Results 31 to 40 of about 1,821,617 (301)

Swelling Pressure of Double-Expansive Material and Its Active Support Effect for Coal Seam Gas Drainage Borehole

open access: yesAdvances in Materials Science and Engineering, 2018
To improve coal seam gas drainage performance, we developed a double-expansive (DE) material to seal the borehole. The swelling process of this material includes an initial swelling stage and a secondary swelling stage.
Zhiming Wang, Yuning Sun
doaj   +1 more source

The influence of moisture content on coal deformation and coal permeability during coalbed methane (CBM) production in wet reservoirs

open access: yesJournal of Petroleum Exploration and Production Technology, 2020
Moisture adsorption in the coal seams affects the gas adsorption capacity and can alter the coal deformation and permeability criteria of the coal seam.
Akash Talapatra, Md. Mostafijul Karim
doaj   +1 more source

Creep characteristics and constitutive model of coal under triaxial stress and gas pressure

open access: yesEnergy Science & Engineering, 2020
Creep behavior is one of the most important mechanical behaviors of coal. In the present study, we systematically carried out a series of creep experiments of briquette samples under triaxial compression and gas pressure.
Liang Zhang   +5 more
doaj   +1 more source

The effect of adsorption-induced swelling on porosity based on the transient coal swelling model

open access: yesAIP Advances, 2019
Coal swelling induced by gas adsorption is a well-known phenomenon. In order to enhance coalbed methane production and greenhouse gases sequestration, adsorption phase should be understood deeply, and it is the most basic and the most important ...
Bo Zhang   +3 more
doaj   +1 more source

Recovery Mechanisms for Cyclic (Huff-n-Puff) Gas Injection in Unconventional Reservoirs: A Quantitative Evaluation Using Numerical Simulation

open access: yesEnergies, 2020
Unconventional reservoirs produce large volumes of oil; however, recovery factors are low. While enhanced oil recovery (EOR) with cyclic gas injection can increase recovery factors in unconventional reservoirs, the mechanisms responsible for additional ...
B. Todd Hoffman, David Reichhardt
doaj   +1 more source

Role of adsorption and swelling on the dynamics of gas injection in coal [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2009
An experimental technique is presented to perform gas injection experiments on coal cores confined by an external hydrostatic pressure, which makes use of the so‐called transient step method. The experiments are intended to improve the knowledge on the different mechanisms acting during CO2 storage in coal seams, in particular, those related to ...
R. Pini   +4 more
openaire   +2 more sources

Study of the Resistance of Lithium-Containing Ceramics to Helium Swelling

open access: yesCeramics
The paper presents the results of studies of the resistance of lithium ceramics to helium swelling during its accumulation in the structure of the near-surface layer, and the identification of the three types of lithium ceramics most resistant to ...
Artem L. Kozlovskiy   +3 more
doaj   +1 more source

Prediction of Thermophysical Characteristics of Fuel Rods Based on Calculations

open access: yesEnergy Engineering and Control Systems, 2021
The paper analyzes operating conditions, thermophysical characteristics were calculated as applied to WWER-1000 fuel rods in a four-year cycle for unified core.
Stepan Lys   +2 more
doaj   +1 more source

A laboratory investigation of carbon dioxide-enhanced oil recovery by focusing on CO2-oil physical properties

open access: yesEgyptian Journal of Petroleum, 2019
Carbon dioxide (CO2) miscible flooding has become an important method in enhanced oil recovery (EOR) for recovering residual oil. In addition it may help in protection of the environment as (CO2) is widely viewed as an important agent in global warming ...
E.M. Mansour   +4 more
doaj   +1 more source

Experiments on High-Temperature Irradiation of Li2ZrO3/MgLi2ZrO4 Ceramics by He2+ Ions

open access: yesCeramics
The key objective of this study is to determine the effect of interphase boundaries, the formation of which is caused by the variation of Li2ZrO3/MgLi2ZrO4 phases in lithium-containing ceramics based on lithium metazirconate, on the resistance to near ...
Dmitriy I. Shlimas   +3 more
doaj   +1 more source

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