Malory Unit – Everard 24%, Perenco 76% (Op)
Licences P844 (48/12d) 25%
P461 (48/12c REST & 48/12f REST) 15%
Status – Producing
The Malory Field was discovered in 1997 by Mobil operated well 48/12d-9. It encountered a 76m gas column in good quality Rotliegendes Leman Formation sandstones, with a gas down to at the top of the Carboniferous. A DST flowed at 30.6 mmscf/d and core data confirms permeabilities up to 1651 mD.
The field was developed via an unmanned platform tied back via the Excalibur export pipeline connecting to the Lancelot Area Production System (LAPS) at the Lancelot subsea Tee, where it is evacuated to the Perenco Bacton Gas Terminal processing facilities in Norfolk. Production from the 48/12d-9 well commenced in October 1998. The original mapped GIP at Annex B submission was 99 bcf, although by January 2021 the cumulative production was in excess of 160 bcf from the single well.
Perenco UK took over operatorship of the field in 2007 and the current interests in the Malory Field unit are Perenco 76% and Everard Energy 24%. In 2020 the gross production (sales) from Malory averaged between 6 to 7 mmscf/d. Since 2016 decline curve analysis has shown a clear hyperbolic trend with production at Malory anticipated to continue beyond 2030. The cause of the hyperbolic trend and associated pressure support is unproven but is likely to be due to either recharge from an adjacent Rotliegendes fault block or the Carboniferous beneath the reservoir.
Lancelot Unit – Everard 2% Perenco 98% (Op)
Licences P463 (48/17b) 25%
Status – Production Suspended
The Lancelot Field was discovered in 1986 by the Mobil operated well 48/17a-2. The field came on stream in July 1993 and gas and condensate from the 1 vertical and 3 horizontal development wells are evacuated via the Lancelot Area Production System (LAPS) pipeline. The gas and condensate are received at the LAPS owned onshore slug-catcher and compressor in Norfolk, from where it is delivered over the fence to the Perenco operated Bacton Gas Terminal.
Perenco UK took over operatorship of the field in 2007 and the current interests in the Lancelot Field unit are Perenco 98% and Everard Energy 2%. Cumulative production from the field as of January 2021 was ca. 200 bcf. Production from the field is currently shut in.
Everard Energy also owns 2% of the Lancelot Area Production System (LAPS) which continues to attract significant third-party business. Three new compression services agreements have been entered into in the last four years. In 2017 production from the Perenco operated INDE area fields arriving onshore was diverted into the available ullage in the LAPS compressor. In 2021 Perenco’s new offshore SHARP compression module will boost combined flows of the Perenco-operated INDE and Leman area fields through the LAPS compressor, providing a significant life extension for the LAPS shore facilities and the Bacton Gas Terminal. Independent Oil and Gas funded a FEED study and works in 2020 to enable future gas production from IOG’s Thames pipeline reception facility to pass through the LAPS compressor.
Perenco (Operator) 75%, Everard 25%
The decommissioning of the Perenco operated Guinevere Field (Everard Energy 25%) has largely been completed. The two platform production wells were plugged and abandoned without the use of drilling rig in early 2017. The export pipeline to the Lancelot platform was flushed clean and air-gapped at Lancelot to render the platform hydrocarbon free by December 2017, and the subsequent heavy lift activity to remove and recycle the topsides and jacket were completed during in early 2020. These works were completed on time, under budget and without incident. The remaining remedial pipeline decommissioning is planned to be completed in 2021.
Neptune (Operator) 81% , Everard 19%
The Juliet Field is operated by Neptune Energy and consisted of two subsea wells tied back to the Pickerill A platform. The field ceased production in 2018 and the subsea facilities were flushed clean to Pickerill A and disconnected, completing its hydrocarbon free status. All subsea facilities in the Juliet 500m zone were removed in 2019, and the remaining facilities in the vicinity of Pickerill A will be removed in 2022 The two production wells will be abandoned by Neptune as part of a multi-well campaign in 2023. The 48/17b-10 Juliet discovery well was plugged and abandoned in 2013.