Diplomats from Venezuela and Guyana will hold talks on a move by Guyana to claim a larger area of continental shelf in the Caribbean Sea.
Venezuelan President Hugo Chavez says Foreign Minister Nicolas Maduro will travel to Trinidad on Friday for talks with Guyana's top diplomat, Carolyn Rodrigues-Birkett.
Venezuela expressed concerns after Guyana filed a claim with the United Nations for a larger share of the continental shelf to take in offshore areas thought to hold oil and natural gas deposits.
Venezuela is concerned that could infringe on a disputed zone in Venezuela's long-standing claim to Guyana's Essequibo region.
Chavez said Thursday that a U.N. appointed mediator will attend the talks in Trinidad.