摘要 |
Disclosed are treating fluid compositions for use in subterranean hydraulic fracturing operations, wherein the fluid compositions contain a liquid, a crosslinkable organic polymer that is soluble in the liquid, and a concentrated borate solution containing a refined, readily-soluble borate, the borate solution being present as a crosslinking agent to crosslink the organic polymer and increase the viscosity of the composition. The compositions may further include one or more freeze-point depressants, thereby increasing the stability of the compositions over a wide range of environmental temperatures. |