BLACK "18"

Oil · District 08 · Lease #35526

Operator: STEPHENS, AUTRY C.

Cum Oil

297k BBL

Cum Gas

412k MCF

casinghead

Wells

4

Production

1997-09 — 2025-01

Peak Month

1999-07

Production History

Cum Oil: 296,629 BBL Cum Gas: 411,865 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,566 BBL/mo

Di (annual)

14.3%

b-factor

0.3

EUR

286,558 BBL

R-squared

0.806

type

hyperbolic

Operator History (from monthly production reports)

2021-10 — 2026-07 DIAMONDBACK E&P LLC 58 mo
2018-11 — 2021-09 QEP ENERGY COMPANY 35 mo
2018-08 — 2018-10 PARSLEY ENERGY OPERATIONS, LLC 3 mo
2016-10 — 2018-07 GUIDON ENERGY MGMT SERVICES LLC 22 mo
2000-09 — 2016-09 ENDEAVOR ENERGY RESOURCES L.P. 193 mo
1997-09 — 2000-08 STEPHENS, AUTRY C. 36 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4DIAMONDBACK E&P LLC111,0001998-12-28
3DIAMONDBACK E&P LLC111,0001998-12-21
2GUIDON ENERGY MGMT SERVICES LLC211,0001997-06-10
1DIAMONDBACK E&P LLC111,0001997-05-30