EnQuest Producer Demob
1.1 Combined Decommissioning Programmes
This document contains four Decommissioning Programmes, one for each set of notices under Section 29 of the Petroleum Act 1998. The Decommissioning Programmes are:
The EnQuest Producer floating production storage and offloading vessel (FPSO) complete with all subsea equipment, including manifolds and wellhead protection structures;
All pipelines associated with the Alma field including PL3006, PL3007, PL3008, PLU3009, PL3011, PL3012, and PL3013 and associated jumpers;
The Galia installation, a wellhead protection structure; and,
All associated pipelines including PL3014, PLU3015, and PL3016.
Installations: In accordance with the Petroleum Act 1998, EnQuest Heather Limited, as operator of the Alma and Galia fields, and on behalf of the Section 29 notice holders, is applying to the Offshore Petroleum Regulator for Environment and Decommissioning (OPRED) to obtain approval for decommissioning the installations detailed in Section 2 of this document. Partner Letters of Support will be provided directly to OPRED.
Pipelines: In accordance with the Petroleum Act 1998, EnQuest Heather Limited, as operator of theAlma and Galia pipelines, and on behalf of the Section 29 notice holders, is applying to OPRED to obtain approval for decommissioning the pipelines detailed in Section 2 of this document. Partner Letters of Support will be provided directly to OPRED.
In conjunction with public, stakeholder and regulatory consultation, the Decommissioning Programmes are submitted in compliance with national and international regulations and OPRED guidance notes. The schedule outlined in this document is for a seven-year period with FPSO sailaway due to begin sometime Q3 2020.
The Alma and Galia oil fields are situated in blocks 30/25c and 30/24b respectively of the United Kingdom Continental Shelf and operated by EnQuest Heather Limited. These fields are located approximately 282km north-east of Northumberland coast (Seahouses), in water depths of ~77m.
The Alma and Galia fields were developed as a single joint development and came onstream in late 2015. They produce via subsea wells tied-back to the FPSO vessel via one central hub for all fields.
Alma has six production wells and one water injector, while Galia produces via one well. The Cessation of Production documentation for the Alma & Galia fields is currently under consideration by the Oil and Gas Authority.
The Decommissioning Programmes explain the principles of the removal activities and are supported by an environmental appraisal report. The Decommissioning Programmes for the pipelines are also supported by a comparative assessment.