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HERL

Lease 1001117721 · Ellis County, Kansas · NENESW Sec 13 T15S R18W · DOR 108268

Oil1955–20266 wells
Operator
Mai Oil Operations, Inc.
Cumulative (state figure)
422,264.19 bbl
First production
1955
Last production
2026
Location (PLSS)
NENESW Sec 13 T15S R18W

Monthly oil production

490 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
135,940.20 bbl
Months filed
490
Most wells in a month
4

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 422,264.19 bbl.

MonthOil (bbl)Wells
Apr 2026159.123
Mar 2026161.323
Feb 202624.003
Jan 2026337.893
Nov 2025167.993
Oct 2025160.833
Sep 2025169.913
Aug 2025158.403
Jul 2025169.983
Jun 2025159.143
May 2025166.863
Apr 2025164.433
Mar 2025161.053
Feb 2025168.833
Jan 2025169.273
Nov 2024160.773
Oct 2024169.103
Sep 2024167.963
Aug 2024160.014
Jul 2024157.034
May 2024174.374
Apr 2024163.224
Mar 2024159.984
Feb 2024161.444
Dec 2023156.564
Nov 2023335.364
Sep 2023167.714
Aug 2023160.684
Jul 2023320.344
Jun 2023154.574
May 2023167.334
Apr 2023165.344
Mar 2023334.164
Jan 2023173.724
Dec 2022160.564
Nov 2022172.824
Oct 2022322.874
Sep 2022166.534
Aug 2022159.644
Jul 2022161.494
Jun 2022161.914
May 2022161.954
Apr 2022173.404
Mar 2022169.594
Feb 2022170.254
Jan 2022159.424
Dec 2021173.714
Nov 2021158.134
Oct 2021340.444
Sep 2021161.774
Aug 2021171.594
Jul 2021165.734
Jun 2021159.834
May 2021162.144
Apr 2021166.874
Mar 2021168.914
Feb 2021163.864
Jan 2021164.064
Dec 2020160.584
Nov 2020170.394
Oct 2020164.804
Aug 2020337.804
Jul 2020161.824
Jun 2020343.854
May 2020166.754
Apr 2020179.494
Mar 2020169.014
Feb 2020346.624
Jan 2020340.404
Dec 2019345.894
Nov 2019171.634
Oct 2019332.544
Sep 2019339.984
Aug 2019353.754
Jul 2019330.594
Jun 2019511.734
May 2019354.144
Apr 2019349.754
Mar 2019362.784
Feb 2019512.974
Jan 2019335.544
Dec 2018523.334
Nov 2018514.544
Oct 2018497.944
Sep 2018524.784
Aug 2018503.143
Jul 2018650.393
Jun 2018504.413
May 2018677.283
Apr 2018670.613
Mar 2018720.103
Feb 2018164.143
Jan 2018162.263
Dec 2017165.043
Nov 2017163.863
Oct 2017162.093
Sep 2017160.443
Jul 2017157.913
Jun 2017163.563
May 201724.613
Apr 2017145.783
Mar 2017151.863
Feb 2017155.603
Jan 2017164.953
Nov 2016148.543
Oct 2016161.273
Sep 2016160.933
Aug 2016165.494
Jul 2016146.754
Jun 2016143.024
Jan 2016159.764
Dec 2015167.874
Oct 2015161.474
Sep 2015158.854
Aug 2015156.914
Jul 2015160.174
Jun 2015156.934
May 2015164.344
Mar 2015155.904
Feb 2015160.144
Jan 2015160.084
Dec 2014157.954
Nov 2014162.694
Oct 2014160.504
Sep 2014153.074
Aug 2014311.674
Jul 2014159.074
May 2014129.064
Apr 2014170.814
Mar 2014336.254
Jan 2014171.524
Dec 2013180.914
Nov 2013161.994
Oct 2013177.514
Sep 2013168.174
Aug 2013320.484
Jul 2013166.234
Jun 2013167.304
May 2013319.844
Apr 2013162.834
Mar 2013175.474
Feb 2013172.814
Jan 2013176.134
Dec 2012163.924
Nov 2012341.914
Oct 2012173.824
Sep 2012155.414
Aug 2012322.344
Jul 2012162.854
Jun 2012160.054
May 2012316.844
Apr 2012168.304
