Statoil Petroleum as

Den Norske Stats Oljeselskap A.s.

Statoil Asa

Equinor Energy as

Statoilhydro Asa

Knut Grande

Heidi Mediaas

Jens Emil Vindstad

Hege Kummernes

Jorunn Steinsland Rosvoll

Ingvild Johanne Haug

Gotz Burgfels

Friedrich Schmidt

Volker Kurth

Stephan Wellach

Kim Reidar Høvik

Per Aksel Skjolsvik

Carsten Sorlie

Kim Reidar Hovik

Josef Schonlinner

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 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')

A single stage process for desulfurization and ring opening of a sulphur containing hydrocarbon feedstock comprising:

Ring opening process

Process for removing essentially naphthenic acids from a hydrocarbon oil

Growing community of inventors

Trondheim, Norway

Knut Grande