Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2007-08-21
2007-08-21
Sellers, Robert (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S265000, C507S269000
Reexamination Certificate
active
10910103
ABSTRACT:
Methods of servicing a wellbore in contact with a subterranean formation include passing an ester-based fluid into the wellbore and reducing a temperature of the ester-based fluid by an amount effective to cause the ester-based fluid to set, e.g., by from about 10° F. to about 20° F. The ester-based fluid includes a water in ester-based oil emulsion, a pH controlling additive, e.g., hydrated lime, in the water-phase, and an emulsifier to stabilize the pH controlling additive. Cooling the ester-based fluid causes the emulsion to destabilize, resulting in the release of the pH controlling additive. This release raises pH of the ester-based fluid by an effective amount to cause it to set. Wellbore servicing fluids comprising the foregoing ester-based fluid may be employed as environmentally friendly sealants or spotting fluids in wellbores.
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Dennis, Jr. John L.
Griffith James E.
Nida Ron D.
Conley Rose
Halliburton Energy Service,s Inc.
Roddy Craig W.
Sellers Robert
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