MILLS RANCH (GRANITE WASH CONS.), 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

257

with a page here

Operators

Value, all time

$4.14 bn

94% of the register's 274

Discovered

2010-02-23

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 257 leases in this field that have a page here — 94% of the register's 274 — 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.

Wells	In the field	Producing	Produced in 2025	Also produced	Cumulative
Oil	208	164	300,274 bbl	3,868,617 mcfcasinghead	26,927,240 bblsince discovery
Gas	120	101	2,745,885 mcf	141,908 bblcondensate	137,976,228 mcfsince 1970

The discovery well's oil measured 40.0° API gravity, perforated at 11,512 ft.

Spacing rule

What the Commission requires of a well on this field.

Wells	Rule	Effective	From the lease line	Acres per unit	Max diagonal
Gas	B	2013-07-09	467 ft	160	4,500 ft
Gas	O	2013-07-09	467 ft	20	1,500 ft
Oil	B	2013-07-09	467 ft	160	4,500 ft
Oil	O	2013-07-09	467 ft	20	1,500 ft

Commission remarks: DESIGNATED AS UFT FIELD PER DOCKET #01-0299858.

County

Wheeler County

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 257 leases, by the value we compute. Every one of them is in the sitemap.

Lease	Operator	Value
LEDBETTER	MMGL TXPH, LLC	$109.7 M
FRYE RANCH	LE NORMAN OPERATING LLC	$88.5 M
STILES 1	FORMENTERA OPERATIONS LLC	$86.0 M
MILLS	SANGUINE GAS EXPLORATION, LLC	$81.2 M
BRITT-RATHJEN	UNBRIDLED RESOURCES, LLC	$66.1 M
BUCKINGHAM	MUSTANG FUEL CORPORATION	$64.4 M
LUKER	UNBRIDLED RESOURCES, LLC	$64.2 M
THURMAN HORN	UNBRIDLED RESOURCES, LLC	$61.6 M
RUTH 4	UNBRIDLED RESOURCES, LLC	$58.4 M
BUCKINGHAM	SANGUINE GAS EXPLORATION, LLC	$55.8 M
PURYEAR 28	ENERVEST OPERATING, L.L.C.	$54.3 M
DAVIS, G.C.	MMGL TXPH, LLC	$52.6 M
BASS	SANGUINE GAS EXPLORATION, LLC	$50.8 M
DAVIS 60	UNBRIDLED RESOURCES, LLC	$48.5 M
LEDBETTER 66	UNBRIDLED RESOURCES, LLC	$44.3 M
HAGERMAN	UNBRIDLED RESOURCES, LLC	$40.7 M
MILLS RANCH & CO.	SANGUINE GAS EXPLORATION, LLC	$39.8 M
HINK	SANGUINE GAS EXPLORATION, LLC	$38.4 M
LISTER A	MMGL TXPH, LLC	$37.7 M
MOONEY	SANGUINE GAS EXPLORATION, LLC	$36.9 M
BROWN	SANGUINE GAS EXPLORATION, LLC	$36.8 M
STILES 3	FORMENTERA OPERATIONS LLC	$35.9 M
LOTT 2	UNBRIDLED RESOURCES, LLC	$34.6 M
MR	SANGUINE GAS EXPLORATION, LLC	$34.3 M
SALLIE	SANGUINE GAS EXPLORATION, LLC	$34.2 M
IVESTOR 57 SL	MMGL TXPH, LLC	$32.5 M
DAVIS 64	UNBRIDLED RESOURCES, LLC	$32.1 M
NEELEY	SANGUINE GAS EXPLORATION, LLC	$31.3 M
LUNSFORD 3	PRESIDIO PETROLEUM LLC	$30.6 M
