Dual screw compressor designs aims to cut emissions offshore Brazil

Offshore staff

OBERHAUSEN, GermanyPetrobras has ordered six two-stage screw compressor units from MAN Diesel & Turbo to go onto six FPSOs. Contractual partner IESA Oleo e Gas S/A has an option for two further units.

Each package compresses oil-associated gas in two stages, using a combination of SKUEL and CP oil-free screw compressor types, each of which represents one compression stage.

SKUEL screw compressors feature a horizontally split casing. They can draw in high volumetric flows at comparatively low discharge pressures. CP-type compressors, with vertically split casings, can generate roughly three times higher discharge pressures, but process lower volumetric flows.

In combination, the SKUEL stage pre-compresses the process gas but with increasing density, reducing its volumetric flow. The CP stage then increases the pressure.

In the Petrobras application, turbocompressors take the gas to a discharge pressure of more than 500 bar (7,252 psi), after which it is fed back into the borehole. Petrobras thereby avoids unnecessary emissions of carbon dioxide (CO2), common in the past as a result of flaring oil-associated gases.

2/15/2013

Did You Like this Article? Get All the Energy Industry News Delivered to Your Inbox

Subscribe to an email newsletter today at no cost and receive the latest news and information.

 Subscribe Now

Whitepapers

The Time is Right for Optimum Reliability: Capital-Intensive Industries and Asset Performance Management

Imagine a plant that is no longer at risk of a random shutdown. Imagine not worrying about losing...

Going Digital: The New Normal in Oil & Gas

In this whitepaper you will learn how Keystone Engineering, ONGC, and Saipem are using software t...

Maximizing Operational Excellence

In a recent survey conducted by PennEnergy Research, 70% of surveyed energy industry professional...

Leveraging the Power of Information in the Energy Industry

Information Governance is about more than compliance. It’s about using your information to drive ...