19.05.2003 - In 1997 MAN Turbo received an order for a compressor high pressure application. The compressor station consists of two units to feed CO2 in the front end station of a pipeline starting in a coal gasification plant in North Dakota, USA. The pipeline routes from North Dakota over the canadian boarder to Saskatchewan oil fields, where the CO2 is injected into oil wells for enhanced oil recovery. The total length of this 14 inch pipeline is 205 miles. There are no booster stations foreseen in between. The CO2 gas is injected into the oil well directly out of the pipeline, which requires a high pressure at start.

The Enhanced Oil Recovery (EOR) is the mixing of crude oil and CO2 down in the wellbore. Under certain pressure and time crude swells and reduces viscosity, allowing a greater percentage of the hydrocarbons trapped in the well pore volume to be recovered. The EOR is much more complex, but pays back and extends the economic life of an oil reservoir. For the particular oil well in Saskatchewan the lifetime of the reservoir was prolonged by about 15 years.

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