Oil and gas exploration and production firm EnCore Oil has reported that the Cladhan appraisal well 210/30a-4y, the third of a four-well program located in UK North Sea blocks 210/29a & 210/30a, has reached total measured depth of 12,615ft.

The well was drilled as a side-track into the Central Channel prospect that lies to the south of the current Cladhan discovery.

The well encountered two Upper Jurassic reservoir sand sequences with a gross true vertical thickness (TVT) of 191ft and a net of 40ft TVT.

According to the company, log and pressure data indicates that the sands are water wet, and it would appear from the pressure data that the sands in the Central Channel area, although over pressured, are in a separate pressure regime from the main Cladhan accumulation.

The group will now drill the final side-track of this drilling phase, about 150ft up dip of the previous oil bearing 210/30a-4 well, with the objective of gaining further information on the southern sector of the Northern Channel area where the original Cladhan discoveries have been made.