Freshfields Bruckhaus Deringer and Herbert Smith Freehills have advised as Thailand oil and gas giant PTT Exploration and Production (PTTEP) has bought Hess’ Thailand assets for $1bn.

The company, which is the exploration and production affiliate of Thailand’s state-owned energy company PTT, said in a statement today it would acquire 100% equity stakes of Hess subsidiaries, which own minority stakes in two Thai oil and gas blocks.