PFEIFFER
Lease 1001118179 · Ellis County, Kansas · NWNESW Sec 5 T14S R17W · DOR 108511
Oil1958–20263 wells
Operator
Mai Oil Operations, Inc.
Cumulative (state figure)
157,634.57 bbl
First production
1958
Last production
2026
Location (PLSS)
NWNESW Sec 5 T14S R17W
Monthly oil production
465 months filed with the Kansas Geological Survey, Jan 1980 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
98,353.60 bbl
Months filed
465
Most wells in a month
2
This lease was producing before 1980, and the series begins in January 1980. The total above covers the months shown, not the life of the lease; the state's own cumulative is 157,634.57 bbl.
| Month | Oil (bbl) | Wells |
|---|---|---|
| Apr 2026 | 320.83 | 2 |
| Mar 2026 | 157.77 | 2 |
| Feb 2026 | 154.71 | 2 |
| Jan 2026 | 159.37 | 2 |
| Dec 2025 | 161.89 | 2 |
| Nov 2025 | 323.87 | 2 |
| Oct 2025 | 157.56 | 2 |
| Sep 2025 | 158.59 | 2 |
| Aug 2025 | 160.14 | 2 |
| Jul 2025 | 308.70 | 2 |
| Jun 2025 | 159.37 | 2 |
| May 2025 | 314.80 | 2 |
| Apr 2025 | 163.48 | 2 |
| Mar 2025 | 326.17 | 2 |
| Feb 2025 | 316.13 | 2 |
| Jan 2025 | 478.90 | 2 |
| Nov 2024 | 162.30 | 2 |
| Oct 2024 | 155.03 | 2 |
| Sep 2024 | 318.20 | 2 |
| Aug 2024 | 162.35 | 2 |
| Jul 2024 | 160.38 | 2 |
| Jun 2024 | 155.58 | 2 |
| May 2024 | 155.00 | 2 |
| Apr 2024 | 325.67 | 2 |
| Mar 2024 | 164.70 | 2 |
| Feb 2024 | 314.60 | 2 |
| Dec 2023 | 160.84 | 2 |
| Nov 2023 | 160.01 | 2 |
| Oct 2023 | 327.35 | 2 |
| Sep 2023 | 170.71 | 2 |
| Aug 2023 | 153.20 | 2 |
| Jul 2023 | 159.62 | 2 |
| Jun 2023 | 156.73 | 2 |
| May 2023 | 316.84 | 2 |
| Apr 2023 | 159.16 | 2 |
| Mar 2023 | 160.51 | 2 |
| Feb 2023 | 324.31 | 2 |
| Jan 2023 | 159.37 | 2 |
| Dec 2022 | 161.38 | 2 |
| Nov 2022 | 163.92 | 2 |
| Oct 2022 | 164.23 | 2 |
| Sep 2022 | 313.93 | 2 |
| Aug 2022 | 155.73 | 2 |
| Jul 2022 | 322.71 | 2 |
| Jun 2022 | 159.55 | 2 |
| May 2022 | 322.51 | 2 |
| Apr 2022 | 156.63 | 2 |
| Mar 2022 | 327.84 | 2 |
| Feb 2022 | 156.68 | 2 |
| Jan 2022 | 330.27 | 2 |
| Dec 2021 | 173.51 | 2 |
| Nov 2021 | 321.69 | 2 |
| Oct 2021 | 155.62 | 2 |
| Sep 2021 | 318.05 | 2 |
| Aug 2021 | 316.08 | 2 |
| Jul 2021 | 308.88 | 2 |
| Jun 2021 | 312.68 | 2 |
| May 2021 | 326.86 | 2 |
| Apr 2021 | 324.42 | 2 |
