Oilfield surface equipment cooling system

A method for cooling process equipment, comprising:

• receiving a process fluid from a process fluid source;
• receiving a first portion of the process fluid in a first heat exchanger that is fluidly coupled with a mixing assembly thereby transferring heat from a process equipment to the first portion of the process fluid, such that a first heated process fluid is generated;
• receiving at least a portion of the first heated process fluid in a mixing assembly;
• mixing one or more additives with the first heated process fluid using the mixing assembly;
• receiving a second portion of the process fluid in a second heat exchanger that is fluidly coupled with a pump, so as to transfer heat from the pump to the second portion of the process fluid, such that a second heated process fluid is generated;
• controlling a temperature of the heated process fluid such that the heated process fluid is maintained in a range of temperatures, wherein a maximum of the range is below a boiling point of the process fluid;
• joining the first and second portions of the heated process fluid;
• and
• delivering at least a portion of the heated process fluid into a wellbore.

A system for hydraulic fracturing, comprising:

• a process fluid source comprising a process fluid;
• a fluid preparation assembly comprising at least one mixing assembly and a first heat exchanger, wherein the at least one mixing assembly and the first heat exchanger are fluidly coupled with the process fluid source so as to receive process fluid therefrom;
• a plurality of pumps fluidly coupled with the fluid preparation assembly so as to receive the process fluid therefrom and pump the process fluid into a wellbore, so as to perform a hydraulic fracturing operation in the wellbore;
• and
• a plurality of second heat exchangers fluidly coupled with the plurality of pumps, wherein the plurality of second heat exchangers receive a hot fluid from the plurality of pumps and return a cooled fluid thereto, the plurality of second heat exchangers being fluidly coupled with the process fluid source and the at least one mixing assembly, wherein the plurality of second heat exchangers receive the process fluid from the process fluid source and wherein the at least one mixing assembly receives the process fluid from the plurality of second heat exchangers, wherein the process fluid received from the plurality of second heat exchangers has a temperature that is higher than the process fluid in the process fluid source;
• and
• one or more control valves fluidly coupled with the first heat exchanger, the plurality of second heat exchangers, and with the process fluid source, wherein the one or more control valves are configured to combine heated process fluid received from the first heat exchanger and the plurality of second heat exchangers with a cooler process fluid, to control a temperature of the process fluid delivered to the wellbore, wherein the temperature is maintained below a boiling point of the process fluid.