Pfeffer William J
Operator of record for 34 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Pfeffer William J is the operator of record for 34 catalogued U.S. oil & gas wells in 1 state. 6 (18%) are active, 25 (74%) plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Illinois, with 34 wells (100% of its portfolio).
Wells operated
34
Active
6
Plugged
25
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 34 |
Well mix
- Oil wells
- 9
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 18%
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Claim your operator profileWhere does Pfeffer William J operate?
Pfeffer William J's catalogued wells are spread across 1 state: Illinois (34). Its 34 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 Pfeffer William J’s wells are active, plugged or orphaned?
18% of Pfeffer William J's catalogued wells are active, 11 percentage points below the national share of 29%. 74% 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 Pfeffer William J operate?
By product class, 9 (26%) 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 Murray-Birge Community 1 in Marion, IL at 2,246 ft.
Notable wells operated by Pfeffer William J
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Murray-Birge Community 1 | 12-121-02989 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 2,246 ft |
| Dobbs-Clem Community 2 | 12-121-01639 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 2,156 ft |
| Conley, Joel P. 2 | 12-121-01782 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 2,144 ft |
| Meyers-Summerville 2 | 12-121-02026 | Plugged & abandoned | Oil | Marion, IL | Pfeffer, William J. | 2,130 ft |
| Conley, Joel 1 | 12-121-01599 | Active | Oil | Marion, IL | Pfeffer, William J. | 2,117 ft |
| Meyer-Summerville Comm. 1 | 12-121-01935 | Plugged & abandoned | Injection | Marion, IL | Pfeffer, William J. | 1,928 ft |
| Lippert Fred 4 | 12-121-02078 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 1,697 ft |
| Carrigan 1 | 12-121-01785 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 1,686 ft |
| Lippert Fred 2 | 12-121-02069 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 1,572 ft |
| Briscoe 1 | 12-121-05108 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 1,557 ft |
| Lippert 5 | 12-121-05230 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 1,545 ft |
| Schaubert 2 | 12-121-05039 | Plugged & abandoned | Other type | Marion, IL | Pfeffer, William J. | 1,540 ft |
Deepest first where depth is published. See all 34 wells →
Frequently asked questions
How many wells does Pfeffer William J operate?
Pfeffer William J is the operator of record for 34 catalogued oil & gas wells, with the largest concentration in Illinois (34). Only wells in states WellCensus has ingested are counted.
How many of Pfeffer William J's wells are still active?
6 of Pfeffer William J's catalogued wells are active; 25 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Pfeffer William J operate wells?
Pfeffer William J is the operator of record for wells in Illinois (34).
Does Pfeffer William J operate mostly oil or gas wells?
9 of Pfeffer William J's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Pfeffer William J's deepest well?
Among wells with a published depth, Murray-Birge Community 1 in Marion, IL is the deepest at 2,246 ft.
Where Pfeffer William J'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, “Pfeffer William J — well portfolio”, https://wellcensus.com/operators/pfeffer-william-j-66949 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).