While CT declined to confirm figures, the group said there were 'significant overlaps' after the merger and 'a number' of staff reductions.
CT has handed its top global PR post to former Texaco comms chief Rosemary Moore, who becomes V-P of public and government affairs (P&GA), based in San Francisco.
The P&GA division has been realigned to face CT's business units, with PR heads and teams assigned to each.
Paul Bray, previously Texaco PA manager, remains in London as PA manager for the products business unit (Europe and west Africa).
Muriel Roberts, also formerly a Texaco PA manager, becomes PA manager for the European upstream business unit, covering exploration and production.
The business units are supported by an international relations team and central corporate comms function, led out of the US.
Texaco's former upstream PA manager (Eurasia and west Africa) Andy Norman becomes international relations adviser for EMEA and central Asia, based in London.
The merger has seen the departure of 20-year Texaco stalwart David Robinson, whose role as PA general manager no longer exists.