Equinor spudded appraisal well 10/1b-6 on the abandoned Frigg field on 1 November 2019. The company hoped the appraisal well would confirm volumes in place with a view to mature the field for re-development in the future. Frigg is a cross border field with the UK acreage held in P2343, awarded in the 30th Licensing Round. The company used the "West Phoenix" S/S rig for operations. On 4 December 2019 it was confirmed that the well was plugged and abandoned on 1 December 2019 and the rig has moved off location.  Frigg was discovered in 1971 and is a giant Tertiary gas field which straddles the UK/Norwegian median line and was thought to be the third largest gas field after Troll and Leman in the North Sea. The field was developed in three phases. Phase I consisted the installation of a concrete drilling platform, CDP1, a concrete processing platform, TP1, a quarters platform, QP, and a flarestack, FP on the United Kingdom side of the field. Phase I production started in 1977. Phase II comprised the installation of a steel drilling platform, DP2 and a concrete processing platform, TCP2 on the Norwegian side of the field. The accommodation platform is bridge-linked to TCP2 via TP1 and contains the central operations and control room. Phase II started production in 1978. Phase III comprised the installation of three turbine-driven compressors on the TCP2 platform to compensate for reduced reservoir pressure. These facilities were put into operation in the autumn of 1981. Equinor confirmed in May 2019 that it was evaluating plans to redevelop the cross-border field utilising new technology. The project is being evaluated as part of the NOAKA (North of Alvheim, Krafla and Askja) development with any redevelopment of Frigg expected to utilise a subsea field development.  Interest in P2343 is held by solely by Equinor.
United Kingdom, P2343