EMPEROR (DEVONIAN), 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
42
with a page here
Operators
17
Value, all time
$435.0 M
56% of the register's 75
Discovered
1954-05-28
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 42 leases in this field that have a page here — 56% of the register's 75 — 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
Oil000 bbl0 mcfcasinghead704 bblsince discovery
Gas23101,025,745 mcf166 bblcondensate1,206,252,495 mcfsince 1970

The discovery well's oil measured 29.0° API gravity, perforated at 9,494 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB660 ft1,980 ft3205,900 ft

Commission remarks: 1/1/97 & TO REMAIN SO FOR 1 YEAR

County

Leases in this field

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

LeaseOperatorValue
BROWN & ALTMAN GAS UNIT NO. 2XTO ENERGY INC.$60.2 M
BROWN-ALTMANHILCORP ENERGY COMPANY$52.1 M
COWDEN, E. W.HILCORP ENERGY COMPANY$48.3 M
HALLEY, S. M. -B-BASIN OIL & GAS OPERATING, LLC$43.4 M
BROWN & ALTMAN GAS UNIT NO. 5HILCORP ENERGY COMPANY$41.6 M
BROWN & ALTMAN GAS UNIT NO. 3HILCORP ENERGY COMPANY$34.2 M
HALLEY, S. M.BASIN OIL & GAS OPERATING, LLC$26.3 M
HALLEY, S. M. -B-SHELL WESTERN E&P$19.6 M
COWDEN, E. W.CHEVRON MIDCONTINENT, L.P.$17.7 M
COWDEN, E. W.HILCORP ENERGY COMPANY$16.0 M
BROWN-ALTMAN UNITBASIN OIL & GAS OPERATING, LLC$15.4 M
MCCABECOMAL OPERATING LLC$11.0 M
MCCABE, F. P.ARRINGTON OIL&GAS OPERATING LLC$8.1 M
#1 KERRDINERO OPERATING COMPANY$5.8 M
HENDRICK OPERATING AREA -C-HILCORP ENERGY COMPANY$5.8 M
BROWN-ALTMANDINERO OPERATING COMPANY$5.8 M
COWDEN -S-COMAL OPERATING LLC$4.4 M
HALLEY, S.PERMEX PETROLEUM CORPORATION$4.3 M
HALLEY, S. M.PERMEX PETROLEUM CORPORATION$3.2 M
HALLEY, S.CHEVRON U. S. A. INC.$2.7 M
COWDEN, E. W. -A-PERMEX PETROLEUM CORPORATION$2.2 M
BROWN-ALTMAN CONS GAS UNIT NO. 8HILCORP ENERGY COMPANY$2.0 M
BROWN-ALTMAN CONS GAS UNIT NO. 8HILCORP ENERGY COMPANY$1.5 M
BROWN & ALTMAN GAS UNIT NO. 7HILCORP ENERGY COMPANY$1.3 M
COWDEN, E. W. UNITPERMEX PETROLEUM CORPORATION$559 k
BROWN-ALTMAN ACCT. 4 -C-CHESAPEAKE OPERATING, INC.$465 k
HALLEY, S. M. -B-ORYX ENERGY COMPANY$384 k
MCCABEARRINGTON OIL&GAS OPERATING LLC$313 k
BROWN-ALTMAN -B-DINERO OPERATING COMPANY$228 k
HALLEY, S. M.CHEVRON U. S. A. INC.$168 k
HALLEY, S.CHEVRON U. S. A. INC.$57 k
MCCABEARRINGTON,DAVID H. OIL & GAS,INC$45 k
BROWN-ALTMAN UNIT 38ARRINGTON,DAVID H. OIL & GAS,INC$15 k
BROWN-ALTMAN CONS GAS UNIT NO. 8EXXON CORP.$8 k
COWDEN, E. W. UNIT AHELMERICH & PAYNE, INC.$1 k
KERR -B-DINERO OPERATING COMPANY$1 k
BROWN & ALTMAN GAS UNIT NO. 6EXXON CORP.$763
BROWN-ALTMAN CONS GAS UNIT NO. 8EXXON CORP.$751
MCCABECIMAREX ENERGY CO.
HENDRICK, T. J. & IDAHELMERICH & PAYNE, INC.
COWDEN, E. W.MW PETROLEUM CORPORATION
HENDRICK OPERATING AREA -B-MW PETROLEUM CORPORATION

Field number 28961284, from the Railroad Commission's field register. The register's own index resolves 75 leases and 75 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.