Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2005-08-16
2005-08-16
Walker, Zakiya (Department: 3672)
Wells
Processes
Placing fluid into the formation
C166S300000, C166S307000
Reexamination Certificate
active
06929070
ABSTRACT:
A method for diverting the majority of the fluid injected into a stratified subterranean formation, that has at least one problematic zone and at least one hydrocarbon zone, into the hydrocarbon zone includes injection of a viscous diverting fluid made with a gelling amount of a surfactant and an acid before the main treatment; after the treatment the acid decomposes the surfactant. The main treatment may be hydraulic fracturing, acid fracturing and matrix acidizing. The fluid used as the diverting fluid may also be used as the carrier fluid in hydraulic fracturing or gravel packing. Destruction of the surfactant alleviates the potential of diverters or carrier fluids to damage formations.
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SPE 56529 Case Study of a Novel Acid-Diversion Technique in Carbonate Reservoirs. F.F.Chang, T.Love, C.J.Affeld, J.B.Blevins III, R.L.Thomas, and D.K.Fu, 1998.
Chang Frank
Fu Diankui
Echols Brigitta L.
Mitchell Thomas O.
Nava Robin
Schlumberger Technology Corporation
Walker Zakiya
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