Tamarin
Operator of record for 7 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Tamarin is the operator of record for 7 catalogued U.S. oil & gas wells in 1 state. 5 (71%) are active, 2 (29%) plugged & abandoned. Its largest concentration is in Illinois, with 7 wells (100% of its portfolio).
Wells operated
7
Active
5
Plugged
2
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 7 |
Well mix
- Oil wells
- 2
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 71%
Is this your company?
Claim Tamarin to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Tamarin operate?
Tamarin's catalogued wells are spread across 1 state: Illinois (7). Its 7 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 Tamarin’s wells are active, plugged or orphaned?
71% of Tamarin's catalogued wells are active, 43 percentage points above the national share of 29%. 29% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Tamarin operate?
By product class, 2 (29%) 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 Simpson-Walters 1-SWD in Sangamon, IL at 1,778 ft. The wells listed below sit in Sangamon (IL) and Shelby (IL).
Notable wells operated by Tamarin
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Simpson-Walters 1-SWD | 12-167-00823 | Active | Injection | Sangamon, IL | Tamarin, Inc. | 1,778 ft |
| Spicer 2-B | 12-167-24673 | Active | Oil | Sangamon, IL | Tamarin, Inc. | 1,691 ft |
| Eberspacher 4 | 12-173-23099 | Plugged & abandoned | Other type | Shelby, IL | Tamarin, Inc. | 1,550 ft |
| Eberspacher 5-A | 12-173-23083 | Active | Oil | Shelby, IL | Tamarin, Inc. | 1,540 ft |
| Eberspacher 5 | 12-173-23100 | Plugged & abandoned | Other type | Shelby, IL | Tamarin, Inc. | 1,525 ft |
| Eberspacher 4-A SWI | 12-173-22586 | Active | Injection | Shelby, IL | Tamarin, Inc. | 1,508 ft |
| Eberspacher 3-A | 12-173-22582 | Active | Injection | Shelby, IL | Tamarin, Inc. | 0 ft |
Deepest first where depth is published. See all 7 wells →
Frequently asked questions
How many wells does Tamarin operate?
Tamarin is the operator of record for 7 catalogued oil & gas wells, with the largest concentration in Illinois (7). Only wells in states WellCensus has ingested are counted.
How many of Tamarin's wells are still active?
5 of Tamarin's catalogued wells are active; 2 are plugged & abandoned.
In which states does Tamarin operate wells?
Tamarin is the operator of record for wells in Illinois (7).
Does Tamarin operate mostly oil or gas wells?
2 of Tamarin's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Tamarin's deepest well?
Among wells with a published depth, Simpson-Walters 1-SWD in Sangamon, IL is the deepest at 1,778 ft.
Where Tamarin'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, “Tamarin — well portfolio”, https://wellcensus.com/operators/tamarin-109695 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).