| http://www.w3.org/ns/prov#value | - Thus, heat produced from the heater does not raise the temperature of fluids in the wellbore above 250?? C. In certain embodiments, heater 534 includes ferromagnetic materials such as Carpenter Temperature Compensator ???32???, Alloy 42-6, Alloy 52, Invar 36, or other iron-nickel or iron-nickel-chromium alloys.
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