Baker Hughes has signed a multi-year contract with Petrobras to extend deployment of its Blue Marlin and Blue Orca stimulation vessels, supporting offshore oil and gas production in Brazil’s post and pre-salt fields.The award, which followed an open tender, also covers the supply of associated chemicals and services.The vessels will deliver advanced chemical treatments to maximize production in brownfield and greenfield wells, and support well construction through gravel pack and frac pack operations.Baker Hughes said Blue Marlin and Blue Orca combine trained crews with onboard laboratories…