On 4 Dec 2013, OGX Petroleo e Gas SA , Brazil's second-largest oil company by market value, began production in the Tubarão Martelo field, located in the BM-C-39 and BM-C-40 blocks, through the horizontal well TBMT-8H.
On 29 Nov 2013, OGX received an operating license from the Brazilian Institute for Environment and Renewable Natural Resources, IBAMA, to operate the FPSO OSX-3 and the respective subsea structures related to the oil production development and outflow for the BM-C-39 and BM-C-40 blocks, located in the Campos basin.
OGX has produced a video of the production model in the Tubarão Martelo field, available here (5:43, in Portuguese).