BIG COWBOY (LOBO), District 04, 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
143
with a page here
Operators
14
Value, all time
$400.5 M
87% of the register's 164
Discovered
1979-07-17
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 143 leases in this field that have a page here — 87% of the register's 164 — 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
Gas10068520,644 mcf4,137 bblcondensate236,508,534 mcfsince 1970

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB2010-11-02467 ft1,200 ft400 ft

Commission remarks: STATEWIDE RULES. NO P-15 & PLAT.

County

Leases in this field

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

LeaseOperatorValue
HIRSCH ESTATE NO. 1954HILCORP ENERGY COMPANY$16.9 M
A.B. CULPEPPER 2064HILCORP ENERGY COMPANY$15.6 M
BILLINGS HEIRSHILCORP ENERGY COMPANY$14.4 M
HIRSCH ESTATE 2094HILCORP ENERGY COMPANY$13.4 M
VAQUILLAS RANCH STATE 1194HILCORP ENERGY COMPANY$12.5 M
HIRSCH ESTATE 1771HILCORP ENERGY COMPANY$11.5 M
BILLINGS HEIRSCONOCOPHILLIPS COMPANY$11.5 M
HIRSCH ESTATE 2104 BHILCORP ENERGY COMPANY$11.3 M
LINCOLN RANCHHILCORP ENERGY COMPANY$9.9 M
EL GATO AHILCORP ENERGY COMPANY$8.9 M
WILLIAMSON, STANLEY H.BLACKBEARD OPERATING, LLC$8.3 M
HIRSCH ESTATE 1772HILCORP ENERGY COMPANY$8.1 M
HIRSCH ESTATE 2096HILCORP ENERGY COMPANY$8.0 M
LINCOLN, W.P. 1312HILCORP ENERGY COMPANY$7.5 M
LINCOLN, W.P. 1312HILCORP ENERGY COMPANY$7.0 M
HIRSCH STATE 2072HILCORP ENERGY COMPANY$6.4 M
EL GATOHILCORP ENERGY COMPANY$6.2 M
HIRSCH ESTATE 1766HILCORP ENERGY COMPANY$6.2 M
VAQUILLAS RANCHHILCORP ENERGY COMPANY$6.1 M
HIRSCH ESTATE GAS UNIT 1766HILCORP ENERGY COMPANY$6.0 M
LINCOLN, W.P. 1312HILCORP ENERGY COMPANY$5.8 M
VAQUILLAS RANCH 67THREE-C OIL AND GAS$5.6 M
VAQUILLAS RANCH A-3HILCORP ENERGY COMPANY$5.1 M
A. V. NORFLEETHILCORP ENERGY COMPANY$5.1 M
WEBB COUNTY SCHOOL BOARDALDINE OIL AND GAS, LP$4.8 M
WILLIAMSON, S.H. ET ALHILCORP ENERGY COMPANY$4.7 M
HIRSCH ESTATE 2093HILCORP ENERGY COMPANY$4.4 M
WEBB COUNTY SCHOOL BOARDALDINE OIL AND GAS, LP$4.3 M
HIRSCH ESTATE 537HILCORP ENERGY COMPANY$4.2 M
HIRSCH, I. ESTATE 517HILCORP ENERGY COMPANY$4.1 M
HIRSCH ESTATE AHILCORP ENERGY COMPANY$4.0 M
NORFLEET A.V.HILCORP ENERGY COMPANY$4.0 M
HIRSCH ESTATE 1766HILCORP ENERGY COMPANY$3.9 M
SOUTH CALLAGHAN RANCHALDINE OIL AND GAS, LP$3.9 M
WEBB COUNTY SCHOOL BOARDALDINE OIL AND GAS, LP$3.9 M
ROSCHER, W.C. 518HILCORP ENERGY COMPANY$3.7 M
SCHWARZ-STATE BBLUESTONE NATURAL RES. II, LLC$3.6 M
SOUTH CALLAGHAN RANCHALDINE OIL AND GAS, LP$3.5 M
CULPEPPER, A.B. 2064HILCORP ENERGY COMPANY$3.5 M
