Gilliam Oil
Operator of record for 60 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: GILLIAM OIL CO · GILLIAM OIL COMPANY · Gilliam Oil Company
At a glance
Gilliam Oil is the operator of record for 60 catalogued U.S. oil & gas wells in 2 states. 12 (20%) are active, 29 (48%) plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Kentucky, with 50 wells (83% of its portfolio).
Wells operated
60
Active
12
Plugged
29
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Kentucky | 50 |
| Illinois | 10 |
Well mix
- Oil wells
- 17
- Gas wells
- 0
- Shut-in
- 1
- Active share
- 20%
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Claim Gilliam Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Gilliam Oil operate?
Gilliam Oil's catalogued wells are spread across 2 states: Kentucky (50) and Illinois (10). Its 50 Kentucky wells are 0.0% of the 201,022 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 Gilliam Oil’s wells are active, plugged or orphaned?
20% of Gilliam Oil's catalogued wells are active, 9 percentage points below the national share of 29%. 48% are plugged & abandoned, against 47% nationally. 1 wells (2%) are shut-in — unplugged but idle. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Gilliam Oil operate?
By product class, 17 (28%) 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 Grisham 1 in Saline, IL at 3,245 ft. The wells listed below sit in Saline (IL), Webster (KY), Wabash (IL), Clay (IL) and Henderson (KY). State filings spell the name 3 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Gilliam Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Grisham 1 | 12-165-02641 | Plugged & abandoned | Other type | Saline, IL | Gilliam Oil Company | 3,245 ft |
| Hayes, Geo H 1 | 16-233-01841 | Plugged & abandoned | Other type | Webster, KY | Gilliam Oil Co | 3,225 ft |
| Garner Lloyd 1 | 12-185-00993 | Plugged & abandoned | Other type | Wabash, IL | Gilliam Oil Company | 3,037 ft |
| Bible, C. E. 1 | 12-025-01337 | Plugged & abandoned | Other type | Clay, IL | Gilliam Oil Company | 3,027 ft |
| Hering H L 1 | 12-185-00995 | Active | Oil | Wabash, IL | Gilliam Oil Company | 2,971 ft |
| Cabell, W H 2 | KGS record 48441 | Plugged & abandoned | Other type | Henderson, KY | Gilliam Oil Co | 2,732 ft |
| Cabell, W H 1(6) | KGS record 48354 | Plugged & abandoned | Other type | Henderson, KY | Gilliam Oil Co | 2,731 ft |
| Johnson, J W 1 | KGS record 61845 | Plugged & abandoned | Other type | Webster, KY | Gilliam Oil Co | 2,693 ft |
| Keach, W A 1 | KGS record 2019994 | Plugged & abandoned | Other type | Henderson, KY | Gilliam Oil Co | 2,359 ft |
| Grisham F J 1 | 12-165-02676 | Plugged & abandoned | Other type | Saline, IL | Gilliam Oil Company | 2,143 ft |
| Kennard Alfred 10-A | 12-185-02504 | Plugged & abandoned | Other type | Wabash, IL | Gilliam Oil Company | 2,043 ft |
| Kennard Alfred 11 | 12-185-02511 | Active | Oil | Wabash, IL | Gilliam Oil Company | 2,029 ft |
Deepest first where depth is published. See all 60 wells →
Frequently asked questions
How many wells does Gilliam Oil operate?
Gilliam Oil is the operator of record for 60 catalogued oil & gas wells, with the largest concentration in Kentucky (50). Only wells in states WellCensus has ingested are counted.
How many of Gilliam Oil's wells are still active?
12 of Gilliam Oil's catalogued wells are active; 29 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Gilliam Oil operate wells?
Gilliam Oil is the operator of record for wells in Kentucky (50) and Illinois (10).
Does Gilliam Oil operate mostly oil or gas wells?
17 of Gilliam Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Gilliam Oil's deepest well?
Among wells with a published depth, Grisham 1 in Saline, IL is the deepest at 3,245 ft.
Where Gilliam 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, “Gilliam Oil — well portfolio”, https://wellcensus.com/operators/gilliam-oil-68125 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).