3,692 wells across 336 recorded operators, with 15 drilling permits filed in the 24-month window at source refresh.
Daily refresh scheduled from IDNR well-header records. Stored source refresh: 2026-09-16.
Formation summary: Stored source refresh: 2026-09-16. This formation/play summary uses recorded well and operator counts and permit dates in the preceding 24 months at summary refresh. Operator counts do not verify current operations. Summary counts and the separately refreshed permit and DUC lists may have different coverage. This is a capped directory of stored records, not a complete statewide count. Permit list: Stored source refresh: 2026-09-17. At most 50 displayed permit records match the formation name, ordered by permit date. This operator-linked list can differ from the summary permit count; a permit is not proof of drilling or production. This is a capped directory of stored records, not a complete statewide count. DUC list: No stored records are available in this view; this does not establish zero activity. At most 30 displayed records match the formation name, ordered by spud date. A spud date with no reported first production is a DUC proxy, not verified completion status. Elapsed days are computed at source refresh. This is a capped directory of stored records, not a complete statewide count.
Stored source refresh: 2026-09-16. This formation/play summary uses recorded well and operator counts and permit dates in the preceding 24 months at summary refresh. Operator counts do not verify current operations. Summary counts and the separately refreshed permit and DUC lists may have different coverage. This is a capped directory of stored records, not a complete statewide count.
Compiled from Illinois Department of Natural Resources records through a commercial well-data aggregator. Scheduled refreshes do not guarantee that new regulator filings are available. Use the source records to check a specific well.
Stored source refresh: 2026-09-17. At most 50 displayed permit records match the formation name, ordered by permit date. This operator-linked list can differ from the summary permit count; a permit is not proof of drilling or production. This is a capped directory of stored records, not a complete statewide count.
Compiled from Illinois Department of Natural Resources records through a commercial well-data aggregator. Scheduled refreshes do not guarantee that new regulator filings are available. Use the source records to check a specific well.
No stored records are available in this view; this does not establish zero activity. At most 30 displayed records match the formation name, ordered by spud date. A spud date with no reported first production is a DUC proxy, not verified completion status. Elapsed days are computed at source refresh. This is a capped directory of stored records, not a complete statewide count.
Compiled from Illinois Department of Natural Resources records through a commercial well-data aggregator. Scheduled refreshes do not guarantee that new regulator filings are available. Use the source records to check a specific well.
Quick answer: The Wisconsin Arch formation in Illinois has 3,692 wells on record across 336 recorded operators, with 15 drilling permits filed in the 24-month window at source refresh. Its operators with the most wells on record are Il State Geological Survey, Natural Gas Pipeline Co. Of America, Vickery Drilling, Northern Illinois Gas Company and Natural Gas Storage Company Of Il. Compiled from Illinois Department of Natural Resources (IDNR) well-header records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
The operators with the most well counts targeting the Wisconsin Arch formation in Illinois:
| # | Operator | Wells in Wisconsin Arch |
|---|---|---|
| 1 | Il State Geological Survey | 421 |
| 2 | Natural Gas Pipeline CO Of America | 411 |
| 3 | Vickery Drilling | 404 |
| 4 | Northern Illinois Gas Company | 314 |
| 5 | Natural Gas Storage Company Of Il | 176 |
| 6 | Wang Engineering | 145 |
| 7 | Central Il Electric | 135 |
| 8 | Alco Oil & Gas | 112 |
| 9 | Bays Carl A Etal | 87 |
| 10 | Peoples Gas & Companyke Company | 81 |
The Illinois counties with the most Wisconsin Arch activity:
Will, Mc Henry, Kane, Winnebago, Du Page
The most recent 15 drilling permits filed for Wisconsin Arch wells in Illinois:
| Permit Date | Well | API | County | Operator | Lateral (ft) |
|---|---|---|---|---|---|
| 2026-03-31 | Kilpatrick 5 | 120910015803 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2026-03-04 | Mathesius, P. 19 | 120992928800 |
La Salle | Northern Illinois Gas Company | — |
| 2025-05-27 | Mathesius, P. 18 | 120992928500 |
La Salle | Northern Illinois Gas Company | — |
| 2025-05-27 | Weldon 21 | 120992928400 |
La Salle | Northern Illinois Gas Company | — |
| 2025-01-21 | Kruse 4 | 120910008502 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2025-01-16 | Bartlett 4 | 120910043001 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2025-01-03 | Kirchner 11-D Dir | 120912741801 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2025-01-03 | Kirchner 10-D Dir | 120912741701 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-12-16 | Storage 2 | 120910028101 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-12-16 | Piper 2 | 120910009101 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-12-16 | Schwark 7 | 120910008002 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-12-16 | Schwark 11 | 120912636201 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-12-16 | Kirchner 5 | 120912635901 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-12-13 | Armstrong 2 | 120910009901 |
Kankakee | Natural Gas Pipeline CO Of America | — |
| 2024-11-04 | Schwark M-6 | 120910054201 |
Kankakee | Natural Gas Pipeline CO Of America | — |
The Wisconsin Arch is a formation/play group recorded in Illinois, with 3,692 wells on file across 336 distinct operators of record. Operators have filed 15 drilling permits targeting the Wisconsin Arch in the 24-month window at summary refresh. These are stored records, not a live measure of drilling.
Recorded formation activity provides regional context. It does not establish ownership, future production, royalty payments or a value for an individual tract. Consult qualified professionals about your specific interest.
Browse listed Illinois oil & gas formations & plays · Download the Illinois formations dataset (CSV)
3,692 wells target the Wisconsin Arch in Illinois, worked by 336 recorded operators, per IDNR well-header records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
By well count, the operators with the most Wisconsin Arch wells on record in Illinois are Il State Geological Survey, Natural Gas Pipeline Co. Of America, Vickery Drilling, Northern Illinois Gas Company and Natural Gas Storage Company Of Il. The full ranking is in the table on this page. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
Operators filed 15 drilling permits targeting the Wisconsin Arch in the 24-month window at source refresh, per IDNR records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
Operators filed 15 new drilling permits targeting the Wisconsin Arch in Illinois in the 24-month window at source refresh. New permits and spuds record reported activity stages; they do not establish ongoing drilling, per IDNR records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
Wisconsin Arch activity in Illinois includes 3,692 wells on record and 336 recorded operators, led by Il State Geological Survey, Natural Gas Pipeline Co. Of America, Vickery Drilling, Northern Illinois Gas Company and Natural Gas Storage Company Of Il, with 15 drilling permits filed in the 24-month window at source refresh — from Illinois Department of Natural Resources (IDNR) well-header records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
The primary counties recorded for Wisconsin Arch in Illinois are Will, Mc Henry, Kane, Winnebago, Du Page. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. This page is informational only, not a valuation. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.
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Formation: Wisconsin Arch
State: Illinois
Total wells: 3,692
Recorded operators: 336
Permits 24mo: 15
Last refresh: 2026-09-16
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