San Marco Petroleum
Operator of record for 14 catalogued wells across 4 states. Every well below links to its full registry page.
Filed as: SAN MARCO PETROLEUM INC · SAN MARCO PETROLEUM INC. · San Marco Petroleum, Inc.
At a glance
San Marco Petroleum is the operator of record for 14 catalogued U.S. oil & gas wells in 4 states. 1 (7%) are active, 13 (93%) plugged & abandoned. Its largest concentration is in Kansas, with 6 wells (43% of its portfolio).
Wells operated
14
Active
1
Plugged
13
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Kansas | 6 |
| Wyoming | 4 |
| Colorado | 3 |
| New Mexico | 1 |
Well mix
- Oil wells
- 2
- Gas wells
- 12
- Shut-in
- 0
- Active share
- 7%
Is this your company?
Claim San Marco Petroleum to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does San Marco Petroleum operate?
San Marco Petroleum's catalogued wells are spread across 4 states: Kansas (6), Wyoming (4), Colorado (3) and New Mexico (1). Its 4 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 San Marco Petroleum’s wells are active, plugged or orphaned?
7% of San Marco Petroleum's catalogued wells are active, 22 percentage points below the national share of 29%. 93% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does San Marco Petroleum operate?
By product class, 2 (14%) are oil wells and 12 (86%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Cirrus W-72472 1 in Campbell, WY at 12,053 ft. The wells listed below sit in Campbell (WY), Eddy (NM), Sweetwater (WY), La Plata (CO), Morgan (CO) and Fremont (CO) and other counties. 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 San Marco Petroleum
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Cirrus W-72472 1 | 49-005-27130 | Plugged & abandoned | Oil | Campbell, WY | San Marco Petroleum Inc | 12,053 ft |
| Avalon 32 Federal Com #001 | 30-015-22477 | Plugged & abandoned | Gas | Eddy, NM | San Marco Petroleum Inc. | 10,920 ft |
| Chorney W-8773 4-1 | 49-037-21407 | Plugged & abandoned | Gas | Sweetwater, WY | San Marco Petroleum Inc | 10,650 ft |
| Sibert Fed W-34900 1 | 49-037-21952 | Plugged & abandoned | Gas | Sweetwater, WY | San Marco Petroleum Inc | 10,484 ft |
| Federal 1-32 | 49-037-20503 | Plugged & abandoned | Gas | Sweetwater, WY | San Marco Petroleum Inc | 10,471 ft |
| 1 West Alkali Gulch | 05-067-06491 | Plugged & abandoned | Gas | La Plata, CO | San Marco Petroleum Inc | 10,005 ft |
| 1-B Frank | 05-087-07348 | Plugged & abandoned | Gas | Morgan, CO | San Marco Petroleum Inc | 6,410 ft |
| 1-20 Adamic | 05-043-06020 | Active | Oil | Fremont, CO | San Marco Petroleum Inc | 3,407 ft |
| Interstate 'C' 11 | 15-129-20469 | Plugged & abandoned | Gas | Morton, KS | San Marco Petroleum, Inc. | 1,355 ft |
| Interstate 'C' 10 | 15-129-20457 | Plugged & abandoned | Gas | Morton, KS | San Marco Petroleum, Inc. | 1,350 ft |
| Moore 'C' 1 | 15-129-20304 | Plugged & abandoned | Gas | Morton, KS | San Marco Petroleum, Inc. | 1,330 ft |
| Interstate 'C' 6 | 15-129-10198 | Plugged & abandoned | Gas | Morton, KS | San Marco Petroleum, Inc. | 1,289 ft |
Deepest first where depth is published. See all 14 wells →
Frequently asked questions
How many wells does San Marco Petroleum operate?
San Marco Petroleum is the operator of record for 14 catalogued oil & gas wells, with the largest concentration in Kansas (6). Only wells in states WellCensus has ingested are counted.
How many of San Marco Petroleum's wells are still active?
1 of San Marco Petroleum's catalogued wells are active; 13 are plugged & abandoned.
In which states does San Marco Petroleum operate wells?
San Marco Petroleum is the operator of record for wells in Kansas (6), Wyoming (4), Colorado (3) and New Mexico (1).
Does San Marco Petroleum operate mostly oil or gas wells?
2 of San Marco Petroleum's catalogued wells are oil wells and 12 are gas wells; the rest are injection, service or unclassified wells.
What is San Marco Petroleum's deepest well?
Among wells with a published depth, Cirrus W-72472 1 in Campbell, WY is the deepest at 12,053 ft.
Where San Marco Petroleum'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, “San Marco Petroleum — well portfolio”, https://wellcensus.com/operators/san-marco-petroleum-9397 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).