Central Graben
25 May 2017

Deviated appraisal well on Jackdaw targeting the Lower Kimmeridgian (J56) Upper and Lower Sandstone reservoirs. The main hole was junked at 18,548 ft in the Upper Sandstone with a fish in the hole. After a long well recovery programme the 30/2a-8Z sidetrack proved gas in the Upper Sandstone at 18,273 ft and the Lower Sandstone at 18,624 ft. A vertical gas column was proved from 17,491 ft TVDSS to a gas-water contact at 18,037 ft TVDSS. On test the Upper Sandstone flowed 20.885 mmcfgpd + 1,808 bcpd (24/64" choke).