Mazzarino M
Operator of record for 132 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mazzarino M is the operator of record for 132 catalogued U.S. oil & gas wells in 1 state. 13 (10%) are active, 113 (86%) plugged & abandoned. Its largest concentration is in Illinois, with 132 wells (100% of its portfolio).
Wells operated
132
Active
13
Plugged
113
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 132 |
Well mix
- Oil wells
- 46
- Gas wells
- 1
- Shut-in
- 1
- Active share
- 10%
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Claim your operator profileWhere does Mazzarino M operate?
Mazzarino M's catalogued wells are spread across 1 state: Illinois (132). Its 132 Illinois wells are 0.1% of the 174,478 catalogued in that state — its largest share of any state. Counts cover only states whose registries WellCensus has ingested with operator names; wells in Nebraska and Texas (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Mazzarino M’s wells are active, plugged or orphaned?
10% of Mazzarino M's catalogued wells are active, 19 percentage points below the national share of 29%. 86% are plugged & abandoned, against 47% nationally. 1 wells (0.8%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Mazzarino M operate?
By product class, 46 (35%) are oil wells and 1 (0.8%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Simcox 1 in Marion, IL at 4,160 ft. The wells listed below sit in Marion (IL), Clinton (IL), Madison (IL), Macoupin (IL) and Jefferson (IL).
Notable wells operated by Mazzarino M
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Simcox 1 | 12-121-01620 | Plugged & abandoned | Other type | Marion, IL | Mazzarino, M. | 4,160 ft |
| Reuter 1 | 12-027-25166 | Plugged & abandoned | Oil | Clinton, IL | Mazzarino, M. | 4,056 ft |
| Gullick, Lewis 1 | 12-027-02594 | Shut-in | Other type | Clinton, IL | Mazzarino, M. | 4,051 ft |
| Hanke 2-C | 12-027-25110 | Active | Oil | Clinton, IL | Mazzarino, M. | 4,040 ft |
| Merten 2 | 12-027-25446 | Other status | Oil | Clinton, IL | Mazzarino, M. | 4,040 ft |
| Hanke 1-C | 12-027-25084 | Plugged & abandoned | Oil | Clinton, IL | Mazzarino, M. | 4,030 ft |
| Merten 1 | 12-027-25284 | Plugged & abandoned | Oil | Clinton, IL | Mazzarino, M. | 4,012 ft |
| Johnpeter 1 | 12-027-02528 | Plugged & abandoned | Other type | Clinton, IL | Mazzarino, M. | 2,730 ft |
| DuComb 1 | 12-027-01643 | Plugged & abandoned | Other type | Clinton, IL | Mazzarino, M. | 2,635 ft |
| Pratt 1 | 12-119-01136 | Plugged & abandoned | Other type | Madison, IL | Mazzarino, M. | 2,465 ft |
| Kilton, W. D. 1 | 12-117-00626 | Plugged & abandoned | Other type | Macoupin, IL | Mazzarino, M. | 2,315 ft |
| Wacker 1 | 12-081-00986 | Plugged & abandoned | Other type | Jefferson, IL | Mazzarino, M. | 2,020 ft |
Deepest first where depth is published. See all 132 wells →
Frequently asked questions
How many wells does Mazzarino M operate?
Mazzarino M is the operator of record for 132 catalogued oil & gas wells, with the largest concentration in Illinois (132). Only wells in states WellCensus has ingested are counted.
How many of Mazzarino M's wells are still active?
13 of Mazzarino M's catalogued wells are active; 113 are plugged & abandoned.
In which states does Mazzarino M operate wells?
Mazzarino M is the operator of record for wells in Illinois (132).
Does Mazzarino M operate mostly oil or gas wells?
46 of Mazzarino M's catalogued wells are oil wells and 1 are gas wells; the rest are injection, service or unclassified wells.
What is Mazzarino M's deepest well?
Among wells with a published depth, Simcox 1 in Marion, IL is the deepest at 4,160 ft.
Where Mazzarino M's wells are
About this data
Source: State oil & gas regulator registries (operator of record as filed, exact-normalized across states) plus the USGS United States Documented Orphaned Well Database (2026), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Mazzarino M — well portfolio”, https://wellcensus.com/operators/mazzarino-m-66245 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).