Medders Oil
Operator of record for 22 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: MEDDERS OIL COMPANY · MEDDERS OIL COMPANY INC · Medders Oil
At a glance
Medders Oil is the operator of record for 22 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 22 (100%) are plugged & abandoned. Its largest concentration is in Louisiana, with 11 wells (50% of its portfolio).
Wells operated
22
Active
0
Plugged
22
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Louisiana | 11 |
| Oklahoma | 8 |
| Montana | 3 |
Well mix
- Oil wells
- 2
- Gas wells
- 3
- Shut-in
- 0
- Active share
- 0%
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Claim Medders Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Medders Oil operate?
Medders Oil's catalogued wells are spread across 3 states: Louisiana (11), Oklahoma (8) and Montana (3). Its 3 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 Medders Oil’s wells are active, plugged or orphaned?
0% of Medders Oil'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 Medders Oil operate?
By product class, 2 (9%) are oil wells and 3 (14%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is T I Heinen 001 in Jefferson Davis, LA at 9,468 ft. The wells listed below sit in Jefferson Davis (LA), Acadia (LA), Calcasieu (LA), Evangeline (LA), Allen (LA) and Golden Valley (MT). 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 Medders Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| T I Heinen 001 | 17-053-20656 | Plugged & abandoned | Gas | Jefferson Davis, LA | Medders Oil Company | 9,468 ft |
| John A Treme Swd 001 | 17-053-00992 | Plugged & abandoned | Other type | Jefferson Davis, LA | Medders Oil Company | 9,353 ft |
| Maccabees 001 | 17-001-20524 | Plugged & abandoned | Other type | Acadia, LA | Medders Oil Company | 9,000 ft |
| Choupique Enterprises 003 | 17-019-21143 | Plugged & abandoned | Other type | Calcasieu, LA | Medders Oil Company | 8,625 ft |
| Choupique Enterprises 004 | 17-019-21223 | Plugged & abandoned | Other type | Calcasieu, LA | Medders Oil Company | 8,615 ft |
| Choupique Enterprises Inc 001-D | 17-019-20898 | Plugged & abandoned | Gas | Calcasieu, LA | Medders Oil Company | 8,610 ft |
| Choupique Enterprises Inc 002 | 17-019-20991 | Plugged & abandoned | Other type | Calcasieu, LA | Medders Oil Company | 8,600 ft |
| Calvin Smith 001 | 17-039-20169 | Plugged & abandoned | Other type | Evangeline, LA | Medders Oil Company | 8,515 ft |
| Vua; John A. Treme 001 | 17-053-20108 | Plugged & abandoned | Oil | Jefferson Davis, LA | Medders Oil Company | 8,250 ft |
| Choupique Enterprises Inc 005 | 17-019-21352 | Plugged & abandoned | Gas | Calcasieu, LA | Medders Oil Company | 8,015 ft |
| Pinelands-Edwards 001 | 17-003-20143 | Plugged & abandoned | Other type | Allen, LA | Medders Oil Company | 5,941 ft |
| Horpstad 1 | 25-037-21025 | Plugged & abandoned | Other type | Golden Valley, MT | Medders Oil | 3,020 ft |
Deepest first where depth is published. See all 22 wells →
Frequently asked questions
How many wells does Medders Oil operate?
Medders Oil is the operator of record for 22 catalogued oil & gas wells, with the largest concentration in Louisiana (11). Only wells in states WellCensus has ingested are counted.
How many of Medders Oil's wells are still active?
0 of Medders Oil's catalogued wells are active; 22 are plugged & abandoned.
In which states does Medders Oil operate wells?
Medders Oil is the operator of record for wells in Louisiana (11), Oklahoma (8) and Montana (3).
Does Medders Oil operate mostly oil or gas wells?
2 of Medders Oil's catalogued wells are oil wells and 3 are gas wells; the rest are injection, service or unclassified wells.
What is Medders Oil's deepest well?
Among wells with a published depth, T I Heinen 001 in Jefferson Davis, LA is the deepest at 9,468 ft.
Where Medders Oil'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, “Medders Oil — well portfolio”, https://wellcensus.com/operators/medders-oil-5014 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).