Kansas
Comanche County leases
1,563 oil and gas leases on record in Comanche County, Kansas · page 1 of 8
Leases in the county
1,563
On this page
200
Leases
| Lease | Operator | Product | Years | Cumulative | Wells |
|---|---|---|---|---|---|
| A. M. DALE 1 | OXY USA Inc. | Gas | 1968–1986 | 1,144,156 MCF | — |
| A. M. DALE 1 | OXY USA Inc. | Gas | 1968 | 136,043 MCF | 1 |
| ACRES 1 | NEC Operating - Kansas, LLC | Oil | 1997–2004 | 6,417.50 bbl | 4 |
| ACRES 1 | Rockhound Petroleum, LLC | Gas | 1997–2003 | 207,564 MCF | 2 |
| ACRES 1 | Daystar Petroleum, Inc. | Gas | 1999–2006 | 975,304 MCF | 3 |
| ACRES 1 | Daystar Petroleum, Inc. | Oil | 2001–2004 | 489.70 bbl | 2 |
| ACRES 1 TWIN | NEC Operating - Kansas, LLC | Gas | 2003–2026 | 157,597 MCF | 1 |
| ACRES 2 | Dreiling Exploration LLC | Gas | 1997–2008 | 38,748 MCF | 1 |
| ACRES 2 | CLX Oil & Gas, LLC | Gas | 2001–2004 | 2,013 MCF | 1 |
| ACRES 21-5 | NEC Operating - Kansas, LLC | Gas | 1998–2015 | 250,390 MCF | 1 |
| ACRES 21-5 | NEC Operating - Kansas, LLC | Oil | 1999–2026 | 81,942.41 bbl | 1 |
| ACRES 3 | NEC Operating - Kansas, LLC | Gas | 1999–2015 | 292,794 MCF | 2 |
| ACRES 3 | Daystar Petroleum, Inc. | Gas | 2000–2008 | 607,753 MCF | 3 |
| ANCHOR BAY STAT | Sidwell Oil & Gas, Inc. | Gas | 1997–2000 | 46,997 MCF | — |
| ARLIE 1-1 | L. D. Drilling, Inc. | Oil | 2000–2017 | 50,102.62 bbl | 3 |
| ARLIE 1-1 | L. D. Drilling, Inc. | Gas | 2001–2017 | 443,067 MCF | 3 |
| Alberta Marie SWD 1 | SandRidge Exploration and Production LLC | Oil | 2013–2017 | 704.99 bbl | — |
| Alton 1-3 | BEREXCO LLC | Oil | 2010–2026 | 37,617.40 bbl | 1 |
| Amelia Grace 1-2H | SandRidge Exploration and Production LLC | Gas | 2012–2014 | 8,434 MCF | 1 |
| Amelia Grace 1-2H | SandRidge Exploration and Production LLC | Oil | 2012–2016 | 1,442.18 bbl | 1 |
| Anita 1-12H | Mike Kelso Oil, Inc. | Oil | 2012–2025 | 15,836.21 bbl | 1 |
| Anita 1-12H | Mike Kelso Oil, Inc. | Gas | 2012–2026 | 754,614 MCF | 1 |
| Anita 1-13H | Mike Kelso Oil, Inc. | Gas | 2013–2026 | 721,578 MCF | 1 |
| Anita 1-13H | Mike Kelso Oil, Inc. | Oil | 2013–2025 | 18,880.04 bbl | 1 |
| Anita 2-12H | Mike Kelso Oil, Inc. | Oil | 2013–2024 | 13,888.15 bbl | 1 |
| Anita 2-12H | Mike Kelso Oil, Inc. | Gas | 2013–2026 | 844,196 MCF | 1 |
| Anita 2-13H | Mike Kelso Oil, Inc. | Oil | 2014–2023 | 17,725.98 bbl | 1 |
| Anita 2-13H | Mike Kelso Oil, Inc. | Gas | 2014–2026 | 513,906 MCF | 1 |
| Anna 24-3 | Redland Resources, LLC | Oil | 2009–2026 | 95,484.91 bbl | 1 |
| Anna 24-3 | Redland Resources, LLC | Gas | 2009–2026 | 129,410 MCF | 1 |
| Ariana 1-18H | Mike Kelso Oil, Inc. | Gas | 2013–2026 | 919,514 MCF | 1 |
