OPERATORS · TEXAS · P-5 NUMBER 848310

Texas Vanguard Oil Company

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15 PERMITS · PAGE 1 OF 1 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
Aug 6, 2001	512288	Drill	Bastrop	King, W. S. #2	5,600	Final completion	02131545	Now Trivista Operating LLC
Jul 18, 2001	511358	Drill	Bastrop	Horn #2	5,600	Final completion	02131544	Now Trivista Operating LLC
Jul 27, 2000	497547	Drill	Bastrop	Lorenz, Adelia et AL #2	5,600	Final completion	02131542	Now Trivista Operating LLC
Apr 6, 1993	410343	Drill	Bastrop	Kelly "D" #4	5,350	Final completion	02131477	Acquired from Magna Oil & Gas Corporation
May 29, 1990	373820	Drill	Bastrop	L. F. O'Brien et al Unit #1	7,200	Final completion	02131354	Acquired from Kelpetro, Inc.
Sep 1, 1989	363490	Drill	Bastrop	Behrens-Gloger #1	5,600	Final completion	02131317	Acquired from Kelpetro, Inc.
Aug 9, 1988	349830	Drill	Bastrop	Carpenter #1	5,400	Final completion	02131243	Acquired from Oversea Oil Co.
Feb 29, 1988	342164	Drill	Bastrop	Boswell & Boswell #1	5,700	Final completion	02131164	Acquired from Mid-Western Oil & Gas, Inc.
Dec 7, 1987	339719	Drill	Bastrop	Liberty, Edwin P. #3	5,600	Final completion	02131134	Acquired from Coates Energy Trust
Nov 25, 1987	339381	Drill	Bastrop	Gloger #1	5,500	Final completion	02131127	Acquired from Magna Oil Corporation
Sep 29, 1987	336599	Drill	Bastrop	Petrash-Harris "A" #1	5,500	Final completion	02131101	Acquired from Maxwell Production Co., Inc.
Sep 4, 1987	335388	Drill	Bastrop	Liberty, Edwin P. #2	5,600	Final completion	02131083	Acquired from Coates Energy Trust
Aug 27, 1987	335164	Drill	Bastrop	Liberty, Edwin P. #1	5,600	Final completion	02131079	Acquired from Coates Energy Trust
Aug 5, 1987	334021	Drill	Bastrop	Barker Heirs #2	5,300	Final completion	02131070	Acquired from Sierra Minerals, Inc.
Jul 16, 1987	333035	Drill	Bastrop	Barker Heirs #1	5,350	Final completion	02131062	Acquired from Sierra Minerals, Inc.