BUCHANAN

Oil · District 08 · Lease #21412

Operator: JM COX RESOURCES, L.P.

Cum Oil

583k BBL

Cum Gas

1.3M MCF

casinghead

Wells

13

Production

1993-01 — 2026-04

Peak Month

2000-05

Production History

Cum Oil: 583,035 BBL Cum Gas: 1,337,128 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,000 BBL/mo

Di (annual)

14.1%

b-factor

0.2

EUR

411,752 BBL

R-squared

0.917

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2019-07 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 66 mo
2018-08 — 2019-06 DE3 OPERATING LLC 11 mo
2003-10 — 2018-07 JM COX RESOURCES, L.P. 178 mo
1993-01 — 2003-09 COX, JOHN L. 129 mo

Wells (13)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
16DIAMONDBACK E&P LLC19,2002000-02-11
17DIAMONDBACK E&P LLC19,2002000-02-11
15DIAMONDBACK E&P LLC19,1001997-07-30
14DIAMONDBACK E&P LLC19,1001997-07-29
13DIAMONDBACK E&P LLC19,0001995-11-09
12DIAMONDBACK E&P LLC19,2001986-01-14
11DIAMONDBACK E&P LLC19,2001985-09-23
10DIAMONDBACK E&P LLC19,2001985-09-10
9DIAMONDBACK E&P LLC19,3001982-11-17
1XDIAMONDBACK E&P LLC19,2001980-08-14
242-329-30026DIAMONDBACK E&P LLC------
442-329-30031DIAMONDBACK E&P LLC------
542-329-30038DIAMONDBACK E&P LLC------