LEHMANN, D.J.

Oil · District 03 · Lease #19520

Operator: TRIVISTA OPERATING LLC

Cum Oil

23k BBL

Cum Gas

96k MCF

casinghead

Wells

2

Production

1993-01 — 2026-02

Peak Month

1993-04

Production History

Cum Oil: 23,134 BBL Cum Gas: 96,305 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

182 BBL/mo

Di (annual)

22.7%

b-factor

0.9

EUR

22,593 BBL

R-squared

0.806

type

hyperbolic

Operator History (from monthly production reports)

2013-10 — 2026-07 TRIVISTA OPERATING LLC 154 mo
1999-07 — 2013-09 TEXAS VANGUARD OIL COMPANY 171 mo
1993-01 — 1999-06 SAN ANTONIO GAS & OIL, INC. 78 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2TRIVISTA OPERATING LLC15,6001992-08-17
1TRIVISTA OPERATING LLC15,8001986-12-15