| Mar 2021 | 323.29 | 2 |
| Feb 2021 | 319.28 | 2 |
| Jan 2021 | 333.71 | 2 |
| Dec 2020 | 489.32 | 2 |
| Nov 2020 | 329.86 | 2 |
| Oct 2020 | 314.22 | 2 |
| Sep 2020 | 325.13 | 2 |
| Aug 2020 | 489.14 | 2 |
| Jul 2020 | 323.30 | 2 |
| Jun 2020 | 480.87 | 2 |
| May 2020 | 482.42 | 2 |
| Apr 2020 | 332.00 | 2 |
| Mar 2020 | 431.94 | 2 |
| Feb 2020 | 623.76 | 1 |
| Jan 2020 | 491.46 | 1 |
| Dec 2019 | 643.08 | 1 |
| Nov 2019 | 500.36 | 1 |
| Oct 2019 | 820.44 | 1 |
| Sep 2019 | 1,144.70 | 1 |
| Aug 2019 | 953.16 | 1 |
| Jul 2019 | 158.64 | 1 |
| Jun 2019 | 162.54 | 1 |
| Mar 2019 | 162.58 | 1 |
| Dec 2018 | 176.07 | 1 |
| Oct 2018 | 161.47 | 1 |
| Aug 2018 | 156.78 | 1 |
| May 2018 | 201.68 | 1 |
| Mar 2018 | 162.39 | 1 |
| Jan 2018 | 160.08 | 1 |
| Nov 2017 | 156.43 | 1 |
| Aug 2017 | 155.35 | 1 |
| Jun 2017 | 160.54 | 1 |
| May 2017 | 161.14 | 1 |
| Mar 2017 | 161.58 | 1 |
| Dec 2016 | 156.70 | 1 |
| Oct 2016 | 162.78 | 1 |
| Aug 2016 | 155.72 | 1 |
| Jun 2016 | 157.08 | 1 |
| Apr 2016 | 158.92 | 1 |
| Mar 2016 | 158.65 | 1 |
| Jan 2016 | 159.64 | 1 |
| Nov 2015 | 160.58 | 1 |
| Sep 2015 | 157.10 | 1 |
| Jun 2015 | 155.16 | 1 |
| May 2015 | 161.38 | 1 |
| Mar 2015 | 157.18 | 1 |
| Jan 2015 | 162.43 | 1 |
| Nov 2014 | 158.52 | 1 |
| Sep 2014 | 156.99 | 1 |
| Jul 2014 | 156.96 | 1 |
| Jun 2014 | 30.80 | 1 |
| May 2014 | 159.76 | 1 |
| Mar 2014 | 159.37 | 1 |
| Jan 2014 | 159.94 | 1 |
| Nov 2013 | 158.25 | 1 |
| Sep 2013 | 157.54 | 1 |
| Aug 2013 | 159.97 | 1 |
| Jun 2013 | 159.00 | 1 |
| Apr 2013 | 160.11 | 1 |
| Mar 2013 | 161.61 | 1 |
| Jan 2013 | 158.24 | 1 |
| Nov 2012 | 158.94 | 1 |
| Sep 2012 | 164.10 | 1 |
| Jul 2012 | 155.03 | 1 |
| May 2012 | 161.12 | 1 |
| Apr 2012 | 157.82 | 1 |
| Feb 2012 | 156.97 | 1 |
| Jan 2012 | 157.82 | 1 |
| Nov 2011 | 160.44 | 1 |
| Sep 2011 | 157.87 | 1 |
| Aug 2011 | 155.17 | 1 |
| Jun 2011 | 158.06 | 1 |
| Apr 2011 | 157.40 | 1 |
| Mar 2011 | 162.53 | 1 |
| Jan 2011 | 161.85 | 1 |
| Dec 2010 | 160.29 | 1 |
| Oct 2010 | 164.10 | 1 |
| Aug 2010 | 155.87 | 1 |
| Jun 2010 | 156.08 | 1 |
| May 2010 | 159.61 | 1 |
| Mar 2010 | 157.54 | 1 |
| Feb 2010 | 157.86 | 1 |
| Dec 2009 | 162.37 | 1 |
| Nov 2009 | 157.67 | 1 |
| Sep 2009 | 158.62 | 1 |
