MENDOTA, NW. (GRANITE WASH), District 10, Texas

A field is the Railroad Commission's unit of geology and of regulation. Its spacing rule is what decides how many wells an acreage can hold.

Leases
670
with a page here
Operators
30
Value, all time
$3.44 bn
93% of the register's 718
Discovered
1965-01-23
Oil and gas

Our estimate: volumes the operator filed with the Commission, valued at the EIA first-purchase price for that month. It is not a payment anyone received, and it is not a royalty. It sums the 670 leases in this field that have a page here — 93% of the register's 718 — so it understates the field.

Production, 2025

The Railroad Commission's Oil and Gas Annual Report for 2025, its most recent. These are the state's figures for the whole field, not ours.

WellsIn the fieldProducingProduced in 2025Also producedCumulative
Oil221312,255 bbl604,068 mcfcasinghead2,249,764 bblsince discovery
Gas6034259,891,776 mcf164,907 bblcondensate513,869,436 mcfsince 1970

The discovery well's oil measured 45.0° API gravity, perforated at 9,880 ft.

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
OilB2007-12-18467 ft467 ft1604,500 ft
OilO2007-12-18467 ft467 ft803,250 ft
GasB2011-06-27467 ft467 ft1604,500 ft
GasO2011-06-27467 ft467 ft803,250 ft

Commission remarks: WASH) FIELD EFFECTIVE 12/05/17.

Counties

Leases in this field

Every lease here files this field's number with the Commission and has a page on this site.

Showing the 200 largest of 670 leases, by the value we compute. Every one of them is in the sitemap.

