Gallagher Drilling
Operator of record for 44 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: GALLAGHER DRILLING INC · GALLAGHER DRILLING, INC · Gallagher Drilling, Inc.
At a glance
Gallagher Drilling is the operator of record for 44 catalogued U.S. oil & gas wells in 3 states. 16 (36%) are active, 22 (50%) plugged & abandoned. Its largest concentration is in Illinois, with 33 wells (75% of its portfolio).
Wells operated
44
Active
16
Plugged
22
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 33 |
| Wyoming | 8 |
| Kentucky | 3 |
Well mix
- Oil wells
- 20
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 36%
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Claim your operator profileWhere does Gallagher Drilling operate?
Gallagher Drilling's catalogued wells are spread across 3 states: Illinois (33), Wyoming (8) and Kentucky (3). Its 33 Illinois wells are 0.0% of the 174,478 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 Gallagher Drilling’s wells are active, plugged or orphaned?
36% of Gallagher Drilling's catalogued wells are active, 8 percentage points above the national share of 29%. 50% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Gallagher Drilling operate?
By product class, 20 (45%) 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 State-Brown B 1 in Campbell, WY at 8,095 ft. The wells listed below sit in Campbell (WY), Crook (WY), Washakie (WY), Saline (IL), White (IL) and Wabash (IL) and other counties. 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 Gallagher Drilling
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| State-Brown B 1 | 49-005-25508 | Plugged & abandoned | Oil | Campbell, WY | Gallagher Drilling Inc | 8,095 ft |
| Brown State 1 | 49-005-25446 | Plugged & abandoned | Oil | Campbell, WY | Gallagher Drilling Inc | 8,060 ft |
| Brown-State 4 | 49-005-25626 | Plugged & abandoned | Oil | Campbell, WY | Gallagher Drilling Inc | 7,960 ft |
| Kottraba 1 | 49-011-21124 | Plugged & abandoned | Oil | Crook, WY | Gallagher Drilling Inc | 6,856 ft |
| Kottraba 2 | 49-011-21149 | Plugged & abandoned | Oil | Crook, WY | Gallagher Drilling Inc | 6,760 ft |
| Robinson 20-12 | 49-011-21424 | Plugged & abandoned | Oil | Crook, WY | Gallagher Drilling Inc | 6,300 ft |
| Evans Fee 1 | 49-011-21183 | Plugged & abandoned | Oil | Crook, WY | Gallagher Drilling Inc | 6,177 ft |
| Fusselman-Edwards 1 | 49-043-20300 | Plugged & abandoned | Oil | Washakie, WY | Gallagher Drilling Inc | 5,375 ft |
| Ellis 1 | 12-165-25444 | Active | Injection | Saline, IL | Gallagher Drilling, Inc. | 4,050 ft |
| Grayville, City of 6 | 12-193-31921 | Other status | Other type | White, IL | Gallagher Drilling, Inc. | 3,880 ft |
| Dunn 64X-11 | 12-185-26560 | Active | Oil | Wabash, IL | Gallagher Drilling, Inc. | 3,850 ft |
| Kimbrell 1 | 12-191-08128 | Plugged & abandoned | Injection | Wayne, IL | Gallagher Drilling, Inc. | 3,391 ft |
Deepest first where depth is published. See all 44 wells →
Frequently asked questions
How many wells does Gallagher Drilling operate?
Gallagher Drilling is the operator of record for 44 catalogued oil & gas wells, with the largest concentration in Illinois (33). Only wells in states WellCensus has ingested are counted.
How many of Gallagher Drilling's wells are still active?
16 of Gallagher Drilling's catalogued wells are active; 22 are plugged & abandoned.
In which states does Gallagher Drilling operate wells?
Gallagher Drilling is the operator of record for wells in Illinois (33), Wyoming (8) and Kentucky (3).
Does Gallagher Drilling operate mostly oil or gas wells?
20 of Gallagher Drilling's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Gallagher Drilling's deepest well?
Among wells with a published depth, State-Brown B 1 in Campbell, WY is the deepest at 8,095 ft.
Where Gallagher Drilling'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, “Gallagher Drilling — well portfolio”, https://wellcensus.com/operators/gallagher-drilling-35016 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).