Results 161 to 170 of about 187,646 (209)

Gas-induced swelling of beryllium implanted with deuterium ions

Journal of Nuclear Materials, 1996
Abstract An extensive TEM study of the microstructure of Be TIP-30 irradiated with 3 and 10 keV D ions up to fluences, Φ, in the range from 3 × 10 20 to 8 × 10 21 D/m 2 at temperatures, T irr = 300, 500 and 700 K has been carried out. Depth distributions of deuterium in a form of separate D atoms and D 2 molecules have been investigated by ...
V.N. Chernikov, V.Kh. Alimov, A.V. Markin, A.E. Gorodetsky, S.L. Kanashenko, A.P. Zakharov, I.B. Kupriyanov   +6 more
openaire   +1 more source

Estimating Swelling in Oil-Based Mud Due to Gas Kick Dissolution

Volume 11: Petroleum Technology, 2020
Abstract Gas kick is an ever-present hazard whose importance is magnified for offshore drilling situations. Modeling gas kick is a complex problem that requires an understanding of the relevant fluid dynamics as well as the solubility of natural gas in oil-based muds (OBM).
Kaushik Manikonda, Abu Rashid Hasan, Omer Kaldirim, Nazmul Rahmani, Mohammad Azizur Rahman   +4 more
openaire   +1 more source

A Statistical Fuel Swelling and Fission Gas Release Model

Nuclear Applications and Technology, 1970
AbstractA computer simulation of a fuel region has been developed based on movement of fission gas bubbles in solids under a thermal gradient. Within this region, fission gas events are followed via a Monte Carlo technique. Individual bubbles are followed through their time history from nucleation to release from the fuel, with interactions at ...
H. R. Warner, F. A. Nichols
openaire   +1 more source

A universal nanoscopic swell behavior model for gas shales

Journal of Natural Gas Science and Engineering, 2017
Abstract Hydraulic fracturing to tap unconventional shale gas reservoirs causes a volume change of the active clay minerals matrix in the gas shale structure, resulting in the clogging of the tiny nanopores and consequently undermining the production of the shale gas.
H.R. Ahmed, S.N. Abduljauwad
openaire   +1 more source

Re-solution effects and fission gas swelling in UO2

Journal of Nuclear Materials, 1972
Abstract A fission gas swelling model is proposed which enables one to calculate swelling in the vicinity of grain boundary networks and in imperfection-free regions. The grain boundary swelling requires a knowledge of the gas accumulation and the reaction-rate at the boundary. The gas accumulation was calculated by deriving a modified form of Fick's
C.C. Dollins, H. Ocken
openaire   +1 more source

Mechanisms of swelling and gas release in uranium dioxide

Journal of Nuclear Materials, 1971
Abstract Data on the external dimensional changes and gas release behavior of uranium dioxide irradiated in tungsten-rhenium claddings at surface temperatures from 1325 to 1900 °C are presented. External dimensional changes and gas release fractions increase with increasing temperatures; but the density of the uranium dioxide shows little change ...
R.F. Hilbert, V.W. Storhok, W. Chubb, D.L. Keller   +3 more
openaire   +1 more source

Extrudate swell of polyvinylchloride melts containing gas bubbles

1988
The behaviour of foaming molten PVC flowing out of capillaries was studied. Compositions of granulated PVC plasticate with 0 to 2% blowing agent (Genitron EPA) were extruded on a Plastograph Brabender through dies 3 mm in diameter and various lengths at temperatures of 160, 170 and 180°C.
N. Tuleshkov, S. Djumaliyski
openaire   +1 more source

A theoretical model for gas adsorption-induced coal swelling

International Journal of Coal Geology, 2007
Abstract Swelling and shrinkage (volumetric change) of coal during adsorption and desorption of gas is a well-known phenomenon. For coalbed methane recovery and carbon sequestration in deep, unminable coal beds, adsorption-induced coal volumetric change may cause significant reservoir permeability change.
Zhejun Pan, Luke D. Connell
openaire   +1 more source

Swelling of Oil-Base Drilling Fluids Due to Dissolved Gas

SPE Annual Technical Conference and Exhibition, 1987
ABSTRACT A major problem associated with the use of oil-base drilling fluids is the increased difficulty of detecting gas which enters the borehole and dissolves in the drilling fluid. Previous authors have made computer-simulated comparisons between a water-base and an oil-base drilling fluid for one specific field example.
P. L. O'Bryan, A. T. Bourgoyne
openaire   +1 more source

Effect of gas atoms on swelling of austenitic stainless steel

Journal of Nuclear Materials, 1994
Abstract There have been many studies on the effect of He on swelling, however not so many on the effect of nitrogen on swelling. In this study the effect of nitrogen on swelling of 316 steel was investigated under HVEM irradiation for establishing a model of swelling.
N. Igata, N. Eguchi, E. Nishibe, A. Naito   +3 more
openaire   +1 more source