DUMLER (A-2)
Lease 1001137200 · Russell County, Kansas · NENESE Sec 20 T15S R15W · DOR 123996
Oil1984–20261 well
Operator
Vonfeldt, Alan J
Cumulative (state figure)
78,371.95 bbl
First production
1984
Last production
2026
Location (PLSS)
NENESE Sec 20 T15S R15W
Monthly oil production
317 months filed with the Kansas Geological Survey, Sep 1984 to Apr 2026. Volumes are bbl at lease level — a lease can cover many wells, so this is not a well's output.
Total over the months shown
78,371.90 bbl
Months filed
317
Most wells in a month
5
| Month | Oil (bbl) | Wells |
|---|---|---|
| Apr 2026 | 154.20 | 1 |
| Mar 2026 | 187.39 | 1 |
| Feb 2026 | 174.59 | 1 |
| Jan 2026 | 170.90 | 1 |
| Dec 2025 | 176.12 | 1 |
| Oct 2025 | 186.03 | 1 |
| Sep 2025 | 174.29 | 1 |
| Aug 2025 | 167.10 | 1 |
| Jun 2025 | 173.69 | 1 |
| May 2025 | 179.50 | 1 |
| Apr 2025 | 177.65 | 1 |
| Mar 2025 | 184.56 | 1 |
| Feb 2025 | 176.64 | 1 |
| Jan 2025 | 178.91 | 1 |
| Dec 2024 | 164.02 | 1 |
| Oct 2024 | 173.13 | 1 |
| Sep 2024 | 167.03 | 1 |
| Aug 2024 | 177.97 | 1 |
| Jul 2024 | 173.67 | 1 |
| Jun 2024 | 191.69 | 1 |
| May 2024 | 192.23 | 1 |
| Apr 2024 | 168.14 | 1 |
| Mar 2024 | 181.37 | 1 |
| Feb 2024 | 195.08 | 1 |
| Jan 2024 | 197.91 | 1 |
| Dec 2023 | 182.21 | 1 |
| Nov 2023 | 193.48 | 1 |
| Oct 2023 | 192.76 | 1 |
| Sep 2023 | 171.01 | 1 |
| Aug 2023 | 189.87 | 1 |
| Jul 2023 | 195.85 | 1 |
| Jun 2023 | 168.05 | 1 |
| May 2023 | 371.80 | 1 |
| Apr 2023 | 187.26 | 1 |
| Mar 2023 | 174.17 | 1 |
| Feb 2023 | 184.29 | 1 |
| Jan 2023 | 189.06 | 1 |
| Dec 2022 | 346.47 | 1 |
| Nov 2022 | 341.65 | 1 |
| Oct 2022 | 165.65 | 1 |
| Sep 2022 | 173.81 | 1 |
| Aug 2022 | 169.89 | 1 |
| Jul 2022 | 331.41 | 1 |
| Jun 2022 | 328.17 | 1 |
| May 2022 | 171.04 | 1 |
| Apr 2022 | 514.64 | 1 |
| Mar 2022 | 170.98 | 1 |
| Feb 2022 | 348.07 | 1 |
| Jan 2022 | 535.80 | 1 |
| Dec 2021 | 526.89 | 1 |
| Nov 2021 | 702.17 | 1 |
| Apr 2021 | 151.97 | 1 |
| Sep 2020 | 158.10 | 1 |
| Mar 2020 | 151.78 | 1 |
| Dec 2019 | 157.83 | 1 |
| Aug 2019 | 155.44 | 1 |
| May 2019 | 164.27 | 1 |
| Jan 2019 | 159.88 | 1 |
| Sep 2018 | 155.60 | 1 |
| May 2018 | 158.56 | 1 |
| Feb 2018 | 163.30 | 1 |
| Nov 2017 | 167.63 | 1 |
| Aug 2017 | 158.73 | 1 |
| May 2017 | 7.95 | 1 |
| Apr 2017 | 152.85 | 1 |
| Dec 2016 | 167.56 | 1 |
| Sep 2016 | 157.54 | 1 |
| Jun 2016 | 163.17 | 1 |
