The Valhall complex consists of six separate steel platforms for living quarters, drilling, production, water injection, and a combined process- and hotel platform. About 6 km north and south of the field center, two unmanned flank platforms (North and South) are located, remotely operated from Valhall. The Hod field is developed with an unmanned wellhead platform, located 13 km south of Valhall and remotely operated from the Valhall field center. All wells on the Hod platform are currently shut-in and awaiting for plug and abandonment. The Hod reservoir is now produced from wells drilled from the Valhall Flank South platform.
Operating efficiency in 2016 was 77%, which is good considering the comprehensive maintenance turnaround (TAR) completed during the summer. Net production from Valhall and Hod combined averaged to 15.8 mboepd in 2016. In 2016 Valhall delivered a strong HSE performance with zero days away from work cases or any high potential incidents. This reflects a good safety culture with relentless focus on safe and reliable operations.
In 2014 the Maersk Reacher jack up rig started plug and abandonment of wells at Valhall. In total, 13 of 31 wells have been plugged, in less time and at a lower cost than the original budget.
The original living quarter platform at Valhall was cold stacked in 2016. The topsides of the 2/4-G riser platform located at the Ekofisk complex, which is part of the Valhall field development was safely removed in July and taken to AF Miljøbase in Vats for recycling.
The maturity and complexity of the field is illustrated through nearly 150 productive wells being drilled since field discovery, of which 55 are currently active. Early January 2017, Valhall and Hod passed one billion barrels of oil equivalents produced, which is more than three times the volume expected at the opening of the field in 1982. During 2016, lifetime extension for Valhall well head platform (WP) was granted by the Petroleum Safety Authority (PSA) till 2028.
Despite a production of 1 billion barrels of oil equivalents and 35 years of production in 2017, we believe a further 500 million barrels of oil equivalents can be produced. We also believe there can be further potential upside due to new technological solutions, new wells and improved efficiency.
Work will continue to reduce costs and improve the production efficiency. A key focus is to maximize recovery by water injection and maintaining a stable high operating efficiency. Aker BP’s goal is safe and profitable production from Valhall for several decades to come.
The activity level at Valhall will increase during 2017. The drilling program will recommence on the Valhall injection & drilling platform in the first quarter, after a drilling break at the field. In addition, the remaining plug and abandonment campaign at the drilling platform with the newly built Maersk Invincible rig will commence in second quarter of 2017.
Aker BP will continue to progress the Valhall West Flank project towards a planned submission of plan for development and operations (PDO) in 2017. New seismic over Hod area will be completed in 2017 to support a drill or drop decision for Hod appraisal well.