The Indirect Oil Field Heater is a Water Bath Heater, capable of Heating up to 10,000 bpd of Hydrocarbon Oil with Gas Up to 60 Mm Scfd from 0�C to 70�C for De Waxing and further processing. The maximum heat transfer is 2 mm Btu/Hr. The Water Bath Heater has Coiled Tubes of 4-Inch size, carrying the Hydrocarbon Oil with gas in & out of the Water Bath with Choke & Manifold for flow control & bypass of oil. The tubes have a capacity to withstand a maximum pressure of 5000 Psi.