COBLE "A"

Oil · District 8A · Lease #3565

Operator: SIERRA LIMA OIL & GAS, LLC

Fields: LEVELLAND

Cum Oil

1.1M BBL

Cum Gas

366k MCF

casinghead

Wells

24

Production

1993-01 — 2026-04

Peak Month

1993-08

Production History

Cum Oil: 1,109,682 BBL Cum Gas: 365,880 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,071 BBL/mo

Di (annual)

14.9%

b-factor

0.7

EUR

1,175,609 BBL

R-squared

0.963

type

hyperbolic

Operator History (from monthly production reports)

2025-12 — 2026-07 AVIATOR ENERGY, LLC 8 mo
2024-04 — 2025-11 SIERRA LIMA OIL & GAS, LLC 20 mo
2018-04 — 2024-03 SCOUT ENERGY MANAGEMENT LLC 72 mo
2017-05 — 2018-03 LINN OPERATING, LLC 11 mo
2009-10 — 2017-04 LINN OPERATING, INC. 91 mo
2004-05 — 2009-09 FOREST OIL PERMIAN CORPORATION 65 mo
1993-01 — 2004-04 MAYNARD OIL CO. 136 mo

Wells (24)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
23AVIATOR ENERGY, LLC26,0001998-05-27
28AVIATOR ENERGY, LLC15,0001994-02-24
27AVIATOR ENERGY, LLC15,0001993-06-18
22AVIATOR ENERGY, LLC15,0001993-04-30
21AVIATOR ENERGY, LLC25,0001993-02-22
20AVIATOR ENERGY, LLC15,1001991-12-30
12AAVIATOR ENERGY, LLC15,2001987-06-26
14AAVIATOR ENERGY, LLC15,2001987-06-26
16AAVIATOR ENERGY, LLC15,0001984-03-23
142-219-00974AVIATOR ENERGY, LLC------
1042-219-31166AVIATOR ENERGY, LLC------
11W42-219-31171AVIATOR ENERGY, LLC------
15W42-219-31178AVIATOR ENERGY, LLC------
17W42-219-31337AVIATOR ENERGY, LLC------
18WS42-219-82094AVIATOR ENERGY, LLC------
19WS42-219-82067AVIATOR ENERGY, LLC------
2W42-219-10538AVIATOR ENERGY, LLC------
342-219-00967AVIATOR ENERGY, LLC------
4W42-219-00976AVIATOR ENERGY, LLC------
542-219-00188AVIATOR ENERGY, LLC------
6W42-219-82059AVIATOR ENERGY, LLC------
742-219-00190AVIATOR ENERGY, LLC------
8W42-219-10539AVIATOR ENERGY, LLC------
9W42-219-30906AVIATOR ENERGY, LLC------