< leases

MASSIE -A-

Oil · District 7C · Lease #1616

Operator: STEPHENS, AUTRY C.

Fields: SPRABERRY (TREND AREA)

Cum Oil

160k BBL

Cum Gas

211k MCF

casinghead

Wells

7

Production

1993-01 — 2026-03

Peak Month

1993-01

Production History

Cum Oil: 160,388 BBL Cum Gas: 211,240 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,483 BBL/mo

Di (annual)

12.1%

b-factor

0.0

EUR

146,910 BBL

R-squared

0.563

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2000-09 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 292 mo
1994-10 — 2000-08 STEPHENS, AUTRY C. 71 mo
1993-04 — 1994-09 PERMIAN RESOURCES, INC. 18 mo
1993-01 — 1993-03 RIDLEY & PRESTON 3 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-461-00863DIAMONDBACK E&P LLC19,2001995-08-07
242-461-03681DIAMONDBACK E&P LLC19,2001995-06-28
742-461-32401DIAMONDBACK E&P LLC18,8001985-05-07
642-461-32388DIAMONDBACK E&P LLC18,8001985-04-23
542-461-32168DIAMONDBACK E&P LLC18,8001984-03-29
442-383-32959DIAMONDBACK E&P LLC18,8001984-03-01
342-461-32077DIAMONDBACK E&P LLC18,8001983-10-11