DORR -A-

Oil · District 08 · Lease #1168

Operator: UNITED RESOURCES, LP

Cum Oil

81k BBL

Cum Gas

17k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1998-10

Production History

Cum Oil: 80,684 BBL Cum Gas: 17,422 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

729 BBL/mo

Di (annual)

10.8%

b-factor

0.0

EUR

80,341 BBL

R-squared

0.650

type

exponential

Operator History (from monthly production reports)

2003-10 — 2026-07 QUATRO OIL AND GAS, INC. 274 mo
2003-07 — 2003-09 UNITED RESOURCES, LP 3 mo
2001-02 — 2003-06 UNITED OIL & MINERALS L. P. 29 mo
1996-06 — 2001-01 UNITED OIL & MINERALS, INC. 56 mo
1993-01 — 1996-05 OLSEN ENERGY INC. 41 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10RQUATRO OIL AND GAS, INC.12,8001998-03-20
542-475-00452QUATRO OIL AND GAS, INC.------
8 A42-475-30881QUATRO OIL AND GAS, INC.------
942-475-30862QUATRO OIL AND GAS, INC.------