South Ranch Oil
Operator of record for 31 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: SOUTH RANCH OIL COMPANY INC · SOUTH RANCH OIL COMPANY, INC. · South Ranch Oil
At a glance
South Ranch Oil is the operator of record for 31 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 26 (84%) are plugged & abandoned and 2 flagged as orphaned. Its largest concentration is in North Dakota, with 16 wells (52% of its portfolio).
Wells operated
31
Active
0
Plugged
26
Orphaned
2
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 16 |
| Oklahoma | 14 |
| Montana | 1 |
Well mix
- Oil wells
- 19
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim South Ranch Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does South Ranch Oil operate?
South Ranch Oil's catalogued wells are spread across 3 states: North Dakota (16), Oklahoma (14) and Montana (1). Its 16 North Dakota wells are 0.0% of the 43,680 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 South Ranch Oil’s wells are active, plugged or orphaned?
0% of South Ranch Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 84% are plugged & abandoned, against 47% nationally. 2 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does South Ranch Oil operate?
By product class, 19 (61%) 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 Karbowski 1 in Mountrail, ND at 8,200 ft. The wells listed below sit in Mountrail (ND), Burke (ND), Renville (ND), Bottineau (ND), Pierce (ND) and Rolette (ND). 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 South Ranch Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Karbowski 1 | 33-061-00237 | Plugged & abandoned | Oil | Mountrail, ND | South Ranch Oil Company, Inc. | 8,200 ft |
| Lukach 1 | 33-013-00840 | Plugged & abandoned | Oil | Burke, ND | South Ranch Oil Company, Inc. | 6,370 ft |
| Bly 1 | 33-013-00815 | Plugged & abandoned | Oil | Burke, ND | South Ranch Oil Company, Inc. | 6,087 ft |
| Ness 1 | 33-013-00841 | Plugged & abandoned | Oil | Burke, ND | South Ranch Oil Company, Inc. | 6,055 ft |
| Siebert 1 | 33-075-00835 | Plugged & abandoned | Oil | Renville, ND | South Ranch Oil Company, Inc. | 5,225 ft |
| Palmer 1 | 33-075-00961 | Plugged & abandoned | Oil | Renville, ND | South Ranch Oil Company, Inc. | 4,584 ft |
| Feland 1 | 33-009-01436 | Plugged & abandoned | Oil | Bottineau, ND | South Ranch Oil Company, Inc. | 3,750 ft |
| Wangler 1 | 33-069-00037 | Plugged & abandoned | Oil | Pierce, ND | South Ranch Oil Company, Inc. | 3,315 ft |
| Medlang 1 | 33-079-00038 | Plugged & abandoned | Oil | Rolette, ND | South Ranch Oil Company, Inc. | 3,246 ft |
| Halvorson 1 | 33-009-01373 | Plugged & abandoned | Oil | Bottineau, ND | South Ranch Oil Company, Inc. | 3,182 ft |
| Biberdorf 1 | 33-009-01517 | Plugged & abandoned | Oil | Bottineau, ND | South Ranch Oil Company, Inc. | 2,910 ft |
| Brossart 1 | 33-069-00039 | Plugged & abandoned | Oil | Pierce, ND | South Ranch Oil Company, Inc. | 2,880 ft |
Deepest first where depth is published. See all 31 wells →
Frequently asked questions
How many wells does South Ranch Oil operate?
South Ranch Oil is the operator of record for 31 catalogued oil & gas wells, with the largest concentration in North Dakota (16). Only wells in states WellCensus has ingested are counted.
How many of South Ranch Oil's wells are still active?
0 of South Ranch Oil's catalogued wells are active; 26 are plugged & abandoned and 2 are flagged as orphaned.
In which states does South Ranch Oil operate wells?
South Ranch Oil is the operator of record for wells in North Dakota (16), Oklahoma (14) and Montana (1).
Does South Ranch Oil operate mostly oil or gas wells?
19 of South Ranch Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is South Ranch Oil's deepest well?
Among wells with a published depth, Karbowski 1 in Mountrail, ND is the deepest at 8,200 ft.
Where South Ranch 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, “South Ranch Oil — well portfolio”, https://wellcensus.com/operators/south-ranch-oil-12092 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).