Nielco
Operator of record for 13 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Nielco is the operator of record for 13 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 13 (100%) are plugged & abandoned. Its largest concentration is in Montana, with 13 wells (100% of its portfolio).
Wells operated
13
Active
0
Plugged
13
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 13 |
Well mix
- Oil wells
- 8
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Nielco to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Nielco operate?
Nielco's catalogued wells are spread across 1 state: Montana (13). Its 13 Montana wells are 0.0% of the 42,011 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 Nielco’s wells are active, plugged or orphaned?
0% of Nielco'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 Nielco operate?
By product class, 8 (62%) 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 Anderson 33-24 in Sheridan, MT at 7,410 ft. The wells listed below sit in Sheridan (MT) and Musselshell (MT).
Notable wells operated by Nielco
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Anderson 33-24 | 25-091-21655 | Plugged & abandoned | Other type | Sheridan, MT | Nielco, Inc. | 7,410 ft |
| VanArsdale-Hall 1 SWD | 25-065-05024 | Plugged & abandoned | Injection | Musselshell, MT | Nielco, Inc. | 5,042 ft |
| Van Arsdale-Hall 32X-3 | 25-065-21664 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,901 ft |
| Van Arsdale Hall 42X-3 | 25-065-21667 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,895 ft |
| Van Arsdale-Hall 41X-3 | 25-065-21631 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,877 ft |
| Van Arsdale Hall 11X-1 | 25-065-21625 | Plugged & abandoned | Other type | Musselshell, MT | Nielco, Inc. | 4,390 ft |
| Van Arsdale Hall 12X-1R | 25-065-21475 | Plugged & abandoned | Injection | Musselshell, MT | Nielco, Inc. | 4,325 ft |
| Faull 32-34 | 25-065-21434 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,320 ft |
| Van Arsdale-Hall 14-27 | 25-065-21454 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,285 ft |
| Kindleman 21-34 | 25-065-21440 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,279 ft |
| Kindleman 11-34 | 25-065-21762 | Plugged & abandoned | Oil | Musselshell, MT | Nielco, Inc. | 4,240 ft |
| Kindleman 12-34 | 25-065-21451 | Plugged & abandoned | Injection | Musselshell, MT | Nielco, Inc. | 4,236 ft |
Deepest first where depth is published. See all 13 wells →
Frequently asked questions
How many wells does Nielco operate?
Nielco is the operator of record for 13 catalogued oil & gas wells, with the largest concentration in Montana (13). Only wells in states WellCensus has ingested are counted.
How many of Nielco's wells are still active?
0 of Nielco's catalogued wells are active; 13 are plugged & abandoned.
In which states does Nielco operate wells?
Nielco is the operator of record for wells in Montana (13).
Does Nielco operate mostly oil or gas wells?
8 of Nielco's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Nielco's deepest well?
Among wells with a published depth, Anderson 33-24 in Sheridan, MT is the deepest at 7,410 ft.
Where Nielco'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, “Nielco — well portfolio”, https://wellcensus.com/operators/nielco-128183 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).