Process for stabilizing an oil-in-water or water-in-oil emulsion
AssigneeStatoil Petroleum AS
InventorsJens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande
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Abstract
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.
Claims25
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;
- and optionally
- (III) converting said salt into an acid.
A process for the preparation of at least one ARN acid 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;
- (III) if necessary, removing water or oil from the ARN acid salt;
- (IV) acidifying said ARN acid salt to form an ARN acid;
- and
- (V) optionally cleaning said ARN acid.
A process for the preparation of an ARN acid or salt thereof comprising
- (I) adding at least one metal ion to a crude oil at a pH of at least 5 so as to form an ARN acid salt;
- (II) separating at least a part of the formed ARN acid salt from the crude oil;
- and optionally
- (III) converting said salt into an acid.
A process for the preparation of an ARN acid or salt thereof comprising:
- (A) adding acid to a crude oil extracted from a field where water breakthrough has occurred so as to prevent ARN acid salt formation;
- (B) separating a part of the acidified oil/water mixture;
- (C) basifying said mixture to a pH of at least 5 to allow the ARN acid salt to form
- (D) removing at least 10% of the formed at least one ARN acid salt;
- and optionally
- (E) converting said salt into an acid.
A lubricant comprising an ARN acid or salt thereof.
An emulsion comprising an ARN acid, derivative or salt thereof.
A food additive comprising an ARN acid or salt thereof.
Dependencies are inferred from the claim text.