LeaseOperatorValue
MCMORDIE 26UNIT PETROLEUM COMPANY$32.2 M
A. WEBB ESTATEUNIT PETROLEUM COMPANY$31.5 M
MAHLER 107UNIT PETROLEUM COMPANY$27.9 M
CAMPBELLMMGL TXPH, LLC$27.6 M
MAHLER "B"UNIT PETROLEUM COMPANY$25.7 M
CAMPBELL 39PRESIDIO PETROLEUM LLC$23.6 M
MAHLERUNIT PETROLEUM COMPANY$23.3 M
MAHLERUNIT PETROLEUM COMPANY$22.8 M
A. WEBB ESTATEUNIT PETROLEUM COMPANY$21.5 M
FIELD STATE 108UNBRIDLED RESOURCES, LLC$21.4 M
CHAMBERS 107CHESAPEAKE OPERATING, L.L.C.$21.3 M
MAHLER 106UNIT PETROLEUM COMPANY$20.8 M
FLOWERS "A" 4UNIT PETROLEUM COMPANY$20.4 M
FLOWERS TRUST "B"MEWBOURNE OIL COMPANY$20.3 M
FLOWERS 84BCE-MACH III LLC$20.2 M
MAHLERMMGL TXPH, LLC$18.3 M
ISAACSUNBRIDLED RESOURCES, LLC$18.2 M
WATERFIELD "C"UNIT PETROLEUM COMPANY$17.4 M
VOLLMERTUNIT PETROLEUM COMPANY$17.0 M
POUNDS 18MMGL TXPH, LLC$16.7 M
LESLIE WEBB ET ALMEWBOURNE OIL COMPANY$16.5 M
FAIRFAXMEWBOURNE OIL COMPANY$16.5 M
ISAACS 207BCE-MACH III LLC$16.4 M
MAHLER 108UNIT PETROLEUM COMPANY$16.2 M
WIGGINS 54BCE-MACH III LLC$15.9 M
ISAACS '212'MEWBOURNE OIL COMPANY$15.5 M
FLOWERS ATECOLOTE ENERGY OPERATING, LLC$15.3 M
ISAACS '205'MEWBOURNE OIL COMPANY$15.2 M
CHAMBERS, FRANK M.MMGL TXPH, LLC$14.9 M
MCMORDIE 87MMGL TXPH, LLC$14.9 M
CHAMBERS, FRANK M.MMGL TXPH, LLC$14.8 M
FLOWERS TRUST "B"MEWBOURNE OIL COMPANY$14.8 M
MCMORDIE 26UNIT PETROLEUM COMPANY$14.2 M
ISAACS "B"UNIT PETROLEUM COMPANY$14.2 M
CHAMBERS 107UNBRIDLED RESOURCES, LLC$14.0 M
WEBBUNIT PETROLEUM COMPANY$13.9 M
FLOWERS 84BCE-MACH III LLC$13.6 M
VOLLMERT "B" SLUNIT PETROLEUM COMPANY$13.4 M
MAHLER 106UNIT PETROLEUM COMPANY$13.2 M
CAMPBELLMMGL TXPH, LLC$13.1 M
WATERFIELD, J.B.MEWBOURNE OIL COMPANY$12.9 M
LESLIE WEBB ET ALMEWBOURNE OIL COMPANY$12.8 M
WEBB "A"UNIT PETROLEUM COMPANY$12.6 M
CHAMBERS, FRANK M. ETAL "C"MMGL TXPH, LLC$12.5 M
WATERFIELD 'B' 100UNIT PETROLEUM COMPANY$12.4 M
B. JARVIS & SONSMEWBOURNE OIL COMPANY$12.3 M
FAIRFAXMEWBOURNE OIL COMPANY$12.2 M
ARTHUR WEBB -B-MEWBOURNE OIL COMPANY$11.8 M
BRAINARD, E.S.F. ET UX -FF-MEWBOURNE OIL COMPANY$11.8 M
VOLLMERTUNIT PETROLEUM COMPANY$11.7 M
FLOWERS TRUST 'B'MEWBOURNE OIL COMPANY$11.7 M
VOLLMERTUNIT PETROLEUM COMPANY$11.6 M
WATERFIELDUNIT PETROLEUM COMPANY$11.5 M
MAHLERUNIT PETROLEUM COMPANY$11.4 M
CHAMBERS, FRANK M. ETAL "C"MEWBOURNE OIL COMPANY$11.3 M
FLOWERS TRUST "A"MEWBOURNE OIL COMPANY$11.1 M
WEBB -A-MEWBOURNE OIL COMPANY$11.0 M
BRAINARDMEWBOURNE OIL COMPANY$10.9 M
ARTHUR WEBB ET AL "S"MEWBOURNE OIL COMPANY$10.9 M
BILLIE JARVIS '220'MEWBOURNE OIL COMPANY$10.8 M
FLOWERS 84BCE-MACH III LLC$10.8 M
PARSELL-PAYNE 161/162 AMEWBOURNE OIL COMPANY$10.7 M
WEBBUNIT PETROLEUM COMPANY$10.6 M
A. WEBB ESTATEUNIT PETROLEUM COMPANY$10.6 M
ISAACSUNBRIDLED RESOURCES, LLC$10.6 M
VOLLMERT "B"UNIT PETROLEUM COMPANY$10.5 M
FLOWERS 'C' 6UNIT PETROLEUM COMPANY$10.4 M