Mar 2012185.384
Feb 2012317.824
Jan 2012161.594
Dec 2011174.184
Nov 2011342.514
Oct 2011172.664
Sep 2011171.794
Aug 2011317.314
Jul 2011171.964
Jun 2011317.934
May 2011161.104
Apr 2011328.674
Mar 2011160.754
Feb 2011341.894
Jan 2011156.834
Dec 2010351.324
Nov 2010171.724
Oct 2010332.744
Sep 2010165.194
Aug 2010326.554
Jul 2010162.064
Jun 2010322.834
May 2010323.774
Apr 2010162.584
Mar 2010164.124
Feb 2010319.944
Jan 2010173.644
Dec 2009176.584
Nov 2009160.714
Oct 2009329.644
Sep 2009159.824
Aug 2009162.964
Jul 2009316.734
Jun 2009337.694
May 2009164.014
Apr 2009331.014
Feb 2009333.314
Jan 2009178.304
Dec 2008182.334
Nov 2008349.974
Oct 2008155.614
Sep 2008352.794
Aug 2008367.804
Jul 2008169.604
Jun 2008341.604
May 2008182.944
Apr 2008371.814
Mar 2008173.514
Feb 2008325.804
Jan 2008173.134
Dec 2007310.064
Nov 2007159.794
Oct 2007345.184
Sep 2007167.574
Aug 2007330.874
Jul 2007333.914
Jun 2007342.894
May 2007171.314
Apr 2007339.974
Mar 2007341.184
Feb 2007156.374
Jan 2007325.914
Dec 2006358.014
Nov 2006163.164
Oct 2006331.464
Sep 2006321.584
Aug 2006161.224
Jul 2006153.384
Jun 2006319.924
May 2006313.594
Apr 2006314.434
Mar 2006329.744
Feb 2006350.034
Jan 2006349.724
Dec 2005351.124
Nov 2005348.904
Oct 2005506.664
Sep 2005323.934
Aug 2005334.544
Jul 2005316.124
Jun 2005502.954
May 2005345.404
Apr 2005368.344
Mar 2005539.284
Feb 2005327.084
Jan 2005342.944
Dec 2004499.424
Nov 2004374.104
Oct 2004331.234
Sep 2004180.184
Aug 2004337.854
Jul 2004317.184
Jun 2004174.404
May 2004328.774
Apr 2004327.714
Mar 2004342.074
Feb 2004332.244
Jan 2004324.554
Dec 2003326.784
Nov 2003343.554
Oct 2003328.884
Sep 2003327.994
Aug 2003322.114
Jul 2003464.834
Jun 2003321.144
May 2003337.934
Apr 2003338.584
Mar 2003332.844
Feb 2003324.584
Jan 2003483.564
Dec 2002325.334
Nov 2002339.364
Oct 2002365.174
Sep 2002492.364
Aug 2002327.134
Jul 2002489.104
Jun 2002326.044
May 2002482.284
Apr 2002327.164
Mar 2002483.624
Feb 2002334.324
Jan 2002503.584
Dec 2001502.624
Nov 2001336.534
Oct 2001498.574
Sep 2001327.324
Aug 2001485.223
Jul 2001487.633
Jun 2001325.133
May 2001512.693
Apr 2001505.173
Mar 2001325.424
Feb 2001320.413
Jan 2001325.023
Dec 2000490.593
Nov 2000326.033
Oct 2000502.933
Sep 2000324.753
Aug 2000488.873
Jul 2000478.643
Jun 2000496.703
May 2000484.113
Apr 2000496.153
Mar 2000487.653
Feb 2000492.613
Jan 2000496.113
Dec 1999322.293
Nov 1999327.843
Oct 1999495.933
Sep 1999320.823
Aug 1999482.264
Jul 1999493.644
Jun 1999312.834
May 1999481.124
Apr 1999164.344
Mar 1999498.754
Feb 1999481.844
Jan 1999324.424
Dec 1998486.064
Nov 1998333.674
Oct 1998488.164
Sep 1998325.594
Aug 1998481.752
Jul 1998485.562
Jun 1998329.902
May 1998492.612
Apr 1998328.142
Mar 1998480.172
Feb 1998498.812
Jan 1998326.332
Dec 1997474.962
Nov 1997498.722
Oct 1997445.832
Sep 1997354.714
Aug 1997352.012
Jul 1997327.272
Jun 1997330.002
May 1997336.172
Apr 1997341.772
Mar 1997329.382
Feb 1997335.822
Jan 1997331.942
Dec 1996325.082
Nov 1996332.402
Oct 1996485.672
Sep 1996325.722
