HOWARD-GLASSCOCK (GLORIETA), 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
95
with a page here
Operators
29
Value, all time
$417.9 M
73% of the register's 131
Discovered
1925-12-31
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 95 leases in this field that have a page here — 73% of the register's 131 — 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
Oil100 bbl0 mcfcasinghead46,438,469 bblsince discovery

This field filed no production for 2025. It remains on the Commission's schedules.

The discovery well's oil measured 26.0° API gravity, perforated at 3,200 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
OilB330 ft660 ft201,500 ft
OilO330 ft660 ft101,100 ft

Commission remarks: 11/22/11.

County

Leases in this field

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

LeaseOperatorValue
CHALK, OTISAPACHE CORPORATION$32.6 M
CHALK, OTISTRADITION RESOURCES LLC$24.8 M
CHALK, G. O. -C-CONOCOPHILLIPS COMPANY$22.1 M
REED BROS. DEMERIT ENERGY COMPANY$20.3 M
CHALK, MARYCONOCOPHILLIPS COMPANY$19.0 M
REED, L.R. & W.N.MERIT ENERGY COMPANY$17.4 M
DOUTHIT, E. W., -DE-MERIT ENERGY COMPANY$15.5 M
CHALK, G. O. -G-CONOCOPHILLIPS COMPANY$14.3 M
HOWARD GLASSCOCK EAST UNITAPACHE CORPORATION$13.9 M
CHALK-B DUNCANCONOCOPHILLIPS COMPANY$12.7 M
WARDERSHERIDAN PRODUCTION COMPANY, LLC$12.0 M
ROBERTS, DORAAPACHE CORPORATION$11.8 M
CHALK, G. O. -E-CONOCOPHILLIPS COMPANY$10.3 M
ROBERTS, DORA -BDE-SHERIDAN PRODUCTION COMPANY, LLC$9.6 M
REED -A-CONOCOPHILLIPS COMPANY$9.4 M
CLAY, H. R. -E-QUANTUM RESOURCES MANAGEMENT,LLC$9.3 M
SETTLES -D-SHERIDAN PRODUCTION COMPANY, LLC$8.3 M
CHALK, G. O. -B-CONOCOPHILLIPS COMPANY$8.3 M
CHALK, SLOANCONOCOPHILLIPS COMPANY$7.8 M
REED, W. N. & L. R.CONOCOPHILLIPS COMPANY$7.7 M
CHALK, G. O.CONOCOPHILLIPS COMPANY$7.7 M
HOOKSSOUTHWEST ROYALTIES, INC.$7.5 M
DOUTHIT-B 1CONOCOPHILLIPS COMPANY$7.1 M
CHALK -A-EXCEL ENERGY CO.$6.9 M
CHALK, OTISKEELEY OIL, L.L.C.$6.6 M
CHALK, G. O.CIMAREX ENERGY CO. OF COLORADO$6.5 M
CHALK, G. O. -D-CONOCOPHILLIPS COMPANY$5.5 M
CLAY, H. R. -A-QUANTUM RESOURCES MANAGEMENT,LLC$4.8 M
CHALK ESTATECONOCOPHILLIPS COMPANY$4.6 M
DOUTHIT, E. W., -C- DEMERIT ENERGY COMPANY$4.5 M
DOUTHITCONOCOPHILLIPS COMPANY$4.5 M
OWEN-CHALKCONOCOPHILLIPS COMPANY$4.3 M
HYMAN, SARAHCONOCOPHILLIPS COMPANY$3.7 M
ROBERTS, DORA, -A-SHERIDAN PRODUCTION COMPANY, LLC$3.3 M
G.O. CHALK "F"CONOCOPHILLIPS COMPANY$3.1 M
CHALK, G. O. "A"CONOCOPHILLIPS COMPANY$2.7 M
REED -B-CONOCOPHILLIPS COMPANY$2.6 M
HYMAN-CHALKCONOCOPHILLIPS COMPANY$2.4 M
DORIS CHALK -A-KEELEY OIL, L.L.C.$2.3 M
