Herndon Drilling
Operator of record for 218 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: HERNDON DRILLING · HERNDON DRILLING CO · Herndon Drilling Company
At a glance
Herndon Drilling is the operator of record for 218 catalogued U.S. oil & gas wells in 3 states. 31 (14%) are active, 184 (84%) plugged & abandoned. Its largest concentration is in Illinois, with 186 wells (85% of its portfolio).
Wells operated
218
Active
31
Plugged
184
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 186 |
| Colorado | 30 |
| Kentucky | 2 |
Well mix
- Oil wells
- 99
- Gas wells
- 0
- Shut-in
- 1
- Active share
- 14%
Is this your company?
Claim Herndon Drilling to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Herndon Drilling operate?
Herndon Drilling's catalogued wells are spread across 3 states: Illinois (186), Colorado (30) and Kentucky (2). Its 186 Illinois wells are 0.1% 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 Herndon Drilling’s wells are active, plugged or orphaned?
14% of Herndon Drilling's catalogued wells are active, 15 percentage points below the national share of 29%. 84% are plugged & abandoned, against 47% nationally. 1 wells (0.5%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Herndon Drilling operate?
By product class, 99 (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 1 James Hegarty in Morgan, CO at 7,863 ft. The wells listed below sit in Morgan (CO), Weld (CO) and Logan (CO). 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 Herndon Drilling
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 1 James Hegarty | 05-087-05325 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 7,863 ft |
| 3 Cuykendall | 05-123-05098 | Plugged & abandoned | Other type | Weld, CO | Herndon Drilling Co | 7,085 ft |
| 1 Pauline Kiesel | 05-123-05449 | Plugged & abandoned | Other type | Weld, CO | Herndon Drilling Co | 6,500 ft |
| 1 Hegarty G | 05-087-05276 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 6,350 ft |
| A-2 Hegarty | 05-087-05135 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 6,335 ft |
| 1 Hegarty F | 05-087-05311 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 6,315 ft |
| 1 Hegarty B | 05-087-05108 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 6,313 ft |
| 1 Hegarty C | 05-087-05199 | Plugged & abandoned | Oil | Morgan, CO | Herndon Drilling Co | 6,300 ft |
| 2 Hagerty E | 05-087-05197 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 6,247 ft |
| 1 Hegarty E | 05-087-05198 | Plugged & abandoned | Oil | Morgan, CO | Herndon Drilling Co | 6,218 ft |
| 1 Hegarty H | 05-087-05329 | Plugged & abandoned | Other type | Morgan, CO | Herndon Drilling Co | 6,165 ft |
| 2 Kester | 05-075-06716 | Plugged & abandoned | Other type | Logan, CO | Herndon Drilling Co | 5,828 ft |
Deepest first where depth is published. See all 218 wells →
Frequently asked questions
How many wells does Herndon Drilling operate?
Herndon Drilling is the operator of record for 218 catalogued oil & gas wells, with the largest concentration in Illinois (186). Only wells in states WellCensus has ingested are counted.
How many of Herndon Drilling's wells are still active?
31 of Herndon Drilling's catalogued wells are active; 184 are plugged & abandoned.
In which states does Herndon Drilling operate wells?
Herndon Drilling is the operator of record for wells in Illinois (186), Colorado (30) and Kentucky (2).
Does Herndon Drilling operate mostly oil or gas wells?
99 of Herndon Drilling's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Herndon Drilling's deepest well?
Among wells with a published depth, 1 James Hegarty in Morgan, CO is the deepest at 7,863 ft.
Where Herndon 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, “Herndon Drilling — well portfolio”, https://wellcensus.com/operators/herndon-drilling-4629 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).