Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent
1991-07-22
1992-11-24
Suchfield, George A.
Wells
Processes
Chemical inter-reaction of two or more introduced materials
166302, 1663051, 166308, 252 8551, E21B 4325, E21B 4326
Patent
active
051654792
ABSTRACT:
The present invention provides a method of treating a subterranean formation utilizing a gelled fluid containing a galactomannan gum and a crosslinking agent comprising a source of borate ions and a delayed crosslinker comprising a source of Ti(+4) or Zr(+4) ions. The combination of crosslinking agents yields a viscous fluid at elevated temperatures having a viscosity higher than attainable by either crosslinking agent alone or as the result of the additive effects of the crosslinking agents. The enhanced viscosity facilitates transport and placement of proppant material in a subterranean formation.
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Harms Weldon M.
Harris Phillip C.
Norman Lewis R.
Sandy Joe M.
Halliburton Services
Kent Robert A.
Suchfield George A.
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