Rowallan well spudEnsco 121 rig (image by EnscoPLC)

Rowallan well spud

ENI has spudded the Rowallan exploration well in the Central North Sea, UK.

Serica Energy has announced the spud of well 22/19c-G. Partners in the license are Eni UK Limited (Operator, 40%), JX Nippon Exploration and Production (U.K.) Limited (25%), Mitsui (20%) and Serica Energy (15%). The well is targeting the high-pressure, high-temperature gas condensate Rowallan prospect, which comprises a significant structural fault and dip-closed trap in the east of Block 22/19c in the Central North Sea (see map).

Location of the Rowallan prospect (from Serica Energy)

The target of the well are high-quality sandstones at both Middle Jurassic and Triassic levels, which are optimally situated for hydrocarbon charge from the direction of the nearby Monan and Mungo oil fields. Serica Energy estimates the net prospective resources to be approximately 20 to 60mmboe (P50 and P10 respectively) within block 22/19c.

In the event of success, there is additional upside potential provided by the nearby Dundonald and Sundrum prospects, which are geologically similar to Rowallan.

The well is expected to take around 140 days to drill.