| Ariana 1-18H | Mike Kelso Oil, Inc. | Oil | 2013–2026 | 22,570.72 bbl | 1 |
| Ariana 1-7H | Mike Kelso Oil, Inc. | Gas | 2013–2026 | 1,414,782 MCF | 1 |
| Ariana 1-7H | Mike Kelso Oil, Inc. | Oil | 2013–2025 | 10,952.44 bbl | 1 |
| Arlie 18-1 | Mike Kelso Oil, Inc. | Oil | 2000–2016 | 24,870.91 bbl | 1 |
| Arlie 18-2 | Lasso Energy LLC | Oil | 2011–2024 | 1,411.20 bbl | 1 |
| Arlie 18-2 | Comanche Resources Company | Gas | 2011–2013 | 12,411 MCF | 1 |
| B. L. PARKS 1 | UNION OIL COMPAN | Gas | 1968–1980 | 1,856,426 MCF | — |
| B. L. PARKS 1 | UNION OIL COMPAN | Gas | 1968 | 3,048,759 MCF | — |
| B. L. PARKS 1 | UNION OIL COMPAN | Gas | 1968–1969 | 315,000 MCF | — |
| B. L. PARKS 1 | UNION OIL COMPAN | Gas | 1968 | 124,030 MCF | — |
| B. L. PARKS 1 (BRYANT 2) | UNION OIL COMPAN | Oil | 1962–1979 | 61,948 bbl | 1 |
| BAKER 1 | AGV Corp. | Oil | 1984–2026 | 68,403.59 bbl | 1 |
| BAKER 1 | Iuka-Carmi Development LLC | Oil | 1989–2013 | 2,347.84 bbl | 1 |
| BAKER 1 | Graves Drilling Co., Inc. | Gas | 1989–2026 | 385,283 MCF | 1 |
| BAKER 1 | Halliburton Oil Producing Co. | Oil | 1970–1997 | 18,284 bbl | 1 |
| BAKER 1 | UNKNOWN | Gas | 1972 | 42,193 MCF | 1 |
| BAKER 1-30 | American Warrior, Inc. | Gas | 2005–2025 | 98,268 MCF | 1 |
| BAKER 1-34 | Liberty Oper & Compl, Inc | Oil | 1982–1992 | 12,062 bbl | 1 |
| BAKER 1-34 | K R M PETROLEUM | Gas | 1982–1986 | 32,935 MCF | 1 |
| BAKER 2 | Coral Coast Petroleum, L.C. | Gas | 1999–2015 | 226,874 MCF | 1 |
| BAKER R | PATRICK R J OPER | Gas | 1981–1985 | 119,407 MCF | — |
| BAKER RALPH | R.J. Patrick Operating Company | Oil | 1985–1991 | 1,991 bbl | — |
| BAKER RALPH 1 | Mike Kelso Oil, Inc. | Oil | 1980–2026 | 23,828 bbl | 1 |
| BAKER SMITH #1- | James B. Read Operating, Inc. | — | — | — | 1 |
| BAKER SMITH 2-19 | James B. Read Operating, Inc. | Gas | 2002–2020 | 185,359 MCF | 2 |
| BAKER TRUST | Norstar Petroleum, Inc. | Oil | 1981–1995 | 21,775 bbl | 2 |
| BAKER TRUST 1 | R.J. Patrick Operating Company | Gas | 1982–1996 | 401,793 MCF | 1 |
| BAKER TRUST 2 | R.J. Patrick Operating Company | Gas | 1986–1994 | 7,778 MCF | 1 |
| BAKER-SMITH 1-19 | James B. Read Operating, Inc. | Oil | 1997–2020 | 7,859.76 bbl | 2 |
| BAKER-SMITH 2-19 | James B. Read Operating, Inc. | Oil | 2002–2020 | 4,719.37 bbl | 1 |
| BALLET 11-3 | Redland Resources, LLC | Oil | 2002–2026 | 14,639.69 bbl | 1 |
| BALLET 11-3 | Redland Resources, LLC | Gas | 2002–2026 | 36,134 MCF | 1 |
| BALLET RANCH 1 | Beren Corporation | Gas | 1977–2019 | 277,251 MCF | 2 |
| BALLET RANCH 2 | Beren Corporation | Gas | 1977–2020 | 538,351 MCF | 1 |