| Jul 2009 | 155.23 | 1 |
| Jun 2009 | 158.23 | 1 |
| Apr 2009 | 159.44 | 1 |
| Mar 2009 | 161.99 | 1 |
| Jan 2009 | 154.59 | 1 |
| Dec 2008 | 157.94 | 1 |
| Oct 2008 | 158.50 | 1 |
| Aug 2008 | 160.24 | 1 |
| Jul 2008 | 156.67 | 1 |
| May 2008 | 157.39 | 1 |
| Apr 2008 | 161.84 | 1 |
| Feb 2008 | 165.04 | 1 |
| Jan 2008 | 157.77 | 1 |
| Nov 2007 | 160.87 | 1 |
| Oct 2007 | 158.22 | 1 |
| Sep 2007 | 155.80 | 1 |
| Jul 2007 | 159.07 | 1 |
| Jun 2007 | 160.55 | 1 |
| Apr 2007 | 158.21 | 1 |
| Mar 2007 | 160.26 | 1 |
| Jan 2007 | 150.68 | 1 |
| Nov 2006 | 159.72 | 1 |
| Oct 2006 | 160.05 | 1 |
| Aug 2006 | 158.63 | 1 |
| Jul 2006 | 159.26 | 1 |
| Jun 2006 | 160.04 | 1 |
| Apr 2006 | 158.86 | 1 |
| Mar 2006 | 156.27 | 1 |
| Jan 2006 | 238.04 | 1 |
| Nov 2005 | 161.50 | 1 |
| Oct 2005 | 160.90 | 1 |
| Sep 2005 | 157.49 | 1 |
| Jul 2005 | 158.21 | 1 |
| Jun 2005 | 158.77 | 1 |
| Apr 2005 | 158.75 | 1 |
| Mar 2005 | 163.92 | 1 |
| Feb 2005 | 162.62 | 1 |
| Jan 2005 | 158.17 | 1 |
| Nov 2004 | 153.82 | 1 |
| Oct 2004 | 159.53 | 1 |
| Sep 2004 | 158.67 | 1 |
| Jul 2004 | 177.82 | 1 |
| Jun 2004 | 159.16 | 1 |
| May 2004 | 162.44 | 1 |
| Mar 2004 | 155.74 | 1 |
| Feb 2004 | 157.48 | 1 |
| Jan 2004 | 157.06 | 1 |
| Nov 2003 | 160.67 | 1 |
| Oct 2003 | 160.72 | 1 |
| Sep 2003 | 156.91 | 1 |
| Aug 2003 | 158.68 | 1 |
| Jun 2003 | 159.38 | 1 |
| May 2003 | 154.69 | 1 |
| Apr 2003 | 163.12 | 1 |
| Mar 2003 | 167.11 | 1 |
| Jan 2003 | 161.20 | 1 |
| Dec 2002 | 160.03 | 1 |
| Nov 2002 | 157.99 | 1 |
| Sep 2002 | 163.27 | 1 |
| Aug 2002 | 155.43 | 1 |
| Jul 2002 | 156.46 | 1 |
| Jun 2002 | 157.16 | 1 |
| May 2002 | 161.18 | 1 |
| Apr 2002 | 158.27 | 1 |
| Feb 2002 | 156.33 | 1 |
| Jan 2002 | 162.03 | 1 |
| Dec 2001 | 160.03 | 1 |
| Nov 2001 | 156.76 | 1 |
| Oct 2001 | 164.26 | 1 |
| Aug 2001 | 157.72 | 1 |
| Jul 2001 | 157.41 | 1 |
| Jun 2001 | 155.78 | 1 |
| May 2001 | 155.37 | 1 |
| Apr 2001 | 156.94 | 1 |
| Mar 2001 | 162.07 | 1 |
| Feb 2001 | 159.34 | 1 |
| Jan 2001 | 163.50 | 1 |
| Nov 2000 | 158.85 | 1 |
| Oct 2000 | 162.52 | 1 |
| Sep 2000 | 159.78 | 1 |
| Aug 2000 | 158.29 | 1 |
| Jul 2000 | 159.87 | 1 |
| May 2000 | 162.48 | 1 |
| Apr 2000 | 166.37 | 1 |
| Mar 2000 | 159.88 | 1 |
