Oseberg Celebrates 20th Anniversary, Production On Stream Until 2031


Oseberg Field Center
(Click to Enlarge)

Oseberg
(Click to Enlarge)

Minister of petroleum and energy Terje Riis-Johansen visited the Oseberg field center yesterday, November 25. The minister helped celebrate the 20th anniversary of petroleum and gas production from the field centre. On December 1, it will be exactly 20 years since the Oseberg field center in the North Sea came on stream.

Great Values

The field center has created more than NOK 400 billion in values and injected more than NOK 180 billion into the State purse in the form of taxes since the start. Almost the same values will be realized through the rest of the field life.

"The Oseberg field is a pioneer within improved oil recovery and has been an important contributor to the development of a competitive Norwegian oil industry over the past 20 years. There are still great values left in the Oseberg area," Riis-Johansen said.

The new executive vice president for Exploration & Production Norway, Oystein Michelsen, acted as host Michelsen knows the Oseberg field center better than most people; he has background both as offshore installation manager for the Oseberg field center and as the head of the entire Oseberg area.

"We are proud of our achievements on the Oseberg field. We have demonstrated a willingness and ability to employ new technology, which has enabled us to achieve a record-high rate of recovery of 75 percent for the main reservoir," Michelsen said.

Extended Life

The field center life has been extended several times as new technology and new methods have made it possible to enhance the rate of recovery on the field.

"In the 1983 development plans the reserves were estimated at about 1 billion barrels. Through 20 years on stream we have more than doubled the field reserves. Today the reserves are estimated at 2.4 billion barrels of oil," Michelsen said.

Extensive use of gas injection, sophisticated seismic systems and constant development of new drilling technology on the field center have contributed to the increased reserve estimates.

Increased Gas Production in the Future

Whereas the life of the field was initially expected to end in 2017, StatoilHydro now expects the field to be on stream until 2031. A gradually increasing percentage of the production will consist of gas.

Also environmental improvements have been made since the start-up. All produced water on the field center is now being sent back to the reservoir located 1,000 meters below the seabed.

To Mongstad

After the offshore trip the minister continued to Mongstad for a tour and presentation of the plant.
 

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