KNICKERBOCKER, J. -A-

Oil · District 01 · Lease #3860

Operator: ROLLERT CO., INC., THE

Fields: DUNLAP

Cum Oil

101k BBL

Cum Gas

33k MCF

casinghead

Wells

21

Production

1993-01 — 2026-04

Peak Month

1997-01

Production History

Cum Oil: 100,890 BBL Cum Gas: 32,666 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

952 BBL/mo

Di (annual)

19.2%

b-factor

0.4

EUR

90,053 BBL

R-squared

0.910

type

hyperbolic

Operator History (from monthly production reports)

2026-01 — 2026-07 GAUGE OIL COMPANY 7 mo
2014-08 — 2025-12 COLBY PRODUCTION RESOURCES, LLC 137 mo
2000-09 — 2014-07 FIVE STAR ENERGY, INC. 167 mo
1993-01 — 2000-08 ROLLERT CO., INC., THE 92 mo

Wells (21)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
21GAUGE OIL COMPANY12,4001981-12-21
22GAUGE OIL COMPANY12,4001981-12-21
23GAUGE OIL COMPANY12,4001981-12-21
24GAUGE OIL COMPANY12,4001981-12-21
18GAUGE OIL COMPANY12,3751981-10-15
20GAUGE OIL COMPANY12,3751981-10-15
17GAUGE OIL COMPANY12,3751980-06-27
1042-187-03345GAUGE OIL COMPANY------
1142-187-03346GAUGE OIL COMPANY------
1242-187-03364GAUGE OIL COMPANY------
1342-187-30005GAUGE OIL COMPANY------
1442-187-30019GAUGE OIL COMPANY------
1542-187-30019GAUGE OIL COMPANY------
1642-187-30020GAUGE OIL COMPANY------
1WD42-187-80704GAUGE OIL COMPANY------
242-187-03253GAUGE OIL COMPANY------
342-187-03255GAUGE OIL COMPANY------
642-187-03213GAUGE OIL COMPANY------
742-187-03214GAUGE OIL COMPANY------
842-187-03347GAUGE OIL COMPANY------
942-187-03348GAUGE OIL COMPANY------