Plains Illinois
Operator of record for 307 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Plains Illinois is the operator of record for 307 catalogued U.S. oil & gas wells in 1 state. 230 (75%) are active, 43 (14%) plugged & abandoned. Its largest concentration is in Illinois, with 307 wells (100% of its portfolio).
Wells operated
307
Active
230
Plugged
43
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 307 |
Well mix
- Oil wells
- 240
- Gas wells
- 1
- Shut-in
- 1
- Active share
- 75%
Is this your company?
Claim Plains Illinois to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Plains Illinois operate?
Plains Illinois's catalogued wells are spread across 1 state: Illinois (307). Its 307 Illinois wells are 0.2% 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 Plains Illinois’s wells are active, plugged or orphaned?
75% of Plains Illinois's catalogued wells are active, 46 percentage points above the national share of 29%. 14% are plugged & abandoned, against 47% nationally. 1 wells (0.3%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Plains Illinois operate?
By product class, 240 (78%) are oil wells and 1 (0.3%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Lewis, J. B. SWDW-2 in Lawrence, IL at 6,356 ft. The wells listed below sit in Lawrence (IL), Clay (IL) and Fayette (IL).
Notable wells operated by Plains Illinois
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Lewis, J. B. SWDW-2 | 12-101-30867 | Active | Injection | Lawrence, IL | Plains Illinois, Inc. | 6,356 ft |
| West Kenner WI-3 | 12-025-01485 | Active | Injection | Clay, IL | Plains Illinois, Inc. | 4,745 ft |
| West Kenner Unit 37 | 12-025-28457 | Active | Oil | Clay, IL | Plains Illinois, Inc. | 4,665 ft |
| Swarm, Jeremiah J-18 | 12-051-27512 | Active | Injection | Fayette, IL | Plains Illinois, Inc. | 4,498 ft |
| Smail, Wm. 25 | 12-051-27511 | Other status | Oil | Fayette, IL | Plains Illinois, Inc. | 4,452 ft |
| Williams, C. T. 20 | 12-051-27513 | Active | Oil | Fayette, IL | Plains Illinois, Inc. | 4,450 ft |
| Mitchell Trust 1 | 12-025-28505 | Plugged & abandoned | Other type | Clay, IL | Plains Illinois, Inc. | 4,300 ft |
| West Kenner Unit 39 | 12-025-28476 | Active | Oil | Clay, IL | Plains Illinois, Inc. | 3,650 ft |
| Jenner, Laura a/c 1 27 | 12-101-31035 | Other status | Oil | Lawrence, IL | Plains Illinois, Inc. | 3,600 ft |
| Schwarm, S. W. & A. E. 16 | 12-051-27517 | Active | Oil | Fayette, IL | Plains Illinois, Inc. | 3,490 ft |
| Schwarm, S. W. & A. E. 18 | 12-051-27613 | Active | Oil | Fayette, IL | Plains Illinois, Inc. | 3,490 ft |
| Schwarm, S. W. & A. E. 19 | 12-051-27607 | Plugged & abandoned | Other type | Fayette, IL | Plains Illinois, Inc. | 3,487 ft |
Deepest first where depth is published. See all 307 wells →
Frequently asked questions
How many wells does Plains Illinois operate?
Plains Illinois is the operator of record for 307 catalogued oil & gas wells, with the largest concentration in Illinois (307). Only wells in states WellCensus has ingested are counted.
How many of Plains Illinois's wells are still active?
230 of Plains Illinois's catalogued wells are active; 43 are plugged & abandoned.
In which states does Plains Illinois operate wells?
Plains Illinois is the operator of record for wells in Illinois (307).
Does Plains Illinois operate mostly oil or gas wells?
240 of Plains Illinois's catalogued wells are oil wells and 1 are gas wells; the rest are injection, service or unclassified wells.
What is Plains Illinois's deepest well?
Among wells with a published depth, Lewis, J. B. SWDW-2 in Lawrence, IL is the deepest at 6,356 ft.
Where Plains Illinois'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, “Plains Illinois — well portfolio”, https://wellcensus.com/operators/plains-illinois-66587 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).