Lundin Petroleum AB reported its Gohta appraisal well 7120/1-4s drilled in PL492 in the Barents Sea offshore Norway encountered 10 m of Upper Permian limestone conglomerate with good reservoir properties overlying fractured limestones of limited reservoir quality.
The well was spud earlier this year with the intention of testing the reservoir properties and hydrocarbon potential of the Permian carbonates in the Gohta karst Roye formation and the overlying Kobbe formation sandstones (OGJ Online, May 23, 2014).
The well is in the western part of the Gohta discovery in PL492, 5.3 km northwest of the original Gohta discovery (OGJ Online, Oct. 2, 2013).
The company has carried out data acquisition and sampling in the reservoir, which included conventional coring and fluid sampling. Both pressure and fluid properties indicate communication between the reservoirs in the 7120/1-4s and 7120/1-3 wells on the Gohta structure.
A production test of the 10-m thick gas condensate zone produced 26.4 MMcfd of gas and 880 b/d of condensate. Pressure build-up analysis showed the test draining an area within a 1,000-m radius.
An attempt to test a 50-m interval starting 23 m below the estimated gas-oil contact produced a rate 6.4 MMcfd of gas.
The well was drilled to a total depth of 2,490 m below sea level in 331.5 m of water. The company said the well will now be permanently plugged and abandoned before the Island Innovator rig is moved to PL609 where Lundin Norway will spud exploration well 7220/11-1.
Lundin Norway holds a 40% working interest in PL492 and serves as operator. Its partners are DNO ASA and Noreco Norway AS, which hold respective interests of 40% and 20%.
