Use of delayed release breakers in gelled hydrocarbons

Details Use of delayed release breakers in gelled hydrocarbons Use of delayed release breakers in gelled hydrocarbons

E - Fixed Constructions

21

B

E21B 43/26 (2006.01) C09K 8/536 (2006.01) C09K 8/70 (2006.01) C09K 8/80 (2006.01)

Patent

CA 2324059

Granules composed of a particulate breaker chemical [e.g. Ca(Oh)2] dispersed in a wax matrix are used in fracturing operations to break hydrocarbon liquids gelled with salts of alkyl phosphate esters. The wax granules are solid at surface temperature and melt or disperse in the hydrocarbon liquid at formation temperature releasing the breaker chemical to react with gelling agent.

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