Delineation of Edvard Grieg field in North Sea
Lundin Norway AS, operator of production licence 338, is about to complete drilling of appraisal well 16/1-18 on the Edvard Grieg oil field in the central part of the North Sea.
The field was proven in Cretaceous, Jurassic and Triassic reservoir rocks in the autumn of 2007. Appraisal well 16/1-18 was drilled 2.4 km east of where the facility will be located.
Edvard Grieg field
The objective of the well was to delineate the south-eastern part of the Edvard Grieg field in order to optimise the drainage strategy and to determine the best possible location of production wells in this area. Well 16/1-18 encountered a 62 m gross oil column in Upper Jurassic conglomerate sandstone, where the top 43 m have very good reservoir properties and the lower 19 m have good reservoir quality. The oil/water contact was not encountered.
Data sampling
Extensive data acquisition and sampling were carried out. Four formation tests were carried out, one DST and three mini DSTs. The formation test (DST) was carried out in a 13 m interval in the lower part of the oil column in reservoir of good quality. The test showed a maximum rate of 130 m3 of oil per flow day through a 28/64-in. nozzle opening and showed good flow properties from the entire oil zone. The best formation test (mini DST), from the top zone, showed very good flow properties. The results from the well will be very useful in planning production wells in this part of the field.
Exploration wells
This is the ninth exploration well in production licence 338 and the sixth exploration well on the Edvard Grieg field. The licence was awarded on 17 December 2004.
Appraisal well 16/1-18 was drilled to a vertical depth of 2361 m below the sea surface and terminated in granite basement. The well will be permanently plugged and abandoned. Water depth at the site is 109 m.
The well was drilled by the Island Innovator drilling facility, which will now proceed to production licence 492 in the Barents Sea to drill appraisal well 7120/1-4 S on the 7120/1-3 (‘Gotha’) oil discovery, where Lundin is the operator.
Adapted from press release by Katie Woodward
Read the article online at: https://www.oilfieldtechnology.com/drilling-and-production/13052014/lundin_norway_drilling_edvard_grieg_oilfield_707/
You might also like
Rhino Resources and Halliburton to sign contract for integrated deep-water services offshore Namibia
Halliburton Company has announced it has been awarded a deep water integrated multi-well construction contract by Rhino Resources, a private company engaged in both onshore and offshore energy exploration in Africa.
