Calvert Drilling & Producing
Operator of record for 38 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: CALVERT DRILLING & PRODUCING CO. · Calvert Drilling & Producing Co.
At a glance
Calvert Drilling & Producing is the operator of record for 38 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 37 (97%) are plugged & abandoned. Its largest concentration is in North Dakota, with 21 wells (55% of its portfolio).
Wells operated
38
Active
0
Plugged
37
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 21 |
| Montana | 17 |
Well mix
- Oil wells
- 22
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim Calvert Drilling & Producing to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Calvert Drilling & Producing operate?
Calvert Drilling & Producing's catalogued wells are spread across 2 states: North Dakota (21) and Montana (17). Its 21 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 Calvert Drilling & Producing’s wells are active, plugged or orphaned?
0% of Calvert Drilling & Producing's catalogued wells are active, 29 percentage points below the national share of 29%. 97% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Calvert Drilling & Producing operate?
By product class, 22 (58%) 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 Jack Skarda 1 in Mckenzie, ND at 11,510 ft. The wells listed below sit in Mckenzie (ND), Bowman (ND), Billings (ND), Williams (ND) and Sheridan (MT). 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 Calvert Drilling & Producing
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Jack Skarda 1 | 33-053-00536 | Plugged & abandoned | Oil | Mckenzie, ND | Calvert Drilling & Producing Co. | 11,510 ft |
| Muirhead-Helseth Unit 1 | 33-053-00535 | Plugged & abandoned | Oil | Mckenzie, ND | Calvert Drilling & Producing Co. | 11,443 ft |
| USA Peterson 1a | 33-053-02198 | Plugged & abandoned | Oil | Mckenzie, ND | Calvert Drilling & Producing Co. | 10,510 ft |
| Harley Olson 1 | 33-053-00576 | Plugged & abandoned | Oil | Mckenzie, ND | Calvert Drilling & Producing Co. | 9,510 ft |
| C. Holocek 17-4 | 33-011-00150 | Plugged & abandoned | Oil | Bowman, ND | Calvert Drilling & Producing Co. | 9,425 ft |
| Holocek-Olson Unit 18-4 | 33-011-00155 | Plugged & abandoned | Oil | Bowman, ND | Calvert Drilling & Producing Co. | 9,404 ft |
| U.S.A. 1 | 33-007-00064 | Plugged & abandoned | Oil | Billings, ND | Calvert Drilling & Producing Co. | 9,275 ft |
| Eide Unit 1 | 33-105-00663 | Plugged & abandoned | Oil | Williams, ND | Calvert Drilling & Producing Co. | 9,270 ft |
| Thorson 1-A | 25-091-21015 | Plugged & abandoned | Other type | Sheridan, MT | Calvert Drilling & Producing Co. | 8,991 ft |
| E. Gudvangen 1 | 33-105-00651 | Plugged & abandoned | Oil | Williams, ND | Calvert Drilling & Producing Co. | 8,260 ft |
| Siggaard-Fed. Land Bank 1 | 25-091-05046 | Plugged & abandoned | Other type | Sheridan, MT | Calvert Drilling & Producing Co. | 8,060 ft |
| Goedert 2 | 33-105-00646 | Plugged & abandoned | Oil | Williams, ND | Calvert Drilling & Producing Co. | 7,915 ft |
Deepest first where depth is published. See all 38 wells →
Frequently asked questions
How many wells does Calvert Drilling & Producing operate?
Calvert Drilling & Producing is the operator of record for 38 catalogued oil & gas wells, with the largest concentration in North Dakota (21). Only wells in states WellCensus has ingested are counted.
How many of Calvert Drilling & Producing's wells are still active?
0 of Calvert Drilling & Producing's catalogued wells are active; 37 are plugged & abandoned.
In which states does Calvert Drilling & Producing operate wells?
Calvert Drilling & Producing is the operator of record for wells in North Dakota (21) and Montana (17).
Does Calvert Drilling & Producing operate mostly oil or gas wells?
22 of Calvert Drilling & Producing's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Calvert Drilling & Producing's deepest well?
Among wells with a published depth, Jack Skarda 1 in Mckenzie, ND is the deepest at 11,510 ft.
Where Calvert Drilling & Producing'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, “Calvert Drilling & Producing — well portfolio”, https://wellcensus.com/operators/calvert-drilling-producing-2383 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).