Mcmillan Lark
Operator of record for 3 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mcmillan Lark is the operator of record for 3 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 3 (100%) are plugged & abandoned. Its largest concentration is in Colorado, with 3 wells (100% of its portfolio).
Wells operated
3
Active
0
Plugged
3
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 3 |
Well mix
- Oil wells
- 3
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Mcmillan Lark operate?
Mcmillan Lark's catalogued wells are spread across 1 state: Colorado (3). Its 3 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 Mcmillan Lark’s wells are active, plugged or orphaned?
0% of Mcmillan Lark'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 Mcmillan Lark operate?
By product class, 3 (100%) 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 Mancos Creek in Montezuma, CO at 388 ft.
Notable wells operated by Mcmillan Lark
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 1 Mancos Creek | 05-083-05030 | Plugged & abandoned | Oil | Montezuma, CO | Mcmillan* Lark | 388 ft |
| 4 Mancos Creek | 05-083-05369 | Plugged & abandoned | Oil | Montezuma, CO | Mcmillan* Lark | 348 ft |
| 1-A Mancos Creek | 05-083-05031 | Plugged & abandoned | Oil | Montezuma, CO | Mcmillan* Lark | 304 ft |
Deepest first where depth is published. See all 3 wells →
Frequently asked questions
How many wells does Mcmillan Lark operate?
Mcmillan Lark is the operator of record for 3 catalogued oil & gas wells, with the largest concentration in Colorado (3). Only wells in states WellCensus has ingested are counted.
How many of Mcmillan Lark's wells are still active?
0 of Mcmillan Lark's catalogued wells are active; 3 are plugged & abandoned.
In which states does Mcmillan Lark operate wells?
Mcmillan Lark is the operator of record for wells in Colorado (3).
Does Mcmillan Lark operate mostly oil or gas wells?
3 of Mcmillan Lark's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mcmillan Lark's deepest well?
Among wells with a published depth, 1 Mancos Creek in Montezuma, CO is the deepest at 388 ft.
Where Mcmillan Lark'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, “Mcmillan Lark — well portfolio”, https://wellcensus.com/operators/mcmillan-lark-5275 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).