» We are a small, efficient process engineering consulting company specializing in natural gas processing, liquefied natural gas (LNG), oil & gas production, and oil & gas transportation.


  • Conceptual Studies
  • Project Engineering
  • Capacity and Debottlenecking Studies
  • Process Optimization
  • Process Safety Management (PSM)
  • Pipeline Simulation and System Optimization
  • Fractionation Consulting
  • Heat Transfer Consulting

» Our fractionation consultant has over thirty-five (35) years of column design, simulation, and troubleshooting experience.

» Our heat transfer consultant has thirty (30) years of heat exchanger and fired heater design and troubleshooting experience


On-shore and Off-shore

  • Natural gas plants
  • C2 recovery
  • C3 recovery
  • Dew point control
  • Nitrogen rejection
  • Helium recovery
  • NGL fractionation
  • Liquefied Natural Gas (LNG)
  • Compressor Natural Gas (CNG)
  • Gas and product treating systems
  • Amine units
  • Glycol units
  • Molecular sieve dehydration
  • Membrane units
  • Caustic systems
  • Oil & gas gathering and production systems
  • Off-shore drilling and production platforms
  • FPSO topsides
  • Oil & gas pipelines
  • Compressor and pumping stations
  • Product storage terminals
  • Emerging technologies
  • Gas-to-liquids (GTL)
  • Process Safety
  • Processs hazards analysis
  • Flare and relief studies
» We have also been called upon to provide refining and fractionation consulting services for:

  • Crude units
  • Vacuum units
  • FCC main fractionators
  • Coker fractionators
  • Alkylation units (sulfuric)
  • Butamer units
  • Petrochemicals plants
» We have a very diverse background in the design, simulation, rating, and troubleshooting of the following equipment:

  • Distillation Columns/Fractionators
  • Compressors: Centrifugal, Reciprocating, Screw
  • Turbo-expanders
  • Heat Exchangers:Plate-Fin, Shell & Tube, Double-pipe, AirCoolers, Fired Heaters
  • Pumps: Centrifugal, Positive Displacement
  • Gas Turbines
  • Reactors
  • Pipelines
  • Process piping
Kent Pennybaker Kent Pennybaker
President, Consulting Process Engineer
Tom RuddyTom Ruddy
VP, Consulting Process Engineer
Dave SoderstromDave Soderstrom
Consulting Process Engineer
Reed KnobbeReed Knobbe
Consulting Process Engineer
Heidi CasperHeidi Casper
Consulting Process Engineer
Tien HoangTien Hoang
Consulting Process Engineer
Dan Forbes
Fractionation Consultant
Robin McGlynn
Heat Transfer Consultant
Charles Thomas
Process Consultant
Wendy BergWendy Berg
Office Manager
» We use the following process simulation software in conjunction with our own in-house software to assist us in the design and rating of plant processing equipment:


» River City Engineering was founded in 1994 by president Kent Pennybaker. The company has grown from three clients to nearly one hundred in the past two decades, and the six engineers on staff now continue to provide optimal service to these prestigious clientele. For more information on the history of River City and a few spotlight projects from the last twenty years of exceptional service, check out our timeline: