DELAYED BORATE CROSSLINKING FRACTURING FLUID

摘要

The crosslinking of galactomannan gum fracturing fluids by borate ions is delayed for high temperature applications by complexing boron in a basic solution with an organic polyol. Low pumping friction pressures are achieved by the delay in the crosslinking with the boron being available at high temperatures to add high temperature stability to the fracturing fluid at temperatures ranging up to about 300.degree.F.