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During 2007, Vahterus executed a gas-cooling project in the Gulf of Mexico.

Project:

During 2007, Vahterus executed a gas-cooling project in the Gulf of Mexico. The required heat exchangers would form part of the Topsides of the end client’s platform, designed to process 25,000 BOPD and 50 MSCFD of gas, with the capacity to be upgraded to handle 100 MSCFD.

Challenges and solutions:

Traditionally the industry would utilize tubular technology to perform many operations, notably high pressure applications, but it was clear they now have a viable alternative with Vahterus PSHE: Offshore, where space and weight are at a premium, PSHE can provide significant advantages, as well as installation and operational benefits.

Vahterus supplied the client with two of the Main Gas Compressor Coolers:

2nd Stage Suction Cooler

  • PSHE 4HH-264/1/1 (Openable Model)
  • Design Pressure: 680 psi (46.9 bar)
  • Design Temperature: -20 to 350 °F (-29 to 177 Celsius)
  • Cooling Hydrocarbon Vapours using seawater at 75°F (24 Celsius)

3rd Stage Suction Cooler

  • PSHE 4HH-252/1/1 (Openable Model)
  • Design Pressure: 1360 psi (93.8 bar)
  • Design Temperature: -20 to 350 °F (-29 to 177 Celsius)
  • Hydrocarbon Vapours using seawater at 75 °F (24 Celsius)

Based on the use of seawater as the cooling medium, titanium plates were utilised for the 2nd Stage Cooler, and Hastelloy plates used for the 3rd Stage Cooler (based on the higher design pressure requirement). The gas was processed on the shell side of the exchangers, which were manufactured from carbon steel and designed according to ASME code.

Benefits provided by Vahterus PSHE:

  • Small footprint
  • Compact physical size and weight benefits
  • Wide ranging pressure and temperature capabilities
  • The ease of installation and operation

“Vahterus was a pleasure to work with. Even with the challenges of a transatlantic order, Vahterus was my best vendor on the project in terms of customer service and in meeting their commitments. I look forward to working with Vahterus on future projects.” -Mustang Engineering