JOHNSTON

Oil · District 8A · Lease #62845

Operator: SIERRA LIMA OIL & GAS, LLC

Cum Oil

152k BBL

Cum Gas

4k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1999-03

Production History

Cum Oil: 152,022 BBL Cum Gas: 4,110 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,027 BBL/mo

Di (annual)

12.0%

b-factor

0.2

EUR

123,056 BBL

R-squared

0.956

type

hyperbolic

Operator History (from monthly production reports)

2025-12 — 2026-07 AVIATOR ENERGY, LLC 8 mo
2024-12 — 2025-11 SIERRA LIMA OIL & GAS, LLC 12 mo
2022-09 — 2024-11 BURK ROYALTY CO., LTD. 27 mo
1993-01 — 2022-08 ROCKER A OPERATING COMPANY 356 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4DAVIATOR ENERGY, LLC13,7961995-03-02
3AVIATOR ENERGY, LLC14,3001992-12-10
2AVIATOR ENERGY, LLC14,4001982-10-04
1AVIATOR ENERGY, LLC14,3001980-04-29