Oxidized guar for oilfield servicing fluids

Details Oxidized guar for oilfield servicing fluids Oxidized guar for oilfield servicing fluids

2007-05-18

2010-12-14

Figueroa, John J (Department: 1796)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S211000, C507S219000, C507S240000, C507S265000, C507S269000, C507S276000, C166S305100, C166S308100

Reexamination Certificate

active

07851416

ABSTRACT:
An oilfield servicing fluid composition containing an aldehyde guar produced by enzymatic oxidation of a non-derivatized, straight guar or of a guar derivative. The enzyme used to oxidize the guar to the aldehyde guar is galactose oxidase, which may be combined with catalase or catalase and peroxidase. The aldehyde guar is useful as an effective gelling agent for oilfield servicing fluids such as hydraulic fracturing fluids and stimulation fluids.

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