Oil & gas wells in Sonoma County, CA
67 catalogued wells in Sonoma County, California, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Sonoma County, California has 67 catalogued oil & gas wells: 0 active (0%), 63 plugged & abandoned (94%) and 0 documented orphans. It ranks 36th of the 39 California counties WellCensus profiles by well count and holds 0.0% of the state's 242,471 catalogued wells.
Catalogued wells
67
Active
0
Plugged
63
Documented orphans
0
What is the status of oil and gas wells in Sonoma County?
0% of Sonoma County's wells are active, 22 percentage points below the California share of 22%. 94% are plugged & abandoned, against 60% statewide and 47% nationally. No documented orphaned wells are recorded in Sonoma County; California as a whole has 2,940. The remaining 4 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Sonoma County?
By product class, 6 of the county's wells (9%) are oil wells, 9 (13%) gas wells and 0 (0%) injection wells. Statewide the oil share is 68% and the gas share 3%. 100% of the county's wells carry coordinates and appear on the map.
How does Sonoma County compare with other California counties?
Sonoma County has the 36th-most catalogued wells of the 39 California counties with at least 25. The median California county on WellCensus has 675 wells. The largest, Kern County, has 156,849.
Who operates wells in Sonoma County?
37 distinct operators of record are linked to wells in Sonoma County. 100% of the county's wells carry a link to a canonical operator profile; the rest list no operator or a name not yet resolved. Each well's page names its operator where the state publishes one.
Wells in Sonoma County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Tunzi 2 | 04-097-00001 | Plugged & abandoned | Other type | B C R & F Oil & Gas Corp. |
| Bettinelli 4 | 04-097-00002 | Other status | Oil | Drilling & Production Co. |
| Gambonini 1 | 04-097-00003 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Golden Gate 3 | 04-097-00004 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Mossi 2 | 04-097-00005 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Murphy 3 | 04-097-00006 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Petaluma Community 5 1 | 04-097-00007 | Plugged & abandoned | Other type | Petaluma Oil & Gas |
| Petaluma Community 5 2 | 04-097-00008 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Petaluma Community 5 3 | 04-097-00009 | Plugged & abandoned | Oil | Drilling & Production Co. |
| Petaluma Community 5 4 | 04-097-00010 | Plugged & abandoned | Oil | Petaluma Oil & Gas |
| Petaluma Community 5 5 | 04-097-00011 | Plugged & abandoned | Other type | Drilling & Production Co. |
| Petaluma Community 5 6 | 04-097-00012 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Petaluma Community 5 7 | 04-097-00013 | Plugged & abandoned | Other type | Drilling & Production Co. |
| Petaluma Community 5 7-A | 04-097-00014 | Plugged & abandoned | Gas | Petaluma Oil & Gas |
| Bettinelli 1 | 04-097-00015 | Plugged & abandoned | Other type | Leonard A. Gregory |
| Pinheiro 1 | 04-097-00016 | Plugged & abandoned | Other type | Inland Pacific Co. |
| Lease by O. F. W. Drilling Co., Inc. 1 | 04-097-00017 | Plugged & abandoned | Other type | O. F. W. Drilling Co., Inc. |
| Bourke 1 | 04-097-00018 | Plugged & abandoned | Other type | Petaluma Expl. Co., Ltd. |
| Bettinelli 2 | 04-097-00019 | Plugged & abandoned | Other type | V. A. Porter |
| Tunzi 1 | 04-097-00020 | Plugged & abandoned | Other type | Precision Drilling Co. |
| Lease by Sage & Olson 1 | 04-097-00021 | Plugged & abandoned | Other type | Sage & Olson |
| Lease by Sage & Olson 2 | 04-097-00022 | Plugged & abandoned | Other type | Sage & Olson |
| Doss 1 | 04-097-00023 | Plugged & abandoned | Other type | Shell Western E&P Inc. |
| Mossi 1 | 04-097-00024 | Plugged & abandoned | Other type | Shell Western E&P Inc. |
| Murphy 1 | 04-097-00025 | Plugged & abandoned | Other type | Shell Western E&P Inc. |
A sample of the county’s wells — every catalogued well has its own page. Browse all 67 in search → (filter by operator, status and type, then export), or find a specific well on the live map.
Frequently asked questions
How many oil and gas wells are in Sonoma County, CA?
Sonoma County, California has 67 catalogued oil & gas wells: 0 active, 63 plugged and 0 documented orphans.
How many orphaned wells are in Sonoma County?
No documented orphaned wells are currently recorded in Sonoma County, California.
What share of wells in Sonoma County are plugged?
63 of Sonoma County's 67 catalogued wells (94%) are plugged & abandoned, compared with 60% across California.
Which California county has the most oil and gas wells?
Kern County has the most catalogued wells of any California county on WellCensus (156,849); Sonoma County ranks 36th with 67.
How many companies operate wells in Sonoma County?
37 distinct operators of record are linked to catalogued wells in Sonoma County, California.
Nearby in the California rankings
About this data
Source: CalGEM WellSTAR well registry, plus the USGS United States Documented Orphaned Well Database (2026, doi 10.5066/P13FHBYG), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Oil & gas wells in Sonoma County, California”, https://wellcensus.com/wells/california/sonoma (data as of October 10, 2026).