931 wells across 35 active operators, with 54 drilling permits filed in the last 24 months.
Refreshed monthly from CalGEM well-header records. Data current as of 2026-08-16.
Quick answer: The Southern California Borderlands Province formation in California has 931 wells on record across 35 active operators, with 54 drilling permits filed in the last 24 months (as of 2026-08-16). Its most active operators by well count are Tidelands Oil Production Company, California Resources Production, Beta Operating Company, Thums Long Beach Company and Dcor. Compiled from California Geologic Energy Management Division (CalGEM) well-header records, refreshed monthly.
The operators with the most well counts targeting the Southern California Borderlands Province formation in California:
| # | Operator | Wells in Southern California Borderlands Province |
|---|---|---|
| 1 | Tidelands Oil Production Company | 285 |
| 2 | California Resources Production | 230 |
| 3 | Beta Operating Company | 138 |
| 4 | Thums Long Beach Company | 133 |
| 5 | Dcor | 37 |
| 6 | Chevron | 16 |
| 7 | City Of Newport Beach | 16 |
| 8 | Union Pacific Resources Company | 10 |
| 9 | Exxon Mobil | 9 |
| 10 | Armstrong Petroleum | 7 |
The California counties with the most Southern California Borderlands Province activity:
Los Angeles, Orange, Santa Catalina Area, Los Angeles Offshore, Orange Offshore
The most recent 65 drilling permits filed for Southern California Borderlands Province wells in California:
| Permit Date | Well | API | County | Operator | Lateral (ft) |
|---|---|---|---|---|---|
| 2026-08-10 | State Prc 392 Cj-196a | 04059028030000 |
Orange | California Resources Production | — |
| 2026-08-03 | State Prc 392 J-180 | 04059029650000 |
Orange | California Resources Production | — |
| 2026-08-03 | State Prc 392 J-33a | 04059028190000 |
Orange | California Resources Production | — |
| 2026-05-18 | State Prc 392 S-160 | 04059031350000 |
Orange | California Resources Production | — |
| 2026-05-18 | State Prc 392 S-160 | 04059031350000 |
Orange | California Resources | — |
| 2026-05-14 | State Prc 392 T-11 | 04059028750000 |
Orange | California Resources | — |
| 2026-05-14 | State Prc 392 T-11 | 04059028750000 |
Orange | California Resources Production | — |
| 2026-05-12 | State Prc 392 Uj-32a | 04059028180000 |
Orange | California Resources | — |
| 2026-05-12 | State Prc 392 Uj-32a | 04059028180000 |
Orange | California Resources Production | — |
| 2026-05-08 | State Prc 392 J-71c | 04059002080000 |
Orange | California Resources Production | — |
| 2026-05-08 | State Prc 392 J-71c | 04059002080000 |
Orange | California Resources | — |
| 2026-05-07 | State Prc 392 Uj-73b | 04059009300000 |
Orange | California Resources | — |
| 2026-05-07 | State Prc 392 Uj-73b | 04059009300000 |
Orange | California Resources Production | — |
| 2026-05-05 | Lease By Tidelands Oil Production CO. X 68 | 04037027210000 |
Los Angeles | Tidelands Oil Production Company | — |
| 2026-05-01 | State Prc 392 S-43a | 04059029560000 |
Orange | California Resources | — |
| 2026-05-01 | State Prc 392 S-43a | 04059029560000 |
Orange | California Resources Production | — |
| 2026-02-10 | State Prc 392 J-140a | 04059029050000 |
Orange | California Resources Production | — |
| 2026-02-10 | State Prc 392 J-140a | 04059029050000 |
Orange | California Resources | — |
| 2025-11-18 | Unspecified 3 | 04059217870000 |
Orange | Louis F Dekay Son | — |
| 2025-10-17 | State Prc 392 S-34a | 04059029430000 |
Orange | California Resources Production | 1,019 |
| 2025-10-17 | State Prc 392 S-34a | 04059029430000 |
Orange | California Resources | 1,019 |
| 2025-10-16 | State Prc 392 Uj-34c | 04059028200000 |
Orange | California Resources Production | — |
| 2025-10-16 | State Prc 392 Uj-34c | 04059028200000 |
Orange | California Resources | — |
| 2025-09-12 | Lease By Tidelands Oil Production CO. Z 227 | 04037030780000 |
Los Angeles | Tidelands Oil Production Company | 313 |
| 2025-08-25 | State Prc 392 J-173 | 04059029440000 |
Orange | California Resources | — |
| 2025-08-25 | State Prc 392 J-173 | 04059029440000 |
Orange | California Resources Production | — |
| 2025-08-19 | State Prc 392 Cj-78 | 04059028700000 |
Orange | California Resources Production | — |
| 2025-08-19 | State Prc 392 Cj-78 | 04059028700000 |
Orange | California Resources | — |
| 2025-08-07 | Newport Beach 3 | 04059051840000 |
Orange | City Of Newport Beach | 408 |
| 2025-07-15 | State Prc 392 J-68b | 04059028450000 |
Orange | California Resources Production | — |
| 2025-07-15 | State Prc 392 S-42b | 04059029500000 |
Orange | California Resources | — |
| 2025-07-15 | State Prc 392 J-68b | 04059028450000 |
Orange | California Resources | — |
| 2025-07-15 | State Prc 392 S-42b | 04059029500000 |
Orange | California Resources Production | — |
| 2025-06-20 | Lease By Thums Long Beach CO. J-331 | 04037010250000 |
