Harold Hamm, the billionaire wildcatter who helped kick off the US shale oil revolution, is once again making history. This ...

Venezuela has the largest share of oil reserves in the world but hasn't been producing or refining it. See the charts.

America’s most productive oil patch is now grappling with a problem it cannot drill its way out of: mounting underground pressure from billions of barrels of dirty water. What began as a quiet ...

Fully restoring Venezuelan production will take years, but some can be restored through maintenance, which would be low-cost ...

LONDON (Reuters) - The decline in output from mature global oil and gas fields is accelerating amid greater reliance on shale and deep offshore resources, the International Energy Agency said on ...

Secretary of State Marco Rubio said he believes Western oil companies are prepared to make the billions of dollars of ...

ExxonMobil’s return to Iraq marks a major geopolitical shift, signaling renewed Western engagement. The U.S. oil giant’s comeback will center on developing the supergiant Majnoon oil field. Stronger U ...

A former Chevron executive is seeking $2 billion in investment for oil opportunities in Venezuela as the U.S. shows interest in rebuilding the country's petroleum industry following the capture of its ...

Abandoned oil and gas wells pose environmental and public health risks. For three decades, the state has mismanaged funds earmarked for minimizing the threat.