California
California produced 105.4 MMbbl of oil and 112.4 Bcf of natural gas in 2025. 42,443 producing wells tracked, 12 months to Apr 2026.
- Eighth-largest oil-producing state among the US regions we publish, 2025.
- 2.1% of the oil produced in the United States, 2025.
- Oil production fell 7% in 2025 from 2024.
Production
All from what the source published. All held at well grain.
How the volume breaks down
- 98.0% Reported by the official source by well
- 2.0% Published by the official source as its own estimate rather than an operator-attested figure
Every barrel through February 2026 starts from what the official source published for those months. Measured over January 1970 to February 2026.
- filling in (est. · missed) . Hatching marks our estimate of the volume still to be filed. That estimate draws on our own production forecast. A check on the forecast behind this estimate measured a miss. It updates as filings arrive
- estimated . Hatching marks our estimate. In the most recent months that is volume still to be filed. Past the divider it is our estimate of each whole month, built on any filings already in. Beyond the last filings it is our forecast.
In this view, hatching marks our estimate, and in the most recent months that is volume still to be filed. Past the divider, the chart continues only the bands it has drawn. Each band continues as our estimate, from any filings already in and then from our forecast, built by summing our per-well forecasts. The method behind each well is recorded with the forecast. The forward months cover existing wells only. How our methods work
All from what the source published. All held at well grain.
How the volume breaks down
- 99.13% Reported by the official source by well
- 0.87% Published by the official source as its own estimate rather than an operator-attested figure
Every cubic foot through February 2026 starts from what the official source published for those months. Measured over January 1970 to February 2026.
The bands group wells by when they first produced.
About this chart
The stack shows what is holding today's rate up and how much of it is new drilling. In the reported months the bands draw the filings already in. The months still filling in are marked.
Annual table (full history)
best estimate incl. source-estimated
| Year | Oil (MMbbl) | Gas produced (Bcf) |
|---|---|---|
| 2025 | 105.4 | 112 |
| 2024 | 113.5 | 120 |
| 2023 | 123.1 | 130 |
| 2022 | 128.2 | 134 |
| 2021 | 136.8 | 139 |
| 2020 | 147.4 | 153 |
| 2019 | 161.3 | 170 |
| 2018 | 168.6 | 182 |
| 2017 | 173.9 | 186 |
| 2016 | 186.6 | 202 |
| 2015 | 201.9 | 223 |
| 2014 | 205.5 | 227 |
| 2013 | 199.7 | 233 |
| 2012 | 197.6 | 249 |
| 2011 | 196.6 | 262 |
| 2010 | 200.9 | 279 |
| 2009 | 207.4 | 265 |
| 2008 | 214.7 | 285 |
| 2007 | 218.6 | 298 |
| 2006 | 223.1 | 314 |
| 2005 | 230.3 | 305 |
| 2004 | 240.3 | 298 |
| 2003 | 248.5 | 317 |
| 2002 | 257.4 | 336 |
| 2001 | 260.7 | 352 |
| 2000 | 271.3 | 350 |
| 1999 | 273.5 | 350 |
| 1998 | 284.6 | 330 |
| 1997 | 285.4 | 336 |
| 1996 | 283.1 | 346 |
| 1995 | 278.8 | 337 |
| 1994 | 285.2 | 348 |
| 1993 | 292.6 | 362 |
| 1992 | 305.5 | 389 |
| 1991 | 319.4 | 413 |
| 1990 | 321.1 | 401 |
| 1989 | 331.0 | 420 |
| 1988 | 355.6 | 456 |
| 1987 | 366.1 | 478 |
| 1986 | 378.4 | 502 |
| 1985 | 394.7 | 534 |
| 1984 | 381.8 | 531 |
| 1983 | 371.1 | 499 |
| 1982 | 372.4 | 472 |
| 1981 | 363.5 | 484 |
| 1980 | 340.1 | 417 |
| 1979 | 333.4 | 430 |
| 1978 | 328.6 | 393 |
| 1977 | 311.7 | 364 |
| 1976 | 2.9 | <1 |
| 1975 | 2.7 | <1 |
| 1974 | 2.3 | <1 |
| 1973 | 2.1 | <1 |
| 1972 | 1.4 | <1 |
| 1971 | 1.0 | <1 |
| 1970 | 0.2 | <1 |
Source: CommoVision (commovision.com)
Monthly table (last 24 months)
| Month | Oil (Mbbl) | Gas produced (MMcf) |
|---|---|---|
| 2026-04 | 7,225.0 | 8,427 |
| 2026-03 | 7,737.0 | 8,831 |
| 2026-02 | 6,895.5 | 8,021 |
| 2026-01 | 7,214.8 | 8,769 |
| 2025-12 | 8,618.7 | 9,219 |
| 2025-11 | 8,322.5 | 9,076 |
| 2025-10 | 8,743.3 | 9,383 |
