Chemassist
Operator of record for 32 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Chemassist is the operator of record for 32 catalogued U.S. oil & gas wells in 1 state. 21 (66%) are active, 4 (13%) plugged & abandoned. Its largest concentration is in California, with 32 wells (100% of its portfolio).
Wells operated
32
Active
21
Plugged
4
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 32 |
Well mix
- Oil wells
- 31
- Gas wells
- 0
- Shut-in
- 7
- Active share
- 66%
Is this your company?
Claim Chemassist to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Chemassist operate?
Chemassist's catalogued wells are spread across 1 state: California (32). Its 32 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 Chemassist’s wells are active, plugged or orphaned?
66% of Chemassist's catalogued wells are active, 37 percentage points above the national share of 29%. 13% are plugged & abandoned, against 47% nationally. 7 wells (22%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Chemassist operate?
By product class, 31 (97%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%.
Notable wells operated by Chemassist
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Lynn 1 | 04-111-02603 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| A.D.P. Rehart-Hunter 3-11 | 04-111-20579 | Shut-in | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Hunter-Rehart 3-44 | 04-111-20945 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Lynn 8 | 04-111-20230 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Central 9 | 04-111-02598 | Shut-in | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Hunter-Rehart 3-11 | 04-111-20608 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Lynn 7 | 04-111-20216 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Hunter-Rogers 3-54 | 04-111-20900 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Vaqueros Grande 1 | 04-111-21915 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| Central 2 | 04-111-02592 | Plugged & abandoned | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| A.D.P. Hopper Ranch 3-43 | 04-111-20595 | Active | Oil | Ventura, CA | Chemassist, L.L.C. | — |
| A.D.P. Hunter-Rogers 3-53 | 04-111-20640 | Active | Other type | Ventura, CA | Chemassist, L.L.C. | — |
Deepest first where depth is published. See all 32 wells →
Frequently asked questions
How many wells does Chemassist operate?
Chemassist is the operator of record for 32 catalogued oil & gas wells, with the largest concentration in California (32). Only wells in states WellCensus has ingested are counted.
How many of Chemassist's wells are still active?
21 of Chemassist's catalogued wells are active; 4 are plugged & abandoned.
In which states does Chemassist operate wells?
Chemassist is the operator of record for wells in California (32).
Does Chemassist operate mostly oil or gas wells?
31 of Chemassist's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Chemassist'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, “Chemassist — well portfolio”, https://wellcensus.com/operators/chemassist-9839 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).