| Mar 2016 | 149.80 | 1 |
| Dec 2015 | 164.90 | 1 |
| Sep 2015 | 159.58 | 1 |
| May 2015 | 158.72 | 1 |
| Feb 2015 | 159.93 | 1 |
| Oct 2014 | 161.44 | 1 |
| Aug 2014 | 155.63 | 1 |
| Apr 2014 | 154.25 | 1 |
| Jan 2014 | 161.08 | 1 |
| Oct 2013 | 156.39 | 1 |
| Jul 2013 | 158.38 | 1 |
| Apr 2013 | 163.94 | 1 |
| Dec 2012 | 163.29 | 1 |
| Oct 2012 | 159.27 | 1 |
| Jul 2012 | 158.91 | 1 |
| Apr 2012 | 168.64 | 1 |
| Jan 2012 | 162.89 | 1 |
| Sep 2011 | 147.57 | 1 |
| May 2011 | 156.99 | 1 |
| Feb 2011 | 158.19 | 1 |
| Dec 2010 | 158.53 | 1 |
| Sep 2010 | 156.19 | 1 |
| Jun 2010 | 155.79 | 1 |
| Feb 2010 | 185.56 | 1 |
| Oct 2009 | 153.54 | 1 |
| Jul 2009 | 153.69 | 1 |
| May 2009 | 165.70 | 1 |
| Feb 2009 | 158.38 | 1 |
| Dec 2008 | 166.23 | 1 |
| Oct 2008 | 162.01 | 1 |
| Jul 2008 | 165.20 | 1 |
| May 2008 | 161.21 | 1 |
| Feb 2008 | 165.66 | 1 |
| Oct 2007 | 162.03 | 1 |
| Aug 2007 | 168.76 | 1 |
| Jun 2007 | 167.12 | 1 |
| Apr 2007 | 170.25 | 1 |
| Jan 2007 | 170.05 | 1 |
| Nov 2006 | 163.78 | 1 |
| Aug 2006 | 154.74 | 1 |
| May 2006 | 166.12 | 1 |
| Feb 2006 | 170.90 | 1 |
| Dec 2005 | 172.11 | 1 |
| Oct 2005 | 168.71 | 1 |
| Aug 2005 | 156.17 | 1 |
| May 2005 | 166.42 | 1 |
| Mar 2005 | 178.43 | 1 |
| Jan 2005 | 177.63 | 1 |
| Oct 2004 | 166.74 | 1 |
| Aug 2004 | 162.47 | 1 |
| May 2004 | 171.94 | 1 |
| Feb 2004 | 162.34 | 1 |
| Dec 2003 | 167.13 | 1 |
| Nov 2003 | 165.04 | 1 |
| Sep 2003 | 165.88 | 1 |
| Jul 2003 | 165.82 | 1 |
| May 2003 | 172.31 | 1 |
| Mar 2003 | 167.36 | 1 |
| Jan 2003 | 160.94 | 1 |
| Dec 2002 | 170.61 | 1 |
| Oct 2002 | 171.32 | 1 |
| Aug 2002 | 168.71 | 1 |
| Jul 2002 | 174.76 | 1 |
| May 2002 | 168.53 | 1 |
| Apr 2002 | 170.44 | 1 |
| Feb 2002 | 172.19 | 1 |
| Dec 2001 | 166.02 | 1 |
| Oct 2001 | 159.14 | 1 |
| Sep 2001 | 168.67 | 1 |
| Jul 2001 | 157.72 | 1 |
| May 2001 | 168.32 | 1 |
| Mar 2001 | 164.02 | 1 |
| Feb 2001 | 165.33 | 1 |
| Jan 2001 | 167.83 | 1 |
| Nov 2000 | 159.63 | 3 |
| Sep 2000 | 169.07 | 3 |
| Aug 2000 | 151.62 | 3 |
| Jun 2000 | 163.74 | 3 |
| May 2000 | 159.19 | 3 |
| Mar 2000 | 159.83 | 3 |
| Jan 2000 | 157.14 | 3 |
| Dec 1999 | 164.79 | 3 |
| Oct 1999 | 158.95 | 3 |
| Sep 1999 | 158.13 | 3 |
| Jul 1999 | 152.77 | 5 |
| May 1999 | 149.49 | 5 |
| Apr 1999 | 154.32 | 5 |
| Feb 1999 | 162.49 | 5 |
| Jan 1999 | 164.20 | 5 |
