The option periods are for two years and they are based on established contracts. Exercising the options is part of the ongoing work to harmonize contracts in the relevant portfolio.

The contracts are very extensive and in addition to directional drilling, cover, for instance, mud logging, logging while drilling, measurement while drilling, jars, hole openers, drill bits and associated services.

Anders Opedal, senior vice president for procurement in StatoilHydro, said: We look forward to carrying on our good co-operation with the suppliers and hope that this will continue to take a positive direction.