Offshore Oil + Gas Production

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Oil companies are exploiting harder-to-reach reservoirs and keeping existing assets operating much longer.

As offshore oil and gas exploration moves to deeper waters, safety, reliability, environmental concerns, and cost play vital roles in the production, transmission, and refining of oil and gas products. We help to minimize the concerns of our offshore oil and gas clients by delivering safe, reliable, and efficient products such as DATUM® centrifugal compressors, reciprocating compressors, steam TG sets, and world-class service and support solutions.


Dresser-Rand offers an extensive array of compression solutions to meet the wide range of duties and applications such as gas lift, CO2 injection, natural gas injection, export gas, CO2 recycle, and low-pressure / high-pressure separation.

DATUM® Centrifugal Compressors

  • Cartridge concept – modular design minimizes downtime on-site to accommodate changing reservoir conditions and field duties
  • Various drive options – electric motor, gas turbine and steam turbine drives
  • Driver flexibility – available with our own gas and steam turbines as well as other manufacturers’ turbines
  • For many applications, the DATUM compressor is able to meet the process requirements in a single back-to-back casing, as opposed to multiple casings, because of its higher pressure ratio capability per case
  • Reduced weight and footprint
  • Inherently stable rotordynamics ensure high availability and reliability

Reciprocating Compressors

Dresser-Rand has more than 60 years experience supplying reciprocating gas compressors for offshore applications including FPSO, TLP, SPARs, etc. These have primarily been electric motor-driven, horizontally-opposed, high-speed reciprocating compressors operating at medium speeds.

  • Eight different frame sizes with 2-4-6 crank-throws, allowable rod loads from 15,400 lbs (68.5 kN) to 90,000 lbs (400 kN) and HP up to 11,000 (8,206 kW)
  • Cylinders up to 28″ (711 mm) in diameter with pressures up 10,000 psig (689.5 bar)
  • Slow-speed, longer stroke process reciprocating compressors are also available with up to 10 crank throws and 45,000 HP (33,570 kW)

Dresser-Rand engineers and manufactures its own compressor valves and regulation devices as well as a full suite of capacity control solutions.

Reliable, Efficient Power for FPSOs

Floating production, storage, and offloading vessels (FPSOs) are used for the offshore production and storage of oil and gas products. They can transfer oil and gas from platforms or extract it from the sea floor and offload it onto tankers, eliminating the need for an infrastructure of pipelines for transportation and lowering overall costs.

Dresser-Rand has supplied more than 40 steam turbines (up to 27 MW) for generator sets that ensure reliable and efficient power for many of the world’s leading FPSO operators worldwide. Not only is the technology required to power the massive FPSO vessels critical, but the generator sets must be designed and manufactured for on-board use.

Steam TG Sets

Dresser-Rand offers a complete range of turbine generator (TG) sets in sizes from 0.5 MW to 100 MW. The sets accommodate inlet temperatures to 566 °C, inlet pressures to 138 bar, and exhaust pressures from 55 bar. A variety of direct-drive or geared configurations are available —

  • Condensing or non-condensing
  • Single or multi-valve
  • Single or double-automatic extraction
  • Mixed pressure designs

Exhaust flanges can have an axial, side, upward, or downward orientation depending on the power and frame selection. The TG unit is usually designed as a single package incorporating the oil tank and all auxiliary components and interconnecting pipes. This reduces installation time and complexity and allows the complete package to be assembled and tested at the factory before dispatch. TG sets can be designed to exhaust to the ship’s existing condensers; alternatively, Dresser-Rand can supply the condenser.