Cer
Operator of record for 4 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Cer is the operator of record for 4 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 4 (100%) are plugged & abandoned. Its largest concentration is in Colorado, with 4 wells (100% of its portfolio).
Wells operated
4
Active
0
Plugged
4
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 4 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Cer to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Cer operate?
Cer's catalogued wells are spread across 1 state: Colorado (4). Its 4 Colorado wells are 0.0% of the 124,327 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 Cer’s wells are active, plugged or orphaned?
0% of Cer's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Cer operate?
By product class, 0 (0%) 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 2 Rio Blanco Unit Rb-Ar in Rio Blanco, CO at 7,077 ft.
Notable wells operated by Cer
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 2 Rio Blanco Unit Rb-Ar | 05-103-07615 | Plugged & abandoned | Other type | Rio Blanco, CO | Cer Corporation | 7,077 ft |
| 4 Rio Blanco Rb-U | 05-103-07641 | Plugged & abandoned | Other type | Rio Blanco, CO | Cer Corporation | 7,025 ft |
| Rb-D-01 Government | 05-103-07378 | Plugged & abandoned | Other type | Rio Blanco, CO | Cer Corporation | 1,651 ft |
| 1 Government C 021764 Rb E | 05-103-07379 | Plugged & abandoned | Other type | Rio Blanco, CO | Cer Corporation | 0 ft |
Deepest first where depth is published. See all 4 wells →
Frequently asked questions
How many wells does Cer operate?
Cer is the operator of record for 4 catalogued oil & gas wells, with the largest concentration in Colorado (4). Only wells in states WellCensus has ingested are counted.
How many of Cer's wells are still active?
0 of Cer's catalogued wells are active; 4 are plugged & abandoned.
In which states does Cer operate wells?
Cer is the operator of record for wells in Colorado (4).
Does Cer operate mostly oil or gas wells?
0 of Cer's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Cer's deepest well?
Among wells with a published depth, 2 Rio Blanco Unit Rb-Ar in Rio Blanco, CO is the deepest at 7,077 ft.
Where Cer'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, “Cer — well portfolio”, https://wellcensus.com/operators/cer-17555 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).