Defratis & Assc
Operator of record for 13 catalogued wells across 1 state. Every well below links to its full registry page.
Filed as: Defratis & Assc · Defratis & Assc.
At a glance
Defratis & Assc is the operator of record for 13 catalogued U.S. oil & gas wells in 1 state. 1 (8%) are active, 12 (92%) plugged & abandoned. Its largest concentration is in Illinois, with 13 wells (100% of its portfolio).
Wells operated
13
Active
1
Plugged
12
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 13 |
Well mix
- Oil wells
- 1
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 8%
Is this your company?
Claim Defratis & Assc to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Defratis & Assc operate?
Defratis & Assc's catalogued wells are spread across 1 state: Illinois (13). Its 13 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 Defratis & Assc’s wells are active, plugged or orphaned?
8% of Defratis & Assc's catalogued wells are active, 21 percentage points below the national share of 29%. 92% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Defratis & Assc operate?
By product class, 1 (8%) 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 Edwards, E. 1 in Sangamon, IL at 1,925 ft. The wells listed below sit in Sangamon (IL), Macoupin (IL), Bond (IL), Montgomery (IL), Madison (IL) and Menard (IL). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Defratis & Assc
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Edwards, E. 1 | 12-167-00178 | Plugged & abandoned | Other type | Sangamon, IL | Defratis & Assc | 1,925 ft |
| Drennan, Rose 1 | 12-167-00168 | Plugged & abandoned | Other type | Sangamon, IL | Defratis & Assc | 1,877 ft |
| Baker, 1 | 12-117-00614 | Plugged & abandoned | Other type | Macoupin, IL | Defratis & Assc | 723 ft |
| File 1 | 12-005-00332 | Plugged & abandoned | Other type | Bond, IL | Defratis & Assc | 653 ft |
| File 1 | 12-005-01058 | Plugged & abandoned | Other type | Bond, IL | Defratis & Assc. | 649 ft |
| DeFratis 2 | 12-135-01447 | Plugged & abandoned | Other type | Montgomery, IL | Defratis & Assc | 638 ft |
| Albrecht, William 1 | 12-119-00920 | Plugged & abandoned | Other type | Madison, IL | Defratis & Assc | 635 ft |
| Street 1 | 12-135-01216 | Plugged & abandoned | Other type | Montgomery, IL | Defratis & Assc | 617 ft |
| Van Hooser 1 | 12-119-01047 | Plugged & abandoned | Other type | Madison, IL | Defratis & Assc | 605 ft |
| File 3 | 12-005-00331 | Active | Oil | Bond, IL | Defratis & Assc | 564 ft |
| Raikes 1 | 12-129-00061 | Plugged & abandoned | Other type | Menard, IL | Defratis & Assc | 553 ft |
| Shourd 1 | 12-119-01551 | Plugged & abandoned | Other type | Madison, IL | Defratis & Assc | 517 ft |
Deepest first where depth is published. See all 13 wells →
Frequently asked questions
How many wells does Defratis & Assc operate?
Defratis & Assc is the operator of record for 13 catalogued oil & gas wells, with the largest concentration in Illinois (13). Only wells in states WellCensus has ingested are counted.
How many of Defratis & Assc's wells are still active?
1 of Defratis & Assc's catalogued wells are active; 12 are plugged & abandoned.
In which states does Defratis & Assc operate wells?
Defratis & Assc is the operator of record for wells in Illinois (13).
Does Defratis & Assc operate mostly oil or gas wells?
1 of Defratis & Assc's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Defratis & Assc's deepest well?
Among wells with a published depth, Edwards, E. 1 in Sangamon, IL is the deepest at 1,925 ft.
Where Defratis & Assc'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, “Defratis & Assc — well portfolio”, https://wellcensus.com/operators/defratis-assc-91202 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).