Roberto Luis Monti

Transocean, Inc. provides offshore contract drilling services for oil and gas wells. The company also provides integrated services. It operates through two segments, Transocean Drilling and TODCO. The Transocean Drilling segment consists of floaters, jackups and other rigs used in support of offshore drilling activities and offshore support services. The TODCO segment consisted of its interest in TODCO, which conducts jackup, drilling barge, land rig, submersible and other operations in the United States. Transocean, Inc. is based in Houston, Texas.

Trefoil Ltd. operates as a holding company with interest in acquiring, exploring and developing and gas properties. The company was founded in November 13, 1997 and is headquartered in Buenos Aires, Argentina.

Petrobras Argentina SA engages in the development and exploration of oil and gas properties. It operates through the following business segments: Generation, Distribution of Energy, Oil and Gas, Refining and Distribution, Petrochemicals, and Holding and Other Business. The Generation segment engages in generation through the following businesses: Central Térmica Genelba, Central Térmica Loma la Lata, Central Térmica Ingeniero White, Central Térmica Güemes, Central Térmica Piquirenda, Central Térmica Parque Pilar, EcoEnergía, Hidroeléctrica Nihuiles and Hidroeléctrica Diamante, HPPL, Corti, Pampa Energia WPP and De la Bahi WPP, and Enecor. The Distribution of Energy segment engages in the electricity distribution through its subsidiary Edenor. The Oil and Gas segment engages in oil and gas business directly through its investments in Oleoductos del Valle S.A. The Refining and Distribution segment engages in the refining and distribution business through its storage facility in Dock-Sud and Refinor. The Petrochemicals segment operates through its styrenics operations and the catalytic reformer operations conducted in its Argentine plants. The Holding and Other Business segment holds interest in Petrobras Hispano Argentina S.A and Transener. The company was founded in 1946 and is headquartered in Buenos Aires, Argentina.