| BALLET RANCH 3 | Beren Corporation | Gas | 1977–2026 | 947,861 MCF | 3 |
| BALLET RANCH 3 | BEREN CORPORATIO | Oil | 1977–1980 | 842 bbl | 2 |
| BALLET RANCH 4 | BEREN CORPORATIO | Oil | 1981–1991 | 321 bbl | 4 |
| BALLET RANCH 4 | Beren Corporation | Gas | 1977–2026 | 909,287 MCF | 1 |
| BALLET RANCH 5 | BEREN CORPORATIO | Gas | 1977–1986 | 117,950 MCF | 1 |
| BALLET RANCH 7 | Clark Exploration Co. | Gas | 1968–1996 | 860,833 MCF | 1 |
| BARNES 1-12 | American Warrior, Inc. | Gas | 2000–2025 | 440,650 MCF | 1 |
| BARNES 1-30 | American Warrior, Inc. | Oil | 1999–2004 | 5,217.83 bbl | 1 |
| BARNES 1-30 | American Warrior, Inc. | Gas | 1999–2004 | 2,771 MCF | 1 |
| BASNETT 1 | American Warrior, Inc. | Gas | 2000–2004 | 5,646 MCF | 1 |
| BAYNE 1-5 | Trans Pacific Oil Corporation | Oil | 1980–2015 | 117,417.47 bbl | 1 |
| BAYNE 1-5 | APEX Resources LLC | Gas | 1987–2014 | 121,905 MCF | 2 |
| BAYNE 3-5 | Trans Pacific Oil Corporation | Gas | 1987–2013 | 2,414 MCF | — |
| BAYNE 4-5 | APEX Resources LLC | Gas | 1987–2014 | 6,848 MCF | 1 |
| BEALS HAZEL | UNION OIL COMPAN | Gas | 1968 | 578,901 MCF | — |
| BEELEY 1 | MARATHON OIL COM | Oil | 1987–1989 | 675 bbl | 1 |
| BEELEY 1 | MARATHON OIL COM | Gas | 1986–1989 | 51,466 MCF | 1 |
| BEELEY 1 | NEC Operating - Kansas, LLC | Gas | 1999–2022 | 369,544 MCF | 2 |
| BEELEY 1 | Dreiling Exploration LLC | Oil | 2002–2014 | 21,367.57 bbl | 2 |
| BEELEY 1-7 | American Warrior, Inc. | Gas | 2003–2020 | 187,843 MCF | 1 |
| BEELEY TRUST B1 | Woolsey Operating Company, LLC | Gas | 2008–2010 | 10,131 MCF | 1 |
| BEELEY TRUST B1 | Woolsey Operating Company, LLC | Oil | 2009–2010 | 1,448.51 bbl | 1 |
| BELCHER 'A' | Castelli Exploration, Inc. | Oil | 1977–1989 | 40,614 bbl | 2 |
| BELCHER 'A' 1 | Marathon Oil Company | Gas | 1987–1994 | 211,274 MCF | 1 |
| BENDER 1 | SandRidge Exploration and Production LLC | Gas | 2001–2016 | 137,009 MCF | 1 |
| BENDER 1 | SandRidge Exploration and Production LLC | Oil | 2002–2013 | 592.31 bbl | 1 |
| BERGNER 1-16 | Imperial Oil Properties, Inc. | Gas | 1997–2000 | 72,630 MCF | 1 |
| BERGNER-ACRES-C | Imperial Oil Properties, Inc. | Gas | 2000–2001 | 59,944 MCF | — |
| BERGNER-ACRES-T | Rockhound Petroleum, LLC | Gas | 2000–2014 | 234,027 MCF | 1 |
| BERNICE HERD 3 | Thoroughbred Associates L.L.C. | Gas | 2002–2026 | 469,109 MCF | 1 |
| BETZER 1-23 | Samson Resources Company | Oil | 1969–2009 | 26,208.82 bbl | 1 |
| BETZER 1-23 | Dominion Oklahoma Texas Expl & Prod, Inc. | Gas | 1969–2009 | 3,808,469 MCF | 1 |
| BEYLER 'A' 1 | Mike Kelso Oil, Inc. | Gas | 1999–2025 | 472,948 MCF | 1 |
| BEYLER 1-11 | K R M PETROLEUM | Oil | 1980–1983 | 3,616 bbl | 1 |
