It's a game of hide and seek that could impact your drinking water, the air you breath, or even have explosive consequences.

Another ratio is even more suggestive of the Permian oil wells and the operating costs for drilling wells—produced water. The water-to-oil ratio in the Permian is much higher than in other basins.

The vast majority of U.S. oil wells produce very little oil. That might sound like a paradox, but it's just what happens when geology, economics and policy collide.

The Michigan Geological Repository for Research and Education at Western Michigan University archives analytical, pressure and production data from oil and gas wells. Most of this data was donated in ...

An estimated 880,000 abandoned oil and gas wells dot the United States. These orphaned wells, some of which were deserted as long as a century ago, can leak toxic oil and gas into the groundwater ...

Michigan started its orphan well program about three decades ago and has so far sealed about 400 old, leaky wells.

U.S. oil producers are grappling with geological limits to production growth as the country's top oilfield ages and produces more water and gas and less oil - and may be nearing peak output.

The Appalachian Basin – which includes parts of eastern Ohio – is one of the areas where aquifers are most at risk.

An SMU study is the first scientific proof of a phenomenon local landowners have long warned was occurring, abandoned oil wells spewing wastewater.

Abandoned oil wells pose a significant environment and health risk, as they can leak methane — a potent greenhouse gas — into the atmosphere and contaminate groundwater. The total estimated ...

Across Texas, abandoned wells are erupting with chemical-infused liquid and some have created massive lakes of contaminated water. Regulators say they need more money to address the problem.

States want to clean up leaky oil wells. Well-intentioned laws are getting in the way. Hard-to-meet federal requirements are slowing down the pace of remediation, state regulators say.