Mar. 2012 - Det norske received consent to use the Transocean Barents (UDW semisub) to drill the Jette field. A plan for development and operation for Jette was approved in February 2012. Det norske will develop the field with a seabed facility tied into the Jotun field. Jette’s planned production start is during the first quarter of 2013. The water depth of the site is 417 feet (127 meters). Drilling is expected to commence during the second quarter of 2012 and last about 155 days.

Feb. 2012 - Det norske received approval to proceed with the development of Jette, which contains 14 million barrels of oil equivalents, based on a 30 percent recovery rate. Daily production during the first year will constitute approximately 14,000 barrels. The estimated development costs of Jette amount to approximately 2.5 billion NOK. Production is scheduled to commence during Q1 2013. The field will be developed and operated by Det norske with day-to-day operations overseen by ExxonMobil. Det norske’s partner in the Jette development is Petoro.

Oct. 2011 - Det norske has signed contracts with Cameron, Subsea7 and Aker Solutions to provide services for the Jette development in the Norwegian sector of the North Sea. Cameron will supply the subsea production system for the field and will fabricate the X-mas trees and protective structures. Subsea7 will engineer, procure, fabricate and install a 6-kilometer-long flexible flowline and jumpers, and install a 6-kilometer-long integrated services umbilical, X-mas trees and protective structures. The company will also contribute diver-assisted tie-ins. Aker Solutions will fabricate the 6-kilometer-long integrated services umbilical. Engineering and fabrication began immediately, and offshore operations will take place in late 2012. Jette is located in Production License 027 D offshore Norway in 417 feet (127 meters) of water. The partners in the field include Det norske (operator, 63.3%), Dana (19.2%), Bridge Energy (6%) and Petoro (11.5%).

Sep. 2011 - Det norske has selected Aker Solutions to provide a subsea umbilical for the Jette development in the Norwegian sector of the North Sea. Det norske's initial order is for four miles (six kilometers) of static electro-hydraulic stainless steel umbilicals. The umbilical will include electrical and hydraulic functions, in addition to a three-inch gas lift line and methanol injection. The equipment is slated for delivery in 3Q 2012, and first oil is targeted for 1Q 2013. Jette is located in Production License 027 D offshore Norway in 417 feet (127 meters) of water. The partners in Jette are Det norske (operator, 63.3%), Dana (19.2%), Bridge Energy (6%) and Petoro (11.5%).

Sep. 2011 - Det norske submitted a plan for development and operation (PDO) for the Jette (formerly Jetta) field to the Minister of Petroleum and Energy, Ola Borten Moe, Monday. The Jette field is considered a small field located in the North Sea, just east of the Jotun field. Development of Jette entails two horizontal wells, tied-back to the Jotun FPSO. Jette, containing nearly 14 MMbbl of oil equivalents, is projected to produce roughly 14,000 barrels. First oil is expected to commence in 1Q 2013. Jette is located in Production License 027 D, offshore Norway in 417 feet (127 meters) of water. The partners in Jette are Det norske (operator, 63.3%), Dana (19.2%), Bridge Energy (6%) and Petoro (11.5%).

Dec. 2009 - Det norske has acquired a 13 percent ownership interest in production licenses 027D and 169C from Exploration and Production Norway AS (ExxonMobil). These licenses are located south of the Jotun field where recently oil was discovered in wells, 25/8-17 and 25-8-17A The parties have also sought the approval of the Ministry of Petroleum and Energy of a transfer of operatoship for license 027D to Det norske, subject to approval by the management committee of license 027D. With the completion of the transfer, Det norske will be operator around the Jotun Field. Det norske is heading a project on behalf of PL 027D, 169C and 504, with the ambition to see if it is possible to commercialize the Jetta discovery and possibly other prospects in area, via the Jotun installations.

Nov. 2009 - Dana Petroleum announced oil was discovered in the Jetta sidetrack well (25/8-17 A) in Production License 027 D, offshore Norway. The operator is concluding the drilling operations on the wildcat well and the new sidetrack well. Drilling was performed by the Bredford Dolphin, a 2nd generation semisubmersible, in a water depth of 417 feet (127 meters) to prove the presence of petroleum in Paleocene age reservoir rocks in the two wells, which was successful, but the reservoir had less thickness than prognosed. The data collection process to determine if Jetta is a commercial success has been completed.

Oct. 2009 - Dana Petroleum announced an oil discovery was made on the Jetta prospect offshore Norway, which is located nearby the producing Jotun oil field in the North Sea. Det norske (47%) will serve as the operator during the drilling operations of the prospect, but ExxonMobil (23%) serves as the operator of the production license and partners on the prospect with Dana (30%). The partners discovered oil in well 25/8-17 in the Jetta prospect using the Bredford Dolphin, a 2nd generation, midwater semisubmersible. After drilling commenced, data was gathered from the targeted reservoir zones, including pressure tests and oil samples.

Oct. 2009 - Det norske has started drilling the Jetta Prospect in Production License 27D, south of Jotun. Jetta can potentially be developed quite quickly since it lies close to existing infrastructure on Jotun. ExxonMobil serves as the operator of the license; Det norske holds a 50% interest in Jetta. Det norske has an extensive drilling program, and is currently drilling three exploration wells. The Jetta Prospect will be drilled using Bredford Dolphin semisub with Det norske as drilling operator.

Jul. 2009 - Det norske has agreed to lift its stake in the PL 027D Jetta prospect, located in the Norwegian North Sea, from 35% to 47% by taking on a 12% stake from ExxonMobil, prior to drilling operations. In return, Det norske will carry ExxonMobil's 13% stake in the drilling operation. The Jetta prospect is located next to the producing Jotun field, and the semisub Bredford Dolphin is scheduled to spud the well in mid−August. A discovery could be produced from existing installations on the Jotun field and thus a fast track development of potential reserves is possible.

Jul. 2009 - The NPD granted ExxonMobil a drilling permit for wellbore 25/8-17 on Block 25/8 in PL 027 D in the Norwegian North Sea. Wellbore 25/8-17 will be drilled from the Bredford Dolphin semisub at position 59 degrees 23' 32.04" North and 02 degrees 20' 1.95". PL 027 D was awarded on December 7, 2007 as a supplement to the 1st licensing round. This is the second well drilled in the production license, the first well 25/8-16 S, Eitri, spudded on April 10, 2009.