Oil flows at Wressle development, onshore UKWressle - Photo: Union Jack

Oil flows at Wressle development, onshore UK

Operations to recomplete the well and reperforate the Ashover Grit reservoir interval have been completed successfully.

Union Jack Oil, a UK focused onshore hydrocarbon production, development and exploration company, provides a positive update on operations at the Wressle oilfield development. The development is located within North Lincolnshire licences PEDL180 and PEDL182 where the Company holds a 40% economic interest.

Operations to recomplete the well and reperforate the Ashover Grit reservoir interval have been completed successfully, safely and on schedule.

Following the re-perforation and its successful communication with the Ashover Grit reservoir interval, free-flow of oil has commenced and the well has been placed on continuous 24 hour test production. The well is now in the normal clean-up phase as the well is carefully brought on-stream.

Location map of Wressle discovery.

The Wressle-1 Prospect was drilled in 2014 and was defined on proprietary 3D seismic data. The well was drilled as a deviated well to a total depth (TD) of 2,240 metres and was designed to intersect a number of prospective Upper Carboniferous age sandstone reservoirs in a structurally favourable position near the crest of the Wressle structure. Pre-drill gross mean Prospective Resources at Wressle as calculated by Egdon were estimated to be 2.1 million barrels of oil.

The Wressle-1 well has now flowed oil and gas from three separate reservoirs, the Ashover Grit, the Wingfield Flags and the Penistone Flags.

Additional prospectivity

The area offers more prospective reservoirs, with the Broughton North Prospect (PEDL182) having been mapped primarily from a high quality 3D seismic data set acquired during 2012.

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