1966 PARTNERSHIP

Oil · District 03 · Lease #21140

Operator: UPSTREAM RESOURCE PARTNERS, LLC

Cum Oil

176k BBL

Cum Gas

9 MCF

casinghead

Wells

6

Production

1993-01 — 2026-04

Peak Month

2004-11

Production History

Cum Oil: 176,419 BBL Cum Gas: 9 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,969 BBL/mo

Di (annual)

45.3%

b-factor

0.7

EUR

122,074 BBL

R-squared

0.775

type

hyperbolic

Operator History (from monthly production reports)

2022-10 — 2026-07 UPSTREAM RESOURCE PARTNERS, LLC 46 mo
2020-05 — 2022-09 TRIPLE "B" PRODUCTION DRLG INC 29 mo
2019-05 — 2020-04 STANDARD OIL COMPANY, INC. 12 mo
1994-03 — 2019-04 TRIPLE "B" PRODUCTION DRLG INC 302 mo
1993-01 — 1994-02 GULF TIDE OIL COMPANY, THE 14 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4UPSTREAM RESOURCE PARTNERS, LLC12,0002004-06-07
5UPSTREAM RESOURCE PARTNERS, LLC12,0002004-05-26
6UPSTREAM RESOURCE PARTNERS, LLC22,0002004-05-26
3UPSTREAM RESOURCE PARTNERS, LLC11,9992002-10-15
2UPSTREAM RESOURCE PARTNERS, LLC11,9992000-10-10
1UPSTREAM RESOURCE PARTNERS, LLC12,2001989-08-24