BP concludes latest Valhall LOFS survey
WGP has completed the 12th Life of Field Seismic (LoFS) survey on BP’s Valhall development in the Norwegian North Sea.
BUDE, UK -- WGP has completed the 12th Life of Field Seismic (LoFS) survey on BP’s Valhall development in the Norwegian North Sea. The operating vessel M/V Stril Myster has since been demobilized and resumed supply vessel duties for BP.
In 2003 BP installed its LoFS ocean bottom cable (OBC) array and contracted WGP to design the source system. Eleven repeat surveys later, it contracted WGP again to install and operate the same portable source system, now owned and supplied by Thalassa Energy Services.
The Valhall LoFS shooting area comprises 179 shot lines spaced 50 m (164 ft) apart with an average shot-line length of 14.2 km (8.8 mi), over 13 permanently installed and trenched receiver lines of GERI OBC. The total of shots during this latest survey was 51,697, an average of 3,730 shots per day.
Marcus Smith, WGP’s operations manager, said: “Despite the complications arising from both the weather and time-sharing on a busy prospect in the North Sea during the summer seismic window, WGP’s experienced approach to such operations and familiarity with this technology enabled the company to meet and surpass BP’s exacting requirements on time and in budget.”
WGP claims to have achieved zero lost-time incidents and an average 186 km (115 mi) shot per day during operational periods.”
BP is due to start its next Valhall LoFS phase in 2011.