| Nov 1998 | 158.08 | 5 |
| Oct 1998 | 152.57 | 5 |
| Sep 1998 | 159.56 | 5 |
| Jul 1998 | 156.25 | 1 |
| Jun 1998 | 149.33 | 1 |
| May 1998 | 157.28 | 1 |
| Mar 1998 | 156.07 | 1 |
| Feb 1998 | 166.50 | 1 |
| Dec 1997 | 154.66 | 1 |
| Nov 1997 | 144.53 | 1 |
| Oct 1997 | 160.88 | 1 |
| Aug 1997 | 157.86 | 1 |
| Jul 1997 | 161.89 | 1 |
| Jun 1997 | 154.11 | 1 |
| May 1997 | 165.08 | 1 |
| Apr 1997 | 159.48 | 1 |
| Mar 1997 | 166.38 | 1 |
| Feb 1997 | 163.87 | 1 |
| Dec 1996 | 159.66 | 1 |
| Nov 1996 | 166.50 | 1 |
| Oct 1996 | 162.83 | 1 |
| Aug 1996 | 155.33 | 1 |
| Jul 1996 | 157.54 | 1 |
| Jun 1996 | 162.69 | 1 |
| May 1996 | 164.06 | 1 |
| Apr 1996 | 156.52 | 1 |
| Mar 1996 | 159.70 | 1 |
| Feb 1996 | 159.58 | 1 |
| Jan 1996 | 164.10 | 1 |
| Dec 1995 | 166.00 | 1 |
| Nov 1995 | 162.00 | 1 |
| Oct 1995 | 162.00 | 1 |
| Aug 1995 | 156.00 | 1 |
| Jul 1995 | 157.00 | 1 |
| Jun 1995 | 157.00 | 1 |
| May 1995 | 165.00 | 1 |
| Apr 1995 | 167.00 | 1 |
| Mar 1995 | 158.00 | 1 |
| Feb 1995 | 165.00 | 1 |
| Jan 1995 | 170.00 | 1 |
| Nov 1994 | 161.00 | 1 |
| Oct 1994 | 160.00 | 1 |
| Sep 1994 | 168.00 | 1 |
| Aug 1994 | 163.00 | 1 |
| Jul 1994 | 157.00 | 1 |
| Jun 1994 | 162.00 | 1 |
| May 1994 | 140.00 | 1 |
| Apr 1994 | 170.00 | 1 |
| Mar 1994 | 170.00 | 1 |
| Feb 1994 | 173.00 | 1 |
| Jan 1994 | 171.00 | 1 |
| Dec 1993 | 171.00 | 1 |
| Nov 1993 | 179.00 | 1 |
| Oct 1993 | 181.00 | 1 |
| Sep 1993 | 181.00 | 1 |
| Aug 1993 | 178.00 | 1 |
| Jul 1993 | 179.00 | 1 |
| Jun 1993 | 160.00 | 1 |
| Apr 1993 | 171.00 | 1 |
| Mar 1993 | 330.00 | 1 |
| Jan 1993 | 164.00 | 1 |
| Dec 1992 | 321.00 | 1 |
| Nov 1992 | 194.00 | 1 |
| Oct 1992 | 184.00 | 1 |
| Sep 1992 | 184.00 | 1 |
| Aug 1992 | 182.00 | 1 |
| Jul 1992 | 185.00 | 1 |
| Jun 1992 | 183.00 | 1 |
| May 1992 | 176.00 | 1 |
| Apr 1992 | 185.00 | 1 |
| Mar 1992 | 184.00 | 1 |
| Feb 1992 | 163.00 | 1 |
| Jan 1992 | 165.00 | 1 |
| Dec 1991 | 335.00 | 1 |
| Oct 1991 | 181.00 | 1 |
| Sep 1991 | 170.00 | 1 |
| Aug 1991 | 179.00 | 1 |
| Jul 1991 | 176.00 | 1 |
| Jun 1991 | 319.00 | 1 |
| May 1991 | 164.00 | 1 |
| Apr 1991 | 160.00 | 1 |
| Mar 1991 | 165.00 | 1 |
| Feb 1991 | 160.00 | 1 |
| Jan 1991 | 326.00 | 1 |
| Dec 1990 | 165.00 | 1 |
| Nov 1990 | 168.00 | 1 |
| Oct 1990 | 317.00 | 1 |
| Sep 1990 | 163.00 | 1 |
| Aug 1990 | 157.00 | 1 |
| Jul 1990 | 326.00 | 1 |
