"The Dukas 1 exploration well has drilled to 2,997m measured...

"The Dukas 1 exploration well has drilled to 2,997m measured depth in the Gillen formation. Drilling has been delayed several days whilst repairs are conducted to the rig’s top drive. Drilling is expected to resume by around 22 June. The estimated timeframe to reach the primary target, the Heavitree formation, is one to two weeks from now assuming no further downtime. The basement below the Heavitree formation is a secondary target and is planned to be evaluated as well."
Ann,21/06/19. That may be why there is a delay, does happen sometimes.