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Cost to plug an oil well in Illinois

The tested median cost to plug a well in Illinois is $36,649, with a typical range of $8,148 to $49,088. That figure covers wells of all types: 551 of the 783 wells on file are oil wells.

What the figure means for an oil well in Illinois

The free figure is the statewide cost across all well types, tested on wells left out of the calculation. A figure for oil wells alone in Illinois passes testing and is part of Pro, along with 2 county-level figures. Individual wells vary widely: the records are mostly old, shallow orphan wells, so a deep or complex well can cost more.

The state's plugging cost index (first year = 100) read 2022: 113, 2023: 100.

Next steps

• Estimate a specific well in Illinois
• Check whether a bond covers your wells
• All of the Illinois figures
• Plugging Cost Index
• Cost to plug an injection or disposal well in Illinois

Data through June 2026. Wells are the reported costs behind each figure. Every figure is tested on wells left out of the calculation. AHigh confidence means a large sample and a figure typically within 25% of those wells; BModerate confidence means a smaller sample or within 40%. Anything weaker is shown as Insufficient data. How figures are tested.