CAMPBELL, J.C. 37BCE-MACH III LLC$10.3 M
WEBB, ARTHUR ET AL "S"MEWBOURNE OIL COMPANY$10.2 M
MOORE, W. H.MEWBOURNE OIL COMPANY$10.1 M
WEBB, LOISMMGL TXPH, LLC$10.1 M
WATERFIELD "C"UNIT PETROLEUM COMPANY$10.1 M
MENDOTA RANCHMEWBOURNE OIL COMPANY$10.0 M
FLOWERS, VERNON M.MEWBOURNE OIL COMPANY$9.9 M
ISAACS "C" 196MMGL TXPH, LLC$9.8 M
WEBB, LESLIE ET AL "R"MEWBOURNE OIL COMPANY$9.8 M
CHAMBERS, F.M.UNIT PETROLEUM COMPANY$9.7 M
WATERFIELD "A"UNIT PETROLEUM COMPANY$9.7 M
FRANK M. CHAMBERS ET AL 'A'MEWBOURNE OIL COMPANY$9.6 M
WEBB, LESLIE ET AL "R"MEWBOURNE OIL COMPANY$9.6 M
FLOWERS CMMGL TXPH, LLC$9.4 M
CHAMBERS, J. S.MMGL TXPH, LLC$9.4 M
VOLLMERT, J. C.UNIT PETROLEUM COMPANY$9.3 M
PABLOMMGL TXPH, LLC$9.3 M
CHAMBERS, F.M.UNIT PETROLEUM COMPANY$9.3 M
VOLLMERT 'B'UNIT PETROLEUM COMPANY$9.2 M
CAMPBELLMMGL TXPH, LLC$9.1 M
VOLLMERT TRUSTBRACKEN OPERATING, L.L.C.$9.1 M
WEBB, LESLIE ET AL 'R'MEWBOURNE OIL COMPANY$8.9 M
FLOWERS TRUSTMEWBOURNE OIL COMPANY$8.8 M
WEBB, LESLIE ET ALMEWBOURNE OIL COMPANY$8.8 M
WATERFIELD 'C'UNIT PETROLEUM COMPANY$8.8 M
CAMPBELLMMGL TXPH, LLC$8.8 M
ISSAAC 'C'UNIT PETROLEUM COMPANY$8.7 M
WATERFIELD "C"UNIT PETROLEUM COMPANY$8.6 M
WATERFIELD, J.B.UNIT PETROLEUM COMPANY$8.6 M
EARP 58MMGL TXPH, LLC$8.6 M
WATERFIELD 'C'UNIT PETROLEUM COMPANY$8.6 M
WEBB, LESLIE ET AL "R"MEWBOURNE OIL COMPANY$8.6 M
FLOWERS BMMGL TXPH, LLC$8.6 M
ISAACSMMGL TXPH, LLC$8.5 M
WEBB, ARTHUR ET AL "S"MEWBOURNE OIL COMPANY$8.5 M
FLOWERS TRUSTMEWBOURNE OIL COMPANY$8.4 M
FLOWERS DMMGL TXPH, LLC$8.4 M
VOLLMERT "C"UNIT PETROLEUM COMPANY$8.3 M
VOLLMERT "C"UNIT PETROLEUM COMPANY$8.3 M
EARP 58BCE-MACH III LLC$8.3 M
ISAACS 210MEWBOURNE OIL COMPANY$8.3 M
CAMPBELL 53BCE-MACH III LLC$8.3 M
ISAACS, JOHN ET AL "G"MEWBOURNE OIL COMPANY$8.2 M
VOLLMERT "C"UNIT PETROLEUM COMPANY$8.2 M
VOLLMERT "B"UNIT PETROLEUM COMPANY$8.2 M
ARTHUR WEBB ET AL "S"MEWBOURNE OIL COMPANY$8.1 M
FLOWERS DMMGL TXPH, LLC$8.1 M
EARP 60BCE-MACH III LLC$8.1 M
ISAACS '212'MEWBOURNE OIL COMPANY$8.0 M
CAMPBELLMMGL TXPH, LLC$8.0 M
MAHLER "A"UNIT PETROLEUM COMPANY$8.0 M
WEBB 187UNIT PETROLEUM COMPANY$8.0 M
LONG-CHAMBERS 173/174 AMEWBOURNE OIL COMPANY$8.0 M
FLOWERS 61BCE-MACH III LLC$8.0 M
WATERFIELD 'A'MMGL TXPH, LLC$8.0 M
FLOWERS TRUST "B"MEWBOURNE OIL COMPANY$7.9 M
WEBBUNIT PETROLEUM COMPANY$7.9 M
ABRAHAMUNBRIDLED RESOURCES, LLC$7.9 M
ISAACS 1BCE-MACH III LLC$7.9 M
VOLLMERT TRUST SLBRACKEN OPERATING, L.L.C.$7.8 M
FLOWERS-LISTON 62MMGL TXPH, LLC$7.8 M
VOLLMERT "C"UNIT PETROLEUM COMPANY$7.8 M
ISAACS 208MEWBOURNE OIL COMPANY$7.8 M
EARP 60BCE-MACH III LLC$7.8 M
WATERFIELD 'B' 100UNIT PETROLEUM COMPANY$7.7 M
ABRAHAMUNBRIDLED RESOURCES, LLC$7.7 M
MENDOTA RANCH 63MMGL TXPH, LLC$7.7 M
MENDOTA 14 SEUNBRIDLED RESOURCES, LLC$7.7 M
WATERFIELD, J.B.MEWBOURNE OIL COMPANY$7.6 M
CAMPBELLMMGL TXPH, LLC$7.6 M
