RIO LLANO 11-10 A

Oil · District 08 · Lease #55385

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

1.1M BBL

Cum Gas

2.7M MCF

casinghead

Wells

3

Production

2021-01 — 2026-04

Peak Month

2021-10

Production History

Cum Oil: 1,143,462 BBL Cum Gas: 2,687,471 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

29,581 BBL/mo

Di (annual)

27.5%

b-factor

0.0

EUR

1,291,200 BBL

R-squared

0.477

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2021-01 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 48 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
113DIAMONDBACK E&P LLC211,0002024-03-14
111DIAMONDBACK E&P LLC215,0002020-11-12
212DIAMONDBACK E&P LLC215,0002020-11-12