Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2007-04-24
2007-04-24
Suchfield, George (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C166S295000, C175S072000, C507S219000, C507S224000, C507S225000, C507S226000, C507S928000
Reexamination Certificate
active
10893210
ABSTRACT:
The present invention relates to spacer fluids used in subterranean operations and, more particularly, to spacer fluids that comprise water-soluble relative permeability modifiers and methods of using the spacer fluids in subterranean operations. In one embodiment, the present invention provides a method of displacing a first fluid from a well bore that comprises introducing the first fluid into the well bore; and displacing the first fluid with a spacer fluid, the spacer fluid comprising water, and a water-soluble relative permeability modifier comprising a hydrophobically modified polymer or a hydrophilically modified polymer. In another embodiment, the present invention provides a spacer fluid that comprises water, and a water-soluble relative permeability modifier comprising a hydrophobically modified polymer or a hydrophilically modified polymer.
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ews/archive/2001/esgnws—053101.jsp?printMe.
Hal
Dalrymple Eldon D.
Eoff Larry S.
Reddy B. Raghava
Fletcher Yoder & Van Someren
Halliburton Energy Service,s Inc.
Kent Robert A.
Suchfield George
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