Calvert Petro
Operator of record for 7 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Calvert Petro is the operator of record for 7 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 7 (100%) are plugged & abandoned. Its largest concentration is in Illinois, with 7 wells (100% of its portfolio).
Wells operated
7
Active
0
Plugged
7
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 7 |
Well mix
- Oil wells
- 1
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Calvert Petro operate?
Calvert Petro's catalogued wells are spread across 1 state: Illinois (7). Its 7 Illinois wells are 0.0% 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 Calvert Petro’s wells are active, plugged or orphaned?
0% of Calvert Petro's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Calvert Petro operate?
By product class, 1 (14%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Pennington, Emma 1 in Wayne, IL at 3,258 ft. The wells listed below sit in Wayne (IL), Richland (IL), Saline (IL), Clinton (IL) and Edwards (IL).
Notable wells operated by Calvert Petro
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Pennington, Emma 1 | 12-191-03683 | Plugged & abandoned | Injection | Wayne, IL | Calvert Petro. Co. | 3,258 ft |
| Balding, L. 2 | 12-159-01530 | Plugged & abandoned | Injection | Richland, IL | Calvert Petro. Co. | 2,964 ft |
| Balding, L 6 | 12-159-01534 | Plugged & abandoned | Injection | Richland, IL | Calvert Petro. Co. | 2,963 ft |
| Endicott, M. 4 | 12-165-02226 | Plugged & abandoned | Injection | Saline, IL | Calvert Petro. Co. | 2,167 ft |
| Little, Elsie 1 | 12-027-01794 | Plugged & abandoned | Other type | Clinton, IL | Calvert Petro. Co. | 2,140 ft |
| Saxe-Campbell 2 | 12-047-01757 | Plugged & abandoned | Injection | Edwards, IL | Calvert Petro. Co. | 2,087 ft |
| Campbell-Saxe Comm 1 | 12-047-01756 | Plugged & abandoned | Oil | Edwards, IL | Calvert Petro. Co. | 2,076 ft |
Deepest first where depth is published. See all 7 wells →
Frequently asked questions
How many wells does Calvert Petro operate?
Calvert Petro is the operator of record for 7 catalogued oil & gas wells, with the largest concentration in Illinois (7). Only wells in states WellCensus has ingested are counted.
How many of Calvert Petro's wells are still active?
0 of Calvert Petro's catalogued wells are active; 7 are plugged & abandoned.
In which states does Calvert Petro operate wells?
Calvert Petro is the operator of record for wells in Illinois (7).
Does Calvert Petro operate mostly oil or gas wells?
1 of Calvert Petro's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Calvert Petro's deepest well?
Among wells with a published depth, Pennington, Emma 1 in Wayne, IL is the deepest at 3,258 ft.
Where Calvert Petro'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, “Calvert Petro — well portfolio”, https://wellcensus.com/operators/calvert-petro-94553 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).