ST. CLAIR (GRANITE WASH), District 10, 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
201
with a page here
Operators
28
Value, all time
$895.7 M
96% of the register's 210
Discovered
1974-02-25
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 201 leases in this field that have a page here — 96% of the register's 210 — 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
Oil7558181,156 bbl1,679,598 mcfcasinghead5,115,480 bblsince discovery
Gas116721,210,389 mcf41,158 bblcondensate106,652,754 mcfsince 1970

The discovery well's oil measured 35.2° API gravity, perforated at 9,298 ft.

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB2012-08-21467 ft1,200 ft1604,500 ft
GasO2012-08-21467 ft1,200 ft803,250 ft
OilB2012-08-21467 ft1,200 ft402,100 ft

Commission remarks: THE ALLOCATION FORMULA SHALL REMAIN SUSPENDED.

County

Leases in this field

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

Showing the 200 largest of 201 leases, by the value we compute. Every one of them is in the sitemap.

LeaseOperatorValue
N MCMORDIE 125TEXAKOMA E & P, LLC$83.8 M
CROSBY 8TEXAKOMA E & P, LLC$58.4 M
MCMORDIE 84TEXAKOMA E & P, LLC$35.8 M
N. MCMORDIE 125TEXAKOMA OPERATING, L.P.$25.5 M
CHAMBERS 79MMGL TXPH, LLC$23.3 M
MCMORDIE 89PRESIDIO PETROLEUM LLC$20.7 M
MCMORDIE 88PRESIDIO PETROLEUM LLC$20.5 M
N MCMORDIE 124TEXAKOMA E & P, LLC$18.6 M
MCMORDIE CROSBYTEXAKOMA E & P, LLC$17.5 M
MILLS RANCH 8ACORLENA OIL COMPANY$16.0 M
E MCMORDIE 125TEXAKOMA E & P, LLC$13.5 M
TIPPS, O.R.CREST RESOURCES, INC.$11.1 M
MCMORDIE "86"MEWBOURNE OIL COMPANY$10.5 M
MCMORDIE "86"MEWBOURNE OIL COMPANY$10.1 M
CROSBY 8TEXAKOMA E & P, LLC$9.9 M
MCMORDIETEXAKOMA E & P, LLC$9.7 M
E. MCMORDIE 125TEXAKOMA E & P, LLC$9.6 M
MCMORDIEMEWBOURNE OIL COMPANY$9.5 M
MENDOTA RANCH 12BCE-MACH III LLC$9.3 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$8.6 M
MCMORDIE 13TEXAKOMA E & P, LLC$8.5 M
MCMORDIE "86"MEWBOURNE OIL COMPANY$8.4 M
N. MCMORDIE 9TEXAKOMA E & P, LLC$8.2 M
CHAMBERS 9TEXAKOMA E & P, LLC$7.8 M
MCMORDIE 89PRESIDIO PETROLEUM LLC$7.5 M
MCMORDIE 89PRESIDIO PETROLEUM LLC$7.4 M
MCMORDIEMMGL TXPH, LLC$7.4 M
MILLS RANCH 2BCORLENA OIL COMPANY$7.2 M
ROSIEVALPOINT OPERATING, LLC$7.1 M
JONESMEWBOURNE OIL COMPANY$6.8 M
MCMORDIE "86"MEWBOURNE OIL COMPANY$6.8 M
