This document lists oil and gas fields and blocks in Vietnam along with the participating companies and dates of production sharing contracts or joint operating agreements. Some key fields and blocks mentioned include Rang Dong (ConocoPhillips, PVEP), Ruby (Petronas, PVEP), Bach Ho (ConocoPhillips, PVEP), Lan Tay - Lan Do (ConocoPhillips, PVEP), Cuu Long (Petronas, Zarubezhneft, PetroVietnam), and Hoang Long (Soco International, Hess, PVEP). The document also shows a map of Vietnam with oil and gas blocks labeled.