Los Angeles | Thums Long Beach Company | 2,138 |
| 2025-04-23 | Lease By Thums Long Beach CO. J-322 | 04037010200000 |
Los Angeles | Thums Long Beach Company | 1,149 |
| 2025-04-22 | State Prc 392 J-80b | 04059001090000 |
Orange | California Resources Production | — |
| 2025-04-22 | State Prc 392 J-80b | 04059001090000 |
Orange | California Resources | — |
| 2025-04-22 | State Prc 392 Uj-176 | 04059031240000 |
Orange | California Resources Production | 509 |
| 2025-04-22 | State Prc 392 Uj-176 | 04059031240000 |
Orange | California Resources | 509 |
| 2025-04-18 | State Prc 392 Cj-179 | 04059030490000 |
Orange | California Resources | 2,763 |
| 2025-04-18 | State Prc 392 Cj-179 | 04059030490000 |
Orange | California Resources Production | 2,763 |
| 2025-04-17 | State Prc 392 S-3b | 04059029170000 |
Orange | California Resources | — |
| 2025-04-17 | State Prc 392 S-3b | 04059029170000 |
Orange | California Resources Production | — |
| 2025-04-16 | State Prc 392 Uj-98c | 04059028680000 |
Orange | California Resources | — |
| 2025-04-16 | State Prc 392 Uj-98c | 04059028680000 |
Orange | California Resources Production | — |
| 2025-03-14 | State Prc 392 S-135b | 04059030480000 |
Orange | California Resources Production | — |
| 2025-03-14 | State Prc 426 4112 | 04059032360000 |
Orange | California Resources | 4,334 |
| 2025-03-14 | State Prc 426 4147 | 04059032710000 |
Orange | California Resources | — |
| 2025-03-14 | State Prc 426 4145 | 04059032690000 |
Orange | California Resources | — |
| 2025-03-14 | State Prc 426 4112 | 04059032360000 |
Orange | California Resources Production | 4,334 |
The Southern California Borderlands Province is one of California's active oil and gas plays, with 931 wells on file across 35 distinct operators of record. Operators have filed 54 drilling permits targeting the Southern California Borderlands Province in the last 24 months — a measure of how active the play is right now versus its historical baseline.
For mineral owners with interests in Los Angeles, Orange, Santa Catalina Area, Los Angeles Offshore, Orange Offshore, knowing whether your tract sits within an active Southern California Borderlands Province footprint is a foundational valuation question. Active formations with consistent permit flow command premium pricing; legacy formations with steady but declining production are valued differently.
See all California oil & gas formations & plays · Download the California formations dataset (CSV)
931 wells target the Southern California Borderlands Province in California, worked by 35 active operators, per CalGEM well-header records (as of 2026-08-16).
By well count, the most active Southern California Borderlands Province operators in California are Tidelands Oil Production Company, California Resources Production, Beta Operating Company, Thums Long Beach Company and Dcor. The full ranking is in the table on this page.
Operators filed 54 drilling permits targeting the Southern California Borderlands Province in the last 24 months — a live measure of current activity, per CalGEM records.
Operators filed 54 new drilling permits targeting the Southern California Borderlands Province in California over the last 24 months. New permits and spuds are the clearest signal of active Southern California Borderlands Province drilling, per CalGEM records (as of 2026-08-16).
Southern California Borderlands Province activity in California currently spans 931 wells on record and 35 active operators, led by Tidelands Oil Production Company, California Resources Production, Beta Operating Company, Thums Long Beach Company and Dcor, with 54 drilling permits filed in the last 24 months — refreshed monthly from California Geologic Energy Management Division (CalGEM) well-header records (as of 2026-08-16).
The most active Southern California Borderlands Province counties in California are Los Angeles, Orange, Santa Catalina Area, Los Angeles Offshore, Orange Offshore.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. Buckhead Energy checks your tract against current Southern California Borderlands Province well and permit data and puts a free, no-obligation written offer in writing — this page is informational only, not a valuation.
Cite this dataset
Permanently archived and citable via a DOI on Zenodo (CERN), under a CC BY 4.0 license. DOI: 10.5281/zenodo.21442884 · View on Zenodo
License & attribution: This data is licensed CC BY 4.0. You are free to share and adapt it, including commercially, provided you credit “Buckhead Energy” and link back to this page or the DOI above.
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Formation: Southern California Borderlands Province
State: California
Total wells: 931
Active operators: 35
Permits 24mo: 54
Last refresh: 2026-08-16
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