Martha Hajiw | Mines Paristech (original) (raw)

Papers by Martha Hajiw

Journal of Natural Gas Science and Engineering, 2015

With the worldwide consumption pace, the actual proven reserves are supposed to be enough for 60 ... more With the worldwide consumption pace, the actual proven reserves are supposed to be enough for 60 years. Regarding to natural gas reservoirs, it is estimated that 40% [1] of these reserves are acid and sour gases. Therefore they present a new interest for the industry. But these gases present significant quantities of carbon dioxide and hydrogen sulphide. And because produced reservoir fluids are in equilibrium with water, hydrates formation can occur during production phases, especially during transport. However few data are available for systems containing hydrogen sulphide, due to its toxicity and corrosiveness. Hydrate dissociation points have been measured for the binary system methane – hydrogen sulphide and the ternary system methane – carbon dioxide – hydrogen sulphide. For systems containing associating compounds such as water, alcohols, glycols and even hydrogen sulphide, the Cubic-Plus-Association (CPA) [2-4] equation of state has been used with the group contribution meth...

The Canadian Journal of Chemical Engineering, 2014

ABSTRACT It is proposed in this paper to extend the original group contribution method PPR78 to s... more ABSTRACT It is proposed in this paper to extend the original group contribution method PPR78 to systems containing water, by combining it to the Cubic–Plus–Association (CPA) equation of state (EoS). Applying simple geometric combination rules, the binary interaction parameter kij(T) can be calculated from interaction parameters between hydrocarbon groups and water. This model, called the GC–PR–CPA is applied to predict hydrocarbons – water mutual solubilities over a wide temperature and pressure range, depending on available literature data.Group interaction parameters, here CH4, C2H6, CH3, CH2, CH, C, CHaro, CH2,cyclic, CHcyclic/Ccyclic, C2H4, CH2,alkene/CHalkene with H2O have been defined with solubility data. Predictions of the developed model have been validated against independent solubility data as well as water content in hydrocarbon rich phase. Predictions of the new model are in good agreement for light and medium hydrocarbons, however some deviations are observed for heavier hydrocarbons.

Journal of Natural Gas Science and Engineering, 2015

With the worldwide consumption pace, the actual proven reserves are supposed to be enough for 60 ... more With the worldwide consumption pace, the actual proven reserves are supposed to be enough for 60 years. Regarding to natural gas reservoirs, it is estimated that 40% [1] of these reserves are acid and sour gases. Therefore they present a new interest for the industry. But these gases present significant quantities of carbon dioxide and hydrogen sulphide. And because produced reservoir fluids are in equilibrium with water, hydrates formation can occur during production phases, especially during transport. However few data are available for systems containing hydrogen sulphide, due to its toxicity and corrosiveness. Hydrate dissociation points have been measured for the binary system methane – hydrogen sulphide and the ternary system methane – carbon dioxide – hydrogen sulphide. For systems containing associating compounds such as water, alcohols, glycols and even hydrogen sulphide, the Cubic-Plus-Association (CPA) [2-4] equation of state has been used with the group contribution meth...

The Canadian Journal of Chemical Engineering, 2014

ABSTRACT It is proposed in this paper to extend the original group contribution method PPR78 to s... more ABSTRACT It is proposed in this paper to extend the original group contribution method PPR78 to systems containing water, by combining it to the Cubic–Plus–Association (CPA) equation of state (EoS). Applying simple geometric combination rules, the binary interaction parameter kij(T) can be calculated from interaction parameters between hydrocarbon groups and water. This model, called the GC–PR–CPA is applied to predict hydrocarbons – water mutual solubilities over a wide temperature and pressure range, depending on available literature data.Group interaction parameters, here CH4, C2H6, CH3, CH2, CH, C, CHaro, CH2,cyclic, CHcyclic/Ccyclic, C2H4, CH2,alkene/CHalkene with H2O have been defined with solubility data. Predictions of the developed model have been validated against independent solubility data as well as water content in hydrocarbon rich phase. Predictions of the new model are in good agreement for light and medium hydrocarbons, however some deviations are observed for heavier hydrocarbons.