BLOCK A-34 (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
143
with a page here
Operators
8
Value, all time
$777.3 M
89% of the register's 160
Discovered
1979-03-16
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 143 leases in this field that have a page here — 89% of the register's 160 — 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
Oil319219597,457 bbl649,154 mcfcasinghead13,115,164 bblsince discovery

The discovery well's oil measured 34.0° API gravity, perforated at 4,676 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
OilB2016-11-01330 ft0 ft400 ft
OilO2016-11-01330 ft0 ft1099,999 ft

Commission remarks: OPTIONAL ACRES 10,NO MAX DIAGONAL, SALVAGE FIELD

County

Leases in this field

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

LeaseOperatorValue
ACU 5RING ENERGY, INC.$28.8 M
UNDERWOOD DRING ENERGY, INC.$27.9 M
FISHER BRING ENERGY, INC.$22.7 M
UNDERWOOD -C-RING ENERGY, INC.$19.8 M
FISHER AVIN FISHER OPERATING, INC.$18.7 M
FISHER CRING ENERGY, INC.$17.6 M
UNIVERSITY 14QRING ENERGY, INC.$17.3 M
PERSEPHONERING ENERGY, INC.$16.4 M
UNDERWOOD -B-RING ENERGY, INC.$15.2 M
PROSERPINARING ENERGY, INC.$14.7 M
VENUSRING ENERGY, INC.$14.3 M
HADRIANRING ENERGY, INC.$13.6 M
FISHER -5-VIN FISHER OPERATING, INC.$13.5 M
AUGUSTUSRING ENERGY, INC.$13.4 M
MEDUSARING ENERGY, INC.$13.2 M
WHITE, J. M.CITATION OIL & GAS CORP.$13.0 M
CETORING ENERGY, INC.$11.9 M
POLLUXRING ENERGY, INC.$11.7 M
FISHER -3-VIN FISHER OPERATING, INC.$11.7 M
PANRING ENERGY, INC.$11.2 M
HESTIARING ENERGY, INC.$11.1 M
ARMSTRONG, ELIZABETH M. ET ALCITATION OIL & GAS CORP.$11.1 M
FISHER -6-VIN FISHER OPERATING, INC.$11.0 M
FLAMSONRING ENERGY, INC.$10.4 M
DIANARING ENERGY, INC.$10.3 M
ERISRING ENERGY, INC.$10.1 M
CREWS, S.E.-MAST -8-VIN FISHER OPERATING, INC.$10.1 M
SIGHT FOR SORE EYESVIN FISHER OPERATING, INC.$10.0 M
METASRING ENERGY, INC.$9.6 M
CRONUSRING ENERGY, INC.$9.5 M
PALLASRING ENERGY, INC.$9.4 M
VESTARING ENERGY, INC.$9.1 M
MM FISHER BVIN FISHER OPERATING, INC.$9.1 M
CHAOSRING ENERGY, INC.$8.7 M
ZETASRING ENERGY, INC.$8.4 M
FISHER -10-VIN FISHER OPERATING, INC.$8.4 M
FLORARING ENERGY, INC.$8.4 M
FISHER -4-VIN FISHER OPERATING, INC.$8.3 M
WHITERING ENERGY, INC.$8.2 M
CERESRING ENERGY, INC.$7.8 M
UNDERWOOD ARING ENERGY, INC.$7.7 M
TIBERIUSRING ENERGY, INC.$6.3 M
ZENA WPRING ENERGY, INC.$6.1 M
ZENARING ENERGY, INC.$6.1 M
AURELIUSRING ENERGY, INC.$6.0 M
SCIPIORING ENERGY, INC.$5.9 M
WEST JOHN FISHERVIN FISHER OPERATING, INC.$5.8 M
MARIUSRING ENERGY, INC.$5.8 M
CILORING ENERGY, INC.$5.7 M
CAESARRING ENERGY, INC.$5.6 M
FISHER -8-VIN FISHER OPERATING, INC.$5.3 M
CREWS-MAST -9-VIN FISHER OPERATING, INC.$5.3 M
CREWS MAST -C-VIN FISHER OPERATING, INC.$5.2 M
FORTUNARING ENERGY, INC.$5.2 M
APOLLORING ENERGY, INC.$5.2 M
FEBRUUSRING ENERGY, INC.$5.2 M
FAUNARING ENERGY, INC.$5.1 M
12TH MAN STATEVIN FISHER OPERATING, INC.$5.0 M
FAMARING ENERGY, INC.$4.8 M
MURTIARING ENERGY, INC.$4.8 M
CYGNUSRING ENERGY, INC.$4.8 M
MEMNONRING ENERGY, INC.$4.8 M
PERSEUSRING ENERGY, INC.$4.7 M
