Hall Oil
Operator of record for 13 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: HALL OIL · Hall Oil Company
At a glance
Hall Oil is the operator of record for 13 catalogued U.S. oil & gas wells in 3 states. 1 (8%) are active, 11 (85%) plugged & abandoned. Its largest concentration is in Wyoming, with 7 wells (54% of its portfolio).
Wells operated
13
Active
1
Plugged
11
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Wyoming | 7 |
| Kansas | 5 |
| Montana | 1 |
Well mix
- Oil wells
- 8
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 8%
Is this your company?
Claim Hall Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Hall Oil operate?
Hall Oil's catalogued wells are spread across 3 states: Wyoming (7), Kansas (5) and Montana (1). Its 7 Wyoming wells are 0.0% of the 129,957 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 Hall Oil’s wells are active, plugged or orphaned?
8% of Hall Oil's catalogued wells are active, 21 percentage points below the national share of 29%. 85% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Hall Oil operate?
By product class, 8 (62%) 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 Enos S 4 in Fremont, WY at 2,775 ft. The wells listed below sit in Fremont (WY), Wilson (KS) and Carbon (MT). 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 Hall Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Enos S 4 | 49-013-06311 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 2,775 ft |
| Enos S 18 | 49-013-06276 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 2,775 ft |
| 1 | 49-013-06350 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 2,390 ft |
| Tribal 1 | 49-013-06326 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 1,610 ft |
| Apex 3 1 | 49-013-06325 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 1,602 ft |
| Pilot 3 | 49-013-06307 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 1,067 ft |
| BILL McMILLEN 7-INJ | 15-205-24250 | Plugged & abandoned | Injection | Wilson, KS | Hall Oil Company | 980 ft |
| Pilot 2 | 49-013-06322 | Plugged & abandoned | Oil | Fremont, WY | Hall Oil | 788 ft |
| BILL McMILLEN 8-INJ | 15-205-24251 | Plugged & abandoned | Injection | Wilson, KS | Hall Oil Company | 687 ft |
| Bill Mcmillen 12-Inj | 15-205-24966 | Plugged & abandoned | Injection | Wilson, KS | Hall Oil Company | 670 ft |
| Well 1 | 25-009-06426 | Plugged & abandoned | Other type | Carbon, MT | Hall Oil Company | 391 ft |
| C. Reaves 2 | 15-205-23608 | Active | Oil | Wilson, KS | Hall Oil Company | — |
Deepest first where depth is published. See all 13 wells →
Frequently asked questions
How many wells does Hall Oil operate?
Hall Oil is the operator of record for 13 catalogued oil & gas wells, with the largest concentration in Wyoming (7). Only wells in states WellCensus has ingested are counted.
How many of Hall Oil's wells are still active?
1 of Hall Oil's catalogued wells are active; 11 are plugged & abandoned.
In which states does Hall Oil operate wells?
Hall Oil is the operator of record for wells in Wyoming (7), Kansas (5) and Montana (1).
Does Hall Oil operate mostly oil or gas wells?
8 of Hall Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Hall Oil's deepest well?
Among wells with a published depth, Enos S 4 in Fremont, WY is the deepest at 2,775 ft.
Where Hall 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, “Hall Oil — well portfolio”, https://wellcensus.com/operators/hall-oil-39030 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).