WESTBROOK, District 08, 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
50
with a page here
Operators
25
Value, all time
$3.09 bn
49% of the register's 103
Discovered
1921-12-31
Oil

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 50 leases in this field that have a page here — 49% of the register's 103 — 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
Oil1,7721,004894,735 bbl43,482 mcfcasinghead149,879,716 bblsince discovery

The discovery well's oil measured 24.3° API gravity, perforated at 3,100 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
OilB330 ft933 ft402,100 ft
OilO330 ft933 ft101,100 ft
OilO330 ft933 ft201,500 ft

Commission remarks: OF ALL NECESSARY FORMS AND FEES STILL REQUIRED,EFFECTIVE 6/27/11

County

Leases in this field

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

LeaseOperatorValue
NORTH WESTBROOK UNITBCE-MACH III LLC$1.61 bn
WESTBROOK SOUTHEAST UNITBCE-MACH III LLC$906.2 M
WESTBROOK SOUTHWEST UNITGRAYROCK ENERGY II, LLC$512.1 M
MITCHELL FEEWINN OPERATING, LLC$12.1 M
SMARTT, L. E. A.BCE-MACH III LLC$6.3 M
BRENNAND, H. D. -B-BCE-MACH III LLC$6.3 M
PHELAN, BONITAM2 SQUARED OPERATING, LLC$5.5 M
BRENNAND, H. D.UNITEX OIL & GAS, L.L.C.$4.5 M
MORRISON -G-GRAYROCK ENERGY II, LLC$4.5 M
TRULOCK W. G.WINN OPERATING, LLC$3.7 M
MORWESTGRAYROCK ENERGY II, LLC$3.0 M
BRYANTCEDAR BEND OIL COMPANY$2.6 M
MORRISONSWJN OIL COMPANY$1.7 M
SUN-GEORGIA TECHRASMUSSEN, TOM$1.5 M
NARRELLBCE-MACH III LLC$1.5 M
DAWSONMORGAN CREEK PRODUCTION CO., INC$1.5 M
NEWBYNORDSTRAND ENGINEERING, INC.$1.2 M
TRULOCK, JAMES S.M2 SQUARED OPERATING, LLC$1.1 M
MASSEYNORDSTRAND ENGINEERING, INC.$942 k
TRULOCK, O. U. -A-BEASLEY, KENNETH$831 k
GOSPEL TRUMPETCROSS CUT PETROLEUM, LLC$748 k
HARDCASTLENORDSTRAND ENGINEERING, INC.$706 k
ERWINSATANTA OIL COMPANY$689 k
RITCHEY, FLOYDGNG OPERATING LLC$637 k
EDWARDS, ADAMORGAN CREEK PRODUCTION CO., INC$633 k
TRULOCK, O. U.BEASLEY, KENNETH$586 k
TRULOCK, W. G.CEDAR BEND OIL COMPANY$551 k
PHELAN, BONITARASMUSSEN, TOM$504 k
HINESPARTEE DRILLING INC.$194 k
TRULOCK, MAECEDAR BEND OIL COMPANY$175 k
DOOLFMORGAN CREEK PRODUCTION CO., INC$161 k
JUSTICEMORGAN CREEK PRODUCTION CO., INC$134 k
DORNPARTEE DRILLING INC.$96 k
LOTSPEICH, VIRGINIAPRODUCTION MARKETING ASSOC INC$94 k
BROWN, E. H. -B-PIONEER NATURAL RES. USA, INC.$85 k
COLEMAN, P. C.AMERICO ENERGY RESOURCES, LLC$77 k
MAYPARTEE DRILLING INC.$77 k
COLEMAN, P.C. "A"AMERICO ENERGY RESOURCES, LLC$69 k
BROWN, E. H.PIONEER NATURAL RES. USA, INC.$59 k
MORRIS, J. F.CWOC$53 k
DOOLF AMORGAN CREEK PRODUCTION CO., INC$38 k
FEASTERPARTEE DRILLING INC.$25 k
LATIMER, M.T.PRODUCTION MARKETING ASSOC INC$18 k
BODINEPARTEE DRILLING INC.$15 k
DEL REALBEDFORD OIL & GAS, INC.$10 k
JORDONVTEX ENERGY, INC.$9 k
BRENNANDSAVANNAH ROSS AND COMPANY, LLC$9 k
BRENNANDSTEPHENSON, G. ROBBIN$7 k
HINESVECTOR ENERGY CORP.$3 k
BIRD-GUTHRIEBEASLEY OILFIELD SERVICES, INC.$1 k

Field number 96563001, from the Railroad Commission's field register. The register's own index resolves 103 leases and 2,419 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.