OTB O'BRIEN 43

Oil · District 08 · Lease #39301

Operator: RESOLUTE NATURAL RES. CO., LLC

Cum Oil

262k BBL

Cum Gas

1.4M MCF

casinghead

Wells

7

Production

2009-01 — 2026-04

Peak Month

2011-02

Production History

Cum Oil: 262,418 BBL Cum Gas: 1,411,528 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,331 BBL/mo

Di (annual)

95.5%

b-factor

0.7

EUR

206,971 BBL

R-squared

0.696

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2016-06 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 103 mo
2015-05 — 2016-05 QSTAR OPERATING LLC 13 mo
2011-07 — 2015-04 RESOLUTE NATURAL RES. CO., LLC 46 mo
2009-01 — 2011-06 MAK-J ENERGY PARTNERS(TX),LTD. 30 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8DIAMONDBACK E&P LLC211,0002012-09-07
6DIAMONDBACK E&P LLC211,0002012-09-06
2DIAMONDBACK E&P LLC211,0002012-08-13
7DIAMONDBACK E&P LLC210,9002011-03-09
5DIAMONDBACK E&P LLC212,0002010-04-16
1DIAMONDBACK E&P LLC313,0002008-11-04
3DIAMONDBACK E&P LLC19,6002008-06-23