METHOD OF EXPLOITING A HYDROCARBON DEPOSIT CONTAINING ORGANOSULFUR COMPOUNDS BY MEANS OF A THERMOKINETIC MODEL AND A COMPOSITIONAL

摘要

Method for determining an amount of hydrogen sulfide produced by a phenomenon of aquathermolysis induced by a thermal process, such as steam injection.;The hydrocarbons are described by means of a compositional representation using H2S and four fractions: saturated compounds, aromatics, resins and asphaltenes. Then a kinetic model is constructed on the basis of the compositional representation, starting from an elementary model obtained by mass balance for the element sulfur distributed within the fractions. Next, a thermodynamic model is constructed on the basis of the same compositional representation. Finally, the amount of hydrogen sulfide (H2S) produced is determined by performing a compositional reservoir simulation by means of a compositional and reactive thermal simulator, with the simulator employing the kinetic model and the thermodynamic model.

主权项

1. Method of exploiting an underground deposit of hydrocarbons containing organosulfur compounds, characterized in that:
i. an amount of hydrogen sulfide (H2S) is determined, produced by a phenomenon of aquathermolysis induced by a thermal process such as injection of steam into said deposit, using the following steps:
describing the hydrocarbons by means of a compositional representation using H2S and four fractions: saturated compounds, aromatics, resins and asphaltenes;constructing a kinetic model on the basis of said compositional representation, starting from an elementary model obtained by mass balance for the element sulfur distributed within said fractions;constructing a thermodynamic model on the basis of said compositional representation;determining the amount of hydrogen sulfide (H2S) produced, by performing a compositional reservoir simulation by means of a compositional and reactive thermal simulator, said simulator employing said kinetic model and said thermodynamic model; ii. the exploitation conditions of said deposit are determined as a function of said amount of hydrogen sulfide; iii. said hydrocarbons are produced by applying said exploitation conditions.