WILLIAMSON, STANLEY H.EOG RESOURCES, INC.$3.5 M
HIRSCH ESTATE 2094HILCORP ENERGY COMPANY$3.4 M
HIRSCH ESTATE 517HILCORP ENERGY COMPANY$3.4 M
WEBB COUNTY SCHOOL BOARDPROLINE ENERGY RESOURCES INC$3.3 M
WEBB COUNTY SCHOOL BOARDPROLINE ENERGY RESOURCES INC$3.2 M
HIRSCH ESTATE 537HILCORP ENERGY COMPANY$3.0 M
HIRSCH ESTATE 1772HILCORP ENERGY COMPANY$2.9 M
HIRSCH ESTATE 2071HILCORP ENERGY COMPANY$2.9 M
DIX RANCH-STATE AHILCORP ENERGY COMPANY$2.9 M
SOUTH CALLAGHAN RANCHALDINE OIL AND GAS, LP$2.8 M
VAQUILLAS 1629THREE-C OIL AND GAS$2.8 M
HIRSCH ESTATE 517HILCORP ENERGY COMPANY$2.7 M
HIRSCH STATE 2072HILCORP ENERGY COMPANY$2.6 M
VAQUILLAS RANCH-A3HILCORP ENERGY COMPANY$2.4 M
VAQUILLAS RANCH 67THREE-C OIL AND GAS$2.4 M
ROSCHER, W. C. 518CONOCOPHILLIPS COMPANY$2.4 M
VAQUILLAS 1629THREE-C OIL AND GAS$2.3 M
ROSCHER, W.C. 518HILCORP ENERGY COMPANY$2.3 M
ROSCHER-HIRSCH G.U.HILCORP ENERGY COMPANY$2.2 M
ROSCHER-HIRSCH GAS UNITHILCORP ENERGY COMPANY$2.2 M
HIRSCH-STATE-NORFLEET GAS UNITHILCORP ENERGY COMPANY$2.1 M
HIRSCH ESTATE 1772HILCORP ENERGY COMPANY$2.1 M
CULPEPPER, A.B.2068HILCORP ENERGY COMPANY$2.1 M
ROSCHER, W.C. 518HILCORP ENERGY COMPANY$2.1 M
LESSOR HOLDINGCONOCOPHILLIPS COMPANY$2.1 M
HIRSCH-STATE-NORFLEET GAS UNITHILCORP ENERGY COMPANY$2.0 M
HIRSCH ESTATE 1772HILCORP ENERGY COMPANY$2.0 M
HIRSCH ESTATE AHILCORP ENERGY COMPANY$1.9 M
SOUTH CALLAGHAN RANCHALDINE OIL AND GAS, LP$1.9 M
CULPEPPER, A. B. 2068HILCORP ENERGY COMPANY$1.7 M
VAQUILLAS 67THREE-C OIL AND GAS$1.7 M
HIRSCH ESTATE 858HILCORP ENERGY COMPANY$1.6 M
ABE LINCOLN GU "A"BLUESTONE NATURAL RES. II, LLC$1.5 M
HIRSCH ESTATE 858HILCORP ENERGY COMPANY$1.5 M
HIRSH ESTATE 2096HILCORP ENERGY COMPANY$1.5 M
HIRSCH ESTATE 1771HILCORP ENERGY COMPANY$1.5 M
HIRSCH ESTATE 2094HILCORP ENERGY COMPANY$1.4 M
DIX RANCH - STATE AHILCORP ENERGY COMPANY$1.3 M
WEBB COUNTY SCHOOL BOARDFAULCONER, VERNON E., INC.$1.3 M
HIRSCH ESTATE 1765HILCORP ENERGY COMPANY$1.3 M
HIRSCH STATE 2072HILCORP ENERGY COMPANY$1.3 M
HIRSCH ESTATE 2071HILCORP ENERGY COMPANY$1.2 M
HIRSCH ESTATE "2095"HILCORP ENERGY COMPANY$1.2 M
HIRSCH ESTATE 537HILCORP ENERGY COMPANY$1.2 M
WEBB COUNTY SCHOOL BOARDFAULCONER, VERNON E., INC.$1.2 M
HIRSCH ESTATE 54HILCORP ENERGY COMPANY$1.2 M
HIRSH-STATE 2072HILCORP ENERGY COMPANY$1.1 M
HIRSCH ESTATE "2093"HILCORP ENERGY COMPANY$1.1 M
HIRSCH ESTATE 2096HILCORP ENERGY COMPANY$1.1 M
HIRSCH ESTATE 1765 BHILCORP ENERGY COMPANY$1.1 M
HIRSCH ESTATE 2071CONOCOPHILLIPS COMPANY$1.1 M
LESSOR-NORFLEET GAS UNITHILCORP ENERGY COMPANY$1.0 M