| BEYLER 1-A | Mike Kelso Oil, Inc. | Oil | 2022–2025 | 248.83 bbl | 1 |
| BEYLER 2-11 | Petroglyph Operating Company | Oil | 1982–1988 | 11,230 bbl | 1 |
| BEYLER 2-11 | Petroglyph Operating Company | Gas | 1982–1986 | 47,128 MCF | 1 |
| BIDDLE 2 | Castelli Exploration, Inc. | Gas | 1983–2013 | 334,231 MCF | 1 |
| BIRD #1-29 | American Warrior, Inc. | — | — | — | — |
| BIRD 'A' 1-31 | Corsair Energy, LC | Oil | 2004 | 1,859.29 bbl | — |
| BIRD 'A' 1-31 | Corsair Energy, LC | Oil | 2004 | 24.91 bbl | — |
| BIRD 'A' 1-31 | SandRidge Exploration and Production LLC | Oil | 2004–2015 | 9,830.98 bbl | 1 |
| BIRD 'N' 1 | Pickrell Drilling Company Inc | Oil | 2002–2003 | 6,314.24 bbl | 1 |
| BIRD 'N' 1 | Thoroughbred Associates L.L.C. | Gas | 2002–2007 | 7,252 MCF | — |
| BIRD 1 | Thoroughbred Associates L.L.C. | Gas | 1998–2026 | 6,622,509 MCF | 1 |
| BIRD 1-28 | American Warrior, Inc. | Gas | 1999–2024 | 132,472 MCF | 1 |
| BIRD 2-28 | American Warrior, Inc. | Oil | 2002–2007 | 298.59 bbl | 1 |
| BIRD 2-28 | American Warrior, Inc. | Gas | 2002–2026 | 384,307 MCF | 1 |
| BIRD 3-10 | SandRidge Exploration and Production LLC | Gas | 1999–2014 | 109,757 MCF | 1 |
| BIRD 3-10 | SandRidge Exploration and Production LLC | Oil | 1999–2011 | 3,928.32 bbl | 1 |
| BIRD 3-28 | American Warrior, Inc. | Oil | 2003–2026 | 176,684.32 bbl | 1 |
| BIRD 3-28 | American Warrior, Inc. | Gas | 2003–2022 | 49,384 MCF | 1 |
| BIRD 4 | American Warrior, Inc. | Gas | 2004–2026 | 652,737 MCF | 1 |
| BIRD 4-28 | American Warrior, Inc. | Oil | 2004–2019 | 1,410.29 bbl | 1 |
| BIRD N 2 | Thoroughbred Associates L.L.C. | Gas | 2002 | 35,095 MCF | 1 |
| BIRD RANCH | Woolsey Operating Company, LLC | — | — | — | 1 |
| BIRD RANCH 1 | Woolsey Operating Company, LLC | Gas | 2002–2016 | 320,356 MCF | 1 |
| BISHOP PIPELINE | Quintana Minerals Corporation | Gas | 1988–2001 | 3,569,405 MCF | — |
| BLACKSHIRTS #1 | Thoroughbred Associates L.L.C. | Gas | 2002–2011 | 165,634 MCF | 1 |
| BLACKSHIRTS 1 | Thoroughbred Associates L.L.C. | Oil | 2001–2017 | 98,091.62 bbl | — |
| BOBWHITE 15-1 | Samuel Gary Jr. & Associates, Inc. | Oil | 1994–1997 | 16,538.34 bbl | 1 |
| BOISSEAU | BIRD ENERGY INCO | Oil | 1987–1989 | 476 bbl | 2 |
| BOISSEAU 'A' 1 | H & B Petroleum Corp. | Oil | 1969–2006 | 4,694.07 bbl | 1 |
| BOISSEAU 'A' 1 | H & B Petroleum Corp. | Gas | 1969–2005 | 3,714,555 MCF | 1 |
| BOISSEAU 1 | Chesapeake Operating, LLC | Oil | 1976–2014 | 37,683.99 bbl | 1 |
| BOISSEAU 1-11 | Bird Energy, Inc. | Gas | 1987–1993 | 348,642 MCF | 1 |
| BOISSEAU 1-22 | Woolsey Operating Company, LLC | Oil | 1969–2005 | 23,323.31 bbl | 2 |
