Norway's Shearwater GeoServices has clinched survey contracts from Aker BP and Equinor for the summer season.

The company said the four ocean-bottom seismic (OBS) surveys will involve the 3,800-dwt WG Tasman and WG Cook (both built 2010), owned by WesternGeco.

“We are excited to be chosen by two major petroleum exploration and production companies to execute these surveys and leverage our proprietary OBS acquisition system, state-of-the-art vessels and experienced crews,” said Irene Waage Basili, Shearwater chief executive.

Aker BP's deal is a multi-year one, with the first three surveys to be conducted at the Frosk, Ivar Aasen and Valhall fields, starting in the second quarter.

These jobs will last about four months.

Equinor has awarded Shearwater a one-month survey of the Gullfaks field in Norway, with start-up in the third quarter.

“These awards secure backlog for the full North Sea summer season for two of our OBS vessel platforms cementing our strong position in the OBS market," Waage Basili added.