We are effectively providing legal services to the oil and gas industry since 1990. Provision of these services is our main practice since 1998. We have been active players in three complete legislation and legal environment changes in this sector in Bolivia.

Members of our Law Firm assessed on the capitalization and privatization processes of business units of Yacimientos Petrolíferos Fiscales Bolivianos (YPFB), the State-owned oil and gas company in Bolivia.

Our client list in this sector includes Yacimientos Petrolíferos Fiscales Bolivianos (YPFB), Petrobras S.A. (Brasil), Petrobras Bolivia S.A., Total Exploration & Production Bolivie, Repsol YPF, Empresa Petrolera Andina S.A., British Gas Bolivia, Panamerican Energy, Empresa Petrolera Chaco S.A., Transierra S.A., Occidental Petroleum, BJ Services – BJ Boliviana S.A., Grupo Apolo – Bolser. This client list includes the most important exploration and production companies, one of the main gas transportation for export companies and some of the main service providers of the industry in Bolivia.

We have detailed knowledge of the exports gas system to Brazil, the main oil and gas business of Bolivia. We provided a significant amount of services for over a six-year period in relation with gas sales negotiations and gas transport negotiations by the Bolivia-Brazil pipeline, on behalf of our clients YPFB and gas producers located in Bolivia.

The regulatory agencies for oil and gas in Bolivia (Superintendencia de Hidrocarburos and Superintendencia General del SIRESE) hire our services on a case-by-case basis in regard to complex regulatory hydrocarbons and energy matters, including gas prices, gas pipeline transportation, electricity generation and oil and gas commercialization.

In many occasions we provided services to the Bolivian Administration drafting regulations on this industry.

Our services include selection, structuring, negotiation, documentation, creation and administration of business entities for oil and gas and energy ventures, including joint ventures, partnerships, and other joint-ownership or joint-participation arrangements.

Recently, we performed a detailed assessment of the effects of the Hydrocarbons Law No. 3058 and the nationalization process conducted by the Bolivian Administration, including constitutional matters and international arbitration under bilateral investments treaties ratified by the Republic of Bolivia.

We constantly prepare legal opinions for our clients in diverse matters such as exploration and production contracts, taxes, joint operational agreements, regulations risks and effects and others.

Without prejudice of this intense activity, we are very careful to avoid any conflict of interest. To this effect, we perform a very careful case selection process.

Significant transactions:

• We assessed the Bolivian Administration on the capitalization process of Empresa Petrolera Andina SAM, Empresa Petrolera Chaco SAM and Transportadora de Hidrocarburos Transredes SAM, incorporated from YPFB´s business units.

• We advised the Bolivian Administration on the privatization process of YPFB´s business units for transportation, storage, LPG bottling, LPG distribution, nets gas distribution and airport service stations.

• Advised the Bolivian Administration and an investment bank on private participation processes for nets gas distribution and natural gas for cars.

• Over a six year period (1998-2004), we acted as counsel to the Contracts Negotiation Vice Presidency (VPNC) of Yacimientos Petrolíferos Fiscales Bolivianos (YPFB) in matters related to the gas exports to Brazil, a project including exports for over a 20 year period of 30.08 million cubic meters of gas per day. We acted directly in the negotiation and drafting of the TCQ, TCO and TCX Gas Transportation Agreements for the Bolivia-Brazil Pipeline and accomplishment and negotiations related to the Gas Sales Agreement (GSA) entered by YPFB and Petrobras.

• In 2006 and 2007 we advised the main exploration and production companies in Bolivia regarding the "hydrocarbons nationalization process" conducted by the Bolivian Administration, including renegotiation of joint risk agreements and execution of new operation agreements. Our services included litigation assessment of administrative, constitutional and international arbitration matters under bilateral investments treaties ratified by the Republic of Bolivia.