Illinois drilling activity records with verified source dates and coverage limits. Missing categories stay unknown. Counts are not statewide totals.
Source: Buckhead Energy analysis of public oil and gas data · Refresh dates: 2026-11-01This Illinois report includes 131 permit records, — spudded wells without recorded first production, 0 spud records, and 0 producing-well records. The county activity summary includes 102 counties. Counts describe the included records, not statewide totals; source refresh dates are listed below.
| # | Operator | Wells |
|---|---|---|
| 1 | The Ohio Oil | 10,782 |
| 2 | Marathon Oil Company | 4,529 |
| 3 | The Texas Company | 4,094 |
| 4 | Pure Oil Company | 3,231 |
| 5 | Texaco | 2,427 |
Counts describe the records included in each category. Coverage is limited and some categories are capped; these counts are not statewide totals. Permit, spud and first-production counts are 12-month totals of monthly Buckhead Energy aggregates, recomputed daily; months resting on 1-2 wells are withheld, so totals are floors. The DUC category uses spud date without recorded first production as a proxy; it does not independently verify completion status. County summaries and operator rankings cover their included records.
Operator rankings:
Permit records:
DUC records:
Spud records:
Producing-well records:
County activity:
An unavailable source date does not establish a zero count. Source refresh dates describe the included records, not the time this page was opened. Use the state regulator reference to research filings; it does not certify these compiled counts.
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Wondering whether to sell now? See Is now a good time to sell mineral rights in Illinois? — it ties this drilling data to the factors that decide timing, then routes to a free written offer.
Source: Buckhead Energy analysis of public oil and gas data. Refresh dates: 2026-11-01.
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