Mixed results reported from latest Edvard Grieg well offshore Norway
The semsiubmersible Island Innovator has completed appraisal drilling and testing of well 16/1-18 on the Edvard Grieg field in the central Norwegian North Sea.
Lundin Norway discovered the field in 2007. The appraisal well was drilled in 109 m (358 ft) of water, 2.4 km (1.5 mi) east of the location for the new Edvard Grieg production platform in license PL338.
The main aim was to appraise reservoir properties in the southeastern part of the field to optimize drainage strategy and production drilling in this area.
The well encountered around 62 m (203 ft) of Upper Jurassic oil-bearing sandstone. The rig then performed a drillstem test (DST) in a 13-m (43-ft) perforation interval in the lowest part of the oil-bearing zone. The test flowed more than 800 b/d through a 28/64-in. choke, revealing good permeability and vertical communication throughout the entire 62-m oil zone, Lundin said.
A mini-DST in the upper oil-bearing zone also confirmed good quality reservoir properties.
Ashley Heppenstall, Lundin’s president and CEO, said reservoir quality was better than results from previous wells. “This provides upside in relation to the resource contribution from this reservoir where we previously assumed low recovery factors. The lack of sandstone reservoir at this location is however disappointing.
“At this stage I expect the impact on Edvard Grieg resources to be neutral with upside remaining from the conglomeratic reservoir.”
Island Innovator next heads to PL492 in the Barents Sea to drill appraisal well 7120/1-4 S on Lundin’s Gotha oil discovery.