SHERROD UNIT

Oil · District 9 · Lease #4947

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

5.2M BBL

Cum Gas

0 MCF

Wells

172

Production

1993-01 — 2026-03

Peak Month

2010-06

Production History

Cum Oil: 5,249,741 BBL Cum Gas: 0 MCF

Decline Curve Analysis

47,435 BBL/mo

Di (annual)

25.2%

b-factor

0.0

EUR

2,261,120 BBL

R-squared

0.920

type

exponential

Wells (172)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2116	42-383-36692	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-04-09
2118W	42-383-36681	PIONEER NATURAL RES. USA, INC.	1	8,400	2010-04-06
3609	42-383-36684	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-04-06
2417	42-383-36688	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-19
2419	42-383-36690	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-19
2423	42-383-36689	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-19
2326	42-383-36674	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-16
2327	42-383-36676	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-16
2117	42-383-36670	PIONEER NATURAL RES. USA, INC.	1	9,200	2010-02-12
2319	42-383-36671	PIONEER NATURAL RES. USA, INC.	1	9,200	2010-02-12
2322	42-383-36672	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-12
2324	42-461-36582	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-12
2325W	42-383-36673	PIONEER NATURAL RES. USA, INC.	1	8,500	2010-02-12
1205	42-383-36661	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
1206	42-383-36662	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
1207	42-383-36664	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
1208	42-383-36665	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
1302	42-383-36669	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
2114W	42-383-36667	PIONEER NATURAL RES. USA, INC.	1	8,500	2010-02-11
2115	42-383-36668	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-11
2316	42-461-36577	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
2317	42-383-36666	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
2318	42-461-36578	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-02-11
2002	42-383-36646	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-02
1403	42-383-36644	PIONEER NATURAL RES. USA, INC.	1	9,000	2010-02-01
1811	42-461-36528	PIONEER NATURAL RES. USA, INC.	1	8,900	2010-01-21
1817	42-383-36635	PIONEER NATURAL RES. USA, INC.	1	8,900	2010-01-21
1011	42-461-36510	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-01-13
1012W	42-383-36631	PIONEER NATURAL RES. USA, INC.	1	8,500	2010-01-13
1103	42-461-36511	PIONEER NATURAL RES. USA, INC.	1	9,100	2010-01-13
1511	42-383-36587	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-12-11
1513	42-383-36585	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-11-16
1507	42-383-36579	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-11-13
1508	42-383-36577	PIONEER NATURAL RES. USA, INC.	1	8,900	2009-11-13
1509	42-383-36578	PIONEER NATURAL RES. USA, INC.	1	8,900	2009-11-13
1510	42-383-36580	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-11-13
1816	42-461-36442	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-10-30
1904W	42-383-36565	PIONEER NATURAL RES. USA, INC.	1	8,400	2009-10-30
1903	42-383-36568	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-10-29
1405W	42-383-36567	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-10-28
1512	42-383-36562	PIONEER NATURAL RES. USA, INC.	1	9,000	2009-10-23
1812	42-383-36563	PIONEER NATURAL RES. USA, INC.	2	9,050	2009-10-23
1815	42-461-36527	PIONEER NATURAL RES. USA, INC.	2	8,900	2009-10-23
1819	42-461-36441	PIONEER NATURAL RES. USA, INC.	1	8,900	2009-10-23
1404	42-383-36557	PIONEER NATURAL RES. USA, INC.	1	8,900	2009-10-21
711	42-383-36284	PIONEER NATURAL RES. USA, INC.	1	8,900	2008-07-07
3204	42-383-36258	PIONEER NATURAL RES. USA, INC.	1	8,725	2008-06-19
2320	42-383-36244	PIONEER NATURAL RES. USA, INC.	1	8,750	2008-06-16
3705	42-383-36248	PIONEER NATURAL RES. USA, INC.	1	8,800	2008-06-16
3805	42-383-36249	PIONEER NATURAL RES. USA, INC.	1	8,850	2008-06-16
3807	42-383-36251	PIONEER NATURAL RES. USA, INC.	1	8,825	2008-06-16
1703	42-383-36247	PIONEER NATURAL RES. USA, INC.	1	8,825	2008-06-13
1818	42-383-36242	PIONEER NATURAL RES. USA, INC.	1	8,775	2008-06-13
1818W	42-383-36242	PIONEER NATURAL RES. USA, INC.	1	8,775	2008-06-13
2415	42-383-36245	PIONEER NATURAL RES. USA, INC.	1	8,750	2008-06-13
2421	42-383-36250	PIONEER NATURAL RES. USA, INC.	1	8,725	2008-06-13
2602	42-383-36246	PIONEER NATURAL RES. USA, INC.	1	8,775	2008-06-13
603	42-383-35804	PIONEER NATURAL RES. USA, INC.	1	8,650	2006-06-22
709	42-383-35803	PIONEER NATURAL RES. USA, INC.	1	8,600	2006-06-22
2702	42-383-35790	PIONEER NATURAL RES. USA, INC.	1	8,625	2006-05-19
2918	42-383-35791	PIONEER NATURAL RES. USA, INC.	1	8,625	2006-05-19
2321	42-461-35089	PIONEER NATURAL RES. USA, INC.	1	8,675	2006-05-15
207	42-461-35073	PIONEER NATURAL RES. USA, INC.	2	8,725	2006-04-06
208	42-461-35075	PIONEER NATURAL RES. USA, INC.	1	8,725	2006-04-06
209	42-461-35074	PIONEER NATURAL RES. USA, INC.	1	8,725	2006-04-06
304	42-461-35076	PIONEER NATURAL RES. USA, INC.	1	8,700	2006-04-06
510	42-383-35769	PIONEER NATURAL RES. USA, INC.	1	8,650	2006-04-06
1104	42-461-35030	PIONEER NATURAL RES. USA, INC.	1	8,670	2006-03-06
3907	42-383-35728	PIONEER NATURAL RES. USA, INC.	1	8,500	2006-02-27
2208	42-383-35694	PIONEER NATURAL RES. USA, INC.	1	8,480	2006-01-11
4004	42-383-35693	PIONEER NATURAL RES. USA, INC.	1	8,500	2006-01-11
2206	42-383-35681	PIONEER NATURAL RES. USA, INC.	1	8,480	2005-12-28
2416	42-383-35682	PIONEER NATURAL RES. USA, INC.	1	8,570	2005-12-28
3611	42-383-35683	PIONEER NATURAL RES. USA, INC.	1	8,535	2005-12-28
3614	42-383-35684	PIONEER NATURAL RES. USA, INC.	1	8,490	2005-12-28
3906	42-383-35685	PIONEER NATURAL RES. USA, INC.	1	8,460	2005-12-28
1603	42-383-35680	PIONEER NATURAL RES. USA, INC.	1	8,525	2005-12-27
1814	42-461-34983	PIONEER NATURAL RES. USA, INC.	1	8,650	2005-12-27
1814W	42-461-34983	PIONEER NATURAL RES. USA, INC.	1	8,650	2005-12-27
