Cl Mcmahon
Operator of record for 76 catalogued wells across 1 state. Every well below links to its full registry page.
Wells operated
76
Active
5
Plugged
56
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 76 |
Well mix
- Oil wells
- 36
- Gas wells
- 1
- Shut-in
- 0
- Active share
- 7%
Is this your company?
Claim Cl Mcmahon to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileNotable wells operated by Cl Mcmahon
| Well | API # | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Smith, Emma 25 | 12-023-02528 | Plugged & abandoned | Oil | Clark, IL | C. L. McMahon, Inc. | 564 ft |
| Howard, Wm. L-7 | 12-023-02633 | Plugged & abandoned | Oil | Clark, IL | C. L. McMahon, Inc. | 557 ft |
| Cole & Daley O-1 | 12-023-00684 | Plugged & abandoned | Oil | Clark, IL | C. L. McMahon, Inc. | 555 ft |
| Huffman, George W. 1 | 12-023-02628 | Other status | Other type | Clark, IL | C. L. McMahon, Inc. | 550 ft |
| Smith, Emma 29 | 12-023-02532 | Plugged & abandoned | Oil | Clark, IL | C. L. McMahon, Inc. | 546 ft |
| Phillips, C. H-13 | 12-023-02465 | Active | Injection | Clark, IL | C. L. McMahon, Inc. | 542 ft |
| Cole & Daley M-7 | 12-023-01399 | Plugged & abandoned | Injection | Clark, IL | C. L. McMahon, Inc. | 542 ft |
| Smith, Emma 1-8 | 12-023-02535 | Plugged & abandoned | Injection | Clark, IL | C. L. McMahon, Inc. | 542 ft |
| English, L.C. 12 | 12-023-00688 | Plugged & abandoned | Other type | Clark, IL | C. L. McMahon, Inc. | 541 ft |
| Lamb, Ovetha P-7 | 12-023-02621 | Plugged & abandoned | Oil | Clark, IL | C. L. McMahon, Inc. | 541 ft |
| Cole & Daley L-7A | 12-023-02444 | Plugged & abandoned | Injection | Clark, IL | C. L. McMahon, Inc. | 535 ft |
| Smith, Emma 1-10A | 12-023-02536 | Plugged & abandoned | Oil | Clark, IL | C. L. McMahon, Inc. | 535 ft |
Deepest first where depth is published; find any well via search.
Frequently asked questions
How many wells does Cl Mcmahon operate?
Cl Mcmahon is the operator of record for 76 catalogued oil & gas wells, with the largest concentration in Illinois (76). Only wells in states WellCensus has ingested are counted.
How many of Cl Mcmahon's wells are still active?
5 of Cl Mcmahon's catalogued wells are active; 56 are plugged & abandoned and 1 are flagged as orphaned.
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).