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.

The present application relates to methods and systems for mitigating condensate banking. In some embodiments, the methods and systems involve altering the wettability of a rock formation in the vicinity of a wellbore for a gas condensate reservoir.

Novel microemulsion formulations comprising a surfactant or combination of surfactants are disclosed for improved crude oil cleanup or recovery from subsurface geological formations, especially those containing carbonate cements.

Novel microemulsion formulations comprising a surfactant or combination of surfactants are disclosed for improved crude oil cleanup or recovery from subsurface geological formations, especially those containing carbonate cements.

Disclosed are alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester used in compositions and methods for inhibiting corrosion. The alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester are reaction products of an alkyl lactone and an amine, and an alkyl lactone and an alcohol, respectively.

Disclosed are alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester used in compositions and methods for inhibiting corrosion. The alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester are reaction products of an alkyl lactone and an amine, and an alkyl lactone and an alcohol, respectively.

Amorphous Dithiazine Dissolution Formulation and Method for using the Same The invention relates a use of an aqueous composition comprising at least one organic peroxide to dissolve amorphous dithiazine.

Amorphous Dithiazine Dissolution Formulation and Method for using the Same The invention relates a use of an aqueous composition comprising at least one organic peroxide to dissolve amorphous dithiazine.

The present disclosure provides methods and compositions for controlling asphaltenes in a subterranean formation. The compositions may include silica, a polymer, and optionally a charged surfactant. The compositions may also include a solvent or other additives. The methods may include injecting the compositions into subterranean formations and inhibiting asphaltene precipitation.

The present disclosure provides methods and compositions for controlling asphaltenes in a subterranean formation. The compositions may include silica, a polymer, and optionally a charged surfactant. The compositions may also include a solvent or other additives. The methods may include injecting the compositions into subterranean formations and inhibiting asphaltene precipitation.