GRANTHAM 50

Oil · District 08 · Lease #40756

Operator: DIAMONDBACK E&P LLC

Cum Oil

135k BBL

Cum Gas

525k MCF

casinghead

Wells

2

Production

2010-11 — 2026-04

Peak Month

2012-06

Production History

Cum Oil: 134,693 BBL Cum Gas: 525,214 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,344 BBL/mo

Di (annual)

297.0%

b-factor

0.8

EUR

103,674 BBL

R-squared

0.815

type

hyperbolic

Operator History (from monthly production reports)

2015-06 — 2026-07 DIAMONDBACK E&P LLC 134 mo
2010-11 — 2015-05 COBRA OIL & GAS CORPORATION 55 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2DIAMONDBACK E&P LLC212,0002012-02-15
1DIAMONDBACK E&P LLC412,0002011-03-17