< leases

HEITZ, B.M.

Oil · District 01 · Lease #12350

Operator: TRINITY OPERATING (USG), LLC

Fields: PEARSALL (AUSTIN CHALK)

Cum Oil

350k BBL

Cum Gas

289k MCF

casinghead

Wells

3

Production

1993-01 — 2009-12

Peak Month

1993-05

Production History

Cum Oil: 350,376 BBL Cum Gas: 288,931 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,329 BBL/mo

Di (annual)

44.5%

b-factor

0.2

EUR

246,658 BBL

R-squared

0.559

type

hyperbolic

Operator History (from monthly production reports)

2023-10 — 2026-07 FLINT OAK ENERGY, LLC 34 mo
2018-02 — 2023-09 TRINITY OPERATING (USG), LLC 68 mo
2003-02 — 2018-01 TEXAS AMERICAN RESOURCES COMPANY 180 mo
1999-10 — 2003-01 KERR-MCGEE OIL & GAS ONSHORE LLC 40 mo
1999-04 — 1999-09 KERR-MCGEE CORPORATION 6 mo
1993-01 — 1999-03 ORYX ENERGY COMPANY 75 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-507-32257FLINT OAK ENERGY LLC29,2001999-02-02
342-507-32419FLINT OAK ENERGY LLC110,0001991-06-19
242-507-32332FLINT OAK ENERGY LLC110,1001990-06-04