FOSTER, MARY ACCT. #2

Oil · District 08 · Lease #12160

Operator: PIONEER NATURAL RES. USA, INC.

Fields: IATAN (SAN ANDRES)

Cum Oil

989k BBL

Cum Gas

142k MCF

casinghead

Wells

Production

1993-01 — 2026-04

Peak Month

2013-03

Production History

Cum Oil: 989,424 BBL Cum Gas: 142,455 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

9,104 BBL/mo

Di (annual)

77.5%

b-factor

2.0

EUR

1,107,961 BBL

R-squared

0.949

type

hyperbolic

Operator History (from monthly production reports)

2011-04 — 2026-07 BASA RESOURCES, INC. 184 mo

2002-11 — 2011-03 CROWNQUEST OPERATING, LLC 101 mo

2001-08 — 2002-10 BC OPERATING, INC. 15 mo

1999-10 — 2001-07 CROWNQUEST OPERATING, LLC 22 mo

1997-09 — 1999-09 PIONEER NATURAL RES. USA, INC. 25 mo

1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo

1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (74)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
170	42-335-32986	BASA RESOURCES, INC.	3	3,550	2024-01-09
274	42-335-33600	BASA RESOURCES, INC.	3	3,500	2023-10-11
385	42-335-33846	BASA RESOURCES, INC.	3	3,320	2019-09-27
269	42-335-33601	BASA RESOURCES, INC.	3	3,500	2019-07-05
610	42-335-35804	BASA RESOURCES, INC.	1	2,300	2013-02-26
611	42-335-35805	BASA RESOURCES, INC.	1	2,300	2013-02-26
612	42-335-35806	BASA RESOURCES, INC.	1	2,300	2013-02-26
614	42-335-35807	BASA RESOURCES, INC.	2	2,300	2013-02-26
615	42-335-35808	BASA RESOURCES, INC.	1	2,300	2013-02-26
616	42-335-35809	BASA RESOURCES, INC.	1	2,300	2013-02-26
617	42-335-35810	BASA RESOURCES, INC.	1	2,300	2013-02-26
607	42-335-35801	BASA RESOURCES, INC.	1	2,300	2013-02-25
608	42-335-35800	BASA RESOURCES, INC.	1	2,300	2013-02-25
609	42-335-35802	BASA RESOURCES, INC.	1	2,300	2013-02-25
613	42-335-35803	BASA RESOURCES, INC.	1	2,300	2013-02-25
502	42-335-34608	BASA RESOURCES, INC.	2	3,521	2013-01-03
430	42-335-33956	BASA RESOURCES, INC.	2	3,400	2012-12-20
475	42-335-34512	BASA RESOURCES, INC.	2	3,500	2012-09-18
602	42-335-35732	BASA RESOURCES, INC.	1	2,300	2012-08-23
600	42-335-35729	BASA RESOURCES, INC.	1	2,300	2012-08-18
601	42-335-35730	BASA RESOURCES, INC.	1	2,300	2012-08-18
603	42-335-35733	BASA RESOURCES, INC.	1	2,300	2012-08-18
604	42-335-35731	BASA RESOURCES, INC.	1	2,300	2012-08-18
605	42-335-35734	BASA RESOURCES, INC.	1	2,200	2012-08-18
606	42-335-35735	BASA RESOURCES, INC.	1	2,200	2012-08-18
203	42-335-33291	BASA RESOURCES, INC.	2	3,600	2012-08-13
186	42-335-33193	BASA RESOURCES, INC.	2	3,600	2011-11-23
26	42-335-00910	BASA RESOURCES, INC.	1	2,888	2011-11-23
145	42-335-31770	BASA RESOURCES, INC.	2	3,500	2011-10-26
439	42-335-33982	BASA RESOURCES, INC.	2	3,400	2011-10-24
