Abstract: A method of oil water phase separation through heat using a flameless heat source in an above ground process tank with the desired separation level of 0.5% basic sediment and water remaining in the oil. The tank having a flameless heat source installed within an internal chamber inside the tank. The above-ground process tank may form part of a system for processing a produced fluid from a petroleum wellhead upstream of a sales line or tank. An oil pipe network discharges the produced fluid from the wellhead into the tank interior volume. The flameless heat source generates radiant heat in the internal chamber which is conducted by the chamber wall into the tank interior volume to separate the oil phase from the water phase of an emulsion in the produced fluid. The oil pipe network discharges the separated oil phase from the tank interior volume to the sales line or tank.

Abstract: An above-ground storage tank defining an interior volume includes an internal containment chamber and a flameless heat source within the containment chamber to heat the tank interior volume.

Abstract: A double-walled above-ground storage tank includes a primary tank and a secondary tank, and an interstitial space; an containment chamber formed by a primary chamber wall and a secondary chamber wall, forming a chamber interstitial space therebetween, and an exterior door assembly; and at least one pipe and valve assembly wherein the pipe originates in the tank interior volume and the valve is disposed within the chamber.