During long-term storage of radioactive waste, steel containers are corroded and this process leads to hydrogen production. An in-situ experiment has been designed by Andra, in order to analyze the influence of gas migration on the dynamics of resaturation of the bentonite plug. The competition between liquid water coming from argillite and a gas injection at both ends of the plug is studied. P...

In the present study, the microstructure and mechanical properties of the dissimilar welding between ASTM A335 low alloy steel and ER309L austenitic stainless steel were investigated using the gas tungsten arc welding process. The welding of dissimilar materials between ASTM A335 low alloy steel and ER309L austenitic stainless steel was found to have a significant effect on the microstructure w...

Abstract Hot and warm Jupiters (HJs&WJs) are gas-giant planets orbiting their host stars at short orbital periods, posing a challenge to efficient in situ formation. Therefore, most HJs&WJs thought have migrated from an initially farther-out birth location. Current migration models, i.e., disk (gas-dissipation driven) eccentric (tidal evolution driven), fail produce the occurrence rate ...

In the Yan’an area of Ordos Basin, lithological heterogeneity Chang 7 Member shale is extremely strong. addition, sandy laminae highly developed within system. order to explore gas generation and migration processes shale, geochemical characteristics desorption are comprehensively compared analyzed. this study, rock crushing experiments were carried out obtain samples, samples laminated samples...

The present study is devoted to isolate and the effect of charge migration on photoionization from X@C60. noble gas atoms, Ar, Kr, Xe, are confined in C60 investigate impact entrapped atom side. work concludes that confinement oscillations features amplified due migration. Further, angle-resolved, spin average time delay also investigated light confinement. Features more relative those cross-se...

According to the grading curve and Water content allocation of hydrate reservoir, particle size distribution water condition formation sand are simulated, gas drive pressure difference is set. Under gravel packing control, one-dimensional unidirectional flow high argillaceous fine under analyzed, parameters such as displacement difference, rate, proportion permeability measured. The three phase...

Gas bubbles are widespread in seafloors and lakebeds typically found shallow fine-grained sediments. Sediment properties control gas nucleation migration. migration pathways have been studied mostly clean coarse particles or matrices. Nevertheless, both cases show very distinct geo-behaviors. Pore habit is defined by the counteracting effects of effective stress pore-throat-dependent capillary ...

A model for the simulation of gas flow in clayey rocks and clays is described. Gas migration is associated with the development of preferential paths along existing or pressure-dependent discontinuities. The model handles the combined phenomena of two-phase (air and liquid) flow and the generation of discrete paths. Aperture of discrete paths is the main variable to account for permeability and...

Unconventional natural gas resources offer an opportunity to access a relatively clean fossil fuel that could potentially lead to energy independence for some countries. Horizontal drilling and hydraulic fracturing make the extraction of tightly bound natural gas from shale formations economically feasible. These technologies are not free from environmental risks, however, especially those rela...