EARP 60BCE-MACH III LLC$7.6 M
ABRAHAM NWCHESAPEAKE OPERATING, INC.$7.6 M
FLOWERS BMMGL TXPH, LLC$7.6 M
FLOWERS 61BCE-MACH III LLC$7.6 M
ISAACS 1BCE-MACH III LLC$7.6 M
VOLLMERT, J. C.MEWBOURNE OIL COMPANY$7.5 M
MAHLER 107MEWBOURNE OIL COMPANY$7.5 M
FLOWERS AMMGL TXPH, LLC$7.5 M
ABRAHAM NWUNBRIDLED RESOURCES, LLC$7.4 M
ISAACS "C"MMGL TXPH, LLC$7.3 M
CAMPBELL 53BCE-MACH III LLC$7.3 M
MENDOTA RANCH 15MMGL TXPH, LLC$7.3 M
MOORE, W. H.MEWBOURNE OIL COMPANY$7.3 M
FLOWERS TRUST "A"MMGL TXPH, LLC$7.3 M
EARP 59BCE-MACH III LLC$7.2 M
WEBB 194BCE-MACH III LLC$7.2 M
FLOWERS CMMGL TXPH, LLC$7.2 M
MENDOTA RANCH 34MMGL TXPH, LLC$7.2 M
CAMPBELL RANCH 10MMGL TXPH, LLC$7.2 M
WATERFIELD 112UNIT PETROLEUM COMPANY$7.1 M
FLOWERS BMMGL TXPH, LLC$7.1 M
MENDOTA RANCH 63MMGL TXPH, LLC$7.0 M
POUNDSMMGL TXPH, LLC$7.0 M
CAMPBELL RANCH 11MMGL TXPH, LLC$7.0 M
FLOWERS BMMGL TXPH, LLC$7.0 M
FLOWERS AMMGL TXPH, LLC$7.0 M
MENDOTA RANCH 36BRACKEN OPERATING, L.L.C.$6.9 M
FLOWERS 61BCE-MACH III LLC$6.9 M
MENDOTA RANCHMEWBOURNE OIL COMPANY$6.9 M
WATERFIELD 'A'UNIT PETROLEUM COMPANY$6.9 M
FLOWERS 61BCE-MACH III LLC$6.8 M
MOORE, W. H.MEWBOURNE OIL COMPANY$6.8 M
WEBB, LESLIE ET AL "R"MEWBOURNE OIL COMPANY$6.8 M
KAUFMAN 81MEWBOURNE OIL COMPANY$6.6 M
CAMPBELL 53BCE-MACH III LLC$6.6 M
FLOWERS, VERNON M.MMGL TXPH, LLC$6.6 M
JOHN ISAACS ET AL "G"MEWBOURNE OIL COMPANY$6.6 M
POUNDSMMGL TXPH, LLC$6.6 M
JARVIS '217'MEWBOURNE OIL COMPANY$6.6 M
WIGGINS 9MMGL TXPH, LLC$6.5 M
MENDOTA RANCHMEWBOURNE OIL COMPANY$6.5 M
WATERFIELD SLUNIT PETROLEUM COMPANY$6.5 M
ISAACSMMGL TXPH, LLC$6.5 M
ABRAHAMUNBRIDLED RESOURCES, LLC$6.4 M
MOORE, W. H.BCE-MACH III LLC$6.4 M
VOLLMERT "C"UNIT PETROLEUM COMPANY$6.4 M
MOORE, W. H.MEWBOURNE OIL COMPANY$6.4 M
CHAMBERS, FRANK M. ETAL "C"MEWBOURNE OIL COMPANY$6.4 M
MENDOTA RANCH 63MMGL TXPH, LLC$6.4 M
FRANK M. CHAMBERS ET AL "A"MEWBOURNE OIL COMPANY$6.3 M
JOHN ISAACS ET AL 'G'MEWBOURNE OIL COMPANY$6.3 M
FLOWERS TRUSTMMGL TXPH, LLC$6.3 M
PABLOMMGL TXPH, LLC$6.3 M
FLOWERS TRUST "A"MMGL TXPH, LLC$6.3 M
MENDOTA 15-NEUNBRIDLED RESOURCES, LLC$6.2 M
FLOWERS TRUST "B"MEWBOURNE OIL COMPANY$6.2 M
FLOWERS 61BCE-MACH III LLC$6.2 M
PABLOMMGL TXPH, LLC$6.2 M
MENDOTA 15-NWUNBRIDLED RESOURCES, LLC$6.1 M
ARTHUR WEBB ET AL "T"MEWBOURNE OIL COMPANY$6.1 M
FLOWERS-LISTON 62MMGL TXPH, LLC$6.1 M
MAHLERUNIT PETROLEUM COMPANY$6.0 M
VOLLMERT TRUSTBRACKEN OPERATING, L.L.C.$6.0 M

Field number 60462500, from the Railroad Commission's field register. The register's own index resolves 718 leases and 729 wells to this field by name, over every lease in Texas rather than only those with a page here. It resolves a lease by NAME and refuses an ambiguous one, so it counts nothing for a field that shares its name with another — which is why the lease count above comes from the field number instead.