Statoil’s Troll B has produced 1 billion boe since coming onstream two decades ago, with a further eight to 10 years of oil production expected, the Norwegian giant revealed today.
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Image of Troll B, from Statoil / Øyvind Hagen. |
More, when combing efforts from Troll B and Troll C, the two have been the largest oil producer on the Norwegian continental shelf for the last three years.
Troll B, which came online on 19 September 1995, is east of the oil province, some 100km west of Bergen, and around 50km from the Oseberg field center. The distance between Troll A and Troll B is approximately 20km.
The Troll field is divided into three main areas: Troll East, which contains two-thirds of the gas reserves on Troll, in addition to hosting the Troll A and Troll-Oseberg gas injection project (TOGI); the Troll Oil Gas Province that contains one-third of the Troll gas reserves as well as a 13m thin oil layer; and Troll Oil Province mainly contains oil.
Oil on the Troll field is found in thin oil columns and efficient recovery has required innovative solutions and technology. The result proves that the effort pays off: In fact, Troll B has soon produced three times more than the expected volume stated in the plan for development and operation (PDO), Statoil said.
In 1995 when Troll B came online, it consisted of nine oil wells and one gas injector, which had been pre-drilled.
“For more than 21 years the platform has delivered high oil volumes with excellent regularity,” Statoil said. “The average daily oil production has been 20,600 cu m. In 2016 the average will be 12,000 cu m/d, an impressive rate for a 21-year-old ‘oil lady’.”
According to estimates from Statoil, based on the average oil price for the years in production, 1 billion bbl from Troll B has given a revenue of nearly US$31 billion (NOK 268 billion), with some 75% of the money channelled back to the Norwegian state through direct ownership and taxes.
”The combined oil and gas produced from the Troll field so far represent values worth NOK 1300 billion (US$149 billion). After 20 years of production Troll will probably be the highest oil producing field on the NCS for the fourth year in a row. Troll B is delivering high regularity and good HSE results, and this is the result of dedicated employees doing a fantastic job every day, both offshore and onshore," Lars Høier, vice president of Troll operations said.
Statoil is forecasting an additional eight to 10 years of oil production on the platform.
During the past years Troll B has had a "flat" production profile thanks to an efficient and active drilling program as well as technology development and implementation, the company said.
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