| 2025-09 | 8,619.4 | 9,173 |
| 2025-08 | 8,879.3 | 9,640 |
| 2025-07 | 8,941.6 | 9,596 |
| 2025-06 | 8,708.0 | 9,339 |
| 2025-05 | 9,024.4 | 9,612 |
| 2025-04 | 8,843.3 | 9,366 |
| 2025-03 | 9,080.5 | 9,503 |
| 2025-02 | 8,345.2 | 8,903 |
| 2025-01 | 9,225.7 | 9,548 |
| 2024-12 | 9,345.4 | 9,587 |
| 2024-11 | 9,136.2 | 9,671 |
| 2024-10 | 9,068.4 | 9,782 |
| 2024-09 | 9,218.0 | 9,684 |
| 2024-08 | 9,516.1 | 10,113 |
| 2024-07 | 9,580.2 | 10,288 |
| 2024-06 | 9,333.3 | 10,025 |
| 2024-05 | 9,746.6 | 10,314 |
Source: CommoVision (commovision.com)
Source: CommoVision · California, data through August 2026.
Well map
- Oil 181,894
- Natural gas 11,551
- Undetermined 49,073
About this map
Undetermined means not enough signal to settle it. Producing wells are the ones that reported oil or gas in the 12 months to Apr 2026.
Type curves
best estimate incl. source-estimated
Average production per well, for wells grouped by when they first produced.
How these curves are built
Average daily production per well, for wells grouped by when they first produced. Includes every well of the cohort that is old enough at each month. Wells that are shut in or have stopped producing count as zero, so the average reflects the full cohort, not just survivors. Rates are calendar-day (volume ÷ days in month). The cumulative axis accumulates those same monthly averages at the average month length. Months not yet fully reported are excluded. The 2010-2014 curve draws those years as one group. The chart opens on average daily rate against months on production, the rate on a log scale. The view control switches to rate against cumulative production per well, on the same log rate scale, or to cumulative production per well against months on production, on a linear scale. Every view draws the same cohorts from the same production history. Each cohort is solid through the last month all of its wells sit inside fully reported data. Past it the dashed curve carries the same wells forward, on our forecast where a well’s own record ends, for up to five years. A dashed curve runs as far as at least nine in ten of its wells are accounted for. A well that is old enough but shut in still counts, as zero. The measured months are what these wells reported. In the forward months each well counts its own reported figure for each month it has one, our forecast for each month it has only that, and zero for the rest. The forward average counts every well of the cohort. The drawn forecast runs up to five years past the measured months. Line thickness tracks the size of each cohort.
Cohort summary table
| First produced | Wells | Peak oil (bbl/d per well) | Month-12 oil (bbl/d per well) | Cum oil in series (Mbbl per well) | Peak gas (Mcf/d per well) | Month-12 gas (Mcf/d per well) | Cum gas in series (Bcf per well) | Months in series | Wells old enough at last month in series | Forecast months drawn |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 17 | 9.6 | — | 0.3 | 4.5 | — | 0.0 | 1 | 100% | 60 |
| 2025 | 107 | 23 | — | 2.9 | 29.9 | — | 0.0 | 5 | 100% | 60 |
| 2024 | 84 | 25.7 | 22.1 | 11.1 | 22.2 | 14.1 | 0.0 | 17 | 100% | 60 |
| 2023 | 244 | 19.5 | 18.3 | 15.5 | 6.9 | 5.2 | 0.0 | 29 | 100% | 60 |
| 2022 | 373 | 21.5 | 15.4 | 19.4 | 32.8 | 29.8 | 0.0 | 41 | 100% | 60 |
| 2021 | 634 | 29.2 | 20.7 | 29.0 | 3.9 | 3.4 | 0.0 | 53 | 100% | 60 |
| 2020 | 963 | 26 | 21.5 | 37.1 | 9.7 | 7.5 | 0.0 | 65 | 100% | 60 |
| 2019 | 1,473 | 28.3 | 20.8 | 36.8 | 15 | 12.9 | 0.0 | 77 | 100% | 60 |
| 2018 | 1,261 | 22.8 | 19.2 | 36.3 | 12.5 | 6.9 | 0.0 | 89 | 100% | 60 |
| 2017 | 859 | 29.6 | 24.5 | 50.9 | 17.5 | 9.8 | 0.0 | 101 | 100% | 60 |
| 2016 | 828 | 31.7 | 24.8 | 49.2 | 19.6 | 5.5 | 0.0 | 113 | 100% | 60 |
| 2015 | 1,953 | 29.1 | 21.9 | 50.0 | 8 | 4.6 | 0.0 | 125 | 100% | 60 |
| 2010-2014 | 12,575 | 30.3 | 22.1 | 49.9 | 43.1 | 27.3 | 0.1 | 137 | 100% | 60 |
Source: CommoVision (commovision.com)
Source: CommoVision · California type curves, per-well production by first-production cohort.
