More work needed on North Sea Liberator pilot well

Summary map of the Liberator field.
Summary map of the Liberator field.
(Courtesy i3 Energy)

Offshore staff

LONDON – The 13/23c-9 pilot well drilled by the semisubmersible Borgland Dolphin on the Liberator field in the UK central North Sea has reached TD at 5,818 ft (1,773 m) in the Valhall formation.

According to operator i3 Energy, the objectives of this pilot well are to allow a future development well to be positioned at an optimal location in the upper Captain sands channel in the southeastern part of the field.

Early petrophysical data from MWD tools suggest the targeted upper Captain sand has not been penetrated and is pinched out at the 13/23c-9 location. However, the lower Captain sand is present in the well and is below the estimated oil water contact.

Further well data will be needed to interpret and locate the key reservoir upper Captain channel edge. The next steps will be to obtain a vertical seismic profile in the well and to run a shear wave sonic log, after which the well will be P&A’d.


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