TEXAS UNIVERSITY -UU-

Oil · District 08 · Lease #36910

Operator: PIEDRA OPERATING, LLC

Fields: MAGUTEX (STRAWN)

Cum Oil

45k BBL

Cum Gas

60k MCF

casinghead

Wells

1

Production

2002-08 — 2025-09

Peak Month

2003-07

Production History

Cum Oil: 44,822 BBL Cum Gas: 60,415 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

293 BBL/mo

Di (annual)

30.1%

b-factor

0.4

EUR

18,398 BBL

R-squared

0.479

type

hyperbolic

Operator History (from monthly production reports)

2023-06 — 2026-07 OVINTIV USA INC. 38 mo

2018-11 — 2023-05 PIEDRA OPERATING, LLC 55 mo

2003-01 — 2018-10 CONOCOPHILLIPS COMPANY 190 mo

2002-08 — 2002-12 PHILLIPS PETROLEUM COMPANY 5 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
6	42-003-04730	OVINTIV USA INC.	1	11,140	1999-12-13