| Feb 2000 | 161.18 | 1 |
| Jan 2000 | 165.49 | 1 |
| Dec 1999 | 162.72 | 1 |
| Nov 1999 | 162.39 | 1 |
| Oct 1999 | 160.06 | 1 |
| Sep 1999 | 164.55 | 1 |
| Aug 1999 | 147.25 | 1 |
| Jul 1999 | 161.00 | 1 |
| Jun 1999 | 163.79 | 1 |
| May 1999 | 165.77 | 1 |
| Apr 1999 | 165.85 | 1 |
| Mar 1999 | 170.04 | 1 |
| Feb 1999 | 162.18 | 1 |
| Jan 1999 | 161.59 | 1 |
| Dec 1998 | 164.71 | 1 |
| Nov 1998 | 162.63 | 1 |
| Oct 1998 | 166.46 | 1 |
| Sep 1998 | 330.16 | 1 |
| Aug 1998 | 165.60 | 1 |
| Jul 1998 | 160.77 | 1 |
| Jun 1998 | 165.34 | 1 |
| May 1998 | 165.14 | 1 |
| Apr 1998 | 165.53 | 1 |
| Mar 1998 | 167.95 | 1 |
| Feb 1998 | 165.81 | 1 |
| Jan 1998 | 330.67 | 1 |
| Nov 1997 | 326.25 | 1 |
| Oct 1997 | 160.76 | 1 |
| Sep 1997 | 158.07 | 1 |
| Aug 1997 | 327.68 | 1 |
| Jul 1997 | 160.82 | 1 |
| Jun 1997 | 163.53 | 1 |
| May 1997 | 329.82 | 1 |
| Apr 1997 | 168.99 | 1 |
| Mar 1997 | 169.08 | 1 |
| Feb 1997 | 166.71 | 1 |
| Jan 1997 | 336.78 | 1 |
| Dec 1996 | 163.58 | 1 |
| Nov 1996 | 168.45 | 1 |
| Oct 1996 | 294.95 | 1 |
| Sep 1996 | 168.44 | 1 |
| Aug 1996 | 330.41 | 1 |
| Jul 1996 | 162.94 | 1 |
| Jun 1996 | 159.92 | 1 |
| May 1996 | 341.12 | 1 |
| Apr 1996 | 166.67 | 1 |
| Mar 1996 | 338.43 | 1 |
| Feb 1996 | 168.86 | 1 |
| Jan 1996 | 337.25 | 1 |
| Dec 1995 | 155.00 | 1 |
| Nov 1995 | 335.00 | 1 |
| Oct 1995 | 158.00 | 1 |
| Sep 1995 | 165.00 | 1 |
| Aug 1995 | 324.00 | 1 |
| Jul 1995 | 336.00 | 1 |
| Jun 1995 | 156.00 | 1 |
| May 1995 | 328.00 | 1 |
| Apr 1995 | 333.00 | 1 |
| Mar 1995 | 165.00 | 1 |
| Feb 1995 | 169.00 | 1 |
| Jan 1995 | 343.00 | 1 |
| Dec 1994 | 320.00 | 1 |
| Nov 1994 | 172.00 | 1 |
| Oct 1994 | 308.00 | 1 |
| Sep 1994 | 336.00 | 1 |
| Aug 1994 | 165.00 | 1 |
| Jul 1994 | 165.00 | 1 |
| Jun 1994 | 170.00 | 1 |
| May 1994 | 345.00 | 1 |
| Apr 1994 | 347.00 | 1 |
| Mar 1994 | 298.00 | 1 |
| Jan 1994 | 514.00 | 1 |
| Dec 1993 | 176.00 | 1 |
| Nov 1993 | 167.00 | 1 |
| Oct 1993 | 325.00 | 1 |
| Sep 1993 | 169.00 | 1 |
| Aug 1993 | 165.00 | 1 |
| Jul 1993 | 322.00 | 1 |
| Jun 1993 | 163.00 | 1 |
| May 1993 | 334.00 | 1 |
| Apr 1993 | 168.00 | 1 |
| Mar 1993 | 327.00 | 1 |
| Feb 1993 | 21.00 | 1 |
| Jan 1993 | 333.00 | 1 |
| Dec 1992 | 167.00 | 1 |
| Nov 1992 | 173.00 | 1 |