Top operators in California, 2025 best estimate incl. source-estimated
Top operators in California, 2025: full table
| Operator | Oil (Mbbl/d, 2025) | Gas produced (MMcf/d, 2025) | Share of output |
|---|---|---|---|
| California Resources Corporation | 100.4 | 247.2 | 37.8% |
| Chevron | 84.6 | 10.8 | 27.6% |
| Sentinel Peak Resources California | 23.5 | 11.7 | 7.9% |
| Berry Petroleum | 18.1 | 1.3 | 5.9% |
| THUMS Long Beach Company | 12.0 | 5.4 | 4.0% |
| E & B Natural Resources Management Corporation | 6.6 | 2.9 | 2.2% |
| Tidelands Oil Production Company | 5.5 | 1.5 | 1.8% |
| Crimson Resource Management Corporation | 5.0 | 0.7 | 1.6% |
| Calnrg Operating, LLC | 3.8 | 4.1 | 1.3% |
| Signal Hill Petroleum | 2.8 | 1.5 | 0.9% |
| 224 other operators | 26.4 | 20.9 | 9.0% |
Mbbl/d = thousand barrels per day · MMcf/d = million cubic feet per day (units).
Source: CommoVision (commovision.com)
Top counties by 2025 production best estimate incl. source-estimated
| County | Oil (MMbbl) | Gas produced (Bcf) | Share of 2025 output |
|---|---|---|---|
| Kern County, California | 77 | 91.1 | 74.3% |
| Los Angeles County, California | 11.6 | 5.8 | 10.1% |
| Ventura County, California | 4.4 | 4.8 | 4.2% |
| Fresno County, California | 4.3 | 0.6 | 3.5% |
| Monterey County, California | 3 | 0.5 | 2.5% |
Share of output counts oil and gas together, gas at its market-value weight.
Recent permitting
About this chart
Approvals of every permit type per month, the 24 months to Sep 2026. The last bar is Sep 2026 through September 14, 2026 (100 so far), drawn hatched. Of the 4,266 approved in the 365 days to September 14, 2026, 2,969 are permits to plug wells, 725 are recompletion permits, 435 are permits to drill a new well and 137 are permits to deepen, sidetrack or re-enter existing wells. Permits to drill a new well: 435 in the 365 days to September 14, 2026 and 83 in the last 90 days of that window. How permits are counted.
Most permits 365 days to September 14, 2026
- In California, 4,266 well permits were approved in the 365 days to September 14, 2026. Of those, 1,013 came in the last 90 days of that window. The latest approval on record is dated September 14, 2026.
- Of the 4,266 approved in the 365 days to September 14, 2026, 2,969 are permits to plug wells, 725 are recompletion permits, 435 are permits to drill a new well and 137 are permits to deepen, sidetrack or re-enter existing wells. Permits to drill a new well: 435 in the 365 days to September 14, 2026 and 83 in the last 90 days of that window.
