MAYO, JOE UNIT #1

Oil · District 09 · Lease #21222

Operator: SPRAGINS, ED

Cum Oil

99k BBL

Cum Gas

38k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

1996-04

Production History

Cum Oil: 99,249 BBL Cum Gas: 37,678 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

406 BBL/mo

Di (annual)

5.5%

b-factor

0.6

EUR

105,950 BBL

R-squared

0.590

type

hyperbolic

Operator History (from monthly production reports)

2019-03 — 2026-07 COBRA OIL & GAS CORPORATION 89 mo
1993-01 — 2019-02 SPRAGINS, ED 314 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1COBRA OIL & GAS CORPORATION16,1501981-06-19