KEYSTONE (ELLENBURGER), 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
77
with a page here
Operators
10
Value, all time
$856.2 M
82% of the register's 94
Discovered
1943-06-06
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 77 leases in this field that have a page here — 82% of the register's 94 — 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
Oil2400 bbl0 mcfcasinghead149,125,251 bblsince discovery
Gas4523185,035 mcf0 bblcondensate154,917,205 mcfsince 1970

The discovery well's oil measured 44.0° API gravity, perforated at 9,524 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB2005-03-08660 ft1,320 ft402,287 ft
OilB660 ft1,320 ft400 ft

Commission remarks: EACH OPERATOR HAS PRODUCED ITS FULL ALLOCATED SHARE.

County

Leases in this field

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

LeaseOperatorValue
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$136.8 M
WALTON, J. B.HILCORP ENERGY COMPANY$122.2 M
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$59.8 M
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$59.5 M
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$57.4 M
PURE-WALTONHILCORP ENERGY COMPANY$53.2 M
WALTON, J. B. -A-XTO ENERGY INC.$40.2 M
BASHARA, M. J.HILCORP ENERGY COMPANY$35.4 M
SOUTH KEYSTONE ELLENBURGER UNITBASIN OIL & GAS OPERATING, LLC$34.3 M
WALTON, J. B.HILCORP ENERGY COMPANY$26.9 M
WALTON, J. B.HILCORP ENERGY COMPANY$25.6 M
PURE WALTONXTO ENERGY INC.$20.1 M
PURE WALTONHILCORP ENERGY COMPANY$18.6 M
WALTON, J. B.HILCORP ENERGY COMPANY$16.7 M
SOUTH KESTONE ELLENBURGER UNITBASIN OIL & GAS OPERATING, LLC$14.8 M
WALTON, J. B. -A-BOPCO, L.P.$13.6 M
B A S HHILCORP ENERGY COMPANY$13.2 M
POGO WALTON BHILCORP ENERGY COMPANY$10.2 M
POGO WALTON BHILCORP ENERGY COMPANY$10.1 M
WALTON, J. B.HILCORP ENERGY COMPANY$10.0 M
WALTON, J. B.HILCORP ENERGY COMPANY$8.1 M
WALTON, J. B. "A"XTO ENERGY INC.$6.9 M
WALTON, J. B.HILCORP ENERGY COMPANY$6.8 M
SOUTH KEYSTONE/ELLEN/UNITBASIN OIL & GAS OPERATING, LLC$6.1 M
BASHARA, M. J.HILCORP ENERGY COMPANY$5.7 M
WALTON, J. B.HILCORP ENERGY COMPANY$5.0 M
SOUTH KEYSTONE/ELLEN/UNITBASIN OIL & GAS OPERATING, LLC$4.6 M
WALTON, J. B.HILCORP ENERGY COMPANY$4.3 M
WALTON, J. B.HILCORP ENERGY COMPANY$3.4 M
WALTON, J. B.HILCORP ENERGY COMPANY$2.5 M
PURE WALTONHILCORP ENERGY COMPANY$2.0 M
WALTON, J. B.BASS ENTERPRISES PRODUCTION CO.$1.8 M
WALTON, J. B.HILCORP ENERGY COMPANY$1.8 M
PURE-WALTONXTO ENERGY INC.$1.7 M
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$1.6 M
PURE-WALTONHILCORP ENERGY COMPANY$1.6 M
B A S HHILCORP ENERGY COMPANY$1.6 M
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$1.3 M
WALTON, J. B.HILCORP ENERGY COMPANY$1.0 M
WALTON, J.B. -A-HILCORP ENERGY COMPANY$761 k
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$686 k
SOUTH KEYSTONE/ELLEN/UNITBASIN OIL & GAS OPERATING, LLC$682 k
PURE WALTONBASS ENTERPRISES PRODUCTION CO.$596 k
PURE WALTONBASS ENTERPRISES PRODUCTION CO.$552 k
SOUTH KEYSTONE /ELLEN/ UNITPENNZOIL EXPLORATION & PROD. CO.$534 k
PURE-WALTONHILCORP ENERGY COMPANY$524 k
PURE-WALTONHILCORP ENERGY COMPANY$521 k
PURE WALTONBASS ENTERPRISES PRODUCTION CO.$467 k
SOUTH KEYSTONE /ELLEN/ UNITSTRONGHOLD ENERGY II OPER, LLC$466 k
PURE-WALTONHILCORP ENERGY COMPANY$452 k
JENKINS, B.F. ET AL (DEEP)XTO ENERGY INC.$419 k
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$383 k
SOUTH KEYSTONE /ELLEN/ UNITDEVON ENERGY PRODUCTION CO, L.P.$321 k
SOUTH KEYSTONE/ELLEN/UNITBASIN OIL & GAS OPERATING, LLC$276 k
PURE WALTONBASS ENTERPRISES PRODUCTION CO.$266 k
BASHARA, M. J.HILCORP ENERGY COMPANY$238 k
PURE- WALTONBASS ENTERPRISES PRODUCTION CO.$238 k
BASHBEPCO, L.P.$199 k
SOUTH KEYSTONE/ELLEN/UNITBASIN OIL & GAS OPERATING, LLC$161 k
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$122 k
BASHHILCORP ENERGY COMPANY$107 k
WALTON, J. B. "A"BASS ENTERPRISES PRODUCTION CO.$102 k
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$91 k
PURE-WALTONARCH PETROLEUM INC.$60 k
PURE WALTONBOPCO, L.P.$58 k
PURE WALTONBEPCO, L.P.$50 k
BASHBASS ENTERPRISES PRODUCTION CO.$49 k
B A S HHILCORP ENERGY COMPANY$40 k
BASHBASS ENTERPRISES PRODUCTION CO.$36 k
SOUTH KEYSTONE /ELLEN/ UNITBASIN OIL & GAS OPERATING, LLC$35 k
WALTON, J. B.HILCORP ENERGY COMPANY$31 k
WALTON, J. B.HILCORP ENERGY COMPANY$27 k
BASHBASS ENTERPRISES PRODUCTION CO.$9 k
PURE-WALTONXTO ENERGY INC.$4 k
PURE WALTONBASS ENTERPRISES PRODUCTION CO.
PURE WALTONARCH PETROLEUM INC.
SOUTH KEYSTONE (ELLEN) UNITDEVON ENERGY PRODUCTION CO, L.P.

Field number 49129330, from the Railroad Commission's field register. The register's own index resolves 94 leases and 250 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.