Thomas & Hammill
Operator of record for 1 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Thomas & Hammill is the operator of record for 1 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 1 (100%) are plugged & abandoned. Its largest concentration is in California, with 1 wells (100% of its portfolio).
Wells operated
1
Active
0
Plugged
1
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 1 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Thomas & Hammill to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Thomas & Hammill operate?
Thomas & Hammill's catalogued wells are spread across 1 state: California (1). Its 1 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 Thomas & Hammill’s wells are active, plugged or orphaned?
0% of Thomas & Hammill'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 Thomas & Hammill operate?
By product class, 0 (0%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%.
Notable wells operated by Thomas & Hammill
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Lease by Thomas & Hammill 1 | 04-001-00032 | Plugged & abandoned | Other type | Alameda, CA | Thomas & Hammill | — |
Deepest first where depth is published. See all 1 wells →
Frequently asked questions
How many wells does Thomas & Hammill operate?
Thomas & Hammill is the operator of record for 1 catalogued oil & gas wells, with the largest concentration in California (1). Only wells in states WellCensus has ingested are counted.
How many of Thomas & Hammill's wells are still active?
0 of Thomas & Hammill's catalogued wells are active; 1 are plugged & abandoned.
In which states does Thomas & Hammill operate wells?
Thomas & Hammill is the operator of record for wells in California (1).
Does Thomas & Hammill operate mostly oil or gas wells?
0 of Thomas & Hammill's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Thomas & Hammill'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, “Thomas & Hammill — well portfolio”, https://wellcensus.com/operators/thomas-hammill-10107 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).