MORRISON	UNBRIDLED RESOURCES, LLC	$29.7 M
FRYE	PRESIDIO PETROLEUM LLC	$29.5 M
DUPONT 1	PRESIDIO PETROLEUM LLC	$29.2 M
DAVIS	SANGUINE GAS EXPLORATION, LLC	$29.2 M
ATHERTON, D. E.	UNBRIDLED RESOURCES, LLC	$28.8 M
THURMAN HORN	UNBRIDLED RESOURCES, LLC	$28.7 M
BRITT	UNBRIDLED RESOURCES, LLC	$28.7 M
BASS-CALCOTE	SANGUINE GAS EXPLORATION, LLC	$28.7 M
COLTHARP	SANGUINE GAS EXPLORATION, LLC	$27.7 M
LEDBETTER 66	UNBRIDLED RESOURCES, LLC	$27.5 M
HALE	SANGUINE GAS EXPLORATION, LLC	$26.8 M
LOTT 2	UNBRIDLED RESOURCES, LLC	$26.6 M
BASIN ROYALTY	UNBRIDLED RESOURCES, LLC	$26.5 M
HUFF 32	UNBRIDLED RESOURCES, LLC	$26.1 M
STILES RANCH 5	UNBRIDLED RESOURCES, LLC	$25.8 M
LOTT 3	MMGL TXPH, LLC	$24.6 M
DAVIS 65	UNBRIDLED RESOURCES, LLC	$24.4 M
MILLS RANCH & CO.	SANGUINE GAS EXPLORATION, LLC	$24.2 M
STILES 67	UNBRIDLED RESOURCES, LLC	$24.1 M
LANCASTER	MMGL TXPH, LLC	$23.8 M
WILLIS, LUTHER 9	MMGL TXPH, LLC	$23.3 M
DABERRY	MUSTANG FUEL CORPORATION	$23.2 M
HUDSON 4	MMGL TXPH, LLC	$23.1 M
REED 31	UNBRIDLED RESOURCES, LLC	$23.1 M
HUFF 32	UNBRIDLED RESOURCES, LLC	$22.9 M
SIDNEY	SANGUINE GAS EXPLORATION, LLC	$22.6 M
HUNTER 30	PRESIDIO PETROLEUM LLC	$22.5 M
DUPONT 1	LE NORMAN OPERATING LLC	$22.4 M
LOTT 2	UNBRIDLED RESOURCES, LLC	$22.3 M
DAVIS 64	MMGL TXPH, LLC	$22.2 M
LOTT 3	MMGL TXPH, LLC	$21.7 M
LOTT 1	MMGL TXPH, LLC	$21.3 M
STILES 17	FORMENTERA OPERATIONS LLC	$21.2 M
DAVIS 64 SL	UNBRIDLED RESOURCES, LLC	$21.2 M
MILLS RANCH & CO.	SANGUINE GAS EXPLORATION, LLC	$21.2 M
MEEK 41	UNBRIDLED RESOURCES, LLC	$21.1 M
MILLS RANCH & CO.	SANGUINE GAS EXPLORATION, LLC	$21.1 M
LOTT 2	MMGL TXPH, LLC	$20.9 M
REED 70	UNBRIDLED RESOURCES, LLC	$20.7 M
STILES 4B	FORMENTERA OPERATIONS LLC	$20.4 M
ATHERTON	UNBRIDLED RESOURCES, LLC	$20.4 M
BARTZ 19A	FORMENTERA OPERATIONS LLC	$20.4 M
ZYBACH	UNBRIDLED RESOURCES, LLC	$20.3 M
HILL	PRESIDIO PETROLEUM LLC	$19.9 M
ZYBACH 11	MMGL TXPH, LLC	$19.7 M
PYLE	PRESIDIO PETROLEUM LLC	$19.3 M
LEE HEFLEY (AW)	MMGL TXPH, LLC	$19.1 M
BRITT CALDWELL	UNBRIDLED RESOURCES, LLC	$18.9 M
STILES 16	FORMENTERA OPERATIONS LLC	$18.3 M
BROWN 8	MMGL TXPH, LLC	$18.2 M
CARR 1	MMGL TXPH, LLC	$18.0 M
STILES 4	FORMENTERA OPERATIONS LLC	$18.0 M
DAVIS 65	UNBRIDLED RESOURCES, LLC	$17.9 M
STILES RANCH 5	UNBRIDLED RESOURCES, LLC	$17.8 M
REED 70	UNBRIDLED RESOURCES, LLC	$17.7 M
ATHERTON, D. E.	UNBRIDLED RESOURCES, LLC	$17.5 M
ATHERTON 69	UNBRIDLED RESOURCES, LLC	$17.4 M
DAVIS 64	UNBRIDLED RESOURCES, LLC	$17.3 M
COLTHARP	MUSTANG FUEL CORPORATION	$17.3 M
