Fallon County, Montana
Fallon County, Montana produced 2.1 MMbbl of oil and 4.0 Bcf of natural gas in 2025. 1,322 producing wells tracked, 12 months to May 2026.
- Third-largest oil-producing county in Montana, 2025.
- 7.5% of the oil produced in Montana, 2025.
- Oil production fell 11% in 2025 from 2024.
Production
Still arriving: Jul 2026 <1% filed, Aug 2026 <1% filed.
All from what the source published. All held at well grain.
How the volume breaks down
- 100% Reported by the official source by well
Every barrel through May 2026 starts from what the official source published for those months. Measured over January 1986 to May 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.
Still arriving: Jul 2026 <1% filed, Aug 2026 <1% filed.
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
- 100% Reported by the official source by well
Every cubic foot through May 2026 starts from what the official source published for those months. Measured over January 1986 to May 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)
| Year | Oil (MMbbl) | Gas produced (Bcf) |
|---|---|---|
| 2025 | 2.1 | 4 |
| 2024 | 2.4 | 4 |
| 2023 | 2.7 | 5 |
| 2022 | 2.7 | 5 |
| 2021 | 2.9 | 6 |
| 2020 | 3.1 | 6 |
| 2019 | 3.6 | 6 |
| 2018 | 3.6 | 7 |
| 2017 | 3.3 | 7 |
| 2016 | 3.5 | 8 |
| 2015 | 3.8 | 9 |
| 2014 | 4.0 | 10 |
| 2013 | 4.1 | 11 |
| 2012 | 4.4 | 13 |
| 2011 | 4.7 | 17 |
| 2010 | 5.1 | 22 |
| 2009 | 5.8 | 26 |
| 2008 | 6.2 | 29 |
| 2007 | 6.8 | 27 |
| 2006 | 7.3 | 25 |
| 2005 | 6.9 | 23 |
| 2004 | 6.2 | 19 |
| 2003 | 5.4 | 15 |
| 2002 | 4.9 | 12 |
| 2001 | 4.4 | 9 |
| 2000 | 4.1 | 7 |
| 1999 | 4.1 | 6 |
| 1998 | 4.2 | 5 |
| 1997 | 4.2 | 4 |
| 1996 | 4.6 | 3 |
| 1995 | 4.5 | 3 |
| 1994 | 4.3 | 2 |
| 1993 | 4.4 | 2 |
| 1992 | 4.6 | 2 |
| 1991 | 4.7 | 2 |
| 1990 | 4.7 | 2 |
| 1989 | 4.9 | 2 |
| 1988 | 5.1 | 2 |
| 1987 | 5.1 | 1 |
| 1986 | 5.3 | 1 |
Source: CommoVision (commovision.com)
Monthly table (last 24 months)
| Month | Oil (Mbbl) | Gas produced (MMcf) |
|---|---|---|
| 2026-05 | 16.2 | 286 |
| 2026-04 | 16.4 | 280 |
| 2026-03 | 184.1 | 346 |
| 2026-02 | 160.1 | 311 |
| 2026-01 | 176.6 | 336 |
| 2025-12 | 176.8 | 330 |
| 2025-11 | 180.2 | 331 |
| 2025-10 | 181.4 | 341 |
| 2025-09 | 177.6 | 346 |
| 2025-08 | 186.7 | 340 |
| 2025-07 | 173.5 | 336 |
| 2025-06 | 169.6 | 321 |
| 2025-05 | 180.3 | 325 |
| 2025-04 | 177.4 | 319 |
| 2025-03 | 185.1 | 331 |
| 2025-02 | 161.1 | 295 |
| 2025-01 | 187.5 | 358 |
| 2024-12 | 194.4 | 361 |
| 2024-11 | 186.8 | 353 |
| 2024-10 | 196.0 | 376 |
| 2024-09 | 191.0 | 372 |
| 2024-08 | 205.4 | 365 |
| 2024-07 | 200.7 | 377 |
| 2024-06 | 193.7 | 368 |
Source: CommoVision (commovision.com)
Source: CommoVision · Fallon County, Montana, data through June 2026.
Well map
- Oil 858
- Natural gas 1,261
- Undetermined 652
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 May 2026.
Type curves
Horizontal wells only. Average production per well, for wells grouped by when they first produced.
How these curves are built
Horizontal wells only: 27 of the 119 wells in these cohorts. 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. 90 wells are counted here but not shown on the age axis: they started producing in 1988 or earlier, too close to the start of our records for their region to verify their true age.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | 4 | 239 | 54.3 | 95.0 | 4.1 | 1.2 | 0.0 | 80 | 100% | 60 |
| 2018 | 7 | 543 | 164 | 247 | 12.3 | 2.9 | 0.0 | 90 | 100% | 60 |
| 2010-2014 | 16 | 71.3 | 49 | 174 | 133 | 126 | 0.1 | 138 | 100% | 60 |
Source: CommoVision (commovision.com)
Source: CommoVision · Fallon County, Montana type curves, per-well production by first-production cohort.
Top operators in Fallon County, Montana, 2025
Top operators in Fallon County, Montana, 2025: full table
| Operator | Oil (Mbbl/d, 2025) | Gas produced (MMcf/d, 2025) | Share of output |
|---|---|---|---|
| ExxonMobil | 5.3 | 1.2 | 81.6% |
| Ridge Oil & Gas, LLC (March to December) | 0.0 | 9.4 | 8.0% |
| Continental Resources | 0.4 | 0.1 | 6.7% |
| Wesco Operating Inc. | 0.1 | 0.0 | 2.0% |
| Scout Energy Management (January to February) | 0.0 | 9.5 | 1.6% |
| Jurassic Resources Development Na LLC | 0.0 | 0.1 | 0.1% |
| Remuda Energy Development, LLC | 0.0 | 0.0 | 0.0% |
| City Of Baker | 0.0 | 0.0 | 0.0% |
| Diamond Oil & Gas LLC (January to April) | 0.0 | 0.0 | 0.0% |
| Reserve Operating Corp. | 0.0 | 0.0 | 0.0% |
Mbbl/d = thousand barrels per day · MMcf/d = million cubic feet per day (units).
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 Fallon County, Montana, 0 drilling rigs were active in the week to September 11, 2026 (unchanged from a year earlier).
- Since Sep 2016, the weekly count peaked at 2 in Oct 2018.
- 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 | All rigs |
|---|---|---|
| Sep 2026 (through September 11, 2026) | 0 | 0 |
| Aug 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| Mar 2026 | 0 | 0 |
| Feb 2026 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
| Nov 2024 | 0 | 0 |
| Oct 2024 | 0 | 0 |
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 |
|---|---|---|---|
| Montana production | well | 1986-01 | ~96–100% 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 Fallon County, Montana are regenerated at every build from the same catalog of sources the data is built from.
What the data shows
- Fallon County, Montana produced 2.1 MMbbl of oil and 4.0 Bcf of natural gas in 2025.
- Fallon County, Montana oil production peaked in 2006 at 7.3 MMbbl; 2025 output of 2.1 MMbbl ran at 29% of that peak.
- 1,322 producing wells tracked, 12 months to May 2026.
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