BILLINGS-GERHART UNIT

Oil · District 01 · Lease #13255

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

17k BBL

Cum Gas

22k MCF

casinghead

Wells

1

Production

1993-01 — 1996-07

Peak Month

1993-01

Production History

Cum Oil: 17,024 BBL Cum Gas: 21,643 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,133 BBL/mo

Di (annual)

605.8%

b-factor

1.5

EUR

30,095 BBL

R-squared

0.710

type

hyperbolic

Operator History (from monthly production reports)

2000-09 — 2018-01 ENDEAVOR ENERGY RESOURCES L.P. 209 mo
1997-05 — 2000-08 STEPHENS, AUTRY C. 40 mo
1994-12 — 1997-04 SABRE OPERATING, INC. 29 mo
1993-04 — 1994-11 TORCH OPERATING COMPANY 20 mo
1993-01 — 1993-03 UNION PACIFIC RESOURCES COMPANY 3 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ENDEAVOR ENERGY RESOURCES L.P.113,6001991-05-17