MAYO UNIT NO.1

Oil · District 09 · Lease #25140

Operator: SPRAGINS, ED

Cum Oil

21k BBL

Cum Gas

21 MCF

casinghead

Wells

1

Production

1993-01 — 2019-02

Peak Month

1996-04

Production History

Cum Oil: 20,631 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

112 BBL/mo

Di (annual)

11.5%

b-factor

1.3

EUR

24,892 BBL

R-squared

0.737

type

hyperbolic

Operator History (from monthly production reports)

2019-03 — 2021-06 COBRA OIL & GAS CORPORATION 28 mo
1993-01 — 2019-02 SPRAGINS, ED 314 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2COBRA OIL & GAS CORPORATION16,1001984-08-08