Fernando Zúñiga-Rivero, Hugh Hay-Roe, Tom s Vargas
BPZ & Associates Inc.
Along the extensive continental margin of Peru1 (Fig. 1 [127,766 bytes]) (Fig. 2 [103,263 bytes]) are at least 10 sedimentary basins-some partly onshore,2 some entirely on the continental shelf,3 others on the continental slope4-and only two have really been tested for oil and gas. They are the Talara basin, which has already accumulated close to 300 million bbl from its offshore sector, and the Tumbes sub-basin, with several shut-in gas fields discovered offshore.
Only one other basin has seen the drilling of offshore tests (two wells, one very shallow, 27 ye...