Nexen (CNOOC) spudded HP/HT exploration well, 22/21c-13, targeting the Glengorm prospect in licence P2215 on 26 August 2018. The target was initially drilled with 22/21c-12 and 22/21c-12A in 2017 but operations were wrapped up due to encountering technical difficulties. Therefore, Nexen returned for further operations with âProspector 5â (J/U) rig in 2018. The Glengorm target is a four-way Jurassic Fulmar and Freshney sandstone structure in the West Central Graben. On 22 January 2019 Nexen confirmed that it was in the latter stages of abandoning the well but operations were likely to be hampered by poor weather conditions. On 29 January 2019 Nexen, now known as CNOOC, announced that Glengorm had been a success. The well was drilled to a TD of 5,056 m through an excellent quality Upper Jurassic reservoir and encountered gas and condensate over 37.6 m net pay. Recoverable resources are in the region of 250 MMboe, and plans are to conduct further testing and appraisal drilling to assess the productivity of the reservoir and firm up resources. It was reported that the rig left the location on 5 February 2019.  The company initially used the Maersk âGallantâ (J/U) for the operations which were expected to take 147 days. The initial well, 22/21c-12, spudded on 12 July 2017 and all operations were being conducted as tight. On 4 August 2017 it was confirmed that the well had been re-spudded as 22/21c-12A. On 16 August 2017 it was understood that Nexen was facing some technical difficulties with the well. On 30 August 2017 Nexen reported that the well was completed on 25 August 2017 and the rig moved off location.   High pressures of 12,000 to 14,500 psi and temperatures of 326 to 392Â°F are expected. Planned TD (within the Pentland) is estimated at 5,030 m (16,503 ft) and top reservoir is estimated to be at 4,349 m TVDSS (14, 268 ft). Recoverable resources of 111 MMboe have been estimated. Dry hole costs for the well are in the region of GBP 32.9. Nexen has given the well a 45% Chance of Success. It is understood that when the platforms were installed on the nearby Gannet field, poor soil strength in the upper 40 m was experienced when installing the infrastructure.   Interest in P2215 is held by Nexen Petroleum U.K. Limited (now CNOOC) (50%), Euroil Exploration Limited (25%) and Total E&P North Sea UK Limited (25%).
022/21c-13 (Glengorm) HP/HT well, op. by Nexen (50%, Euroil 25%, Total 25%) in P2215 / block 22/21c, completed, Target Fulmar + Freshney sst. Gas discovery( estimated 250 MMboe) had been drilled to a depth of 5056 metres and intersected gas and condensate pay zones with a total thickness of 37.6 metres.