UNIVERSITY -D-

Oil · District 08 · Lease #27868

Operator: PIEDRA OPERATING, LLC

Fields: HUTEX (DEVONIAN)

Cum Oil

255k BBL

Cum Gas

393k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1994-06

Production History

Cum Oil: 254,636 BBL Cum Gas: 392,876 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,130 BBL/mo

Di (annual)

12.7%

b-factor

0.3

EUR

262,847 BBL

R-squared

0.844

type

hyperbolic

Operator History (from monthly production reports)

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

2017-07 — 2023-05 PIEDRA OPERATING, LLC 71 mo

2014-06 — 2017-06 FIVESTONES ENERGY LLC 37 mo

2010-04 — 2014-05 BURLESON PETROLEUM, INC. 50 mo

2009-08 — 2010-03 BURLESON, LEWIS B. INC. 8 mo

1993-01 — 2009-07 OILFIELD MANAGEMENT, INC. (A) 199 mo

Wells (4)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2025	42-003-33889	OVINTIV USA INC.	3	12,800	1999-11-24
3025	42-003-37104	OVINTIV USA INC.	4	12,800	1993-04-19
4025A	42-003-35007	OVINTIV USA INC.	1	12,700	1985-07-08
125	42-003-33084	OVINTIV USA INC.	2	12,621	1982-01-22