Patent ID: 8905138

Claim:
A method of hydraulic fracturing of a geologic formation, comprising: a) flowing an amount of water from a water source to a direct contact heater, said amount of water having an ambient temperature of between about 32 degrees Fahrenheit and about 110 degrees Fahrenheit (about 0 degrees Celsius and about 43 degrees Celsius); b) continuously flowing said amount of water through said direct contact heater at a flow rate of between about 500 gallons per minute and about 2100 gallons per minute; c) heating said amount of water with said direct contact heater from said ambient temperature to a temperature of between about 40 degrees Fahrenheit and about 150 degrees Fahrenheit (about 4 degrees Celsius and about 66 degrees Celsius); d) delivering said amount of water from said direct contact heater to one or more fracturing pumps; and e) injecting said amount of water into a wellbore at sufficient pressure for hydraulic fracturing of said geologic formation.