OPERATORS · TEXAS · P-5 NUMBER 781922

Silverbrook Operating, LLC

WindowAll time 90 days 1 year 3 years 10 years

CountyWaller 53 Calhoun 36 Hardin 29 Liberty 13 Fort Bend 7 Jefferson 1 Madison 1

Type

140 FILINGS · 118 PERMITS · PAGE 2 OF 3 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
Sep 16, 2003	536491	Drill	Waller	Koomey #2	4,000	Final completion	47330849	Acquired from Property Development Group, Inc.
Aug 20, 2003	535572	Recompletion	Calhoun	Traylor, Maude B. #29	8,100	Final completion	05731536	Acquired from Gruy Petroleum Management Co.
Mar 31, 2003	530139	Drill	Liberty	Espree #1	13,000	Spudded	29132473	Acquired from Carrizo Oil & Gas, Inc.
Mar 31, 2003	530139Amendment	Drill	Liberty	Espree #1	13,000	—	29132473	Acquired from Carrizo Oil & Gas, Inc.
Mar 31, 2003	530139Amendment	Drill	Liberty	Espree #1	13,005	Final completion	29132473	Acquired from Carrizo Oil & Gas, Inc.
Nov 13, 2002	525453	Drill	Waller	Koomey #1	4,000	Final completion	47330786	Acquired from Property Development Group, Inc.
Jul 15, 2002	510651Amendment	Drill	Waller	Josey, Rabb #2	3,400	Final completion	47330659	Acquired from RTC Resources Inc
Nov 8, 2001	515148	Drill	Waller	Stowe #3	3,700	Final completion	47330712	Acquired from Property Development Group, Inc.
Oct 3, 2001	514148	Drill	Waller	Dachshund #14	3,300	Final completion	47330703	Acquired from Chief Operating Company
Aug 2, 2001	512164	Drill	Waller	Dachshund #1A	1,650	Unperforated completion	47330676	Acquired from Chief Operating Company
Jul 30, 2001	509193	Drill	Liberty	Canter Gas Unit #1	11,000	Spudded	29132396	Acquired from Carrizo Oil & Gas, Inc.
Jul 30, 2001	509193Amendment	Drill	Liberty	Canter Gas Unit #1	11,000	Final completion	29132396	Acquired from Carrizo Oil & Gas, Inc.
Jul 18, 2001	511570	Drill	Waller	Dachshund #13	3,300	Unperforated completion	47330671	Acquired from Chief Operating Company
Jul 12, 2001	511390	Drill	Waller	Litman #8	3,500	Final completion	47330669	Acquired from RTC Resources Inc
Jul 10, 2001	511279	Drill	Waller	Dachshund #12	3,200	Final completion	47330666	Acquired from Chief Operating Company
Jul 2, 2001	510984	Drill	Waller	Litman #7	3,500	Final completion	47330662	Acquired from RTC Resources Inc
Jun 22, 2001	510651	Drill	Waller	Josey, Rabb #2	3,200	—	47330659	Acquired from RTC Resources Inc
Jun 22, 2001	510648	Drill	Waller	Dachshund #11	3,300	Final completion	47330658	Acquired from Chief Operating Company
Jun 13, 2001	510251	Drill	Waller	Rabb Josey #1	3,500	Final completion	47330657	Acquired from RTC Resources Inc
May 25, 2001	509431	Drill	Waller	Dachshund #10	3,200	Final completion	47330651	Acquired from Chief Operating Company
Apr 27, 2001	508313	Drill	Waller	Dachshund #9	3,300	Final completion	47330641	Acquired from Chief Operating Company
Mar 19, 2001	506683	Drill	Waller	Dachshund #8	3,300	Final completion	47330634	Acquired from Chief Operating Company
Mar 15, 2001	506546	Drill	Waller	Dachshund #7	3,300	—	47330633	Acquired from Chief Operating Company
