roche (1) pétrole (1) hydrocarbure (1) exploration (1) différenciation (1) substance chimique (1) biomarqueur (1) carbone (1) Differentiation (1) Area (1) Methods (1) Area (1) Wells (1) Reproduction (1) Petroleum (1) Oils and fats (1) Isotopes (1) Carbon (1) Biochemical markers (1) Methods (1) Isotopes (1) Number (1) Migration (1)