Plains Ex
Operator of record for 266 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Plains Ex is the operator of record for 266 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 262 (98%) are plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Colorado, with 266 wells (100% of its portfolio).
Wells operated
266
Active
0
Plugged
262
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 266 |
Well mix
- Oil wells
- 20
- Gas wells
- 2
- Shut-in
- 0
- Active share
- 0%
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Claim Plains Ex to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Plains Ex operate?
Plains Ex's catalogued wells are spread across 1 state: Colorado (266). Its 266 Colorado wells are 0.2% 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 Plains Ex’s wells are active, plugged or orphaned?
0% of Plains Ex's catalogued wells are active, 29 percentage points below the national share of 29%. 98% 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 Plains Ex operate?
By product class, 20 (8%) are oil wells and 2 (0.8%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is 1 Uprr-Eichheim in Weld, CO at 9,451 ft. The wells listed below sit in Weld (CO), Adams (CO) and Lincoln (CO).
Notable wells operated by Plains Ex
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 1 Uprr-Eichheim | 05-123-05635 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 9,451 ft |
| 1 R B Smoot | 05-123-05574 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 9,429 ft |
| 1 Von Trotha Bros Inc | 05-123-05203 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 8,900 ft |
| 1 Johnston | 05-123-05733 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 7,439 ft |
| 1 Carlson | 05-123-05665 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 7,300 ft |
| 1 Smithberger | 05-123-05756 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 7,070 ft |
| 1 Andrew Kelly | 05-123-05335 | Plugged & abandoned | Other type | Weld, CO | Plains Ex | 7,058 ft |
| 1 Porter | 05-001-05347 | Plugged & abandoned | Other type | Adams, CO | Plains Ex | 6,618 ft |
| 1 Grant | 05-001-05407 | Plugged & abandoned | Other type | Adams, CO | Plains Ex | 6,610 ft |
| 1 State D | 05-001-05344 | Plugged & abandoned | Other type | Adams, CO | Plains Ex | 6,552 ft |
| 1 Bonny B Ross | 05-073-05111 | Plugged & abandoned | Other type | Lincoln, CO | Plains Ex | 6,500 ft |
| 1 Allis | 05-001-06029 | Plugged & abandoned | Other type | Adams, CO | Plains Ex | 6,483 ft |
Deepest first where depth is published. See all 266 wells →
Frequently asked questions
How many wells does Plains Ex operate?
Plains Ex is the operator of record for 266 catalogued oil & gas wells, with the largest concentration in Colorado (266). Only wells in states WellCensus has ingested are counted.
How many of Plains Ex's wells are still active?
0 of Plains Ex's catalogued wells are active; 262 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Plains Ex operate wells?
Plains Ex is the operator of record for wells in Colorado (266).
Does Plains Ex operate mostly oil or gas wells?
20 of Plains Ex's catalogued wells are oil wells and 2 are gas wells; the rest are injection, service or unclassified wells.
What is Plains Ex's deepest well?
Among wells with a published depth, 1 Uprr-Eichheim in Weld, CO is the deepest at 9,451 ft.
Where Plains Ex'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 Ex — well portfolio”, https://wellcensus.com/operators/plains-ex-3078 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).