QGOG Constellation is a market leading Brazilian-controlled provider of offshore oil and gas contract drilling and FPSO services in Brazil through its subsidiary Queiroz Galvao Oleo e Gas S.A. (QGOG). It also provides chartering of offshore and onshore drilling rigs. Since 1981 with continuous operations, QGOG has built an unmatched reputation for excellence in service for onshore and offshore drilling.