| BOISSEAU 1-22 | PETROLEUM INCORP | Gas | 1969–1987 | 1,086,145 MCF | 1 |
| BOISSEAU 1WD | Hummon Corporation | Oil | 1985–1992 | 2,311 bbl | 1 |
| BOOTH | BANKS OIL - LEE | Gas | 1978–1991 | 860,970 MCF | 1 |
| BOOTH | BANKS OIL - LEE | Oil | 1979–1981 | 320 bbl | — |
| BOOTH | Banks Oil Co | — | — | — | — |
| BOOTH 'A' 1 | Siroky Oil Management | Gas | 1979–2010 | 217,788 MCF | 2 |
| BOOTH 1-13 | Edison Operating Company LLC | Oil | 1999–2026 | 14,605.76 bbl | 2 |
| BOOTH 1-13 | Edison Operating Company LLC | Gas | 2000–2026 | 291,280 MCF | 2 |
| BOOTH 1-23 | Midco Exploration, Inc. | Oil | 1990–2010 | 1,372.06 bbl | 2 |
| BOOTH 1-23 | Midco Exploration, Inc. | Gas | 1987–2024 | 419,018 MCF | 2 |
| BOOTH A-1 | Banks Oil Co | — | — | — | — |
| BOSLEY 1-9 | GRAHAM-MICHAELIS | Gas | 1970–1978 | 382,145 MCF | 1 |
| BOSLEY 1-9 & 2-9 | Hayes Oil & Gas LLC | Oil | 1970–2026 | 120,132.42 bbl | 2 |
| BOX RANCH 'B' 1 | KIRKMAN W L INCO | Oil | 1982–1989 | 838 bbl | 1 |
| BOX RANCH 'B' 1 | Roberts and Murphy, Inc. | Gas | 1982–1991 | 593,474 MCF | 1 |
| BOX RANCH 'B' 2X | Roberts and Murphy, Inc. | Oil | 1988–2000 | 2,182.89 bbl | 2 |
| BOX RANCH 'B' 2X | Roberts and Murphy, Inc. | Gas | 1988–2001 | 28,700 MCF | 2 |
| BOX RANCH 1 | Mid Con Energy Corporation | Oil | 1978–2003 | 4,667.28 bbl | 1 |
| BOX RANCH 1 | Mid-Continent Energy Corp. | Gas | 1978–2014 | 3,363,111 MCF | 1 |
| BOX RANCH 1-11 | SAAW Operating LLC | Oil | 1988–2023 | 1,390.89 bbl | 1 |
| BOX RANCH 1-11 | SAAW Operating LLC | Gas | 1987–2026 | 1,046,506 MCF | 1 |
| BOX RANCH 1-13 | ROBERTS & MURPHY | Gas | 1988–1990 | 4,014 MCF | 1 |
| BOX RANCH 1-14 | ROBERTS & MURPHY | Oil | 1988–1991 | 2,548 bbl | 1 |
| BOX RANCH 1-14 | ROBERTS & MURPHY | Gas | 1988–1991 | 23,086 MCF | 1 |
| BOX RANCH 1-2 | Roberts and Murphy, Inc. | Oil | 1988–1989 | 28,396 bbl | 1 |
| BOX RANCH 1-2 | Roberts and Murphy, Inc. | Gas | 1988–2008 | 3,240,172 MCF | 1 |
| BOX RANCH 2-11 | ROBERTS & MURPHY | Oil | 1988–1989 | 536 bbl | 1 |
| BOX RANCH 2-11 | ROBERTS & MURPHY | Gas | 1988–1990 | 480,363 MCF | 1 |
| BOX RANCH 2-2 | ROBERTS & MURPHY | Oil | 1988–1992 | 74,077 bbl | 1 |
| BOX RANCH 2-3 | Quail Oil & Gas, LC | Oil | 1989–2025 | 308,854.23 bbl | 1 |
| BOX RANCH 3-2 | Roberts and Murphy, Inc. | Oil | 1988–1995 | 55,759 bbl | 1 |
| BOX RANCH 3-3 | Roberts and Murphy, Inc. | Oil | 1989–1997 | 122,426.78 bbl | 1 |
| BOX RANCH 4-3 | Roberts and Murphy, Inc. | Oil | 1990–1997 | 18,644.28 bbl | 1 |
| BOX RANCH 5-3 | Quail Oil & Gas, LC | Oil | 1991–2023 | 52,590.86 bbl | 2 |
| BOX RANCH 6-3 | Quail Oil & Gas, LC | Oil | 1992–2026 | 165,785.36 bbl | 1 |
