Prediction of Methane, Water and Ice Properties for Numerical Gas Hydrate Simulations

Year 2018, Volume: 14 Issue: 2, 177 - 186, 30.06.2018

Şükrü Merey

https://doi.org/10.18466/cbayarfbe.389820

Abstract

Gas
hydrates are considered as near-future potential energy resources. Due to the lack
of gas production data from gas hydrate reservoirs, numerical simulations are
very important to make production predictions for both experimental studies and
field production trials. Methane and water flow together when gas hydrates
dissociate inside the sediments. Hence, many parameters of methane and water
such as density, viscosity, enthalpy, internal energy and thermal conductivity
should be calculated at different pressure and temperature values during
non-isothermal numerical gas production simulations from gas hydrate
reservoirs. As a solid phase, ice might exist in the pores due to the
endothermic dissociation of gas hydrates. For this reason, water, methane, ice
properties as a function of temperature and pressure are estimated by the Matlab
codes written in this study: waterprop.m, gasprop.m, and iceprop.m. Density,
viscosity, enthalpy, internal energy and thermal conductivity of water and
methane calculated with the Matlab codes in this study, National Institute of
Standards and Technology were compared, and the reliability of waterprop.m,
gasprop.m and iceprop.m was proved.

Keywords

Gas hydrates, methane hydrate, methane, water, ice, numerical simulation, equations of states

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