| Oct 1992 | 166.00 | 1 |
| Sep 1992 | 330.00 | 1 |
| Aug 1992 | 169.00 | 1 |
| Jul 1992 | 327.00 | 1 |
| Jun 1992 | 164.00 | 1 |
| May 1992 | 169.00 | 1 |
| Apr 1992 | 318.00 | 1 |
| Mar 1992 | 321.00 | 1 |
| Feb 1992 | 134.00 | 1 |
| Jan 1992 | 322.00 | 1 |
| Dec 1991 | 171.00 | 1 |
| Nov 1991 | 164.00 | 1 |
| Oct 1991 | 322.00 | 1 |
| Sep 1991 | 162.00 | 1 |
| Aug 1991 | 165.00 | 1 |
| Jul 1991 | 335.00 | 1 |
| Jun 1991 | 170.00 | 1 |
| May 1991 | 335.00 | 1 |
| Apr 1991 | 173.00 | 1 |
| Mar 1991 | 170.00 | 1 |
| Feb 1991 | 341.00 | 1 |
| Jan 1991 | 341.00 | 1 |
| Dec 1990 | 170.00 | 1 |
| Nov 1990 | 170.00 | 1 |
| Oct 1990 | 327.00 | 1 |
| Sep 1990 | 165.00 | 1 |
| Aug 1990 | 166.00 | 1 |
| Jul 1990 | 331.00 | 1 |
| Jun 1990 | 332.00 | 1 |
| May 1990 | 165.00 | 1 |
| Apr 1990 | 166.00 | 1 |
| Mar 1990 | 167.00 | 1 |
| Feb 1990 | 341.00 | 1 |
| Jan 1990 | 169.00 | 1 |
| Dec 1989 | 333.00 | 1 |
| Nov 1989 | 166.00 | 1 |
| Oct 1989 | 319.00 | 1 |
| Sep 1989 | 329.00 | 1 |
| Aug 1989 | 169.00 | 1 |
| Jul 1989 | 165.00 | 1 |
| Jun 1989 | 334.00 | 1 |
| May 1989 | 336.00 | 1 |
| Apr 1989 | 172.00 | 1 |
| Mar 1989 | 174.00 | 1 |
| Feb 1989 | 342.00 | 1 |
| Jan 1989 | 167.00 | 1 |
| Dec 1988 | 336.00 | 1 |
| Nov 1988 | 167.00 | 1 |
| Oct 1988 | 296.00 | 1 |
| Sep 1988 | 132.00 | 1 |
| Aug 1988 | 332.00 | 1 |
| Jul 1988 | 164.00 | 1 |
| Jun 1988 | 170.00 | 1 |
| May 1988 | 328.00 | 1 |
| Apr 1988 | 165.00 | 1 |
| Mar 1988 | 338.00 | 1 |
| Feb 1988 | 172.00 | 1 |
| Jan 1988 | 340.00 | 1 |
| Dec 1987 | 168.00 | 1 |
| Nov 1987 | 169.00 | 1 |
| Oct 1987 | 167.00 | 1 |
| Sep 1987 | 341.00 | 1 |
| Aug 1987 | 164.00 | 1 |
| Jul 1987 | 333.00 | 1 |
| Jun 1987 | 170.00 | 1 |
| May 1987 | 170.00 | 1 |
| Apr 1987 | 337.00 | 1 |
| Mar 1987 | 164.00 | 1 |
| Feb 1987 | 160.00 | 1 |
| Jan 1987 | 328.00 | 1 |
| Dec 1986 | 279.00 | 1 |
| Nov 1986 | 105.00 | 1 |
| Oct 1986 | 168.00 | 1 |
| Sep 1986 | 171.00 | 1 |
| Aug 1986 | 165.00 | 1 |
| Jul 1986 | 323.00 | 1 |
| Jun 1986 | 170.00 | 1 |
| May 1986 | 166.00 | 1 |
| Apr 1986 | 304.00 | 1 |
| Mar 1986 | 169.00 | 1 |
| Feb 1986 | 338.00 | 1 |
| Jan 1986 | 169.00 | 1 |
| Dec 1985 | 171.00 | 1 |
| Nov 1985 | 336.00 | 1 |
| Oct 1985 | 167.00 | 1 |
