Typically, crosslinkers, buffers, and breakers used in fracture-fluid designs have been tested emphasizing break time. Fracture fluids for high-permeability formations must he designed for multiple purposes: wellbore crosslink time, stabitity, and break time. It is important that these times be based on correct temperatures. A fluid design must satisfy crosslink dine at a cooler wellbore temperature while pumping, stability time at a cooler wellbore and in-situ fracture temperature while pumping, and break time at a temperature closer to bottomhole static temperature (BHST) once pumping ceases.