W. MCMORDIE 127TEXAKOMA E & P, LLC$6.7 M
MILLS RANCH 5ACORLENA OIL COMPANY$6.6 M
MCMORDIE 89PRESIDIO PETROLEUM LLC$6.2 M
MCMORDIEMMGL TXPH, LLC$6.2 M
MCMORDIEUNIT PETROLEUM COMPANY$6.0 M
MCMORDIE 26UNIT PETROLEUM COMPANY$6.0 M
MCMORDIEUNIT PETROLEUM COMPANY$6.0 M
KILLEBREW, C.P. ET ALAPACHE CORPORATION$5.8 M
JONESMMGL TXPH, LLC$5.6 M
MCMORDIE 126TEXAKOMA E & P, LLC$5.5 M
MCMORDIE "91"MEWBOURNE OIL COMPANY$5.4 M
CHRISTIE-TIPPSMMGL TXPH, LLC$5.4 M
MCMORDIE -128-MMGL TXPH, LLC$5.3 M
MCMORDIE -86-MMGL TXPH, LLC$5.3 M
CHRISTIE-TIPPS 77MEWBOURNE OIL COMPANY$5.2 M
CHRISTIE-TIPPS 77MEWBOURNE OIL COMPANY$5.1 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$5.0 M
MCMORDIE 90MEWBOURNE OIL COMPANY$4.9 M
N MCMORDIE 127TEXAKOMA E & P, LLC$4.9 M
MCMORDIEUNIT PETROLEUM COMPANY$4.8 M
MCMORDIE 26UNIT PETROLEUM COMPANY$4.8 M
MCMORDIE 84TEXAKOMA E & P, LLC$4.7 M
W. MCMORDIE 90TEXAKOMA E & P, LLC$4.6 M
N. MCMORDIE 124TEXAKOMA E & P, LLC$4.6 M
MCMORDIE "86"MEWBOURNE OIL COMPANY$4.4 M
MCMORDIE 90TEXAKOMA E & P, LLC$4.4 M
MCMORDIEUNIT PETROLEUM COMPANY$4.4 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$4.4 M
YOUNG 66 (ALLOCATION)MMGL TXPH, LLC$4.2 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$4.1 M
MCMORDIE "91"MEWBOURNE OIL COMPANY$4.1 M
MCMORDIEUNIT PETROLEUM COMPANY$4.0 M
MCMORDIE 26UNIT PETROLEUM COMPANY$4.0 M
MCMORDIEMMGL TXPH, LLC$3.9 M
MCMORDIE 90TEXAKOMA E & P, LLC$3.9 M
MCMORDIEMMGL TXPH, LLC$3.9 M
MCMORDIE 126VALPOINT OPERATING, LLC$3.9 M
TIPPS, O. R. "B"BCE-MACH II LLC$3.9 M
MCMORDIEMEWBOURNE OIL COMPANY$3.8 M
JONESMMGL TXPH, LLC$3.7 M
ADAMS 197PRESIDIO PETROLEUM LLC$3.7 M
JONESMEWBOURNE OIL COMPANY$3.7 M
MCMORDIE 84TEXAKOMA E & P, LLC$3.7 M
TIPPS, O. R.BCE-MACH II LLC$3.5 M
MARTIN, W.H.CREST RESOURCES, INC.$3.5 M
MCMORDIEMMGL TXPH, LLC$3.5 M
MCMORDIEUNIT PETROLEUM COMPANY$3.4 M
MCMORDIE 86MMGL TXPH, LLC$3.4 M
MCMORDIE "86"MEWBOURNE OIL COMPANY$3.3 M
CROSBY 12TEXAKOMA E & P, LLC$3.3 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$3.3 M
MCMORDIEMEWBOURNE OIL COMPANY$3.3 M
MCMORDIE 84TEXAKOMA E & P, LLC$3.3 M
CHRISTIE-TIPPS 77MMGL TXPH, LLC$3.1 M
MCMORDIEUNIT PETROLEUM COMPANY$3.0 M
MARTIN TRUST CPRESIDIO PETROLEUM LLC$3.0 M
CHRISTIE-TIPPS 77MEWBOURNE OIL COMPANY$3.0 M