| Sep 1985 | 163.00 | 1 |
| Aug 1985 | 166.00 | 1 |
| Jul 1985 | 333.00 | 1 |
| Jun 1985 | 170.00 | 1 |
| May 1985 | 163.00 | 1 |
| Apr 1985 | 169.00 | 1 |
| Mar 1985 | 169.00 | 1 |
| Feb 1985 | 169.00 | 1 |
| Dec 1984 | 167.00 | 1 |
| Nov 1984 | 175.00 | 1 |
| Oct 1984 | 162.00 | 1 |
| Sep 1984 | 170.00 | 1 |
| Aug 1984 | 174.00 | 1 |
| Jul 1984 | 166.00 | 1 |
| Jun 1984 | 167.00 | 1 |
| May 1984 | 134.00 | 1 |
| Apr 1984 | 177.00 | 1 |
| Mar 1984 | 147.00 | 1 |
| Feb 1984 | 168.00 | 1 |
| Jan 1984 | 161.00 | 1 |
| Dec 1983 | 167.00 | 1 |
| Nov 1983 | 121.00 | 1 |
| Oct 1983 | 165.00 | 1 |
| Sep 1983 | 164.00 | 1 |
| Aug 1983 | 173.00 | 1 |
| Jul 1983 | 166.00 | 1 |
| Jun 1983 | 175.00 | 1 |
| Apr 1983 | 486.00 | 1 |
| Mar 1983 | 177.00 | 1 |
| Feb 1983 | 174.00 | 1 |
| Jan 1983 | 169.00 | 1 |
| Dec 1982 | 147.00 | 1 |
| Nov 1982 | 169.00 | 1 |
| Oct 1982 | 170.00 | 1 |
| Sep 1982 | 174.00 | 1 |
| Jul 1982 | 164.00 | 1 |
| Jun 1982 | 167.00 | 1 |
| May 1982 | 164.00 | 1 |
| Apr 1982 | 143.00 | 1 |
| Mar 1982 | 172.00 | 1 |
| Feb 1982 | 167.00 | 1 |
| Jan 1982 | 161.00 | 1 |
| Dec 1981 | 166.00 | 1 |
| Nov 1981 | 336.00 | 1 |
| Sep 1981 | 171.00 | 1 |
| Aug 1981 | 328.00 | 1 |
| Jul 1981 | 166.00 | 1 |
| Jun 1981 | 165.00 | 1 |
| May 1981 | 166.00 | 1 |
| Apr 1981 | 171.00 | 1 |
| Mar 1981 | 167.00 | 1 |
| Feb 1981 | 176.00 | 1 |
| Jan 1981 | 172.00 | 1 |
| Dec 1980 | 172.00 | 1 |
| Nov 1980 | 176.00 | 1 |
| Oct 1980 | 174.00 | 1 |
| Sep 1980 | 170.00 | 1 |
| Aug 1980 | 173.00 | 1 |
| Jul 1980 | 169.00 | 1 |
| Jun 1980 | 343.00 | 1 |
| May 1980 | 173.00 | 1 |
| Apr 1980 | 166.00 | 1 |
| Mar 1980 | 341.00 | 1 |
| Feb 1980 | 168.00 | 1 |
| Jan 1980 | 161.00 | 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
3 wells the state's well register assigns to this lease. Every one has a page.
| Well | No. | Operator | Status |
|---|---|---|---|
| PFEIFER, J. J. | 1 | Mai Oil Operations, Inc. | Producing |
| PFEIFER | 1 | Mai Oil Operations, Inc. | Authorized Injection Well |
| PFEIFER | 3 | Mai Oil Operations, Inc. | Producing |
Location
38.862934, -99.237645 · NWNESW Sec 5 T14S R17W
Kansas Geological Survey data, corpus built 2026-09-07. Lease 1001118179. The state’s own record.