COOK RANCH, District 7B, 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
62
with a page here
Operators
13
Value, all time
$135.0 M
68% of the register's 91
Discovered
1949-04-01
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 62 leases in this field that have a page here — 68% of the register's 91 — 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
Oil27416240,080 bbl0 mcfcasinghead14,376,284 bblsince discovery
Gas100 mcf0 bblcondensate105,451 mcfsince 1970

The discovery well's oil measured 37.0° API gravity, perforated at 1,200 ft.

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB1949-03-02100 ft150 ft00 ft

Commission remarks: ADOPTED TO GOVERN WELLS ABOVE 2000 FT.

County

Leases in this field

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

LeaseOperatorValue
COOK 62/83STASNEY WELL SERVICE, LLC$23.2 M
NEWELL, W. P., -A-DH OPERATING, INC.$23.1 M
NEWELL, W. P. -B-DH OPERATING, INC.$22.8 M
MATTHEWS, ANGI PASUBSEA OPERATING CO.$11.5 M
COOK RANCH 88STASNEY WELL SERVICE, LLC$8.1 M
NAIL 120 (M-J)TOM-TOM OPERATING, LLC$7.4 M
COOK, W. I.STASNEY WELL SERVICE, LLC$5.8 M
IVYSTASNEY WELL SERVICE, LLC$5.1 M
NAIL, J.H. 119TOM-TOM OPERATING, LLC$4.7 M
COOK RANCH 85WSSTASNEY WELL SERVICE, LLC$2.4 M
COOK -A-, SECTION 81STASNEY WELL SERVICE, LLC$2.2 M
COOK RANCH 60SHSTASNEY WELL SERVICE, LLC$2.2 M
STASNEY RANCH 62/63STASNEY WELL SERVICE, LLC$2.1 M
COOK RANCH "61"STASNEY WELL SERVICE, LLC$1.6 M
STASNEY RANCH 62STASNEY WELL SERVICE, LLC$1.5 M
COOK RANCH 113STASNEY WELL SERVICE, LLC$1.4 M
COOK -B- SEC. 113STASNEY WELL SERVICE, LLC$1.3 M
COOK RANCH "60S"STASNEY WELL SERVICE, LLC$1.2 M
NEWELL SEC. 86NCDJ OIL COMPANY, LLC$805 k
COOK, W. I., EST. -B- /SEC. 90/STASNEY WELL SERVICE, LLC$672 k
STASNEY 61STASNEY WELL SERVICE, LLC$669 k
NEWELL, W. P., EST.DH OPERATING, INC.$553 k
COOK, W. I. ESTATES SEC. /139A/STASNEY WELL SERVICE, LLC$544 k
COOK RANCH 114STASNEY WELL SERVICE, LLC$534 k
COOK RANCH 85STASNEY WELL SERVICE, LLC$495 k
COOK RANCH 58STASNEY WELL SERVICE, LLC$476 k
NAIL 120BLUFF CREEK PETROLEUM, LLC$302 k
IVY HJNS PRODUCTION, LLC$279 k
COOK RANCH 117STASNEY WELL SERVICE, LLC$243 k
NEWELL, W.P. "B"DH OPERATING, INC.$243 k
COOK RANCH 118HSTASNEY WELL SERVICE, LLC$198 k
NEWELL, W.P. "B"DH OPERATING, INC.$177 k
COOK RANCH 112 HSTASNEY WELL SERVICE, LLC$166 k
COOK RANCH 89STASNEY WELL SERVICE, LLC$163 k
COOK RANCH 63STASNEY WELL SERVICE, LLC$149 k
COOK "B" SEC.146STASNEY, H. R. & SONS, LTD.$137 k
COOK RANCH 111ASTASNEY WELL SERVICE, LLC$137 k
COOK RANCH 85SSTASNEY WELL SERVICE, LLC$108 k
COOK RANCH "116"STASNEY, H. R. & SONS, LTD.$84 k
COOK RANCH "60 H"STASNEY, H. R. & SONS, LTD.$63 k
COOK RANCH 54ASTASNEY WELL SERVICE, LLC$58 k
COOK RANCH 111HSTASNEY, H. R. & SONS, LTD.$53 k
COOK -A- SEC. 118STASNEY WELL SERVICE, LLC$48 k
COOK RANCHSTASNEY, H. R. & SONS, LTD.$46 k
COOK "A", SEC. 141YOUNG, MARSHALL R., OIL CO.$40 k
COOK-A- SECTION 116YOUNG, MARSHALL R., OIL CO.$38 k
COOK "A" SEC. 146YOUNG, MARSHALL R., OIL CO.$32 k
COOK RANCH 85WSSTASNEY WELL SERVICE, LLC$24 k
COOK RANCH 85WSSTASNEY WELL SERVICE, LLC$23 k
COOK RANCH 54HSTASNEY, H. R. & SONS, LTD.$23 k
NAIL 91AB P OPERATING COMPANY$20 k
COOK, W. I. EST. SEC. /139B/STASNEY, H. R. & SONS, LTD.$18 k
COOK RANCH 54HSTASNEY, H. R. & SONS, LTD.$13 k
COOK RANCH 54HSTASNEY, H. R. & SONS, LTD.$11 k
STASNEY COOK 88STASNEY WELL SERVICE, LLC$10 k
NAIL "137"SCHKADE, LOUIS$9 k
COOK "B" SEC 64STASNEY, H. R. & SONS, LTD.$8 k
COOK RANCH 54HSTASNEY, H. R. & SONS, LTD.$5 k
COOK RANCH 62HSTASNEY, H. R. & SONS, LTD.$3 k
NAIL "A"MARJAC OIL COMPANY, INC.$3 k
COOK RANCH 117DSTASNEY WELL SERVICE, LLC$1 k
NEWELL, W.P. 3-1SEQUOIA FOSSIL FUELS, INC.$781

Field number 20321001, from the Railroad Commission's field register. The register's own index resolves 91 leases and 853 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.