Helm Co & Robert Sumpf
Operator of record for 3 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Helm Co & Robert Sumpf is the operator of record for 3 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 3 (100%) are plugged & abandoned. Its largest concentration is in California, with 3 wells (100% of its portfolio).
Wells operated
3
Active
0
Plugged
3
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 3 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim Helm Co & Robert Sumpf to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Helm Co & Robert Sumpf operate?
Helm Co & Robert Sumpf's catalogued wells are spread across 1 state: California (3). Its 3 California wells are 0.0% of the 242,471 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 Helm Co & Robert Sumpf’s wells are active, plugged or orphaned?
0% of Helm Co & Robert Sumpf'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 Helm Co & Robert Sumpf operate?
By product class, 0 (0%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in Contra Costa (CA) and Kings (CA).
Notable wells operated by Helm Co & Robert Sumpf
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Sproule 1 | 04-013-00231 | Plugged & abandoned | Other type | Contra Costa, CA | Helm Co. & Robert Sumpf | — |
| S.F. & F.L. 36 | 04-031-00813 | Plugged & abandoned | Other type | Kings, CA | Helm Co. & Robert Sumpf | — |
| Dal Porto-Shell 1 | 04-013-00170 | Plugged & abandoned | Other type | Contra Costa, CA | Helm Co. & Robert Sumpf | — |
Deepest first where depth is published. See all 3 wells →
Frequently asked questions
How many wells does Helm Co & Robert Sumpf operate?
Helm Co & Robert Sumpf is the operator of record for 3 catalogued oil & gas wells, with the largest concentration in California (3). Only wells in states WellCensus has ingested are counted.
How many of Helm Co & Robert Sumpf's wells are still active?
0 of Helm Co & Robert Sumpf's catalogued wells are active; 3 are plugged & abandoned.
In which states does Helm Co & Robert Sumpf operate wells?
Helm Co & Robert Sumpf is the operator of record for wells in California (3).
Does Helm Co & Robert Sumpf operate mostly oil or gas wells?
0 of Helm Co & Robert Sumpf's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Helm Co & Robert Sumpf'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, “Helm Co & Robert Sumpf — well portfolio”, https://wellcensus.com/operators/helm-co-robert-sumpf-10538 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).