2113	42-383-35205	PIONEER NATURAL RES. USA, INC.	1	8,800	2002-01-31
810	42-383-35204	PIONEER NATURAL RES. USA, INC.	1	8,800	2002-01-31
102	42-461-34240	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-18
508	42-383-35202	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-18
1810	42-461-34239	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-11
2413	42-383-35200	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-11
2414	42-383-35199	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-11
1809	42-461-34238	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
2112	42-383-35196	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
2112 W	42-383-35196	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
3201	42-383-35198	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
3202	42-383-35197	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
3605	42-383-35195	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
3606	42-383-35194	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-07
809	42-383-35193	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-05
1004	42-383-35189	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-04
2914	42-383-35188	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-12-04
2801	42-383-35183	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-11-15
1005	42-461-34233	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
1006	42-461-34234	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
2701	42-383-35181	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
2915	42-383-35182	PIONEER NATURAL RES. USA, INC.	2	8,800	2001-10-30
3607	42-383-35180	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
3608	42-383-35177	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
3703	42-383-35178	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
3704	42-383-35179	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-10-30
101	42-461-00393	EXXON MOBIL CORPORATION	1	8,000	2001-05-24
1203	42-383-35167	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-22
1506	42-383-35168	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-22
1702	42-383-35170	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-22
2001	42-383-35165	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-22
2501	42-461-34199	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-22
2601	42-383-35166	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-22
2111	42-383-35160	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-16
2409	42-383-35161	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-16
2409W	42-383-35161	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-16
2410	42-383-35159	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-16
2411	42-383-35164	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-16
2412	42-383-35163	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-16
302	42-383-35162	PIONEER NATURAL RES. USA, INC.	2	8,800	2001-05-16
1602	42-383-35151	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
1808	42-461-34186	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
2204	42-383-35152	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
2205	42-383-35153	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
3803	42-383-35154	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
3804	42-383-35155	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
3903	42-383-35156	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
904	42-383-35150	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-10
205	42-461-34178	PIONEER NATURAL RES. USA, INC.	2	8,800	2001-05-03
2110	42-383-35146	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
2203	42-383-35148	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
2309	42-383-35147	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
2313	42-461-34177	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
2314	42-383-35143	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
2315	42-461-34176	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
3904	42-383-35145	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
602	42-383-35138	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
706	42-383-35140	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
707	42-383-35139	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
807	42-383-35141	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
808	42-383-35144	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
903	42-383-35142	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-05-03
705	42-383-35137	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-04-19
1402	42-383-35135	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-04-17
1804	42-383-35134	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-04-17
1807	42-461-34171	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-04-17
1902	42-383-35136	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-04-17
1310	42-383-35133	PIONEER NATURAL RES. USA, INC.	1	8,800	2001-04-11
502	42-383-34122	EXXON CORP.	1	8,500	1991-08-26
1301	42-383-34113	EXXON CORP.	1	8,500	1991-08-01
4002	42-383-34114	EXXON CORP.	1	8,500	1991-07-31
501	42-383-34015	EXXON CORP.	1	8,300	1990-06-25
1003	42-461-33040	EXXON CORP.	1	8,300	1990-06-19
204	42-461-33039	EXXON CORP.	1	8,300	1990-06-19
3501	42-383-34021	EXXON CORP.	1	8,300	1990-06-19
1202	42-383-34016	EXXON CORP.	1	8,300	1990-06-08
1202W	42-383-34016	EXXON CORP.	1	8,300	1990-06-08
1101	42-461-32863	EXXON CORP.	1	8,300	1988-11-22
1803	42-383-33930	EXXON CORP.	1	8,300	1988-11-22
203	42-461-32862	EXXON CORP.	2	8,300	1988-11-22
2101	42-383-33931	EXXON CORP.	1	8,300	1988-11-22
1401	42-383-33878	EXXON CORP.	1	8,000	1988-03-01
805	42-383-33879	EXXON CORP.	1	8,000	1988-03-01
2312	42-461-10265	--	--	--	--
301	42-461-03035	--	--	--	--
3801	42-383-00773	--	--	--	--
3802	42-383-00775	--	--	--	--
3901	42-383-00779	--	--	--	--
4001	42-383-00867	--	--	--	--
507W	42-383-00251	--	--	--	--
701	42-383-01543	--	--	--	--
704	42-383-01546	--	--	--	--
902	42-383-10131	--	--	--	--