Zephyr Drilling
Operator of record for 15 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: ZEPHYR DRILLING CORP · Zephyr Drilling Company
At a glance
Zephyr Drilling is the operator of record for 15 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 15 (100%) are plugged & abandoned. Its largest concentration is in Colorado, with 12 wells (80% of its portfolio).
Wells operated
15
Active
0
Plugged
15
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 12 |
| Illinois | 2 |
| Wyoming | 1 |
Well mix
- Oil wells
- 1
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim Zephyr Drilling to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Zephyr Drilling operate?
Zephyr Drilling's catalogued wells are spread across 3 states: Colorado (12), Illinois (2) and Wyoming (1). Its 12 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 Zephyr Drilling’s wells are active, plugged or orphaned?
0% of Zephyr Drilling'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 Zephyr Drilling operate?
By product class, 1 (7%) 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 1 Wykoff in Adams, CO at 5,650 ft. The wells listed below sit in Adams (CO), Washington (CO), Logan (CO), Yuma (CO), Hamilton (IL) and Kit Carson (CO) and other counties. 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 Zephyr Drilling
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 1 Wykoff | 05-001-05368 | Plugged & abandoned | Other type | Adams, CO | Zephyr Drilling Corp | 5,650 ft |
| 1 Ostrum | 05-121-06308 | Plugged & abandoned | Other type | Washington, CO | Zephyr Drilling Corp | 5,090 ft |
| 1 Christiansen | 05-121-06575 | Plugged & abandoned | Other type | Washington, CO | Zephyr Drilling Corp | 5,081 ft |
| 1 State | 05-121-06995 | Plugged & abandoned | Other type | Washington, CO | Zephyr Drilling Corp | 5,017 ft |
| 1 Gielenz | 05-121-07396 | Plugged & abandoned | Other type | Washington, CO | Zephyr Drilling Corp | 4,430 ft |
| 1 State | 05-075-04357 | Plugged & abandoned | Other type | Logan, CO | Zephyr Drilling Corp | 4,357 ft |
| 1 Turvey | 05-125-05101 | Plugged & abandoned | Other type | Yuma, CO | Zephyr Drilling Corp | 3,666 ft |
| Stephens Wm 1 | 12-065-00251 | Plugged & abandoned | Other type | Hamilton, IL | Zephyr Drilling Company | 3,576 ft |
| 1 Chick | 05-125-05089 | Plugged & abandoned | Other type | Yuma, CO | Zephyr Drilling Corp | 3,517 ft |
| 1 Scruby | 05-063-05037 | Plugged & abandoned | Other type | Kit Carson, CO | Zephyr Drilling Corp | 2,952 ft |
| Mercer, George A. 1 | 12-121-01102 | Plugged & abandoned | Oil | Marion, IL | Zephyr Drilling Company | 2,135 ft |
| Linderman 1 | 49-003-05643 | Plugged & abandoned | Other type | Big Horn, WY | Zephyr Drilling Corp | 1,740 ft |
Deepest first where depth is published. See all 15 wells →
Frequently asked questions
How many wells does Zephyr Drilling operate?
Zephyr Drilling is the operator of record for 15 catalogued oil & gas wells, with the largest concentration in Colorado (12). Only wells in states WellCensus has ingested are counted.
How many of Zephyr Drilling's wells are still active?
0 of Zephyr Drilling's catalogued wells are active; 15 are plugged & abandoned.
In which states does Zephyr Drilling operate wells?
Zephyr Drilling is the operator of record for wells in Colorado (12), Illinois (2) and Wyoming (1).
Does Zephyr Drilling operate mostly oil or gas wells?
1 of Zephyr Drilling's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Zephyr Drilling's deepest well?
Among wells with a published depth, 1 Wykoff in Adams, CO is the deepest at 5,650 ft.
Where Zephyr Drilling'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, “Zephyr Drilling — well portfolio”, https://wellcensus.com/operators/zephyr-drilling-6042 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).