| BRASS 1-6 | American Warrior, Inc. | Oil | 2002–2008 | 806.76 bbl | 1 |
| BRASS 14-12 | ARES Energy, LTD | Oil | 2015 | 4.49 bbl | 1 |
| BRASS 34-15 | Edison Operating Company LLC | Gas | 1997–2026 | 426,293 MCF | 2 |
| BRASS 34-15 | Samuel Gary Jr. & Associates, Inc. | Oil | 1998–2018 | 2,701.71 bbl | 2 |
| BRASS RANCH #1 | American Warrior, Inc. | — | — | — | — |
| BREMER 1-2 | Edison Operating Company LLC | Gas | 2007–2026 | 259,325 MCF | 1 |
| BREMER 1-2 | ARES Energy, LTD | Oil | 2008–2015 | 204.66 bbl | 1 |
| BREMER 1-2 | ARES Energy, LTD | — | — | — | — |
| BREMER 1-33 | American Warrior, Inc. | Gas | 2001–2024 | 201,584 MCF | 1 |
| BREMER 1-33 | American Warrior, Inc. | — | — | — | — |
| BREMER 1-8 | Edison Operating Company LLC | Gas | 2005–2026 | 249,732 MCF | 1 |
| BREMER 1-8 | Samuel Gary Jr. & Associates, Inc. | Oil | 2005–2015 | 242.76 bbl | 1 |
| BROWN 1-12 | Pelican Hill Oil & Gas, Inc. | Gas | 2000–2001 | 4,627 MCF | 1 |
| BROWN_1-12 | American Warrior, Inc. | — | — | — | — |
| BRYANT | Bear Petroleum, LLC | Gas | 1986–2019 | 1,028,695 MCF | 3 |
| BRYANT 3 | White Eagle Resources Corp. | Gas | 1987–1993 | 183,413 MCF | 1 |
| BRYANT 4 | White Eagle Resources Corp. | Gas | 1991–1993 | 34,158 MCF | — |
| BUNNELL 1-15 | Edison Operating Company LLC | Gas | 2000–2026 | 272,196 MCF | 1 |
| BUNNELL 1-15 | Samuel Gary Jr. & Associates, Inc. | Oil | 2001–2014 | 308.62 bbl | 1 |
| BUNNELL 1-17 | American Warrior, Inc. | Gas | 2007–2026 | 381,738 MCF | 1 |
| BUNNELL 1-17 | American Warrior, Inc. | — | — | — | — |
| BUNNELL 15-2 | Edison Operating Company LLC | Gas | 2008–2018 | 175,529 MCF | 1 |
| BUNNELL 15-2 | ARES Energy, LTD | Oil | 2008–2014 | 202.28 bbl | 1 |
| BUNNELL 15-6 | Edison Operating Company LLC | Gas | 2008–2024 | 322,916 MCF | 1 |
| BUNNELL 15-6 | Edison Operating Company LLC | Oil | 2009–2014 | 324.25 bbl | 1 |
| BUNNELL 2-29 | Hummon Corporation | Gas | 2007–2014 | 13,985 MCF | 2 |
| BUNNELL 2-29 | Hummon Corporation | Oil | 2007–2013 | 1,509.05 bbl | 1 |
| BURKHAL | Dixon Energy, Inc. | — | — | — | — |
| BURKHALL 'A' 1 | Edison Operating Company LLC | Oil | 1974–2026 | 115,303.36 bbl | 2 |
| BURKHALL 'A' 1 | ANADARKO PETROLE | Gas | 1981–1995 | 287,860 MCF | — |
| BURKHALL 1 | MORRISON-DIXON O | Oil | 1989–1990 | 984 bbl | 1 |
| BURKHALL 2 | Pratt Well Service, Inc. | Oil | 1991–2009 | 8,659.30 bbl | 3 |
| BURT 1 | BANKS OIL - LEE | Gas | 1976–1986 | 9,171 MCF | 1 |
Cumulative production as the Kansas Geological Survey files it, over the whole life of the lease. The monthly series on each lease page begins in 1980, so for a lease that started earlier the two are not the same figure.