Excelsior Oil
Operator of record for 20 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: EXCELSIOR OIL CORP · Excelsior Oil Co. · Excelsior Oil Corporation
At a glance
Excelsior Oil is the operator of record for 20 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 20 (100%) are plugged & abandoned. Its largest concentration is in Colorado, with 18 wells (90% of its portfolio).
Wells operated
20
Active
0
Plugged
20
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 18 |
| California | 1 |
| Kansas | 1 |
Well mix
- Oil wells
- 4
- Gas wells
- 4
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Excelsior Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Excelsior Oil operate?
Excelsior Oil's catalogued wells are spread across 3 states: Colorado (18), California (1) and Kansas (1). Its 18 Colorado wells are 0.0% of the 124,327 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 Excelsior Oil’s wells are active, plugged or orphaned?
0% of Excelsior Oil'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 Excelsior Oil operate?
By product class, 4 (20%) are oil wells and 4 (20%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is 1 Barber in Morgan, CO at 6,334 ft. The wells listed below sit in Morgan (CO), Weld (CO), Prowers (CO), Kearny (KS) and Logan (CO). 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 Excelsior Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 1 Barber | 05-087-06120 | Plugged & abandoned | Gas | Morgan, CO | Excelsior Oil Corp | 6,334 ft |
| 1 J M Dille | 05-087-06411 | Plugged & abandoned | Other type | Morgan, CO | Excelsior Oil Corp | 6,110 ft |
| 1 Alice G Nay | 05-123-08285 | Plugged & abandoned | Oil | Weld, CO | Excelsior Oil Corp | 5,650 ft |
| 1 Duncan - Unit | 05-099-05018 | Plugged & abandoned | Other type | Prowers, CO | Excelsior Oil Corp | 5,185 ft |
| 1 Excelsior Et Al-Bailey B | 05-099-05013 | Plugged & abandoned | Other type | Prowers, CO | Excelsior Oil Corp | 5,150 ft |
| Schaffer 2 | 15-093-30061 | Plugged & abandoned | Injection | Kearny, KS | Excelsior Oil Corporation | 5,053 ft |
| 1 County | 05-075-05223 | Plugged & abandoned | Other type | Logan, CO | Excelsior Oil Corp | 4,857 ft |
| 1 State F | 05-075-05205 | Plugged & abandoned | Gas | Logan, CO | Excelsior Oil Corp | 4,576 ft |
| A-1 State 694 | 05-075-05144 | Plugged & abandoned | Other type | Logan, CO | Excelsior Oil Corp | 4,558 ft |
| 11-I Atwood East Unit | 05-075-05267 | Plugged & abandoned | Other type | Logan, CO | Excelsior Oil Corp | 4,542 ft |
| 2 Miller | 05-075-05303 | Plugged & abandoned | Other type | Logan, CO | Excelsior Oil Corp | 4,534 ft |
| 3 Kaepernik | 05-075-05285 | Plugged & abandoned | Other type | Logan, CO | Excelsior Oil Corp | 4,525 ft |
Deepest first where depth is published. See all 20 wells →
Frequently asked questions
How many wells does Excelsior Oil operate?
Excelsior Oil is the operator of record for 20 catalogued oil & gas wells, with the largest concentration in Colorado (18). Only wells in states WellCensus has ingested are counted.
How many of Excelsior Oil's wells are still active?
0 of Excelsior Oil's catalogued wells are active; 20 are plugged & abandoned.
In which states does Excelsior Oil operate wells?
Excelsior Oil is the operator of record for wells in Colorado (18), California (1) and Kansas (1).
Does Excelsior Oil operate mostly oil or gas wells?
4 of Excelsior Oil's catalogued wells are oil wells and 4 are gas wells; the rest are injection, service or unclassified wells.
What is Excelsior Oil's deepest well?
Among wells with a published depth, 1 Barber in Morgan, CO is the deepest at 6,334 ft.
Where Excelsior 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, “Excelsior Oil — well portfolio”, https://wellcensus.com/operators/excelsior-oil-7877 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).