ATHERTON, D. E.	UNBRIDLED RESOURCES, LLC	$17.0 M
STILES 68B	TAPSTONE ENERGY, LLC	$17.0 M
STILES 68	FORMENTERA OPERATIONS LLC	$17.0 M
FRYE E 9	UNBRIDLED RESOURCES, LLC	$16.9 M
STILES RANCH 5	UNBRIDLED RESOURCES, LLC	$16.5 M
STILES LAND 5	MMGL TXPH, LLC	$16.2 M
STILES 67	UNBRIDLED RESOURCES, LLC	$16.1 M
BLACK 50	UNBRIDLED RESOURCES, LLC	$15.9 M
LEE 42 WEL	UNBRIDLED RESOURCES, LLC	$15.8 M
MEEK 41	UNBRIDLED RESOURCES, LLC	$15.7 M
LUTHER WILLIS 9	MMGL TXPH, LLC	$15.6 M
LOTT	UNBRIDLED RESOURCES, LLC	$15.6 M
IVESTOR 57	MMGL TXPH, LLC	$15.4 M
MILLS RANCH SE 24	SANGUINE GAS EXPLORATION, LLC	$15.2 M
HUFF 32	UNBRIDLED RESOURCES, LLC	$15.2 M
LISTER	MMGL TXPH, LLC	$14.9 M
STILES 68	FORMENTERA OPERATIONS LLC	$14.8 M
LOTT 3	DEVON ENERGY PRODUCTION CO, L.P.	$14.8 M
STILES 68A	TAPSTONE ENERGY, LLC	$14.6 M
DAVIS 65	UNBRIDLED RESOURCES, LLC	$14.5 M
5RITT 26	UNBRIDLED RESOURCES, LLC	$14.3 M
ATHERTON	UNBRIDLED RESOURCES, LLC	$14.3 M
DAVIS 64	MMGL TXPH, LLC	$14.2 M
MARILYN	SANGUINE GAS EXPLORATION, LLC	$14.2 M
DAVIS 65	UNBRIDLED RESOURCES, LLC	$14.0 M
STILES	UNBRIDLED RESOURCES, LLC	$13.8 M
ONA BLACK 49	UNBRIDLED RESOURCES, LLC	$13.8 M
LEDBETTER 66	UNBRIDLED RESOURCES, LLC	$13.7 M
LUKER	UNBRIDLED RESOURCES, LLC	$13.7 M
LEDBETTER 66	UNBRIDLED RESOURCES, LLC	$13.6 M
ATHERTON 69	UNBRIDLED RESOURCES, LLC	$13.6 M
MILLER	UNBRIDLED RESOURCES, LLC	$13.5 M
STILES 16A	FORMENTERA OPERATIONS LLC	$13.2 M
MILLS RANCH	SANGUINE GAS EXPLORATION, LLC	$13.0 M
WALSER	SANGUINE GAS EXPLORATION, LLC	$12.9 M
STILES 67	UNBRIDLED RESOURCES, LLC	$12.8 M
G. C. DAVIS	SANGUINE GAS EXPLORATION, LLC	$12.8 M
JOLLY 21 SL	UNBRIDLED RESOURCES, LLC	$12.8 M
HAGERMAN	UNBRIDLED RESOURCES, LLC	$12.6 M
BRYANT	MMGL TXPH, LLC	$12.6 M
DAVIS 64	MMGL TXPH, LLC	$12.4 M
FRYE 9	UNBRIDLED RESOURCES, LLC	$12.3 M
BLACK 50	UNBRIDLED RESOURCES, LLC	$12.2 M
LUTHER WILLIS 9	MMGL TXPH, LLC	$12.2 M
TYLER 55	FORMENTERA OPERATIONS LLC	$12.0 M
DAVIS 65	UNBRIDLED RESOURCES, LLC	$11.9 M
LEE HEFLEY	MMGL TXPH, LLC	$11.9 M
MOORE FARMS	LE NORMAN OPERATING LLC	$11.8 M
LANCASTER	MMGL TXPH, LLC	$11.7 M
CHAMP DAVIS	MUSTANG FUEL CORPORATION	$11.5 M
ATHERTON SL 69	UNBRIDLED RESOURCES, LLC	$11.5 M
TA GREENHOUSE	UNBRIDLED RESOURCES, LLC	$11.4 M
STILES 68	FORMENTERA OPERATIONS LLC	$11.4 M
STILES 18A	FORMENTERA OPERATIONS LLC	$11.3 M
LUNSFORD 3	PRESIDIO PETROLEUM LLC	$11.2 M
BURRELL	SANGUINE GAS EXPLORATION, LLC	$11.1 M
REED 2	UNBRIDLED RESOURCES, LLC	$11.1 M
HAMILTON 39	4P ENERGY TEXAS, LLC	$11.1 M
BURRELL XLA	UNBRIDLED RESOURCES, LLC	$11.0 M
