Group One Lsg & Dev
Operator of record for 5 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Group One Lsg & Dev is the operator of record for 5 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 3 (60%) are plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Illinois, with 5 wells (100% of its portfolio).
Wells operated
5
Active
0
Plugged
3
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 5 |
Well mix
- Oil wells
- 1
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Group One Lsg & Dev operate?
Group One Lsg & Dev's catalogued wells are spread across 1 state: Illinois (5). Its 5 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 Group One Lsg & Dev’s wells are active, plugged or orphaned?
0% of Group One Lsg & Dev's catalogued wells are active, 29 percentage points below the national share of 29%. 60% are plugged & abandoned, against 47% nationally. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Group One Lsg & Dev operate?
By product class, 1 (20%) 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 Tillet 1 in Schuyler, IL at 611 ft. The wells listed below sit in Schuyler (IL), Brown (IL) and Jersey (IL).
Notable wells operated by Group One Lsg & Dev
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Tillet 1 | 12-169-21114 | Orphaned | Oil | Schuyler, IL | Group One Lsg & Dev | 611 ft |
| Worthington Farm 2 | 12-009-21230 | Plugged & abandoned | Other type | Brown, IL | Group One Lsg & Dev | 590 ft |
| Jones 2 | 12-083-20404 | Plugged & abandoned | Other type | Jersey, IL | Group One Lsg & Dev | 463 ft |
| Jones 3 | 12-083-20403 | Plugged & abandoned | Other type | Jersey, IL | Group One Lsg & Dev | 461 ft |
| Markert, Anthony 1 | 12-009-21123 | Other status | Other type | Brown, IL | Group One Lsg & Dev | 0 ft |
Deepest first where depth is published. See all 5 wells →
Frequently asked questions
How many wells does Group One Lsg & Dev operate?
Group One Lsg & Dev is the operator of record for 5 catalogued oil & gas wells, with the largest concentration in Illinois (5). Only wells in states WellCensus has ingested are counted.
How many of Group One Lsg & Dev's wells are still active?
0 of Group One Lsg & Dev's catalogued wells are active; 3 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Group One Lsg & Dev operate wells?
Group One Lsg & Dev is the operator of record for wells in Illinois (5).
Does Group One Lsg & Dev operate mostly oil or gas wells?
1 of Group One Lsg & Dev's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Group One Lsg & Dev's deepest well?
Among wells with a published depth, Tillet 1 in Schuyler, IL is the deepest at 611 ft.
Where Group One Lsg & Dev'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, “Group One Lsg & Dev — well portfolio”, https://wellcensus.com/operators/group-one-lsg-dev-67054 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).