(262bg) Comparative Study Between Dissociation Conditions of H2o + N2+ Undecane and H2o + CO2+ Undecane Mixtures in Hydrate Formation

Gas hydrates are crystalline solid ice-like structures, formed by water and small gas molecules with low molecular weight, which is housed in the cavities formed by the hydrogen bonds at conditions of hydrate formation (high pressure, low temperature, small gas molecules and presence of water). The hydrates are typically stable at low temperatures and high pressures, such as the conditions found in deep waters. In México there are reservoirs with high content of water (20 % or more) like Cantarell where hydrate formation can be simple. In this work, the experimental dissociation conditions for the hydrate formed in the mixtures: H₂O + C₁₁H₂₄ + CO₂ and H₂O + C₁₁H₂₄ + N₂ were reported in the temperature range of (265.15-293.15) K and pressures up to 4 MPa for CO₂ and 30 MPa for N₂. The composition expressed as mass fraction of undecane was 0.05 and 0.10. The experimental equipment used in this work is based on the static-synthetic-isochoric method. The combined expanded uncertainties of the dissociation conditions measurements were evaluated to be less than 0.012 MPa, 0.020 K and 0.0020 for pressure, temperature and mass fraction, respectively.