MCMORDIE 91TEXAKOMA E & P, LLC$2.9 M
CHRISTIE-TIPPS 77MMGL TXPH, LLC$2.8 M
MCMORDIE 86MMGL TXPH, LLC$2.8 M
MCMORDIEUNIT PETROLEUM COMPANY$2.7 M
MARTIN 2CREST RESOURCES, INC.$2.6 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$2.6 M
JONESMMGL TXPH, LLC$2.6 M
MCMORDIE 84TEXAKOMA E & P, LLC$2.6 M
MARTIN, W. H.CREST RESOURCES, INC.$2.6 M
MCMORDIE 90TEXAKOMA E & P, LLC$2.5 M
CHRISTIE-TIPPS "A"BCE-MACH II LLC$2.5 M
MENDOTA RANCH 41BCE-MACH III LLC$2.5 M
MCMORDIEMMGL TXPH, LLC$2.4 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$2.4 M
W. MCMORDIE 13TEXAKOMA E & P, LLC$2.3 M
MCMORDIE 86MMGL TXPH, LLC$2.3 M
CHRISTIE-TIPPS 77MMGL TXPH, LLC$2.3 M
CHRISTIE-TIPPSMEWBOURNE OIL COMPANY$2.2 M
MCMORDIE 86BP AMERICA PRODUCTION COMPANY$2.2 M
MCMORDIEMEWBOURNE OIL COMPANY$2.2 M
MCMORDIEMMGL TXPH, LLC$2.2 M
CHRISTIE-TIPPS 77MMGL TXPH, LLC$2.1 M
JONESMEWBOURNE OIL COMPANY$2.1 M
CHRISTIE-TIPPS 77MMGL TXPH, LLC$2.1 M
MCMORDIE 91TEXAKOMA E & P, LLC$2.1 M
TIPPS, O.R.BCE-MACH II LLC$2.0 M
MCMORDIE 128MMGL TXPH, LLC$2.0 M
CHRISTIE-TIPPS "A" SEC 70BCE-MACH II LLC$2.0 M
CHRISTIE-TIPPS -A-QEP ENERGY COMPANY$1.9 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$1.9 M
MCMORDIEMEWBOURNE OIL COMPANY$1.9 M
CHRISTIE-TIPPS 77MMGL TXPH, LLC$1.9 M
MCMORDIE 26UNIT PETROLEUM COMPANY$1.8 M
N MCMORDIE 127TEXAKOMA E & P, LLC$1.8 M
MCMORDIE 86BP AMERICA PRODUCTION COMPANY$1.8 M
MCMORDIE 86BP AMERICA PRODUCTION COMPANY$1.7 M
JONESMMGL TXPH, LLC$1.7 M
KILLEBREWWHITE STRIDE LLC$1.7 M
E MCMORDIE 125TEXAKOMA E & P, LLC$1.7 M
JONESMMGL TXPH, LLC$1.7 M
LEONA 8AHADAWAY CONSULT AND ENGINEER,LLC$1.7 M
CHRISTIE-TIPPSMMGL TXPH, LLC$1.6 M
MCMORDIEUNIT PETROLEUM COMPANY$1.6 M
RASORBE ANADARKO II, LLC$1.6 M
MCMORDIE 91TEXAKOMA OPERATING, L.P.$1.6 M
KILLEBREW, C.P. ET ALPRESIDIO PETROLEUM LLC$1.5 M
MCMORDIEMMGL TXPH, LLC$1.5 M
JONESMMGL TXPH, LLC$1.5 M
MCMORDIE 89APACHE CORPORATION$1.4 M
TIPPS, CHRISTIE "A"BCE-MACH II LLC$1.4 M
MCMORDIEUNIT PETROLEUM COMPANY$1.4 M
MARTIN, W. H.AGHORN OPERATING, INC.$1.4 M
JONESMEWBOURNE OIL COMPANY$1.3 M
MCMORDIE 26UNIT PETROLEUM COMPANY$1.2 M
MCMORDIE 88PRESIDIO PETROLEUM LLC$1.2 M
MCMORDIE 23TEXAKOMA E & P, LLC$1.1 M
MCMORDIE 128MMGL TXPH, LLC$1.1 M
MCMORDIEBP AMERICA PRODUCTION COMPANY$1.1 M
W. MCMORDIE 127TEXAKOMA E & P, LLC$1.1 M
