In a presentation given by PDVSA (held by Director Ignacio Layrisse) at the VII LAPEC conference in Buenos Aires, March 2001, the proven Venezuelan reserves were given as 76 billion barrels (1.21×1010 m3). Of this amount 52 billion barrels (8.3×109 m3) were heavy or extra heavy oil, including 37 billion reserves of extra heavy in the Orinoco Belt (1 in Machete, 15 in Zuata, 6 in Hamaca and 15 in Cerro Negro). This indicates that Venezuela’s reserves, according to PDVSA, in 2001 were 39 billion barrels (6.2×109 m3) excluding the Orinoco Belt.