NANOFLUID FOR FINES MIGRATION REDUCTION AND ENHANCED OIL RECOVERY, METHOD OF PREPARATION AND USES

摘要

The invention relates to a nanofluid preparation method (100) from biogenic material, said method comprising the steps of: Treating (120) biogenic material with a strong acid to remove metal impurities; Heating (140) the treated biogenic material at a first temperature comprised between 150°C and 500°C; Heating (150) the treated biogenic material at a second temperature above 600°C to pyrolyze the treated biogenic material; Grinding (160) the pyrolyzed biogenic material to obtain nanoparticles of biogenic material; and Mixing (180) nanoparticles of biogenic material with an organic solvent to form a nanofluid, said organic solvent comprising a low polarity solvent. The invention also relates to a nanofluid obtainable by the nanofluid preparation method and the use of such a nanofluid for example for reducing fines migration or enhanced crude oil recovery. The invention also relates to a system for enhanced crude oil recovery from a reservoir well.