Mar 15, 2001	506546Amendment	Drill	Waller	Dachshund #7	3,300	Final completion	47330633	Acquired from Chief Operating Company
Feb 8, 2001	505079	Drill	Waller	Dachshund #6	3,300	Final completion	47330625	Acquired from Chief Operating Company
Jan 22, 2001	503479	Recompletion	Calhoun	Traylor, Maude B. #30	8,200	—	05731547	Acquired from Prize Operating Company
Jan 22, 2001	503479Amendment	Recompletion	Calhoun	Traylor, Maude B. #30	8,200	Final completion	05731547	Acquired from Prize Operating Company
Oct 3, 2000	500360	Recompletion	Calhoun	Traylor, Maude B. #29	8,100	Final completion	05731536	Acquired from Prize Operating Company
Jul 24, 2000	497568	Drill	Waller	Dachshund #5	3,300	Final completion	47330575	Acquired from Chief Operating Company
May 15, 2000	495050	Drill	Waller	Dachshund #4	3,300	Final completion	47330560	Acquired from Chief Operating Company
May 5, 2000	494782	Drill	Waller	Dachshund #3	4,300	Final completion	47330557	Acquired from Chief Operating Company
Apr 24, 2000	494403	Drill	Hardin	Hooks #5	6,000	Final completion	19932803	Acquired from Sedona Oil & Gas Corp.
Mar 31, 2000	493668	Drill	Waller	Dachshund #2	3,300	—	47330545	Acquired from Chief Operating Company
Mar 31, 2000	493668Amendment	Drill	Waller	Dachshund #2	3,300	Final completion	47330545	Acquired from Chief Operating Company
Mar 16, 2000	493167	Drill	Hardin	Terry #3	4,500	Final completion	19932800	Acquired from Gordy Oil Company
Mar 8, 2000	492879	Drill	Waller	Dachshund #1	3,000	Final completion	47330542	Acquired from Chief Operating Company
Feb 22, 2000	492298	Drill	Waller	Litman #5	3,200	Final completion	47330535	Acquired from RTC Resources Inc
Feb 3, 2000	491710	Drill	Waller	Litman #3	3,200	Final completion	47330534	Acquired from RTC Resources Inc
Jan 21, 2000	491301	Drill	Waller	Litman #4	3,200	Final completion	47330527	Acquired from RTC Resources Inc
Dec 17, 1999	490486	Drill	Waller	Litman #2	3,400	—	47330522	Acquired from RTC Resources Inc
Dec 17, 1999	490486Amendment	Drill	Waller	Litman #2	3,400	Final completion	47330522	Acquired from RTC Resources Inc
Dec 17, 1999	490485	Drill	Waller	Litman #1	3,400	Final completion	47330521	Acquired from RTC Resources Inc
Aug 4, 1999	486392	Drill	Hardin	Terry #1	4,300	Final completion	19932790	Acquired from Gordy Oil Company
Dec 21, 1998	481666	Drill	Hardin	Hooks #3	6,000	—	19932786	Acquired from Sedona Oil & Gas Corp.
Dec 21, 1998	481666Amendment	Drill	Hardin	Hooks #3	5,717	Final completion	19932786	Acquired from Sedona Oil & Gas Corp.
Jul 21, 1998	478020	Drill	Hardin	Hooks #2	6,000	Final completion	19932773	Acquired from Sedona Oil & Gas Corp.
May 12, 1998	476110	Drill	Fort Bend	Spira #1	3,600	Final completion	15732014	Acquired from Property Development Group, Inc.
Feb 12, 1998	473268	Reenter	Hardin	Hooks #1A	6,150	Final completion	19932763	Acquired from Sedona Oil & Gas Corp.
Nov 14, 1997	470088	Drill	Hardin	Hooks #1	6,000	Plugged dry hole (P&A)	19932763	Acquired from Sedona Oil & Gas Corp.
Oct 16, 1997	468889	Drill	Hardin	McBride Fee #4	6,000	Final completion	19932762	Acquired from Sedona Oil & Gas Corp.