What drives the cost of plugging a well
Depth, location, well condition, contract size and timing: what moves a plugging bill and how much of it the public records can show.
Plugging a well means filling it with cement so that oil, gas and water cannot move between layers or reach the surface. Several things decide what that costs.
Depth and construction
Deeper wells need more cement and more time, and long or complex casing strings can need cutting, milling or pulling. Cost per foot falls as wells get deeper because setup and mobilisation do not depend on depth: see cost per foot.
Condition
An orphan well that has leaked, lost its casing integrity or been vandalised can need extra work before it can be plugged. The public records rarely say which wells were hard.
Location
Access roads, water, local labour and rig availability differ widely. Among the 10 states with a published figure, medians run from $5,590 to $132,792. Compare states.
How the work is bought
Many programs bundle wells into one contract, so the record is a contract average. Bundling lowers cost per well through shared mobilisation, but it also hides which wells were cheap or costly. See how to read plugging cost data.
Timing
Rig and cement prices move. The Plugging Cost Index tracks like-for-like change, latest value 102.2 for 2026Q2 (2023 = 100).
Restoration
Some programs include surface restoration in the reported cost and some do not, and the source does not always say.