Abu Dhabi: Exxon Mobil Corp has pulled its staff from Abu Dhabi’s onshore oil fields after its concession agreement with state-run Abu Dhabi National Oil Company, or Adnoc, expired earlier this month, Energy Intelligence reports Friday.

Exxon’s actions break with fellow majors BP PLC, Royal Dutch Shell PLC and Total SA, which have kept their crews in place since the 75-year onshore concession expired on January 11, Energy Intelligence said.

The local offices of Exxon and Adnoc were unavailable for comment.

Abu Dhabi is in the process of selecting a new foreign partnership to operate the onshore fields.

All the foreign partners in the concession, excluding Partex, were invited to bid for a new agreement, according to Adnoc and company executives.

Abu Dhabi has also given approval to US-based Occidental Petroleum Corp, China National Petroleum Corp, Inpex Corp of Japan, Korea National Oil Corp, Norwegian oil company Statoil ASA, Italy’s Eni and Russia’s OAO Rosneft to bid.