People work at Chevron's drilling site during a media day in Pungesti
People work at Chevron's drilling site during a media day in Pungesti April 8, 2014. The U.S. Energy Information Administration estimates that Romania and its neighbors Bulgaria and Hungary could between them have 538 billion cubic meters of gas, which would be enough to cover Romania's consumption for almost 40 years. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT)
Chevron's country manager Holst addresses to journalists during a media day at Chevron drilling site in Pungesti
Chevron's country manager Thomas Holst addresses to journalists during a media day at Chevron drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT)
Chevron's country manager Holst addresses to journalists during a media day at Chevron drilling site in Pungesti
Chevron's country manager Thomas Holst addresses to journalists during a media day at Chevron drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT)
People from local communities hold a banner on a hill as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti
People from local communities hold a banner on a hill as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT CIVIL UNREST)
Drilling site manager Murphy looks on as people from local communities protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti
Drilling site manager Greg Murphy looks on as people from local communities protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT CIVIL UNREST)
Drilling site manager Murphy addresses to media as people from local comunities protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti
Drilling site manager Greg Murphy addresses to media as people from local comunities protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT CIVIL UNREST)
People from local comunities shout slogans as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti
People from local comunities shout slogans as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT CIVIL UNREST)
People from local comunities hold a banner on a hill as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti
People from local comunities hold a banner on a hill as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT CIVIL UNREST)
People from local comunities shout slogans as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti
People from local comunities shout slogans as they protest against shale gas exploration during a media day at Chevron's drilling site in Pungesti April 8, 2014. REUTERS/Bogdan Cristel (ROMANIA - Tags: BUSINESS ENERGY ENVIRONMENT CIVIL UNREST)