GRANTHAM 13

Oil · District 10 · Lease #41438

Operator: DIAMONDBACK E&P LLC

Cum Oil

189k BBL

Cum Gas

0 MCF

Wells

5

Production

2011-04 — 2026-03

Peak Month

2012-10

Production History

Cum Oil: 189,382 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,239 BBL/mo

Di (annual)

15.1%

b-factor

0.0

EUR

178,365 BBL

R-squared

0.386

type

exponential

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4COBRA OIL & GAS CORPORATION212,0002014-02-11
3 ACOBRA OIL & GAS CORPORATION212,0002012-03-02
3COBRA OIL & GAS CORPORATION112,0002012-02-09
2COBRA OIL & GAS CORPORATION112,0002011-08-05
1COBRA OIL & GAS CORPORATION112,0002011-02-02
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