201	42-335-33197	BASA RESOURCES, INC.	2	3,600	2011-09-19
244	42-335-33410	BASA RESOURCES, INC.	2	3,600	2011-06-30
417	42-335-33950	BASA RESOURCES, INC.	2	3,400	2011-06-29
154	42-335-32830	BASA RESOURCES, INC.	3	3,850	2010-04-06
490	42-335-34604	BASA RESOURCES, INC.	2	3,502	2009-03-20
476	42-335-34513	BASA RESOURCES, INC.	2	3,500	2009-01-05
473	42-335-34510	BASA RESOURCES, INC.	2	3,500	2006-09-15
348	42-335-33815	BASA RESOURCES, INC.	2	3,280	2003-07-25
450	42-335-34029	BASA RESOURCES, INC.	1	2,200	1997-12-03
451	42-335-34030	BASA RESOURCES, INC.	1	2,200	1997-12-03
452	42-335-34031	BASA RESOURCES, INC.	1	2,200	1997-12-03
453	42-335-34032	BASA RESOURCES, INC.	1	2,200	1997-12-03
315	42-335-33699	BASA RESOURCES, INC.	1	2,100	1995-01-19
316	42-335-33691	BASA RESOURCES, INC.	1	2,100	1995-01-19
317	42-335-33700	BASA RESOURCES, INC.	1	2,100	1995-01-19
318	42-335-33701	BASA RESOURCES, INC.	1	2,100	1995-01-19
319	42-335-33702	BASA RESOURCES, INC.	1	2,100	1995-01-19
320	42-335-33692	BASA RESOURCES, INC.	1	2,100	1995-01-19
321	42-335-33693	BASA RESOURCES, INC.	1	2,100	1995-01-19
322	42-335-33694	BASA RESOURCES, INC.	1	2,100	1995-01-19
323	42-335-33695	BASA RESOURCES, INC.	1	2,100	1995-01-19
324	42-335-33696	BASA RESOURCES, INC.	1	2,100	1995-01-19
325	42-335-33697	BASA RESOURCES, INC.	2	2,100	1995-01-19
326	42-335-33698	BASA RESOURCES, INC.	1	2,100	1995-01-19
313W	42-335-33685	BASA RESOURCES, INC.	1	2,100	1994-11-10
314W	42-335-33684	BASA RESOURCES, INC.	1	2,100	1994-11-10
225	42-335-33319	BASA RESOURCES, INC.	2	3,600	1994-05-24
148	42-335-32365	BASA RESOURCES, INC.	2	3,500	1994-05-03
262	42-335-33542	BASA RESOURCES, INC.	3	3,600	1994-04-22
147	42-335-32366	BASA RESOURCES, INC.	2	3,500	1994-04-20
270	42-335-33595	BASA RESOURCES, INC.	2	3,500	1994-02-25
281	42-335-33640	BASA RESOURCES, INC.	2	3,400	1993-11-18
137	42-335-31692	BASA RESOURCES, INC.	2	3,500	1993-11-17
185	42-335-33111	BASA RESOURCES, INC.	2	3,500	1993-06-04
185W	42-335-33111	BASA RESOURCES, INC.	2	3,500	1993-06-04
218	42-335-33320	BASA RESOURCES, INC.	2	3,600	1993-05-12
108	42-335-30284	BASA RESOURCES, INC.	1	3,320	1987-01-29
106	42-335-30092	BASA RESOURCES, INC.	--	--	--
23	42-335-00907	BASA RESOURCES, INC.	--	--	--
24 U	42-335-00908	BASA RESOURCES, INC.	--	--	--
37	42-335-80208	BASA RESOURCES, INC.	--	--	--
38	42-335-00922	BASA RESOURCES, INC.	--	--	--
40	42-335-00924	BASA RESOURCES, INC.	--	--	--
45W	42-335-00928	BASA RESOURCES, INC.	--	--	--

FOSTER, MARY ACCT. #2

Production HistoryBeta Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]

Decline Curve Analysis

Operator History (from monthly production reports)

Wells (74)

Production History