Oil & gas wells in Alameda County, CA
100 catalogued wells in Alameda County, California, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Alameda County, California has 100 catalogued oil & gas wells: 0 active (0%), 92 plugged & abandoned (92%) and 1 documented orphans. It ranks 35th of the 39 California counties WellCensus profiles by well count and holds 0.0% of the state's 242,471 catalogued wells.
Catalogued wells
100
Active
0
Plugged
92
Documented orphans
1
What is the status of oil and gas wells in Alameda County?
0% of Alameda County's wells are active, 22 percentage points below the California share of 22%. 92% are plugged & abandoned, against 60% statewide and 47% nationally. 1 wells (1%) are documented orphans with no operator able to plug them, compared with 1% across California and 4% nationally. The remaining 7 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Alameda County?
By product class, 23 of the county's wells (23%) are oil wells, 2 (2%) gas wells and 2 (2%) 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 Alameda County compare with other California counties?
Alameda County has the 35th-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. By documented orphans it ranks 33rd in California.
Who operates wells in Alameda County?
47 distinct operators of record are linked to wells in Alameda 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 Alameda County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Greenville Investment Group 1 | 04-001-00001 | Plugged & abandoned | Oil | E & B Natural Resources Management Corporation |
| Hancock-Signal (NCT-1) Wente 1 | 04-001-00002 | Plugged & abandoned | Gas | Chevron U.S.A. Inc. |
| Hancock-Signal (NCT-1) Wente 2 | 04-001-00003 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Lease by Atlantic & Western Oil Co. 1 | 04-001-00004 | Plugged & abandoned | Other type | Atlantic & Western Oil Co. |
| Buttes Freitas 1 | 04-001-00005 | Plugged & abandoned | Other type | Venoco, LLC |
| Wiedemann and Kaplan 1 | 04-001-00006 | Plugged & abandoned | Other type | Wesley West |
| Lease by Brady Sure Shot Oil Co. 1 | 04-001-00007 | Orphaned | Other type | Brady Sure Shot Oil Co. |
| Lavagetto 1 | 04-001-00009 | Plugged & abandoned | Other type | Frederick Libby |
| Lease by Hayward Oil Co., Ltd. 1 | 04-001-00010 | Plugged & abandoned | Other type | Hayward Oil Co., Ltd. |
| Lease by R. Y. Hanlon 1 | 04-001-00011 | Plugged & abandoned | Other type | R. Y. Hanlon |
| Dyer 1 | 04-001-00012 | Plugged & abandoned | Other type | Michigan Oil Company |
| Maud Stanley 1 | 04-001-00013 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Signal-Hancock Gordon 1 | 04-001-00014 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Signal-Hancock Garaventa (NCT- 1 | 04-001-00015 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Signal-Hancock Christensen 1 | 04-001-00016 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Nissen 1 | 04-001-00017 | Plugged & abandoned | Other type | Shell Western E&P Inc. |
| Castello 1-13 | 04-001-00018 | Plugged & abandoned | Other type | Mobil Oil Exploration & Production North America, Inc. |
| Gomes 1 | 04-001-00019 | Plugged & abandoned | Other type | Brazos Oil and Gas Company |
| Lease by J. E. Burney Syndicate No. 1 1 | 04-001-00020 | Plugged & abandoned | Other type | J. E. Burney Syndicate No. 1 |
| Foley 1 | 04-001-00021 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Lease by Ducor Petroleum Company 1 | 04-001-00022 | Plugged & abandoned | Other type | Ducor Petroleum Company |
| Livermore Valley Oil Co. 1A | 04-001-00023 | Plugged & abandoned | Other type | Calhoma Oil Corp. |
| W.G. Wagoner 1 | 04-001-00024 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Lease by A. M. Gilstrap 1 | 04-001-00025 | Plugged & abandoned | Other type | A. M. Gilstrap |
| Lease by W. M. S. Oil Co. 1 | 04-001-00026 | Plugged & abandoned | Other type | W. M. S. Oil Co. |
A sample of the county’s wells — every catalogued well has its own page. Browse all 100 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 Alameda County, CA?
Alameda County, California has 100 catalogued oil & gas wells: 0 active, 92 plugged and 1 documented orphans.
How many orphaned wells are in Alameda County?
1 wells in Alameda County, California are documented orphans — unplugged with no solvent operator of record, the 33rd-highest count among California counties.
What share of wells in Alameda County are plugged?
92 of Alameda County's 100 catalogued wells (92%) 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); Alameda County ranks 35th with 100.
How many companies operate wells in Alameda County?
47 distinct operators of record are linked to catalogued wells in Alameda 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 Alameda County, California”, https://wellcensus.com/wells/california/alameda (data as of October 10, 2026).