Welsh Oil
Operator of record for 46 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: WELSH OIL CO · Welsh Oil Co., Inc.
At a glance
Welsh Oil is the operator of record for 46 catalogued U.S. oil & gas wells in 2 states. 1 (2%) are active, 1 (2%) plugged & abandoned. Its largest concentration is in Michigan, with 45 wells (98% of its portfolio).
Wells operated
46
Active
1
Plugged
1
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Michigan | 45 |
| Arkansas | 1 |
Well mix
- Oil wells
- 1
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 2%
Is this your company?
Claim Welsh Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Welsh Oil operate?
Welsh Oil's catalogued wells are spread across 2 states: Michigan (45) and Arkansas (1). Its 45 Michigan wells are 0.1% of the 85,673 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 Welsh Oil’s wells are active, plugged or orphaned?
2% of Welsh Oil's catalogued wells are active, 27 percentage points below the national share of 29%. 2% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Welsh Oil operate?
By product class, 1 (2%) 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 Denmon 1 in Columbia, AR at 11,506 ft. The wells listed below sit in Columbia (AR), Oceana (MI), Arenac (MI), Muskegon (MI) and Mason (MI). 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 Welsh Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Denmon 1 | 03-027-11486 | Active | Oil | Columbia, AR | Welsh Oil Co., Inc. | 11,506 ft |
| Branstrom, H. 1 | 21-127-08184 | Other status | Other type | Oceana, MI | Welsh Oil Co | 2,879 ft |
| Robinson, Bertha 1 | 21-011-12090 | Other status | Other type | Arenac, MI | Welsh Oil Co | 2,867 ft |
| Robinson, Bertha 3 | 21-011-12674 | Other status | Other type | Arenac, MI | Welsh Oil Co | 2,853 ft |
| Lund, Ida 1 | 21-121-06526 | Other status | Other type | Muskegon, MI | Welsh Oil Co | 2,280 ft |
| Freeland, Chancy 1 | 21-127-15514 | Other status | Other type | Oceana, MI | Welsh Oil Co | 2,213 ft |
| Munger, L. P. 1 | 21-127-13552 | Other status | Other type | Oceana, MI | Welsh Oil Co | 2,197 ft |
| Munger, L. P. 2 | 21-127-14509 | Other status | Other type | Oceana, MI | Welsh Oil Co | 2,167 ft |
| Lacomte, A. 1 | 21-127-07742 | Other status | Other type | Oceana, MI | Welsh Oil Co | 2,120 ft |
| Wright, Shelton 2 | 21-105-14320 | Other status | Other type | Mason, MI | Welsh Oil Co | 2,112 ft |
| Wright, Shelton 1 | 21-105-14077 | Other status | Other type | Mason, MI | Welsh Oil Co | 2,106 ft |
| State & Summit 2 | 21-105-14499 | Other status | Other type | Mason, MI | Welsh Oil Co | 2,088 ft |
Deepest first where depth is published. See all 46 wells →
Frequently asked questions
How many wells does Welsh Oil operate?
Welsh Oil is the operator of record for 46 catalogued oil & gas wells, with the largest concentration in Michigan (45). Only wells in states WellCensus has ingested are counted.
How many of Welsh Oil's wells are still active?
1 of Welsh Oil's catalogued wells are active; 1 are plugged & abandoned.
In which states does Welsh Oil operate wells?
Welsh Oil is the operator of record for wells in Michigan (45) and Arkansas (1).
Does Welsh Oil operate mostly oil or gas wells?
1 of Welsh Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Welsh Oil's deepest well?
Among wells with a published depth, Denmon 1 in Columbia, AR is the deepest at 11,506 ft.
Where Welsh 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, “Welsh Oil — well portfolio”, https://wellcensus.com/operators/welsh-oil-114731 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).