ST. LOUIESAHARA OPERATING COMPANY$2.1 M
ROBERTS, DORACONOCOPHILLIPS COMPANY$2.0 M
CHALK, MARYLEGACY RESERVES OPERATING LP$1.8 M
CLAY, H. R. -B-QUANTUM RESOURCES MANAGEMENT,LLC$1.8 M
SETTLES, W. R.SHERIDAN PRODUCTION COMPANY, LLC$1.7 M
CHALKMIRANDA ENERGY CORPORATION$1.6 M
HOOKS, A. J. A.BOYD & MCWILLIAMS ENERGY GROUP$1.6 M
COOPERMILLENNIUM RESOURCES, LP$1.5 M
HYMAN -E-BIG D ENERGY COMPANY$1.5 M
SCOTT, JOHNMILLENNIUM RESOURCES, LP$1.5 M
SETTLES, W. R. -A-CONOCOPHILLIPS COMPANY$1.4 M
CLAY, H. R. -C-QUANTUM RESOURCES MANAGEMENT,LLC$1.4 M
DOUTHIT GSOJOURNER DRILLING CORPORATION$1.2 M
HOOKSMOSS PETROLEUM COMPANY$1.2 M
DORIS CHALK -B-KEELEY OIL, L.L.C.$1.1 M
CHALKSAHARA OPERATING COMPANY$1.1 M
COLE, DORISLEGACY RESERVES OPERATING LP$1.1 M
DOUTHIT, E. W., -A- DEMERIT ENERGY COMPANY$1.0 M
ROBSHERIDAN PRODUCTION COMPANY, LLC$987 k
HOOKS, A. J.BOYD & MCWILLIAMS ENERGY GROUP$935 k
PEERLESS-CHALKSAHARA OPERATING COMPANY$798 k
JOHN B. BOWEN JR -A-CIRCLE H OIL COMPANY$781 k
HYMAN -H-BIG D ENERGY COMPANY$773 k
HEUSINGER, A. R.MARATHON OIL COMPANY$755 k
JOHN B. BOWEN JR -A-VANGUARD PRODUCTION COMPANY$754 k
MCDONALD, REEDCONOCOPHILLIPS COMPANY$702 k
SCOTT, R. C.MARATHON OIL COMPANY$659 k
PRICE-SCOTTMARATHON OIL COMPANY$533 k
HOOKSMIRANDA ENERGY CORPORATION$492 k
CLAY, H. R., -A-O'RYAN OIL AND GAS$460 k
CLAY, H. R., -B-O'RYAN OIL AND GAS$422 k
HYMAN -I-BIG D ENERGY COMPANY$382 k
KING, CAREYMARATHON OIL COMPANY$375 k
CHALK, OTISSAHARA OPERATING COMPANY$337 k
HYMAN -G-BIG D ENERGY COMPANY$330 k
EASON OIL CO.MARATHON OIL COMPANY$310 k
HYMAN, SARAH MINNAMARATHON OIL COMPANY$305 k
MOBIL-SCOTT, R.MARATHON OIL COMPANY$304 k
SETTLES -B-AETHON I LP$303 k
BATJER, PATTIENDEAVOR ENERGY RESOURCES L.P.$290 k
JOHN B. BOWEN, JR. "B"CIRCLE H OIL COMPANY$255 k
CLAY, H. R.QUANTUM RESOURCES MANAGEMENT,LLC$195 k
STOCKTON, W. E.MARATHON OIL COMPANY$194 k
RATLIFF, R. H.MARATHON OIL COMPANY$178 k
MCNALLEN, H. R. CLAYQUANTUM RESOURCES MANAGEMENT,LLC$178 k
WALLACE, R. J.MARATHON OIL COMPANY$139 k
HYMAN -F-BIG D ENERGY COMPANY$119 k
STOCKTON, W. E. -B-MARATHON OIL COMPANY$102 k
FUGLARR, I. J.MARATHON OIL COMPANY$89 k
REED -C-CONOCO INC.$84 k
TEX-HAN DOUTHITP4 OPERATING, LLC$65 k
DOUTHIT, MARYMILLENNIUM RESOURCES, LLC.$58 k
ROBERTS, DORAAPACHE CORPORATION$52 k
HYMAN -C-BIG D ENERGY COMPANY$23 k
DORA ROBERTS -D-GOLDEN SPECIALTIES OIL & GAS$7 k
MARIE HOLZWORTHTRIPLE "N" SERVICES, INC.$717

Field number 42971332, from the Railroad Commission's field register. The register's own index resolves 131 leases and 850 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.