Shirley – P2525

Shirley – P2525

Block 16/27d

Operator:Chrysaor Production (UK) Limited
Partners:Chrysaor Production (UK) Limited 30%; Zennor Exploration Limited 20%; Ithaca Energy (UK) Limited 25%; Spirit Energy North Sea Limited 25%

Facts & Figures

AREA: 161.44 km2
SHARE: 20%

This block was awarded in the UK 32nd licensing round award, and contains the 16/27a-3 Shirley Lower Cretaceous gas-condensate discovery, made by Phillips in 1982. The well encountered an extremely thick Britannia Sandstone reservoir that was hydrocarbon-bearing from top to base, but failed to flow on DST. Despite relatively low porosity and permeability, formation damage is considered to be the most likely cause of the DST failure as similar low-perm reservoirs produce at commercial rates in the nearby Andrew Field.