Norwegian oil and gas firm Statoil has started production at its Fram H-North and Svalin C fields in the North Sea.
Located in the Troll area, Fram H-North is estimated to hold about ten million barrels of recoverable oil equivalent.
Svalin C, which is situated in the Grane area, is estimated to contain more than 30 million barrels of oil equivalent.
Statoil senior vice president for operations West Kjetil Hove said: "Fram H-North and Svalin C are contributing new and important production for Statoil and its partners on the Norwegian shelf.
"These projects also expand our possibilities for developing good solutions for oil and gas production from the areas in which they are located."
The Norwegian Ministry of Petroleum and Energy approved the plan for the development and operation (PDO) for Svalin C, which features a subsea facility with two wells, approximately 6km south-west of the Grane platform, in November 2012.
Fram H-North is exempted from having to submit a PDO in line with the ministry's guidelines.
The partners made the investment decision for Fram H-North in mid-2012.
Fram H-North is a standard subsea template that can house four wells and is linked by about 5km of pipeline and umbilicals to the existing subsea template on Fram West A2.
Statoil senior vice president for projects Anders Opedal said: "We have succeeded in delivering two new high-quality projects within budget.
"We set lofty goals as regards implementation time for the fast-track development projects and we were able to reduce the time by about 40% on average. Svalin C and Fram H-North contribute towards our goal."