Aug 1996321.142
Jul 1996477.922
Jun 1996318.892
May 1996328.532
Apr 1996505.692
Mar 1996331.442
Feb 1996499.492
Jan 1996336.352
Dec 1995335.004
Nov 1995495.004
Oct 1995335.004
Sep 1995522.004
Aug 1995483.004
Jul 1995492.004
Jun 1995650.004
May 1995506.004
Apr 1995680.004
Mar 1995331.004
Feb 1995492.004
Jan 1995508.004
Dec 1994503.004
Nov 1994492.004
Oct 1994491.004
Sep 1994657.004
Aug 1994670.004
Jul 1994319.004
Jun 1994168.004
May 1994174.004
Apr 1994169.004
Mar 1994175.004
Feb 1994167.004
Jan 1994175.004
Dec 1993170.004
Nov 1993173.004
Oct 1993174.004
Sep 1993330.004
Aug 1993168.004
Jul 1993163.004
Jun 1993172.004
May 1993332.004
Apr 1993169.004
Mar 1993171.004
Feb 1993315.004
Jan 1993164.004
Dec 1992323.004
Nov 1992169.004
Oct 1992317.004
Sep 1992171.004
Aug 1992326.004
Jul 1992339.004
Jun 1992165.004
May 1992333.004
Apr 1992334.004
Mar 1992175.004
Feb 1992338.004
Jan 1992333.004
Dec 1991505.004
Nov 1991170.004
Oct 1991337.004
Sep 1991492.004
Aug 1991331.004
Jul 1991329.004
Jun 1991499.004
May 1991332.004
Apr 1991332.004
Mar 1991491.004
Feb 1991331.004
Jan 1991504.004
Dec 1990350.004
Nov 1990524.004
Oct 1990521.004
Sep 1990174.004
Jul 1990161.004
Jun 1990172.004
Apr 1990175.004
Feb 1990175.004
Dec 1989159.004
Oct 1989175.004
Sep 1989173.004
Jul 1989175.004
Jun 1989175.004
Apr 1989168.004
Mar 1989166.004
Feb 198919.004
Jan 1989150.004
Nov 1988172.004
Sep 1988160.004
Aug 198894.004
Jul 1988168.004
May 1988166.004
Apr 1988207.004
Feb 1988164.004
Dec 1987171.004
Nov 1987168.004
Sep 1987167.004
Aug 1987161.004
Jun 1987336.004
Apr 1987165.004
Feb 1987168.004
Nov 1986170.004
Oct 1986174.004
Sep 1986164.004
Apr 1986171.004
Feb 1986169.004
Jan 1986160.004
Nov 1985125.004
Oct 1985173.004
Sep 1985173.004
Jul 1985125.004
May 1985170.004
Apr 1985342.004
Dec 1984115.004
Nov 1984161.004
Oct 1984171.004
Aug 1984171.004
Jul 1984160.004
Jun 198422.004
May 1984279.004
Feb 1984340.004
Nov 1983277.004
Oct 198364.004
Aug 1983168.004
Jul 1983174.004
May 1983172.004
Apr 1983171.004
Feb 1983336.004
Dec 1982170.004
Oct 1982172.004
Sep 1982157.004
Jul 1982171.004
Apr 1982333.004
Feb 1982335.004
Nov 1981161.004
Oct 1981119.004
Sep 1981176.004
Aug 1981167.004
Jul 1981171.004
May 1981176.004
Apr 1981170.004
Mar 1981175.004
Feb 1981171.004
Jan 1981174.004
Dec 1980166.004
Oct 1980176.004
Sep 1980166.004
Aug 1980171.004
Jul 1980168.004
Jun 1980169.004
May 1980173.004
Apr 1980176.004
Mar 1980170.004
Jan 1980172.004

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

6 wells the state's well register assigns to this lease. Every one has a page.

WellNo.OperatorStatus
HERL1Patterson Energy LLCInactive Well
HERL2Patterson Energy LLCProducing
HERL3Patterson Energy LLCProducing
Herl5Patterson Energy LLCAuthorized Injection Well
HERL4Mai Oil Operations, Inc.Plugged and Abandoned
HERL7Patterson Energy LLCProducing

Location

38.746841, -99.274086 · NENESW Sec 13 T15S R18W

Kansas Geological Survey data, corpus built 2026-09-07. Lease 1001117721. The state’s own record.