GARDENDALE 12

Oil · District 08 · Lease #40668

Operator: SLANT OPERATING, LLC

Cum Oil

868k BBL

Cum Gas

3.5M MCF

casinghead

Wells

11

Production

2010-09 — 2026-04

Peak Month

2015-09

Production History

Cum Oil: 868,142 BBL Cum Gas: 3,463,043 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

21,244 BBL/mo

Di (annual)

99.6%

b-factor

0.7

EUR

669,327 BBL

R-squared

0.904

type

hyperbolic

Operator History (from monthly production reports)

2025-10 — 2026-07 DIAMONDBACK E&P LLC 10 mo
2022-12 — 2025-09 SLANT OPERATING, LLC 34 mo
2022-01 — 2022-11 CONTANGO RESOURCES, LLC 11 mo
2015-03 — 2021-12 FDL OPERATING, LLC 82 mo
2014-07 — 2015-02 LINN OPERATING, INC. 8 mo
2010-11 — 2014-06 BERRY OIL COMP. 44 mo
2010-09 — 2010-10 KEYSTONE PETROLEUM GP LLC 2 mo

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4DIAMONDBACK E&P LLC211,9002015-10-28
7DIAMONDBACK E&P LLC111,9002014-03-25
11DIAMONDBACK E&P LLC111,9002014-02-21
12DIAMONDBACK E&P LLC311,9002014-02-21
6DIAMONDBACK E&P LLC311,9002014-02-21
13DIAMONDBACK E&P LLC111,9002014-02-03
14DIAMONDBACK E&P LLC311,9002014-02-03
8DIAMONDBACK E&P LLC311,9002014-02-03
15DIAMONDBACK E&P LLC111,9002013-07-25
16DIAMONDBACK E&P LLC211,9002011-05-20
1DIAMONDBACK E&P LLC111,0002010-07-12