Flg Oil
Operator of record for 10 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Flg Oil is the operator of record for 10 catalogued U.S. oil & gas wells in 1 state. 9 (90%) are active, 1 (10%) plugged & abandoned. Its largest concentration is in Illinois, with 10 wells (100% of its portfolio).
Wells operated
10
Active
9
Plugged
1
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 10 |
Well mix
- Oil wells
- 9
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 90%
Is this your company?
Claim Flg Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Flg Oil operate?
Flg Oil's catalogued wells are spread across 1 state: Illinois (10). Its 10 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 Flg Oil’s wells are active, plugged or orphaned?
90% of Flg Oil's catalogued wells are active, 61 percentage points above the national share of 29%. 10% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Flg Oil operate?
By product class, 9 (90%) 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 Gillespie 9 in Lawrence, IL at 1,316 ft.
Notable wells operated by Flg Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Gillespie 9 | 12-101-07286 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,316 ft |
| Gillespie Heirs Comm. 3 | 12-101-07278 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,275 ft |
| Gillespie Hrs 2 | 12-101-05407 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,270 ft |
| Gillespie Heirs 7 | 12-101-07287 | Plugged & abandoned | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,270 ft |
| Gillespie Heirs 1 | 12-101-01162 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,268 ft |
| Gillespie Hrs 4 | 12-101-07266 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,257 ft |
| Gillespie Hrs 6 | 12-101-07470 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 1,002 ft |
| Gillespie Heirs 8 | 12-101-07288 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 850 ft |
| Beard, Kiburn J. 1 | 12-101-06693 | Active | Oil | Lawrence, IL | F. L. G. Oil Corp. | 825 ft |
| Gillespie W-1 | 12-101-07500 | Active | Injection | Lawrence, IL | F. L. G. Oil Corp. | 800 ft |
Deepest first where depth is published. See all 10 wells →
Frequently asked questions
How many wells does Flg Oil operate?
Flg Oil is the operator of record for 10 catalogued oil & gas wells, with the largest concentration in Illinois (10). Only wells in states WellCensus has ingested are counted.
How many of Flg Oil's wells are still active?
9 of Flg Oil's catalogued wells are active; 1 are plugged & abandoned.
In which states does Flg Oil operate wells?
Flg Oil is the operator of record for wells in Illinois (10).
Does Flg Oil operate mostly oil or gas wells?
9 of Flg Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Flg Oil's deepest well?
Among wells with a published depth, Gillespie 9 in Lawrence, IL is the deepest at 1,316 ft.
Where Flg Oil'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, “Flg Oil — well portfolio”, https://wellcensus.com/operators/flg-oil-103417 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).