BIG WELLS (SAN MIGUEL), 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
49
with a page here
Operators
22
Value, all time
$211.4 M
44% of the register's 111
Discovered
1969-01-16
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 49 leases in this field that have a page here — 44% of the register's 111 — 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
Oil914724,170 bbl0 mcfcasinghead59,973,188 bblsince discovery
Gas12797,683 mcf0 bblcondensate30,922,897 mcfsince 1970

The discovery well's oil measured 33.4° API gravity, perforated at 5,425 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB1998-02-24467 ft1,200 ft803,250 ft
GasO1998-02-24467 ft1,200 ft402,150 ft
OilB1998-02-24467 ft1,200 ft803,250 ft
OilO1998-02-24467 ft1,200 ft402,150 ft

Commission remarks: PLAT REQUIRED.

County

Leases in this field

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

LeaseOperatorValue
BIG WELLS /SAN MIGUEL/ UNITFLINT OAK ENERGY, LLC$119.7 M
MCLEAN-BOWMAN -B-UNITEX OIL & GAS, L.L.C.$19.7 M
MCLEAN-BOWMAN -A-UNITEX OIL & GAS, L.L.C.$8.2 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$5.4 M
LAS VEGAS RANCHTRINITY OPERATING (USG), LLC$4.5 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$4.2 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$3.9 M
BIG WELLS (SAN MIGUEL) UNITTRINITY OPERATING (USG), LLC$3.5 M
BIG WELLS (SAN MIGUEL)FLINT OAK ENERGY, LLC$3.5 M
F.N.B.T. "A"UNITEX OIL & GAS, L.L.C.$3.3 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$2.9 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$2.8 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$2.3 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$2.2 M
LUPE, JOHN B. C907 OIL LLC$2.2 M
LUPE, JOHN B. -D-907 OIL LLC$2.1 M
LUPE, JOHN B. A907 OIL LLC$2.0 M
BIG WELLS (SAN MIGUEL) UNITTEXAS AMERICAN RESOURCES COMPANY$1.9 M
BAGGETT, J.B.MCDANIEL COMPANY, INC., THE$1.8 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$1.7 M
BAGGETT, JOHN B. BFLINT OAK ENERGY, LLC$1.7 M
GEORGE, BURTON O.SILVER HILL ENERGY OPERATING LLC$1.4 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$1.3 M
BIG WELLS (SAN MIGUEL) UNITFLINT OAK ENERGY, LLC$1.2 M
BIG WELLS (SAN MIGUEL) UNITTRINITY OPERATING (USG), LLC$1.1 M
BAGGETT, JOHN B.ACORN OIL & GAS, LLC$1.0 M
F.N.B.T. NORTHTRADITION RESOURCES OPER, LLC$851 k
HUCK, C.C.MCDANIEL COMPANY, INC., THE$720 k
JONES, E.B.MCDANIEL COMPANY, INC., THE$696 k
LUPE, JOHN B. -B-907 OIL LLC$534 k
JANANDALE OPERATING COMPANY$531 k
LASITER, M.L.BLUESTAR ENERGY, INC.$442 k
89 RANCHJB OIL & GAS WELL SERVICE$297 k
JUSTINDALE OPERATING COMPANY$280 k
KORN AFLINT OAK ENERGY, LLC$249 k
HENRYCAPROCK EXPLORATION, INC.$247 k
SULTENFUSS, L. F.THALMANN, DAVID VAC SERVICE INC$228 k
LUPE, JOHN B. -E-BLUESTAR ENERGY, INC.$226 k
WICKHAM, J. E.ARRCO OPERATING, LLC$136 k
BAGGETTRILEY EXPLORATION, LLC$115 k
STIGALLDEVILBISS CONTRACTING, INC.$111 k
KORNFLINT OAK ENERGY, LLC$109 k
WICKHAM, JOHN E.THALMANN, DAVID VAC SERVICE INC$99 k
GEORGE, BURTON O.THALMANN, DAVID VAC SERVICE INC$93 k
MCLEAN-BOWMAN "B"BOTASCH OPERATING, LLC$49 k
NOAH, T. R.DOUBLECHEK OPERATING$15 k
BIG WELLS (SAN MIGUEL) UNITORYX ENERGY COMPANY$6 k
BURTON, GEORGEOATMAN, W. W.$3 k
KAHANEKOVERLY OPERATING CO.$2 k

Field number 08072500, from the Railroad Commission's field register. The register's own index resolves 111 leases and 670 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.