Orphan oil wells—abandoned, undocumented, and often leaking methane—pose a widespread environmental and climate threat across the U.S., and finding them is just the beginning of a costly and urgent cleanup effort.

Across the United States, hundreds of thousands of orphaned oil and gas wells — abandoned and often undocumented — pose a growing threat to public health, the environment, and the climate. These wells, many of them decades or even a century old, were never properly plugged and are now leaking methane and other pollutants into the air, soil, and water. As reported by Camila Domonoske, these relics of the fossil fuel industry are hidden in forests, farmland, neighborhoods, and even riverbeds, where their presence is often unknown and their damage unchecked.
The first step in addressing this issue is finding the wells, a task made difficult by sparse records and outdated maps. Experts like Dan Arthur, a petroleum engineer, use everything from gas-detection cameras to drones and historical research to hunt down these forgotten sites — often likening the process to fossil hunting. While the federal government has allocated $4.7 billion through the Bipartisan Infrastructure Law to help states locate and plug these wells, the sheer scale and cost of the problem remain daunting. Many wells are still being orphaned today due to loopholes, weak regulations, and companies going bankrupt or transferring liability.
Beyond methane, orphan wells can release toxic substances and contaminate ecosystems long after they’ve stopped producing oil or gas. Experts argue that without stronger policies, such as requiring higher surety bonds, limiting non-productive wells, and holding companies accountable, the problem will only grow. While some states are making progress, the current pace and funding fall far short of what's needed. As Domonoske reports, advocates and tribal leaders like Everett Waller stress that the stakes are too high to ignore, calling for sustained efforts to map, monitor, and finally sunset this harmful chapter of America’s energy past.
FULL STORY: Defunct oil wells are a national problem. Finding them is the first step

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