ExplorationPTTEP, Petronas aiming for Sarawak gas doublePartners to drill Nangka wildcat on same block as Dokong sweet gas discoveryRig of choice: Borr Drilling's jack-up Saga on the PTTEP-operated Lang Lebah 2 appraisal well offshore MalaysiaPhoto: PTTEPAmanda BattersbyLondon