CALVERT, A.

Oil · District 08 · Lease #19662

Operator: TEXAS ENEROIL

Cum Oil

25k BBL

Cum Gas

397 MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1997-07

Production History

Cum Oil: 25,400 BBL Cum Gas: 397 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

190 BBL/mo

Di (annual)

11.7%

b-factor

0.0

EUR

19,362 BBL

R-squared

0.454

type

exponential

Operator History (from monthly production reports)

2019-03 — 2026-07 STEPCO OIL & GAS, LLC 89 mo
1993-02 — 2019-02 STEPCO OIL & GAS CO. 313 mo
1993-01 — 1993-01 TEXAS ENEROIL 1 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2STEPCO OIL & GAS, LLC16,3001989-02-13
142-371-10479STEPCO OIL & GAS, LLC------