UNIVERSITY SEC. 18-A

Oil · District 7C · Lease #402

Operator: POLARIS PRODUCTION CORP.

Fields: CROCKETT

Cum Oil

84k BBL

Cum Gas

21 MCF

casinghead

Wells

9

Production

1993-01 — 2026-04

Peak Month

2010-04

Production History

Cum Oil: 84,495 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

397 BBL/mo

Di (annual)

3.7%

b-factor

0.0

EUR

109,555 BBL

R-squared

0.499

type

exponential

Operator History (from monthly production reports)

2024-02 — 2026-07 5STONE OPERATING INC 30 mo
1993-01 — 2024-01 POLARIS PRODUCTION CORP. 373 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
75STONE OPERATING INC21,6902010-01-19
142-105-010055STONE OPERATING INC------
242-461-004295STONE OPERATING INC------
342-461-004335STONE OPERATING INC------
442-461-300355STONE OPERATING INC------
542-461-300625STONE OPERATING INC------
642-461-300675STONE OPERATING INC------
842-461-304005STONE OPERATING INC------
9W42-461-304315STONE OPERATING INC------