HUDSON 4	MMGL TXPH, LLC	$10.9 M
LOTT	PRESIDIO PETROLEUM LLC	$10.9 M
BLONSTEIN ESTATE	CRAWLEY PETROLEUM CORPORATION	$10.6 M
STILES 68C	TAPSTONE ENERGY, LLC	$10.5 M
MILLS RANCH & CO.	SANGUINE GAS EXPLORATION, LLC	$10.5 M
MILLER	UNBRIDLED RESOURCES, LLC	$10.2 M
ONA BLACK 49	UNBRIDLED RESOURCES, LLC	$10.1 M
STILES 24	FORMENTERA OPERATIONS LLC	$10.0 M
ATHERTON	UNBRIDLED RESOURCES, LLC	$9.8 M
DAVIDSON	SANGUINE GAS EXPLORATION, LLC	$9.8 M
FRYE RANCH 10	PRESIDIO PETROLEUM LLC	$9.7 M
DAVIS 65	UNBRIDLED RESOURCES, LLC	$9.6 M
REED 2	UNBRIDLED RESOURCES, LLC	$9.4 M
SEEDS 63B	FORMENTERA OPERATIONS LLC	$9.4 M
ATHERTON 69	UNBRIDLED RESOURCES, LLC	$9.1 M
STILES 16B	FORMENTERA OPERATIONS LLC	$9.0 M
BARTZ 19	FORMENTERA OPERATIONS LLC	$8.9 M
STILES 4D	FORMENTERA OPERATIONS LLC	$8.9 M
ZYBACH	UNBRIDLED RESOURCES, LLC	$8.8 M
REED 31	UNBRIDLED RESOURCES, LLC	$8.7 M
E. R. BLOCKER 604	UNBRIDLED RESOURCES, LLC	$8.4 M
FRYE RANCH 10	PRESIDIO PETROLEUM LLC	$8.4 M
ZYBACH	UNBRIDLED RESOURCES, LLC	$8.4 M
HARRIS	UNBRIDLED RESOURCES, LLC	$8.3 M
BRITT 34	UNBRIDLED RESOURCES, LLC	$8.1 M
YOUNG	MMGL TXPH, LLC	$8.0 M
BARTZ 19B	FORMENTERA OPERATIONS LLC	$7.9 M
BLACK 50	UNBRIDLED RESOURCES, LLC	$7.8 M
BFT	RICHLAND RESOURCES CORPORATION	$7.7 M
DUPONT 1	PRESIDIO PETROLEUM LLC	$7.4 M
BRITT RANCH UNIT	PRESIDIO PETROLEUM LLC	$7.3 M
CALCOTE 63	FORMENTERA OPERATIONS LLC	$7.3 M
MICHELLE 5	PRESIDIO PETROLEUM LLC	$7.1 M
SEEDS 63A	FORMENTERA OPERATIONS LLC	$7.1 M
BRYANT	SANGUINE GAS EXPLORATION, LLC	$6.8 M
HILL	PRESIDIO PETROLEUM LLC	$6.8 M
BRITT	ENERVEST OPERATING, L.L.C.	$6.8 M
E. R. BLOCKER 504	UNBRIDLED RESOURCES, LLC	$6.6 M
E. R. BLOCKER 304	UNBRIDLED RESOURCES, LLC	$6.5 M
STILES 1	FORMENTERA OPERATIONS LLC	$6.2 M
DAVIS, G.C.	SAMSON LONE STAR, LLC	$6.0 M
MOORE 62	FORMENTERA OPERATIONS LLC	$6.0 M
STILES 4C	FORMENTERA OPERATIONS LLC	$6.0 M
MATT	SANGUINE GAS EXPLORATION, LLC	$5.8 M
HAMILTON 39	UNBRIDLED RESOURCES, LLC	$5.8 M
STILES 3	FORMENTERA OPERATIONS LLC	$5.8 M
BARTZ 19C	FORMENTERA OPERATIONS LLC	$5.5 M
PURYEAR 28	UNBRIDLED RESOURCES, LLC	$5.3 M
WHITEHURST	SANGUINE GAS EXPLORATION, LLC	$5.3 M
E. R. BLOCKER 404	UNBRIDLED RESOURCES, LLC	$5.2 M
STILES 18B	FORMENTERA OPERATIONS LLC	$5.2 M
DAVIS	LE NORMAN OPERATING LLC	$4.9 M
NAOMI	SANGUINE GAS EXPLORATION, LLC	$4.8 M

Field number 61691235, from the Railroad Commission's field register. The register's own index resolves 274 leases and 400 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.