Aqueous displacement fluid compositions for use in wellbores

Details Aqueous displacement fluid compositions for use in wellbores Aqueous displacement fluid compositions for use in wellbores

1997-06-12

2000-05-16

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

507928, 166304, 166292, 166312, C09K 300, E21B 3313, E21B 2100

Patent

active

060637374

ABSTRACT:
An aqueous displacement fluid composition is used as a spacer fluid composition to change one type of drilling mud for another type of drilling mud or in cementing operations downhole, to clean downhole hardware in wellbores. The method comprises introducing into a wellbore an aqueous displacement fluid composition, such as a spacer fluid, to displace downhole wellbore fluids, having an improved rate of emulsification and a high capacity for emulsifying hydrocarbons, and aqueous fluid compositions. The aqueous displacement fluid composition introduced into wellbores contain mixtures of:

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