Jackdaw gas field is a large offshore natural gas field which lies in Blocks 30/02a, 30/02d and 30/03a in the central North Sea,[1] 150 miles east of Aberdeen.[2] It is wholly owned by BG International Limited, which has been a part of the Shell Group companies since 2016.[3]
The Jackdaw field is being developed as a 'not permanently attended' platform in a water depth of 78 m, 30 km south east of the Shearwater installation to which fluids from Jackdaw are exported.
The Jackdaw reservoir
The reservoir is in the Upper Jurassic Heather Formation and is compartmentalised into two separate reservoir units. The properties of the reservoir and the fluids are as follows.[4] The Jackdaw field is classified as an Ultra high pressure high temperature (uHPHT) field. Such fields are defined as having a reservoir pressure greater than 12,500 psi, and a temperature exceeding 166 °C.