Silurian
Operator of record for 99 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Silurian is the operator of record for 99 catalogued U.S. oil & gas wells in 1 state. 39 (39%) are active, 22 (22%) plugged & abandoned. Its largest concentration is in Illinois, with 99 wells (100% of its portfolio).
Wells operated
99
Active
39
Plugged
22
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 99 |
Well mix
- Oil wells
- 48
- Gas wells
- 1
- Shut-in
- 9
- Active share
- 39%
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Claim Silurian to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Silurian operate?
Silurian's catalogued wells are spread across 1 state: Illinois (99). Its 99 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 Silurian’s wells are active, plugged or orphaned?
39% of Silurian's catalogued wells are active, 11 percentage points above the national share of 29%. 22% are plugged & abandoned, against 47% nationally. 9 wells (9%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Silurian operate?
By product class, 48 (48%) are oil wells and 1 (1%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Tanquary, T. J. 3 in Lawrence, IL at 1,935 ft.
Notable wells operated by Silurian
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Tanquary, T. J. 3 | 12-101-10017 | Plugged & abandoned | Other type | Lawrence, IL | Silurian Co. | 1,935 ft |
| Hinkle H. D. 16 | 12-101-09305 | Other status | Other type | Lawrence, IL | Silurian Co. | 1,920 ft |
| Tanquary, T. J. 1 | 12-101-10015 | Plugged & abandoned | Other type | Lawrence, IL | Silurian Co. | 1,919 ft |
| Whittaker, D. 1 | 12-101-10569 | Shut-in | Other type | Lawrence, IL | Silurian Co. | 1,907 ft |
| Crump William 21 | 12-101-04408 | Plugged & abandoned | Oil | Lawrence, IL | Silurian Co. | 1,901 ft |
| Neal W E 1 | 12-101-04894 | Plugged & abandoned | Other type | Lawrence, IL | Silurian Co. | 1,874 ft |
| Tanquary, T. J. 2 | 12-101-10016 | Shut-in | Other type | Lawrence, IL | Silurian Co. | 1,869 ft |
| Hinkle H. D. 15 | 12-101-09304 | Other status | Other type | Lawrence, IL | Silurian Co. | 1,845 ft |
| Rogers 5 | 12-101-03944 | Plugged & abandoned | Other type | Lawrence, IL | Silurian Co. | 1,782 ft |
| Rogers 5 | 12-101-08646 | Active | Oil | Lawrence, IL | Silurian Co. | 1,782 ft |
| Hinkle 6 | 12-101-09300 | Other status | Other type | Lawrence, IL | Silurian Co. | 1,778 ft |
| Hinkle 7 | 12-101-09301 | Other status | Other type | Lawrence, IL | Silurian Co. | 1,778 ft |
Deepest first where depth is published. See all 99 wells →
Frequently asked questions
How many wells does Silurian operate?
Silurian is the operator of record for 99 catalogued oil & gas wells, with the largest concentration in Illinois (99). Only wells in states WellCensus has ingested are counted.
How many of Silurian's wells are still active?
39 of Silurian's catalogued wells are active; 22 are plugged & abandoned.
In which states does Silurian operate wells?
Silurian is the operator of record for wells in Illinois (99).
Does Silurian operate mostly oil or gas wells?
48 of Silurian's catalogued wells are oil wells and 1 are gas wells; the rest are injection, service or unclassified wells.
What is Silurian's deepest well?
Among wells with a published depth, Tanquary, T. J. 3 in Lawrence, IL is the deepest at 1,935 ft.
Where Silurian'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, “Silurian — well portfolio”, https://wellcensus.com/operators/silurian-95407 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).