FOSTER -B-

Oil · District 09 · Lease #18204

Operator: HAVINS ENERGY

Cum Oil

9k BBL

Cum Gas

142 MCF

casinghead

Wells

10

Production

1993-01 — 2025-03

Peak Month

1998-06

Production History

Cum Oil: 9,056 BBL Cum Gas: 142 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

67 BBL/mo

Di (annual)

21.2%

b-factor

0.2

EUR

4,599 BBL

R-squared

0.565

type

hyperbolic

Operator History (from monthly production reports)

2020-04 — 2026-07 AZTECA OPERATING, INC. 76 mo
2016-01 — 2020-03 ACADIA OIL, LLC 51 mo
2005-03 — 2015-12 ALFARO & DARR, LLC 130 mo
1994-12 — 2005-02 B. J. OIL CO. OF IOWA PARK, TX. 123 mo
1993-01 — 1994-11 HAVINS ENERGY 23 mo

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11AZTECA OPERATING INC.11,0001992-01-02
8HAVINS ENERGY12,0001981-10-06
10BAZTECA OPERATING INC.11,0001978-07-31
7AZTECA OPERATING INC.11,0001978-07-31
9AZTECA OPERATING INC.11,0001978-07-31
6BAZTECA OPERATING INC.14001978-02-10
5AZTECA OPERATING, INC.13751977-07-05
142-485-33046AZTECA OPERATING INC.------
242-485-33786AZTECA OPERATING INC.------
442-485-33788AZTECA OPERATING INC.------