Southern Union Exploration
Operator of record for 20 catalogued wells across 7 states. Every well below links to its full registry page.
Filed as: SOUTHERN UNION EXPLORATION · SOUTHERN UNION EXPLORATION CO · SOUTHERN UNION EXPLORATION CO. · Southern Union Exploration · …
At a glance
Southern Union Exploration is the operator of record for 20 catalogued U.S. oil & gas wells in 7 states. None is listed as active, 15 (75%) are plugged & abandoned. Its largest concentration is in North Dakota, with 7 wells (35% of its portfolio).
Wells operated
20
Active
0
Plugged
15
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 7 |
| Arkansas | 5 |
| New Mexico | 3 |
| Louisiana | 2 |
| Oklahoma | 1 |
| Utah | 1 |
| Wyoming | 1 |
Well mix
- Oil wells
- 9
- Gas wells
- 5
- Shut-in
- 0
- Active share
- 0%
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Claim Southern Union Exploration to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Southern Union Exploration operate?
Southern Union Exploration's catalogued wells are spread across 7 states: North Dakota (7), Arkansas (5), New Mexico (3), Louisiana (2) and Oklahoma (1) and 2 more. Its 7 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 Southern Union Exploration’s wells are active, plugged or orphaned?
0% of Southern Union Exploration's catalogued wells are active, 29 percentage points below the national share of 29%. 75% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Southern Union Exploration operate?
By product class, 9 (45%) are oil wells and 5 (25%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Norstog 2-13 in Mckenzie, ND at 14,200 ft. The wells listed below sit in Mckenzie (ND), St Martin (LA), Lea (NM), East Carroll (LA), Crook (WY) and San Juan (NM) and other counties. State filings spell the name 5 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Southern Union Exploration
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Norstog 2-13 | 33-053-01932 | Plugged & abandoned | Oil | Mckenzie, ND | Southern Union Exploration Co. | 14,200 ft |
| Dodge A-1 | 33-053-01789 | Plugged & abandoned | Oil | Mckenzie, ND | Southern Union Exploration Co. | 14,110 ft |
| H Melancon Et Al 001 | 17-099-21338 | Plugged & abandoned | Other type | St Martin, LA | Southern Union Exploration Co. | 13,357 ft |
| Susco Bough C Unit #002 | 30-025-27276 | Plugged & abandoned | Oil | Lea, NM | Southern Union Exploration Co | 9,681 ft |
| Gordon Brown 001 | 17-035-20070 | Other status | Other type | East Carroll, LA | Southern Union Exploration Co. | 7,700 ft |
| Shiloh Federal 2-5 | 49-011-22163 | Plugged & abandoned | Oil | Crook, WY | Southern Union Exploration | 7,500 ft |
| Foster #004 | 30-045-06042 | Plugged & abandoned | Gas | San Juan, NM | Southern Union Exploration Co | 7,048 ft |
| Nahlen 1-28 | 03-071-10181 | Plugged & abandoned | Gas | Johnson, AR | Southern Union Exploration Co | 6,610 ft |
| Holly Bloomfield 1 | 33-013-01060 | Plugged & abandoned | Oil | Burke, ND | Southern Union Exploration Co. | 6,554 ft |
| Olson 1 | 33-013-01006 | Plugged & abandoned | Oil | Burke, ND | Southern Union Exploration Co. | 6,125 ft |
| Snd 26-163-91 1 | 33-013-01003 | Plugged & abandoned | Oil | Burke, ND | Southern Union Exploration Co. | 6,050 ft |
| Olson 2 | 33-013-01032 | Plugged & abandoned | Oil | Burke, ND | Southern Union Exploration Co. | 6,030 ft |
Deepest first where depth is published. See all 20 wells →
Frequently asked questions
How many wells does Southern Union Exploration operate?
Southern Union Exploration is the operator of record for 20 catalogued oil & gas wells, with the largest concentration in North Dakota (7). Only wells in states WellCensus has ingested are counted.
How many of Southern Union Exploration's wells are still active?
0 of Southern Union Exploration's catalogued wells are active; 15 are plugged & abandoned.
In which states does Southern Union Exploration operate wells?
Southern Union Exploration is the operator of record for wells in North Dakota (7), Arkansas (5), New Mexico (3), Louisiana (2), Oklahoma (1), Utah (1) and Wyoming (1).
Does Southern Union Exploration operate mostly oil or gas wells?
9 of Southern Union Exploration's catalogued wells are oil wells and 5 are gas wells; the rest are injection, service or unclassified wells.
What is Southern Union Exploration's deepest well?
Among wells with a published depth, Norstog 2-13 in Mckenzie, ND is the deepest at 14,200 ft.
Where Southern Union Exploration's wells are
- Oil & gas wells in North Dakota· 7 operated by Southern Union Exploration
- Oil & gas wells in Arkansas· 5 operated by Southern Union Exploration
- Oil & gas wells in New Mexico· 3 operated by Southern Union Exploration
- Oil & gas wells in Louisiana· 2 operated by Southern Union Exploration
- Oil & gas wells in Oklahoma· 1 operated by Southern Union Exploration
- Oil & gas wells in Utah· 1 operated by Southern Union Exploration
- Largest U.S. well operators
- All well operators
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, “Southern Union Exploration — well portfolio”, https://wellcensus.com/operators/southern-union-exploration-11055 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).