E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/27 (2006.01) C09K 8/52 (2006.01) C09K 8/62 (2006.01) C09K 8/68 (2006.01)
Patent
CA 2088291
Alkaline earth metal or transition metal peroxides are used as a delayed breaker in alkaline aqueous fluids containing a water soluble hydrophilic polysaccharide polymer hydrated therein. The peroxide is activated by increasing the temperature of the fluid. The invention is particularly useful for the delayed break of hydraulic fracturing fluids containing hydroxypropyl guar polymer.
Des peroxydes de métal alcalino-terreux ou de métal de transition sont utilisés comme agent de dégradation différée dans les liquides aqueux alcalins contenant un polymère polysaccharidique hydrophile hydrosoluble hydraté. On active le peroxyde en augmentant la température du liquide. L'invention est particulièrement utile pour la dégradation différée à des liquides de fracturation hydraulique contenant un polymère de guar hydroxypropylé.
Kirby Eades Gale Baker
Texas United Chemical Company Llc
LandOfFree
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