Ifp Energies Nouvelles

Repsol, S.a.

Brigitte Doligez

Bruno Garcia

Mickaele Le Ravalec

Violaine Lamoureux-Var

Daniel Pillot

Isabelle Kowalewski

Mickael Barbier

María Fernanda León Carrera

Thomas Wagner

Christian März

Anabel Aboussou

James Oliver Buckman

A method which distinctly characterizes and quantifies the pyritic sulfur and the organic sulfur of a sedimentary rock sample. A rock sample is subjected to a heating sequence in an inert atmosphere which produces effluents resulting which are continuously oxidized. SOis continuously measured, and a pyrolysis sulfur content and a pyrolysis pyritic sulfur content are deduced therefrom. The residue from heating in an inert atmosphere is then heated in an oxidizing atmosphere. Released SOis continuously measured and at least an oxidation sulfur content is deduced therefrom. The pyritic sulfur content is determined from pyrolysis, a weighting function, a second parameter representing the impact of the mineral matrix and a third parameter representing the impact of the organic matrix.

Method for quantifying the pyritic sulfur and the organic sulfur of a rock sample

The invention is a method for exploiting a subterranean formation including hydrocarbons with at least one lithologic facies of the formation having undergone at least one diagenetic phase over geological times. From at least one sample of rock obtained from the formation, from measured production data relating to the formation and from a meshed representation representative of the formation, each mesh of the meshed representation is determined including at least one indicator relating to the distribution of the facies present in the mesh. The method comprises a step of history matching in which at least one of the adjustment parameters is the diagenetic state of the identified facies.

Method for exploiting a hydrocarbon deposit by history matching of production as a function of diagenesis

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Paris, France

Brigitte Doligez