Neptune Operating
Operator of record for 523 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Neptune Operating is the operator of record for 523 catalogued U.S. oil & gas wells in 1 state. 430 (82%) are active, 20 (4%) plugged & abandoned and 8 flagged as orphaned. Its largest concentration is in North Dakota, with 523 wells (100% of its portfolio).
Wells operated
523
Active
430
Plugged
20
Orphaned
8
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 523 |
Well mix
- Oil wells
- 508
- Gas wells
- 0
- Shut-in
- 32
- Active share
- 82%
Is this your company?
Claim Neptune Operating to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Neptune Operating operate?
Neptune Operating's catalogued wells are spread across 1 state: North Dakota (523). Its 523 North Dakota wells are 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 Neptune Operating’s wells are active, plugged or orphaned?
82% of Neptune Operating's catalogued wells are active, 53 percentage points above the national share of 29%. 4% are plugged & abandoned, against 47% nationally. 32 wells (6%) are shut-in — unplugged but idle. 8 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Neptune Operating operate?
By product class, 508 (97%) 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 Foster 4-9-16 #4h in Williams, ND at 27,770 ft. The wells listed below sit in Williams (ND) and Mckenzie (ND).
Notable wells operated by Neptune Operating
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Foster 4-9-16 #4h | 33-105-06463 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,770 ft |
| Foster 4-9-16 #3H | 33-105-06168 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,360 ft |
| Heen S 152-104-5-17-1H | 33-105-05683 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,318 ft |
| Heen South 5-8-17 #7H | 33-105-06118 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,284 ft |
| Foster 4-9-16 #1H | 33-105-06167 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,270 ft |
| Heen S 152-104-5-17-2H | 33-105-05719 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,178 ft |
| Heen South 5-8-17 #6H | 33-105-06117 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,174 ft |
| Foster 4-9-16 #2H | 33-105-06137 | Active | Oil | Williams, ND | Neptune Operating LLC | 27,130 ft |
| Fritz 20-29-32 #2H | 33-053-10067 | Active | Oil | Mckenzie, ND | Neptune Operating LLC | 26,815 ft |
| Jacobson 17-8-5 #2H | 33-053-10069 | Active | Oil | Mckenzie, ND | Neptune Operating LLC | 26,665 ft |
| Lee South 17-8-5 #7H | 33-053-10278 | Active | Oil | Mckenzie, ND | Neptune Operating LLC | 26,645 ft |
| Jacobson 17-8-5 #3H | 33-053-10068 | Active | Oil | Mckenzie, ND | Neptune Operating LLC | 26,625 ft |
Deepest first where depth is published. See all 523 wells →
Frequently asked questions
How many wells does Neptune Operating operate?
Neptune Operating is the operator of record for 523 catalogued oil & gas wells, with the largest concentration in North Dakota (523). Only wells in states WellCensus has ingested are counted.
How many of Neptune Operating's wells are still active?
430 of Neptune Operating's catalogued wells are active; 20 are plugged & abandoned and 8 are flagged as orphaned.
In which states does Neptune Operating operate wells?
Neptune Operating is the operator of record for wells in North Dakota (523).
Does Neptune Operating operate mostly oil or gas wells?
508 of Neptune Operating's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Neptune Operating's deepest well?
Among wells with a published depth, Foster 4-9-16 #4h in Williams, ND is the deepest at 27,770 ft.
Where Neptune Operating'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, “Neptune Operating — well portfolio”, https://wellcensus.com/operators/neptune-operating-2511 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).