GRIGAR "A"

Oil · District 03 · Lease #17655

Operator: RECON OIL AND GAS INC.

Cum Oil

61k BBL

Cum Gas

12k MCF

casinghead

Wells

1

Production

1993-01 — 2014-05

Peak Month

1993-12

Production History

Cum Oil: 60,928 BBL Cum Gas: 11,891 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

485 BBL/mo

Di (annual)

7.5%

b-factor

0.0

EUR

75,820 BBL

R-squared

0.594

type

exponential

Operator History (from monthly production reports)

2008-10 — 2026-07 MASTODON OPERATING COMPANY, LLC 214 mo
2007-09 — 2008-09 HELIA TEC RESOURCES, INC. 13 mo
2007-04 — 2007-08 INTEGRITY PETROLEUM GROUP, INC. 5 mo
2002-06 — 2007-03 RECON OIL AND GAS INC. 58 mo
1994-10 — 2002-05 CARTER-LANGHAM, INC. 92 mo
1993-01 — 1994-09 PARTNERS OIL COMPANY 21 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MASTODON OPERATING COMPANY LLC18,7001984-03-14