John L Cox
Operator of record for 15 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: JOHN L COX · JOHN L. COX
At a glance
John L Cox is the operator of record for 15 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 14 (93%) are plugged & abandoned. Its largest concentration is in North Dakota, with 9 wells (60% of its portfolio).
Wells operated
15
Active
0
Plugged
14
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 9 |
| New Mexico | 6 |
Well mix
- Oil wells
- 15
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim John L Cox to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does John L Cox operate?
John L Cox's catalogued wells are spread across 2 states: North Dakota (9) and New Mexico (6). Its 9 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 John L Cox’s wells are active, plugged or orphaned?
0% of John L Cox's catalogued wells are active, 29 percentage points below the national share of 29%. 93% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does John L Cox operate?
By product class, 15 (100%) 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 Mildred 1 in Mckenzie, ND at 13,500 ft. The wells listed below sit in Mckenzie (ND), Dunn (ND), Lea (NM), Williams (ND), Billings (ND) and Stark (ND) and other counties. 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 John L Cox
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Mildred 1 | 33-053-02220 | Plugged & abandoned | Oil | Mckenzie, ND | John L. Cox | 13,500 ft |
| Kupper 1 | 33-025-00443 | Plugged & abandoned | Oil | Dunn, ND | John L. Cox | 11,660 ft |
| Mts Bowline Federal 34-1 | 33-053-02130 | Plugged & abandoned | Oil | Mckenzie, ND | John L. Cox | 11,450 ft |
| State 14 #001 | 30-025-33817 | Plugged & abandoned | Oil | Lea, NM | John L Cox | 11,161 ft |
| Alfred Tofte 1 | 33-105-01387 | Plugged & abandoned | Oil | Williams, ND | John L. Cox | 10,369 ft |
| State 14-A #001 | 30-025-34920 | Plugged & abandoned | Oil | Lea, NM | John L Cox | 9,780 ft |
| Martin 2-33 | 33-105-01378 | Plugged & abandoned | Oil | Williams, ND | John L. Cox | 9,550 ft |
| Martin 16-33 | 33-105-01314 | Plugged & abandoned | Oil | Williams, ND | John L. Cox | 9,460 ft |
| North Rocky Ridge Federal 1 | 33-007-01142 | Plugged & abandoned | Oil | Billings, ND | John L. Cox | 9,200 ft |
| State-Jearmchuck 1 | 33-089-00327 | Plugged & abandoned | Oil | Stark, ND | John L. Cox | 8,150 ft |
| Post 1 | 33-013-00852 | Plugged & abandoned | Oil | Burke, ND | John L. Cox | 6,800 ft |
| Meyers #003 | 30-025-21023 | Plugged & abandoned | Oil | Lea, NM | John L Cox | 6,318 ft |
Deepest first where depth is published. See all 15 wells →
Frequently asked questions
How many wells does John L Cox operate?
John L Cox is the operator of record for 15 catalogued oil & gas wells, with the largest concentration in North Dakota (9). Only wells in states WellCensus has ingested are counted.
How many of John L Cox's wells are still active?
0 of John L Cox's catalogued wells are active; 14 are plugged & abandoned.
In which states does John L Cox operate wells?
John L Cox is the operator of record for wells in North Dakota (9) and New Mexico (6).
Does John L Cox operate mostly oil or gas wells?
15 of John L Cox's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is John L Cox's deepest well?
Among wells with a published depth, Mildred 1 in Mckenzie, ND is the deepest at 13,500 ft.
Where John L Cox'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, “John L Cox — well portfolio”, https://wellcensus.com/operators/john-l-cox-10929 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).