Alleged contractual shortfalls on the part of PDVSA regarding Jamaica's state refiner come amid heightened tensions between Venezuela and Guyana.
The Brazilian NOC had announced last October that it intended to mothball the units.
The Brazilian fuel distributor owns 49% of CDGN Logística.
The fertilizer and lithium producer SQM presented a plan for US$25mn after it was charged for a series of infractions at the Salar de Atacama.
Bolivian urea is 20% cheaper than that imported from Peru.
$724 million purchase price plus $77 million of refundable VAT
The project will be carried out Logum Logística, a joint venture between Brazilian NOC Petrobras, Raízen Energia, Copersucar and Uniduto.
If the project is developed, Puerto Busch is expected to be used to ship increasing quantities of urea.