Horizontal Heater Treater

The Horizontal Heater Treater utilizes heat and mechanical separation enhancement devices, such as plate packs, baffles and electrostatic grids.

The Horizontal Treater is designed to efficiently treat large capacities of crude oil by removing water and emulsion from the wellstream, preparing the treated oil for delivery. Our unique shroud and distributor provide increased capacity, efficiency and separation. Exterran’s pre-engineered design and adherence to the latest ASME standards ensures consistent and reliable construction, as well as quick delivery, optimal performance, and safe operation.

Key Benefits

  • Expedited production drawings available as early as 4-5 business days for faster planning
  • Single well or multi well designs available along with full pad well designs
  • Robust skid design and commitment to service help bring operations online quickly
  • Cost-effective maintenance
  • Installation and commissioning of the units to facilitate and speed startup
  • Industry-leading delivery to speed startup

How it Works

Produced fluids enter the treater vessel through the top inlet and flow down into the shroud surrounding the firetube. Exterran’s unique shroud and heat-retaining baffle allow for more efficient and even heating of the crude/emulsion.

Gas released from the incoming stream collects in the upper section and exits the vessel through the gas back-pressure valve. Freewater released from the incoming stream collects in the lower section of the vessel. Heating extracts additional water from the crude, and the produced water is then discharged through the water outlet.

The crude and remaining emulsion flow from the heater section into the distributor, which provides enhanced dispersal and separation above the oil/water interface.

The treated oil flows into the settling section and is then directed to the oil outlet for delivery to storage or pipeline.

Standard Features & Options

Standard Features

  • Inlet oil/emulsion shroud
  • Removable firetube and stack
  • Flame arrestor
  • High-efficiency burner and pilot assembly
  • Temperature controller
  • Tubular liquid level gauge assemblies
  • Pressure gauge with isolating valve
  • Oil level controller and dump valve
  • Water level controller and dump valve
  • Pressure relief valve
  • High temperature shutdown controller
  • Gas back-pressure valve
  • Fuel gas scrubber with high-level shutdown
  • 18 inch manway


  • Pilot flame-out safety control (BSL)
  • High/low liquid level shut off (LSHL)
  • Sand jet system
  • Stack arrestor
  • Anode
  • Skid mount
  • Insulation
  • Ladder and platform
  • Cold weather housing
  • Internal coating
  • Sour gas service built to the NACE standard

Horizontal Heater Treater

Tech Sheets

File Name A4 Letter
Horizontal-Treater-English Download PDF