Frontier Petro
Operator of record for 7 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: Frontier Petro Co · Frontier Petro.
At a glance
Frontier Petro is the operator of record for 7 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 7 (100%) are plugged & abandoned. Its largest concentration is in Illinois, with 5 wells (71% of its portfolio).
Wells operated
7
Active
0
Plugged
7
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 5 |
| California | 2 |
Well mix
- Oil wells
- 2
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Frontier Petro to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Frontier Petro operate?
Frontier Petro's catalogued wells are spread across 2 states: Illinois (5) and California (2). Its 5 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 Frontier Petro’s wells are active, plugged or orphaned?
0% of Frontier 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 Frontier Petro operate?
By product class, 2 (29%) 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 Trimmer L E 2 in Wayne, IL at 3,110 ft. The wells listed below sit in Wayne (IL), Jasper (IL), Riverside (CA) and San Luis Obispo (CA). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Frontier Petro
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Trimmer L E 2 | 12-191-04146 | Plugged & abandoned | Other type | Wayne, IL | Frontier Petro Co | 3,110 ft |
| Trimmer L E 1 | 12-191-03968 | Plugged & abandoned | Oil | Wayne, IL | Frontier Petro Co | 3,087 ft |
| Wagner, E. O. 1 | 12-079-01022 | Plugged & abandoned | Oil | Jasper, IL | Frontier Petro Co | 3,048 ft |
| Wilkin, M. P. 1 | 12-079-01028 | Plugged & abandoned | Other type | Jasper, IL | Frontier Petro Co | 3,042 ft |
| Gill Rex 1 | 12-191-03795 | Plugged & abandoned | Other type | Wayne, IL | Frontier Petro Co | 3,011 ft |
| Barger 1 | 04-065-00089 | Plugged & abandoned | Other type | Riverside, CA | Frontier Petro. | — |
| Cook 1 | 04-079-00239 | Plugged & abandoned | Other type | San Luis Obispo, CA | Frontier Petro. | — |
Deepest first where depth is published. See all 7 wells →
Frequently asked questions
How many wells does Frontier Petro operate?
Frontier Petro is the operator of record for 7 catalogued oil & gas wells, with the largest concentration in Illinois (5). Only wells in states WellCensus has ingested are counted.
How many of Frontier Petro's wells are still active?
0 of Frontier Petro's catalogued wells are active; 7 are plugged & abandoned.
In which states does Frontier Petro operate wells?
Frontier Petro is the operator of record for wells in Illinois (5) and California (2).
Does Frontier Petro operate mostly oil or gas wells?
2 of Frontier Petro's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Frontier Petro's deepest well?
Among wells with a published depth, Trimmer L E 2 in Wayne, IL is the deepest at 3,110 ft.
Where Frontier 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, “Frontier Petro — well portfolio”, https://wellcensus.com/operators/frontier-petro-37787 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).