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US 10,087,382 B2Granted
Fluid additive and method of making and using the same
AssigneesSchlumberger Norge AS, M-I L.L.C.
InventorsTore Nordvik, Anders Grinrod, Rachael Anne Cole, Astrid Lone, Chandrashekhar Yeshwant Khandekar
Life of this patent
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Abstract
A number of variations may include a product including a fluid additive including at least one asphaltene dispersant/inhibitor including a branched dendritic core and at least one carboxylic acid moiety.
Claims17
A product comprising:
- an organic solvent;
- and
- a fluid additive comprising at least one asphaltene dispersant/inhibitor comprising:
- a reaction product of a branched dendritic core lacking a nitrogen functional group and at least one carboxylic acid moiety;
- and
- at least one aromatic spacer between the branched dendritic core and the at least one carboxylic acid moiety, wherein the aromatic spacer is derived from a monohydroxy aromatic carboxylic acid or a monoamino aromatic carboxylic acid,
- wherein the fluid additive is solublized in the organic solvent.
4 more elements
A process comprising:
- providing a branched dendritic core comprising greater than or equal to about 16 terminal hydroxyl groups reacted with at least one aromatic spacer, wherein the aromatic spacer is derived from a monohydroxy aromatic carboxylic acid or a monoamino aromatic carboxylic acid;
- providing at least one carboxylic acid moiety comprising from 6 to 40 carbon atoms;
- and,
- reacting the branched dendritic core with the carboxylic acid moiety to provide an asphaltene dispersant/inhibitor.
1 more element
A process comprising:
- providing at least one carboxylic acid moiety comprising from 6 to 40 carbon atoms;
- providing at least one aromatic spacer comprising at least one terminal hydroxyl group;
- reacting the spacer with the carboxylic acid moiety wherein the carboxylic acid moiety is esterified with the at least one terminal hydroxyl group of the spacer to form a hybrid carboxylic acid moiety;
- thereafter providing a branched dendritic core comprising greater than or equal to about 16 terminal hydroxyl groups;
- and
- reacting the branched dendritic core with at least one of the hybrid carboxylic acid moiety to provide an asphaltene dispersant/inhibitor.
3 more elements
Dependencies are inferred from the claim text.