SHAFTER LAKE, N. (SAN ANDRES), 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
70
with a page here
Operators
13
Value, all time
$1.04 bn
91% of the register's 77
Discovered
1952-10-03
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 70 leases in this field that have a page here — 91% of the register's 77 — 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
Oil273215583,389 bbl481,411 mcfcasinghead17,274,279 bblsince discovery

The discovery well's oil measured 31.2° API gravity, perforated at 4,559 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
OilB2015-01-27330 ft0 ft400 ft
OilO2015-01-27330 ft0 ft599,999 ft

Commission remarks: AMENDED, P15'S, ACRES LIST, AND LEASE 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
UL 13 DOVERRING ENERGY, INC.$45.2 M
STARKRING ENERGY, INC.$44.9 M
UL 14 CONWAYRING ENERGY, INC.$44.1 M
KENTRING ENERGY, INC.$43.4 M
UL 13 JAFFREYRING ENERGY, INC.$40.0 M
UNIVERSITY DMONTARE OPERATING, LTD.$39.6 M
UNIVERSITY 1801MONTARE OPERATING, LTD.$38.7 M
EARLENE FISHER STATE 17RING ENERGY, INC.$38.1 M
UNIVERSITY -H-MONTARE OPERATING, LTD.$37.0 M
WELBORN 20LIBERTAD OPERATING LLC$35.0 M
FISHER 4RING ENERGY, INC.$34.8 M
UNIVERSITY -A-MONTARE OPERATING, LTD.$33.7 M
UNIVERSITY A 4318MONTARE OPERATING, LTD.$29.7 M
WAYNERING ENERGY, INC.$28.4 M
UL13 KEENERING ENERGY, INC.$27.6 M
UB 13-14RING ENERGY, INC.$26.6 M
UNIVERSITY 14-16MONTARE OPERATING, LTD.$24.5 M
UL 14 OBERONRING ENERGY, INC.$23.9 M
UNIVERSITY 14-16 "D"MONTARE OPERATING, LTD.$23.6 M
UNIVERSITY -E-MONTARE OPERATING, LTD.$19.7 M
FISHER 8RING ENERGY, INC.$17.9 M
FISHER, MM ACRESCENT ENERGY OPERATING, LLC$17.5 M
FISHER 76RING ENERGY, INC.$17.5 M
FISHER 76CRING ENERGY, INC.$17.2 M
JAFFREYRING ENERGY, INC.$16.7 M
FISHER 5RING ENERGY, INC.$15.6 M
UL 13 HYPERIONRING ENERGY, INC.$15.4 M
UNIVERSITY 37MONTARE OPERATING, LTD.$15.3 M
KEENERING ENERGY, INC.$14.7 M
UL 13 DUBLIN SARING ENERGY, INC.$14.5 M
FISHER 9ARING ENERGY, INC.$14.4 M
UL 14 TRITONRING ENERGY, INC.$12.4 M
FISHER EVIN FISHER OPERATING, INC.$11.8 M
FISHER 9RING ENERGY, INC.$10.7 M
THOROUGHBRED 11WTG EXPLORATION$10.7 M
KENT ALIME ROCK RESOURCES IV-A, L.P.$9.5 M
FISHER 9BRING ENERGY, INC.$9.4 M
CREWS ESTATEVIN FISHER OPERATING, INC.$9.4 M
FISHER 76BRING ENERGY, INC.$8.9 M
FISHER 9CRING ENERGY, INC.$8.0 M
FISHER DVIN FISHER OPERATING, INC.$8.0 M
FISHER-GREAVES 5RING ENERGY, INC.$7.6 M
FISHER B5RING ENERGY, INC.$7.3 M
OFFSHOOT 20WTG EXPLORATION$6.5 M
FISHER/GREAVES 8LIME ROCK RESOURCES IV-A, L.P.$6.4 M
FISHER 76ARING ENERGY, INC.$6.3 M
FISHER AVIN FISHER OPERATING, INC.$6.2 M
FISHER A5RING ENERGY, INC.$5.7 M
ELKCRESCENT ENERGY OPERATING, LLC$5.6 M
WAYNE BRING ENERGY, INC.$5.6 M
CHAPARRALPARALLEL PETROLEUM LLC$5.1 M
EARLENE FISHER 17LIME ROCK RESOURCES IV-A, L.P.$3.5 M
UL 13 NASHUARING ENERGY, INC.$3.2 M
MILANPARALLEL PETROLEUM LLC$3.2 M
UNIVERSITY 38CMONTARE OPERATING, LTD.$2.8 M
UL13 OSSIPEERING ENERGY, INC.$2.7 M
LAKE BEDCITATION OIL & GAS CORP.$2.2 M
UNIVERSITY -A-4318AVALON TX OPERATING, LLC$2.0 M
FISHER BVIN FISHER OPERATING, INC.$1.8 M
MATADOR UNIVERSITYBURK ROYALTY CO., LTD.$1.0 M
UNIVERSITY 48BMONTARE OPERATING, LTD.$828 k
FISHER A8LIME ROCK RESOURCES IV-A, L.P.$762 k
TEXAS TEAPARALLEL PETROLEUM LLC$624 k
UNIVERSITY "I"CRESCENT ENERGY OPERATING, LLC$388 k
FIRENZELIME ROCK RESOURCES IV-A, L.P.$330 k
FISHER, M. M. -A-BYRD OPERATING COMPANY$45 k
TITANRING ENERGY, INC.$34 k
UNIVERSITY 14-22FORGE ENERGY, LLC$15 k
ATLASLIME ROCK RESOURCES IV-A, L.P.$705
PHOBOSRING ENERGY, INC.$78

Field number 82572666, from the Railroad Commission's field register. The register's own index resolves 77 leases and 314 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.