doaj +1 more source
Post-injection normal closure of fractures as a mechanism for induced seismicity [PDF]
, 2017 Understanding the controlling mechanisms underlying injection-induced seismicity is important for optimizing reservoir productivity and addressing seismicity-related concerns related to hydraulic stimulation in Enhanced Geothermal Systems.
E. Keilegavlen +5 more
core +2 more sources