Statoil Petroleum As

Equinor Energy As

Statoil Asa

Jens Emil Vindstad

Heidi Mediaas

Knut Vebjørn Grande

Knut Grande

Hege Kummernes

Ingvild Johanne Haug

Jorunn Steinsland Rosvoll

Kim Reidar Høvik

Kim Reidar Hovik

Knut Vebjorn Grande

Metal naphthenate is removed from a crude hydrocarbon mixture by a process. The process includes mixing the crude hydrocarbon mixture comprising metal naphthenate with an acid in the presence of water, wherein the acid converts the metal naphthenate to naphthenic acid and metal salt; allowing the metal salt to partition into a water phase; and separating the crude heavy hydrocarbon mixture comprising naphthenic acid and the water phase comprising the metal salt.

Process for removing metal naphthenate from crude hydrocarbon mixtures

A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.

Process for stabilizing an oil-in-water or water-in-oil emulsion

A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content.

Method for isolation and quantification of naphthenate forming acids ('ARN-acids')

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Stavanger, Norway

Jens Emil Vindstad