i3 Energy plc has let a 3-year contract to Petrofac Facilities Management Ltd. (PFML) for well engineering, operations management, and operator services for drilling of the Serenity appraisal well on license P.2358, Block 13/23c, in the Outer Moray Firth area of the UK continental shelf.
Serenity field was discovered by well 13/23c-10, drilled by i3 (100% interest) in late 2019. The well encountered a 20-ft thick oil-bearing sand (11 ft true vertical thickness) unit at the top of the Lower Cretaceous Captain sequence. The reservoir quality was high, with porosities averaging 24.5% and oil samples, recovered by wireline, having an API of 31.5°.
PFML holds an existing contract with Stena Drilling Ltd. for the use of the Stena Don harsh environment, dynamically positioned, semisubmersible drilling unit. i3 secured a well slot and expects the Serenity appraisal well to spud sometime between August and September 2022.
Reserves discovered at Serenity could be tied back to the planned development at Repsol Sinopec Resources UK-operated Tain field (awaiting sanction) with recoveries of about 8.5-20 million bbl, according to i3 Energy’s website. If further appraisal confirms the sand deposition and connectivity model, then oil in place would be about 197 million bbl and a standalone full field development would generate recoveries of 100 million bbl or more, according to the website. Alternate development options could include redeployment of an existing North Sea FPSO or tie-back to alternate existing infrastructure.