ROBERTSON, JNO. D. -C-

Oil · District 7C · Lease #1968

Operator: MARATHON OIL COMPANY

Fields: SUSAN PEAK

Cum Oil

11k BBL

Cum Gas

33k MCF

casinghead

Wells

5

Production

1993-01 — 1997-12

Peak Month

1996-07

Production History

Cum Oil: 11,338 BBL Cum Gas: 33,396 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,015 BBL/mo

Di (annual)

252.1%

b-factor

0.0

EUR

9,625 BBL

R-squared

0.695

type

exponential

Operator History (from monthly production reports)

2000-10 — 2018-05 COMPASS OPERATING, L.L.C. 212 mo
2000-08 — 2000-09 CINCO RESOURCES OPERATING,L.L.C. 2 mo
1997-02 — 2000-07 COSTILLA ENERGY, INC. 42 mo
1994-11 — 1997-01 COSTILLA PETROLEUM CORPORATION 27 mo
1993-01 — 1994-10 MARATHON OIL COMPANY 22 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
28HCOMPASS OPERATING L.L.C.65,5001998-02-25
2COMPASS OPERATING, L.L.C.24,9481997-11-04
22COMPASS OPERATING L.L.C.15,0421991-04-16
21MARATHON OIL COMPANY15,0751985-06-26
142-451-00848COMPASS OPERATING L.L.C.------