| Jun 1990 | 159.00 | 1 |
| May 1990 | 328.00 | 1 |
| Apr 1990 | 161.00 | 1 |
| Mar 1990 | 163.00 | 1 |
| Feb 1990 | 333.00 | 1 |
| Jan 1990 | 166.00 | 1 |
| Dec 1989 | 162.00 | 1 |
| Nov 1989 | 314.00 | 1 |
| Oct 1989 | 156.00 | 1 |
| Sep 1989 | 298.00 | 1 |
| Aug 1989 | 157.00 | 1 |
| Jul 1989 | 327.00 | 1 |
| Jun 1989 | 153.00 | 1 |
| May 1989 | 325.00 | 1 |
| Apr 1989 | 159.00 | 1 |
| Mar 1989 | 334.00 | 1 |
| Feb 1989 | 163.00 | 1 |
| Jan 1989 | 340.00 | 1 |
| Dec 1988 | 330.00 | 1 |
| Nov 1988 | 159.00 | 1 |
| Oct 1988 | 328.00 | 1 |
| Sep 1988 | 313.00 | 1 |
| Aug 1988 | 317.00 | 1 |
| Jul 1988 | 314.00 | 1 |
| Jun 1988 | 313.00 | 1 |
| May 1988 | 324.00 | 1 |
| Apr 1988 | 158.00 | 1 |
| Mar 1988 | 327.00 | 1 |
| Feb 1988 | 321.00 | 1 |
| Jan 1988 | 326.00 | 1 |
| Dec 1987 | 321.00 | 1 |
| Nov 1987 | 485.00 | 1 |
| Oct 1987 | 314.00 | 1 |
| Sep 1987 | 312.00 | 1 |
| Aug 1987 | 326.00 | 1 |
| Jul 1987 | 478.00 | 1 |
| Jun 1987 | 333.00 | 1 |
| May 1987 | 334.00 | 1 |
| Apr 1987 | 323.00 | 1 |
| Mar 1987 | 497.00 | 1 |
| Feb 1987 | 321.00 | 1 |
| Jan 1987 | 329.00 | 1 |
| Dec 1986 | 493.00 | 1 |
| Nov 1986 | 464.00 | 1 |
| Oct 1986 | 332.00 | 1 |
| Sep 1986 | 497.00 | 1 |
| Aug 1986 | 502.00 | 1 |
| Jul 1986 | 488.00 | 1 |
| Jun 1986 | 503.00 | 1 |
| May 1986 | 506.00 | 1 |
| Apr 1986 | 496.00 | 1 |
| Mar 1986 | 501.00 | 1 |
| Feb 1986 | 506.00 | 1 |
| Jan 1986 | 673.00 | 1 |
| Dec 1985 | 502.00 | 1 |
| Nov 1985 | 677.00 | 1 |
| Oct 1985 | 676.00 | 1 |
| Sep 1985 | 669.00 | 1 |
| Aug 1985 | 835.00 | 1 |
| Jul 1985 | 835.00 | 1 |
| Jun 1985 | 829.00 | 1 |
| May 1985 | 1,334.00 | 1 |
| Apr 1985 | 1,177.00 | 1 |
| Mar 1985 | 1,187.00 | 1 |
| Feb 1985 | 1,390.00 | 1 |
| Jan 1985 | 1,540.00 | 1 |
| Dec 1984 | 1,539.00 | 1 |
| Nov 1984 | 1,011.00 | 1 |
| Oct 1984 | 1,176.00 | 1 |
| Sep 1984 | 159.00 | 1 |
Lease-level volumes as filed with the Kansas Geological Survey. A blank well count is a month the state filed no count for, not a month with no wells.
Wells on this lease
1 well the state's well register assigns to this lease. Every one has a page.
| Well | No. | Operator | Status |
|---|---|---|---|
| Dumler A | 2 | Vonfeldt, Alan J | Producing |
Location
38.731915, -99.004879 · NENESE Sec 20 T15S R15W
Kansas Geological Survey data, corpus built 2026-09-07. Lease 1001137200. The state’s own record.