MCMORDIE 4-125TEXAKOMA E & P, LLC$1.1 M
MCMORDIEUNBRIDLED RESOURCES, LLC$1.0 M
MCMORDIE 89PRESIDIO PETROLEUM LLC$996 k
MCMORDIE 26UNIT PETROLEUM COMPANY$993 k
CHRISTIE TIPPSBE ANADARKO II, LLC$957 k
W. MCMORDIE 127VALPOINT OPERATING, LLC$954 k
CHRISTIE-TIPPS 77BP AMERICA PRODUCTION COMPANY$871 k
MCMORDIEMMGL TXPH, LLC$856 k
CBSAMSON LONE STAR, LLC$845 k
MCMORDIE 90TEXAKOMA OPERATING, L.P.$794 k
MCMORDIEMMGL TXPH, LLC$768 k
TIPPS, O. R.AGHORN OPERATING, INC.$764 k
CHRISTIE-TIPPSBP AMERICA PRODUCTION COMPANY$746 k
N MCMORDIE 125TEXAKOMA E & P, LLC$727 k
CHRISTIE-TIPPSMMGL TXPH, LLC$701 k
PARSELL RANCHCIMARRON ENGINEERING, LLC$670 k
MCMORDIE 90TEXAKOMA OPERATING, L.P.$658 k
MCMORDIE 24TEXAKOMA E & P, LLC$635 k
MCMORDIEMEWBOURNE OIL COMPANY$630 k
TIPPS, CHRISTIEMMGL TXPH, LLC$620 k
MCMORDIE 86AMOCO PRODUCTION COMPANY$609 k
CHRISTIE-TIPPS 77MEWBOURNE OIL COMPANY$598 k
N MCMORDIE 10TEXAKOMA E & P, LLC$582 k
MCMORDIEBP AMERICA PRODUCTION COMPANY$492 k
CHAMBERS 9TEXAKOMA E & P, LLC$488 k
N MCMORDIE 125TEXAKOMA E & P, LLC$487 k
MCMORDIE 84TEXAKOMA OPERATING, L.P.$473 k
MCMORDIEBP AMERICA PRODUCTION COMPANY$472 k
MCMORDIE 91TEXAKOMA OPERATING, L.P.$355 k
VOLMERTMMGL TXPH, LLC$303 k
W.H. CLARKBE ANADARKO II, LLC$286 k
E MCMORDIE 125TEXAKOMA E & P, LLC$282 k
MARYVALPOINT OPERATING, LLC$233 k
CROSBY 12TEXAKOMA E & P, LLC$180 k
MCMORDIE 11TEXAKOMA E & P, LLC$165 k
RUSSELLWINRIGHT RESOURCES OPERATING,LLC$148 k
ERINVALPOINT OPERATING, LLC$128 k
ISAACS 1CIMAREX ENERGY CO.$128 k
PAYNE -A-HADAWAY CONSULT AND ENGINEER,LLC$115 k
JONESBP AMERICA PRODUCTION COMPANY$114 k
CHRISTIE-TIPPSAMOCO PRODUCTION COMPANY$112 k
CHRISTIE-TIPPS 77MMGL TXPH, LLC$85 k
MARIEAPACHE CORPORATION$61 k
EWINGBE ANADARKO II, LLC$59 k
MCMORDIE 84TEXAKOMA OPERATING, L.P.$58 k
CHAMBERS 119LADDEX, LTD.$51 k
MCMORDIE 89PRESIDIO PETROLEUM LLC$51 k
MCMORDIE 11TEXAKOMA E & P, LLC$49 k
CLEM 'A'H & L EXPLORATION COMPANY, LLC$41 k
N MCMORDIE 10TEXAKOMA E & P, LLC$36 k
MARTIN, W. H.CREST RESOURCES, INC.$32 k
MARTIN-CLARKKAISER-FRANCIS OIL COMPANY$15 k
CAMPBELL, J.W. UNITLONE TREE OIL & GAS LLC$5 k

Field number 79636500, from the Railroad Commission's field register. The register's own index resolves 210 leases and 255 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.