VICTORIARING ENERGY, INC.$4.6 M
TYPHONRING ENERGY, INC.$4.4 M
COTTUSRING ENERGY, INC.$4.3 M
FISHER 16VIN FISHER OPERATING, INC.$4.3 M
BROMIOSRING ENERGY, INC.$4.0 M
OAKS STATEVIN FISHER OPERATING, INC.$4.0 M
CLAUDIUSRING ENERGY, INC.$3.9 M
FURINARING ENERGY, INC.$3.9 M
VOLTURNUSRING ENERGY, INC.$3.9 M
FALACERRING ENERGY, INC.$3.8 M
VULCANRING ENERGY, INC.$3.7 M
CHARITIESRING ENERGY, INC.$3.5 M
AJAXRING ENERGY, INC.$3.4 M
BLACK BALDYVIN FISHER OPERATING, INC.$3.3 M
ATHENARING ENERGY, INC.$3.3 M
VENTIRING ENERGY, INC.$3.1 M
THEARING ENERGY, INC.$3.1 M
UNIVERSITY 14RRING ENERGY, INC.$3.1 M
CUPIDRING ENERGY, INC.$2.9 M
TRITONRING ENERGY, INC.$2.8 M
CALYPSORING ENERGY, INC.$2.8 M
DEFORD-WHITE OIL UNITCITATION OIL & GAS CORP.$2.8 M
EAST JOHN FISHERVIN FISHER OPERATING, INC.$2.6 M
HELENARING ENERGY, INC.$2.5 M
RAIDER POWER STATEVIN FISHER OPERATING, INC.$2.4 M
CREWS-MAST, LTD.VIN FISHER OPERATING, INC.$2.3 M
ARTEMISRING ENERGY, INC.$2.3 M
STATE LUCKY STRIKEVIN FISHER OPERATING, INC.$2.3 M
MOIRAERING ENERGY, INC.$2.3 M
HECTORRING ENERGY, INC.$2.3 M
DEFORD WHITE OIL UNIT 2CITATION OIL & GAS CORP.$2.2 M
DEFORD, R KCITATION OIL & GAS CORP.$1.9 M
HERARING ENERGY, INC.$1.8 M
CREWS-MAST 8AVIN FISHER OPERATING, INC.$1.7 M
ATLASRING ENERGY, INC.$1.6 M
JUNIOR VARSITYVIN FISHER OPERATING, INC.$1.6 M
TYCHERING ENERGY, INC.$1.5 M
HAIR OF THE DOGVIN FISHER OPERATING, INC.$1.4 M
ZELOSRING ENERGY, INC.$1.4 M
APHRODITERING ENERGY, INC.$1.4 M
ARESRING ENERGY, INC.$1.4 M
VIRTUSRING ENERGY, INC.$1.4 M
FISHER -1-VIN FISHER OPERATING, INC.$1.2 M
HARRIS 3RING ENERGY, INC.$1.1 M
MARSRING ENERGY, INC.$1.1 M
MINERVARING ENERGY, INC.$1.1 M
CREWS-MAST "8B"VIN FISHER OPERATING, INC.$1.1 M
BALIUSRING ENERGY, INC.$1.0 M
JORDAN, AUGUSTAPARALLEL PETROLEUM LLC$1.0 M
PIG SOOIEVIN FISHER OPERATING, INC.$1.0 M
MEANS, R. M., ETAL -B-VIN FISHER OPERATING, INC.$898 k
BOREASRING ENERGY, INC.$883 k
ODYSSEUSRING ENERGY, INC.$804 k
MATTONRING ENERGY, INC.$794 k
ACU 5AVIN FISHER OPERATING, INC.$707 k
OCTAVIUSRING ENERGY, INC.$689 k
MEROPERING ENERGY, INC.$577 k
EAST HARRIS 2RING ENERGY, INC.$509 k
MENARING ENERGY, INC.$501 k
ARABIAN 3WTG EXPLORATION$431 k
ORIONRING ENERGY, INC.$417 k
CRIPPLED HORSEVIN FISHER OPERATING, INC.$414 k
J. M. WHITE 'A'CITATION OIL & GAS CORP.$362 k
THOROUGHBRED 11WTG EXPLORATION$306 k
OFFSHOOT 20WTG EXPLORATION$211 k
MORUSRING ENERGY, INC.$197 k
WAGGONEROXY USA INC.$163 k
MULEY DVIN FISHER OPERATING, INC.$140 k
MULEY CVIN FISHER OPERATING, INC.$121 k
ARMSTRONGVIN FISHER OPERATING, INC.$120 k
MAIARING ENERGY, INC.$100 k
MCQUATTERS, EUGENIARING ENERGY, INC.$58 k
BARBARAPARALLEL PETROLEUM LLC$50 k
ROMANRING ENERGY, INC.$23 k
QUARTER 3CROWNQUEST OPERATING, LLC$21 k
WHITE 'V'VIN FISHER OPERATING, INC.$16 k
FISHER -2-MIOCENE OIL & GAS, INC.$6 k
BIARING ENERGY, INC.$3 k
NEPTUNERING ENERGY, INC.
MULEY BVIN FISHER OPERATING, INC.

Field number 08958500, from the Railroad Commission's field register. The register's own index resolves 160 leases and 433 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.