Well permits approved per month: full table
| Month | Permits approved |
|---|---|
| Sep 2026 (through September 14, 2026) | 100 |
| Aug 2026 | 412 |
| Jul 2026 | 383 |
| Jun 2026 | 285 |
| May 2026 | 299 |
| Apr 2026 | 307 |
| Mar 2026 | 297 |
| Feb 2026 | 147 |
| Jan 2026 | 105 |
| Dec 2025 | 838 |
| Nov 2025 | 396 |
| Oct 2025 | 522 |
| Sep 2025 | 378 |
| Aug 2025 | 301 |
| Jul 2025 | 502 |
| Jun 2025 | 490 |
| May 2025 | 482 |
| Apr 2025 | 518 |
| Mar 2025 | 450 |
| Feb 2025 | 342 |
| Jan 2025 | 381 |
| Dec 2024 | 314 |
| Nov 2024 | 361 |
| Oct 2024 | 709 |
Source: CommoVision (commovision.com)
Active drilling rigs
Interactive chart. Focus it and use the left and right arrow keys to read each week, Page Up and Page Down to move a year, Home and End for the ends of the series. The full figures are also in the table below.
- In California, 5 drilling rigs were active in the week to September 11, 2026 (unchanged from a year earlier).
- Since Sep 2016, the weekly count peaked at 18 in May 2019.
- The count covers land and inland-water rigs; rigs in US federal offshore waters are counted on the Gulf of Mexico page.
Average active rigs per month: full table
| Month | Oil-directed | Gas-directed | Miscellaneous | All rigs |
|---|---|---|---|---|
| Sep 2026 (through September 11, 2026) | 3 | 0 | 2 | 5 |
| Aug 2026 | 4 | 0 | 2 | 6 |
| Jul 2026 | 4 | 0 | 2 | 6 |
| Jun 2026 | 4 | 0 | 2 | 6 |
| May 2026 | 4 | 0 | 2 | 6 |
| Apr 2026 | 4 | 0 | 2 | 6 |
| Mar 2026 | 4 | 0 | 2 | 6 |
| Feb 2026 | 4 | 0 | 2 | 6 |
| Jan 2026 | 4 | 0 | 2 | 6 |
| Dec 2025 | 3.8 | 0.2 | 2 | 6 |
| Nov 2025 | 3 | 1 | 2 | 6 |
| Oct 2025 | 3 | 0 | 2 | 5 |
| Sep 2025 | 3 | 0 | 2 | 5 |
| Aug 2025 | 3 | 0 | 2 | 5 |
| Jul 2025 | 1 | 1 | 2 | 4 |
| Jun 2025 | 1 | 1.2 | 2 | 4.2 |
| May 2025 | 1 | 1 | 2 | 4 |
| Apr 2025 | 0.5 | 1.2 | 2 | 3.8 |
| Mar 2025 | 2 | 2 | 2 | 6 |
| Feb 2025 | 2 | 2 | 2 | 6 |
| Jan 2025 | 1 | 1.8 | 2 | 4.8 |
| Dec 2024 | 1 | 1 | 2 | 4 |
| Nov 2024 | 1 | 1 | 2 | 4 |
| Oct 2024 | 1 | 1 | 2 | 4 |
Source: CommoVision (commovision.com)
What we cover here
Each row names the grain a region’s production is held at. Where a source publishes at a coarser grain, the page says so.
| Data | Grain | Since | Benchmark |
|---|---|---|---|
| California production | well | 1944-03 | ~98–101% of EIA |
Benchmark cells compare our series with the EIA’s published estimates.
About the EIA comparison
The two are produced differently: the EIA estimates from a survey of the largest operators and a model built to anticipate late filings, while the series compared here are rebuilt from the source’s own records as they arrive. Recent months can differ without either being wrong; the methodology page explains both methods.
Coverage rows for California are regenerated at every build from the same catalog of sources the data is built from.
How our California production compares with the EIA
- Our California oil total is within 0.05% of the EIA series over May 2023 to April 2026. Those are the last 36 months our own figures have settled.
- Our California natural gas total is 2.7% below the EIA series over May 2023 to April 2026. Those are the last 36 months our own figures have settled.
Why the two differ
The EIA estimates state totals from an operator survey. The series compared here are rebuilt from the source’s own records as they arrive. Recent months differ while filings are still arriving. Every region, beside the EIA series and why the two differ.
What the data shows
- California produced 105.4 MMbbl of oil and 112.4 Bcf of natural gas in 2025.
- California oil production peaked in 1985 at 394.7 MMbbl; 2025 output of 105.4 MMbbl ran at 27% of that peak.
- 42,443 producing wells tracked, 12 months to Apr 2026.
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