BIG FOOT, District 01, 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

with a page here

Operators

Value, all time

$96.1 M

70% of the register's 97

Discovered

1949-02-02

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 68 leases in this field that have a page here — 70% of the register's 97 — 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	439	38	4,116 bbl	46 mcfcasinghead	35,403,396 bblsince discovery
Gas	1	1	3,582 mcf	0 bblcondensate	373,961 mcfsince 1970

The discovery well's oil measured 44.0° API gravity, perforated at 3,280 ft.

Spacing rule

What the Commission requires of a well on this field.

Wells	Rule	Effective	From the lease line	Between wells	Acres per unit	Max diagonal
Oil	B	1997-07-22	233 ft	330 ft	20	1,500 ft
Oil	O	1997-07-22	233 ft	330 ft	10	1,100 ft
Gas	B	—	330 ft	933 ft	20	500 ft

Commission remarks: 10 ACRE OPT. W/1100' DIAG.

County

Frio County

Leases in this field

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

Lease	Operator	Value
BIG FOOT OLMOS B SAND UNIT	MAVERICK ENERGY GROUP, INC.	$57.6 M
THOMPSON, DENNIS	WATSON ENERGY INVESTMENTS, LLC	$4.6 M
BURNS, JANE -C-	WATSON ENERGY INVESTMENTS, LLC	$4.3 M
ROSENAUER, MATTIE	WATSON ENERGY INVESTMENTS, LLC	$3.3 M
BOWMAN, RUTH M.	HAASS RANCH OIL COMPANY, LLC	$2.6 M
TALLEY	CREATIVE OIL AND GAS OP II, LLC	$2.4 M
OPPENHEIMER, JESSIE D.	WATSON ENERGY INVESTMENTS, LLC	$2.3 M
BAIN, TRAVIS W.	HAASS RANCH OIL COMPANY, LLC	$1.8 M
DICKERSON, WALTER E. ESTATE	AARONMARK SERVICES, LLC	$1.4 M
THOMPSON, WEBB -B-	MAVERICK ENERGY GROUP, INC.	$1.4 M
DAVIDSON, G.	CREATIVE OIL AND GAS OP II, LLC	$1.3 M
BURNS, ANN -A-	MERICA OIL OPERATING COMPANY LLC	$1.1 M
BAIN, T. W.	MAVERICK ENERGY GROUP, INC.	$1.1 M
BURNS, JANE	WATSON ENERGY INVESTMENTS, LLC	$961 k
KAIN	KAIN PETROLEUM, LLC	$803 k
RAUSCHHUBER	BENCHMARK TEXAS PETROLEUM, LLC.	$800 k
BAKER, CHARLES	MAVERICK ENERGY GROUP, INC.	$800 k
FOSTER	MERICA OIL OPERATING COMPANY LLC	$798 k
THOMPSON, C. S. -A-	MAVERICK ENERGY GROUP, INC.	$772 k
NOWLIN, T. P.	DOWNING WELL SERVICE, INC.	$574 k
NIXON, T.	RICKAWAY ENERGY, CORP.	$573 k
COMBS, DAVID	BARNETT ENERGY, INC.	$486 k
BURNS, JANE -A-	WATSON ENERGY INVESTMENTS, LLC	$464 k
RAUSCHHUBER, EMORY	BENCHMARK TEXAS PETROLEUM, LLC.	$436 k
BURNS, JANE -C-	MERICA OIL OPERATING COMPANY LLC	$333 k
SAUNDERS, SUSIE	MAVERICK ENERGY GROUP, INC.	$313 k
SCHELLER, H. A.	MAVERICK ENERGY GROUP, INC.	$306 k
BURNS, JANE -B-	MERICA OIL OPERATING COMPANY LLC	$294 k
SINKS, W. J.	NORTHSTAR ENERGY, INC.	$236 k
BURNS, JANE -E-	MERICA OIL OPERATING COMPANY LLC	$210 k
ROCHE, LUCY	MAVERICK ENERGY GROUP, INC.	$200 k
BOYD BROS	AARONMARK SERVICES, LLC	$195 k
BURNS, ANN	MERICA OIL OPERATING COMPANY LLC	$182 k
BURNS, JANE -D-	MERICA OIL OPERATING COMPANY LLC	$180 k
BURNS, JANE	IMPETRO OPERATING LLC	$131 k
CROUCH	BENCHMARK TEXAS PETROLEUM, LLC.	$125 k
COMBS, DAVID S.	BARNETT ENERGY, INC.	$121 k
BIEDIGER, FERDINAND	OILEX INT'L INVESTMENTS, INC.	$104 k
BURNS, JANE 'F'	IMPETRO OPERATING LLC	$90 k
RIPPEY, MARGARET K.	TEXAS SOUTHERN PETROLEUM CORP.	$73 k
WITTING OLMOS -B- SAND UNIT	TEXAS SOUTHERN PETROLEUM CORP.	$64 k
THOMPSON, C.R.	OILEX INT'L INVESTMENTS, INC.	$53 k
STEWART, T. B. (NEUMANN)	NEUMANN, ALFRED	$45 k
RIPPEY -A-	LEASE ROLLOVER OPERATIONS, INC.	$33 k
SHELL, C.	IMPETRO OPERATING LLC	$30 k
BURNS -F-	CLIPPER OPERATING CO., INC.	$30 k
BURNS -B-	CLIPPER OPERATING CO., INC.	$28 k
RAUSCHHUBER, EMORY C.	COLUMBIA ENERGY PROPERTIES, INC.	$21 k
BURNS -H-	CLIPPER OPERATING CO., INC.	$17 k
BURNS -D-	CLIPPER OPERATING CO., INC.	$16 k
CALAME A	PROPERTY DEVELOPMENT GROUP, INC.	$14 k
SMITH ET AL	NUTEK OIL INC	$14 k
MEADOR, O.E.	OILEX INT'L INVESTMENTS, INC.	$14 k
CALAME	H & M PETROLEUM CORPORATION	$12 k
BIG FOOT OLMOS -B- UNIT	U.S. JIMOIL CORPORATION	$12 k
BURNS -E-	CLIPPER OPERATING CO., INC.	$10 k
BURNS -G-	CLIPPER OPERATING CO., INC.	$7 k
TATE, GORDEN TATE	OILEX INT'L INVESTMENTS, INC.	$5 k
CURTIS, SAM	SERRA ENERGY, INC.	$3 k
BURNS -C-	CLIPPER OPERATING CO., INC.	$3 k
STEWART, T. B.	NEUMANN, ALFRED	$2 k
BOHL, ANNIE	U.S. JIMOIL CORPORATION	$2 k
CUMPIAN, A. G.	STARBURST ENERGY, INC.	$366
THOMPSON, C.R. "A"	OILEX INT'L INVESTMENTS, INC.	—
THOMPSON, C.R. "B"	OILEX INT'L INVESTMENTS, INC.	—
THOMPSON, C.R. "C"	OILEX INT'L INVESTMENTS, INC.	—
THOMPSON, C.R. "D"	OILEX INT'L INVESTMENTS, INC.	—
LPO CALAME	LP OPERATING, LLC	—

Field number 07850001, from the Railroad Commission's field register. The register's own index resolves 97 leases and 1,100 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.