Abstract: A high pressure horizontal vessel separator for separating petroleum mixtures. An inlet on one end of the vessel and gas, water, and oil outlets provided on an opposite end, with each outlet having a vortex breaker. The inlet communicating with a momentum absorbing, flow distributing inlet diverter that causes the gas to separate into the top of the main section of the vessel and the fluids to flow to the bottom of the main section. Sediment collects in the bottom of the main section and is removed via a sand trap. Water remains at the bottom of the vessel, and the fluids flow through a perforated baffle then through a bent lamella demister before entering a settling portion of the vessel where gas and water exit via the gas and water outlets and oil flows over an oil weir and exits downstream of the weir via the oil outlet.

Abstract: A horizontal heater treater tank for separating petroleum mixtures. An inlet on one end of the tank and gas, water, and oil outlets provided on an opposite end, with each outlet having a vortex breaker. The inlet communicating with a c-shaped inlet diverter where gas separates into the top of a heating section and the fluids flow to the bottom of the heating section. Sediment collects in the bottom of the heating section and is removed via a sand trap. Water remains at the bottom of the tank, and oil completely surrounds a horizontally oriented u-shaped firetube which heats the oil. The fluids flow through a perforated baffle then a bent lamella separator before entering a settling portion of the tank where gas and water exit via the gas and water outlets and oil flows over an oil weir and exits via the oil outlet downstream of the weir.