HIRSCH ESTATE 1770 BHILCORP ENERGY COMPANY$1.0 M
NORFLEET-LESSOR G. U.HILCORP ENERGY COMPANY$1.0 M
HIRSCH ESTATE 857HILCORP ENERGY COMPANY$934 k
ROSCHER-HIRSCH GAS UNTHILCORP ENERGY COMPANY$896 k
BILLINGS HEIRSCONOCOPHILLIPS COMPANY$845 k
ROSCHER-HIRSCH GAS UNITHILCORP ENERGY COMPANY$826 k
HIRSCH ESTATE 1772HILCORP ENERGY COMPANY$809 k
HIRSCH ESTATE 54CONOCOPHILLIPS COMPANY$782 k
HIRSCH ESTATE 1766HILCORP ENERGY COMPANY$766 k
ROSCHER-HIRSCH G. U.HILCORP ENERGY COMPANY$763 k
HIRSCH ESTATE 538HILCORP ENERGY COMPANY$726 k
ROSCHER, W.C. 518CONOCOPHILLIPS COMPANY$719 k
EL GATOHILCORP ENERGY COMPANY$683 k
EL GATOHILCORP ENERGY COMPANY$644 k
HIRSCH ESTATE GAS UNITCONOCOPHILLIPS COMPANY$622 k
HIRSCH ESTATE 538CONOCOPHILLIPS COMPANY$568 k
BILLINGS HEIRSCONOCOPHILLIPS COMPANY$526 k
BILLINGS HEIRSCONOCOPHILLIPS COMPANY$522 k
VAQUILLAS RANCH "3"THREE-C OIL AND GAS$480 k
WEBB COUNTY SCHOOL BOARDNORTH CENTRAL OIL CORP.$473 k
HIRSCH ESTATE 1765 BHILCORP ENERGY COMPANY$445 k
HIRSCH ESTATE 1772HILCORP ENERGY COMPANY$393 k
HIRSH ESTATE 1772HILCORP ENERGY COMPANY$391 k
HIRSH ESTATE 538HILCORP ENERGY COMPANY$289 k
LINCOLN, W.P. 2345CONOCO INC.$287 k
WEBB COUNTY SCHOOL BOARDNORTH CENTRAL OIL CORP.$189 k
WEBB COUNTY SCHOOL BOARDNORTH CENTRAL OIL CORP.$182 k
NORFLEET, A. V.CONOCOPHILLIPS COMPANY$166 k
HIRSCH ESTATE 857CONOCO INC.$165 k
HIRSCH ESTATECONOCOPHILLIPS COMPANY$144 k
HIRSCH ESTATE 858CONOCOPHILLIPS COMPANY$140 k
DIX RANCH ACONOCO INC.$129 k
STANFORD, P.H.ROSETTA RESOURCES OPERATING LP$128 k
HIRSCH ESTATE 2071HILCORP ENERGY COMPANY$99 k
HIRSCH ESTATE 858CONOCOPHILLIPS COMPANY$95 k
WEBB COUNTY SCHOOL BOARDNORTH CENTRAL OIL CORP.$63 k
ROSCHER, W. C.CONOCOPHILLIPS COMPANY$60 k
HIRSCH ESTATE 517CONOCOPHILLIPS COMPANY$47 k
WEBB COUNTY SCHOOL BOARDNORTH CENTRAL OIL CORP.$45 k
HIRSCH ESTATE 538CONOCOPHILLIPS COMPANY$43 k
HILELI GUCONOCO INC.$42 k
HIRSCH ESTATE 537CONOCOPHILLIPS COMPANY$36 k
VAQUILLAS RANCH A-3CONOCOPHILLIPS COMPANY$8 k
ROSCHER-HIRSCH GAS UNITCONOCOPHILLIPS COMPANY$5 k
HIRSCH ESTATE 2094HILCORP ENERGY COMPANY$5 k
HIRSCH ESTATE 2071ENRON OIL & GAS COMPANY$3 k
HIRSCH ESTATE 2104 BCONOCO INC.$2 k
HIRSCH ESTATE 2094ENRON OIL & GAS COMPANY$265
HIRSCH ESTATE ACONOCOPHILLIPS COMPANY$135
HIRSCH ESTATE 538ENRON OIL & GAS COMPANY$18
VAQUILLAS RANCH CO. LTD. 1627ENRON OIL & GAS COMPANY
SOUTH CALLAGHAN RANCHCALPINE NATURAL GAS L.P.

Field number 07800200, from the Railroad Commission's field register. The register's own index resolves 164 leases and 164 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.