Abstract: A system and a method of ascertaining and managing the properties of a circulating wellbore fluid is utilized, among other things, to achieve greater well control, reduce drilling and work-over expense, prevent reservoir damage and prevent personnel injuries which may result from extremely hot wellbore fluids. The system utilizes a network of sensors which detect fluid properties at various locations in the system, inputs the detected properties into a digital processor, and utilizes the processor to generate solutions for adjusting system components to realize a desired temperature and pressure profile for the fluid system.