Extracting oil and gas from the bottom of reservoirs has been an intractable problem for the oil and gas industry. Companies have tended to move on once the challenge of extraction became too great. Now, thanks to Statoil’s new subsea gas compression system, it is possible to recover deep oil and gas cost-effectively.
The Norwegian energy company’s two new subsea gas compressors are the first of their kind in the world. Resting on a seabed in 300 metres of water in Statoil’s Åsgard field, they maximize gas recovery and look set to significantly prolong the lifetime of production in the Midgard and Mikkel reservoirs.
We chose SKF for its strength in bearings. It is the only company on the market with such a qualified product.
Torstein Vinterstø, Statoil’s project director for Åsgard
Recovery from the two Norwegian Sea reservoirs is expected to increase by at least 20 percent, adding more than 300 million barrels of oil equivalent to the field’s output. Without the new solution, the reservoirs would have closed down prematurely.
Traditionally, gas compression has taken place on platforms or onshore at a distance from the source. Situating a compressor as close to the well as possible is a more energy-efficient alternative. It saves space, cuts down on the need for maintenance and, because it is unmanned, can be operated remotely, and removes the need for constant supervision and personnel.