ROBERTSON, N. (SAN ANDRES), District 8A, 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
40
with a page here
Operators
18
Value, all time
$655.7 M
74% of the register's 54
Discovered
1976-02-20
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 40 leases in this field that have a page here — 74% of the register's 54 — 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
Oil613426,489 bbl8,281 mcfcasinghead15,923,157 bblsince discovery

The discovery well's oil measured 31.0° API gravity, perforated at 4,704 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
OilB1994-10-24330 ft660 ft402,000 ft
OilO1994-10-24330 ft660 ft201,500 ft

Commission remarks: PURSUANT TO DOCKET #OG-19-00001311 THIS FIELD WAS CONSOLIDATED

County

Leases in this field

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

LeaseOperatorValue
ROBERTSON (SAN ANDRES) UNITOCCIDENTAL PERMIAN EOR, LLC$230.8 M
SOUTH ROBERTSON (SAN ANDRES) U.CONTANGO RESOURCES, INC.$150.7 M
NORTH ROBERTSON SAN ANDRES UNITCITATION OIL & GAS CORP.$73.7 M
WHARTON, A. B. JR. "E" JOASABINAL ENERGY OPERATING, LLC$24.7 M
HENRYSEABOARD OPERATING CO.$24.2 M
MORTONRING ENERGY, INC.$21.0 M
WHARTON, A. B. JR. "A" JOASABINAL ENERGY OPERATING, LLC$18.4 M
EXXON FEE "B"CITATION OIL & GAS CORP.$17.9 M
EXXON-SHELL FEECITATION OIL & GAS CORP.$17.7 M
ELAMSABINAL ENERGY OPERATING, LLC$14.2 M
EXXON FEECITATION OIL & GAS CORP.$13.5 M
EXXON FEE "D"CITATION OIL & GAS CORP.$9.3 M
DOSS, M. S.CITATION OIL & GAS CORP.$7.5 M
WHARTON, A.B.JR."B"JOASABINAL ENERGY OPERATING, LLC$5.5 M
WHARTON, A.B.JR."C"JOASABINAL ENERGY OPERATING, LLC$4.9 M
ROBERTSON, J.B.SABINAL ENERGY OPERATING, LLC$2.7 M
MORTONPIERCE PRODUCTION COMPANY, LLC$2.5 M
EXXON SHELL FEE "C"CITATION OIL & GAS CORP.$2.4 M
KENDRICK, HAROLD H.CITATION OIL & GAS CORP.$2.3 M
EXXON-SHELL FEECITATION OIL & GAS CORP.$2.1 M
LANDRETHINJECT TECHNOLOGIES INC.$1.7 M
WHARTON, A. B. JR. SEC. 4CHEVRON U. S. A. INC.$1.4 M
WHARTON, A. B. JR. "D" JOASABINAL ENERGY OPERATING, LLC$1.4 M
ROBERTSON "E"LYNX OPERATING CO., INC.$1.4 M
DOSS, M. S.CHESAPEAKE OPERATING, INC.$1.3 M
ROBERTSON B (SA)NOBLE ENERGY INC$546 k
EXXON FEE EUBANKS "C"CITATION OIL & GAS CORP.$399 k
MOORE, M. A.SAMEDAN OIL CORPORATION$363 k
HUMBLE-SHELL FEECHESAPEAKE OPERATING, INC.$349 k
WOOD, L. R.SAMEDAN OIL CORPORATION$336 k
SAPOCCIDENTAL PERMIAN LTD.$195 k
ROBERTSONSTALLION ENERGY LLC$150 k
TALIAFERROHILCORP ENERGY COMPANY$87 k
ANDREWS "A"SAMEDAN OIL CORPORATION$65 k
HOLT, KATIE BELL "A"ENERGEN RESOURCES CORPORATION$58 k
ROBERTSON "SA"SAMEDAN OIL CORPORATION$36 k
WHARTONINCLINE ENERGY$20 k
RUDDENERGEN RESOURCES CORPORATION$8 k
WHARTON, A. B. JR. "23"CHEVRON U. S. A. INC.$3 k
ROBERTSON, J. B. '16'CHEVRON U. S. A. INC.$2 k

Field number 77318900, from the Railroad Commission's field register. The register's own index resolves 54 leases and 386 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.