Signal Drilling & Expl
Operator of record for 72 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Signal Drilling & Expl is the operator of record for 72 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 69 (96%) are plugged & abandoned. Its largest concentration is in Montana, with 72 wells (100% of its portfolio).
Wells operated
72
Active
0
Plugged
69
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 72 |
Well mix
- Oil wells
- 2
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Signal Drilling & Expl operate?
Signal Drilling & Expl's catalogued wells are spread across 1 state: Montana (72). Its 72 Montana wells are 0.2% 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 Signal Drilling & Expl’s wells are active, plugged or orphaned?
0% of Signal Drilling & Expl's catalogued wells are active, 29 percentage points below the national share of 29%. 96% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Signal Drilling & Expl operate?
By product class, 2 (3%) 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 Anderson 1 in Sheridan, MT at 11,180 ft. The wells listed below sit in Sheridan (MT), Roosevelt (MT) and Daniels (MT).
Notable wells operated by Signal Drilling & Expl
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Anderson 1 | 25-091-05061 | Plugged & abandoned | Other type | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 11,180 ft |
| Romo 1 | 25-085-05001 | Plugged & abandoned | Other type | Roosevelt, MT | Signal Drilling & Expl. Co. Inc. | 9,452 ft |
| Miller 1 | 25-019-05082 | Plugged & abandoned | Other type | Daniels, MT | Signal Drilling & Expl. Co. Inc. | 9,338 ft |
| Nuhring 1 | 25-019-05020 | Plugged & abandoned | Other type | Daniels, MT | Signal Drilling & Expl. Co. Inc. | 9,272 ft |
| Wagar-Miller 1 | 25-019-05029 | Plugged & abandoned | Other type | Daniels, MT | Signal Drilling & Expl. Co. Inc. | 9,114 ft |
| Ueland 1 | 25-091-05304 | Plugged & abandoned | Other type | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 9,085 ft |
| Johnson 1 | 25-091-05301 | Plugged & abandoned | Other type | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 9,080 ft |
| Nesbit 1 | 25-085-05293 | Plugged & abandoned | Other type | Roosevelt, MT | Signal Drilling & Expl. Co. Inc. | 8,670 ft |
| Willumsen 1 | 25-091-05067 | Plugged & abandoned | Oil | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 8,017 ft |
| Morin 1 | 25-091-05007 | Plugged & abandoned | Other type | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 8,000 ft |
| Henke 1 | 25-091-05011 | Plugged & abandoned | Other type | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 7,990 ft |
| Delonais 1 | 25-091-05025 | Plugged & abandoned | Other type | Sheridan, MT | Signal Drilling & Expl. Co. Inc. | 7,975 ft |
Deepest first where depth is published. See all 72 wells →
Frequently asked questions
How many wells does Signal Drilling & Expl operate?
Signal Drilling & Expl is the operator of record for 72 catalogued oil & gas wells, with the largest concentration in Montana (72). Only wells in states WellCensus has ingested are counted.
How many of Signal Drilling & Expl's wells are still active?
0 of Signal Drilling & Expl's catalogued wells are active; 69 are plugged & abandoned.
In which states does Signal Drilling & Expl operate wells?
Signal Drilling & Expl is the operator of record for wells in Montana (72).
Does Signal Drilling & Expl operate mostly oil or gas wells?
2 of Signal Drilling & Expl's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Signal Drilling & Expl's deepest well?
Among wells with a published depth, Anderson 1 in Sheridan, MT is the deepest at 11,180 ft.
Where Signal Drilling & Expl'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, “Signal Drilling & Expl — well portfolio”, https://wellcensus.com/operators/signal-drilling-expl-127061 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).