Prima Exploration
Operator of record for 157 catalogued wells across 5 states. Every well below links to its full registry page.
Filed as: PRIMA EXPLORATION INC · PRIMA EXPLORATION, INC. · Prima Exploration, Inc.
At a glance
Prima Exploration is the operator of record for 157 catalogued U.S. oil & gas wells in 5 states. 75 (48%) are active, 43 (27%) plugged & abandoned. Its largest concentration is in Wyoming, with 70 wells (45% of its portfolio).
Wells operated
157
Active
75
Plugged
43
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Wyoming | 70 |
| North Dakota | 42 |
| Montana | 29 |
| Colorado | 11 |
| New Mexico | 5 |
Well mix
- Oil wells
- 125
- Gas wells
- 2
- Shut-in
- 13
- Active share
- 48%
Is this your company?
Claim Prima Exploration to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Prima Exploration operate?
Prima Exploration's catalogued wells are spread across 5 states: Wyoming (70), North Dakota (42), Montana (29), Colorado (11) and New Mexico (5). Its 42 North Dakota wells are 0.1% 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 Prima Exploration’s wells are active, plugged or orphaned?
48% of Prima Exploration's catalogued wells are active, 19 percentage points above the national share of 29%. 27% are plugged & abandoned, against 47% nationally. 13 wells (8%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Prima Exploration operate?
By product class, 125 (80%) are oil wells and 2 (1%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Bullion 13-1 1H in Roosevelt, MT at 26,308 ft. The wells listed below sit in Roosevelt (MT), Richland (MT), Williams (ND), Billings (ND), Stark (ND) and Mckenzie (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 Prima Exploration
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Bullion 13-1 1H | 25-085-22028 | Active | Oil | Roosevelt, MT | Prima Exploration, Inc. | 26,308 ft |
| Bullion 13-1 2H | 25-085-22027 | Active | Oil | Roosevelt, MT | Prima Exploration, Inc. | 25,522 ft |
| Christiansen 34-12-1H | 25-083-23056 | Active | Oil | Richland, MT | Prima Exploration, Inc. | 22,177 ft |
| Sundance Kid 1H | 25-083-23420 | Active | Oil | Richland, MT | Prima Exploration, Inc. | 21,400 ft |
| Butch Cassidy 4H | 25-083-23428 | Active | Oil | Richland, MT | Prima Exploration, Inc. | 21,234 ft |
| Elzy Lay 1h | 33-105-05966 | Active | Oil | Williams, ND | Prima Exploration, Inc. | 21,227 ft |
| Elzy Lay 2h | 33-105-05965 | Active | Oil | Williams, ND | Prima Exploration, Inc. | 21,202 ft |
| Fairfield State 21-16-1hre | 33-007-01712 | Active | Oil | Billings, ND | Prima Exploration, Inc. | 21,200 ft |
| Wock 21-2-1h | 33-089-00643 | Active | Oil | Stark, ND | Prima Exploration, Inc. | 21,151 ft |
| Prewitt 21-25-4H | 25-083-23257 | Active | Oil | Richland, MT | Prima Exploration, Inc. | 21,133 ft |
| Heiser 11-2-1h | 33-053-04353 | Active | Oil | Mckenzie, ND | Prima Exploration, Inc. | 21,100 ft |
| Sundance Kid 4H | 25-083-23423 | Active | Oil | Richland, MT | Prima Exploration, Inc. | 21,081 ft |
Deepest first where depth is published. See all 157 wells →
Frequently asked questions
How many wells does Prima Exploration operate?
Prima Exploration is the operator of record for 157 catalogued oil & gas wells, with the largest concentration in Wyoming (70). Only wells in states WellCensus has ingested are counted.
How many of Prima Exploration's wells are still active?
75 of Prima Exploration's catalogued wells are active; 43 are plugged & abandoned.
In which states does Prima Exploration operate wells?
Prima Exploration is the operator of record for wells in Wyoming (70), North Dakota (42), Montana (29), Colorado (11) and New Mexico (5).
Does Prima Exploration operate mostly oil or gas wells?
125 of Prima Exploration's catalogued wells are oil wells and 2 are gas wells; the rest are injection, service or unclassified wells.
What is Prima Exploration's deepest well?
Among wells with a published depth, Bullion 13-1 1H in Roosevelt, MT is the deepest at 26,308 ft.
Where Prima Exploration's wells are
- Oil & gas wells in Wyoming· 70 operated by Prima Exploration
- Oil & gas wells in North Dakota· 42 operated by Prima Exploration
- Oil & gas wells in Montana· 29 operated by Prima Exploration
- Oil & gas wells in Colorado· 11 operated by Prima Exploration
- Oil & gas wells in New Mexico· 5 operated by Prima Exploration
- Largest U.S. well operators
- All well operators
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, “Prima Exploration — well portfolio”, https://wellcensus.com/operators/prima-exploration-5252 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).