EDWARDS FIELD GRAYBURG UNIT

Oil · District 08 · Lease #20424

Operator: WJC, INC.

Fields: EDWARDS

Cum Oil

585k BBL

Cum Gas

120k MCF

casinghead

Wells

84

Production

1993-01 — 2026-04

Peak Month

2001-07

Production History

Cum Oil: 585,035 BBL Cum Gas: 120,327 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,237 BBL/mo

Di (annual)

9.3%

b-factor

0.0

EUR

415,388 BBL

R-squared

0.440

type

exponential

Operator History (from monthly production reports)

2026-06 — 2026-07 AD ASTRA RESOURCES, LLC 2 mo
2024-06 — 2026-05 PENWELL SOUTH OPERATING LLC 24 mo
2021-02 — 2024-05 EXTEX OPERATING COMPANY 40 mo
2013-07 — 2021-01 LEGACY RESERVES OPERATING LP 91 mo
2009-01 — 2013-06 RESACA OPERATING COMPANY 54 mo
2006-06 — 2008-12 TORCH ENERGY SERVICES, INC. 31 mo
2001-01 — 2006-05 SDG RESOURCES L.P. 65 mo
1993-01 — 2000-12 WJC, INC. 96 mo

Wells (84)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
602PENWELL SOUTH OPERATING LLC13,7502011-05-23
601PENWELL SOUTH OPERATING LLC13,5861983-12-19
613PENWELL SOUTH OPERATING LLC13,7501983-11-21
614PENWELL SOUTH OPERATING LLC13,7501983-11-21
738PENWELL SOUTH OPERATING LLC13,7501983-11-21
612PENWELL SOUTH OPERATING LLC13,8001983-07-20
610PENWELL SOUTH OPERATING LLC13,8001982-10-25
611PENWELL SOUTH OPERATING LLC13,8001982-10-25
734PENWELL SOUTH OPERATING LLC13,8001982-10-25
735PENWELL SOUTH OPERATING LLC13,8001982-10-25
736PENWELL SOUTH OPERATING LLC13,8001982-10-25
737PENWELL SOUTH OPERATING LLC13,8001982-10-25
609PENWELL SOUTH OPERATING LLC13,8001981-09-16
732PENWELL SOUTH OPERATING LLC13,8001981-09-16
733PENWELL SOUTH OPERATING LLC13,8001981-09-16
730PENWELL SOUTH OPERATING LLC13,8001981-04-17
608PENWELL SOUTH OPERATING LLC13,8001981-04-09
731PENWELL SOUTH OPERATING LLC13,8001981-04-09
607PENWELL SOUTH OPERATING LLC13,8001980-10-31
728PENWELL SOUTH OPERATING LLC13,8001980-10-31
729PENWELL SOUTH OPERATING LLC23,8001980-10-31
727PENWELL SOUTH OPERATING LLC13,8001978-07-10
10242-135-03590PENWELL SOUTH OPERATING LLC------
10342-135-03591PENWELL SOUTH OPERATING LLC------
103 O42-135-03591PENWELL SOUTH OPERATING LLC------
20142-135-06041PENWELL SOUTH OPERATING LLC------
20242-135-06042PENWELL SOUTH OPERATING LLC------
20342-135-06043PENWELL SOUTH OPERATING LLC------
20442-135-06044PENWELL SOUTH OPERATING LLC------
20542-135-06045PENWELL SOUTH OPERATING LLC------
20742-135-06047PENWELL SOUTH OPERATING LLC------
20842-135-06048PENWELL SOUTH OPERATING LLC------
30142-135-03575PENWELL SOUTH OPERATING LLC------
30242-135-03576PENWELL SOUTH OPERATING LLC------
30342-135-03577PENWELL SOUTH OPERATING LLC------
30442-135-03550PENWELL SOUTH OPERATING LLC------
40142-135-08255PENWELL SOUTH OPERATING LLC------
40342-135-08257PENWELL SOUTH OPERATING LLC------
40442-135-08258PENWELL SOUTH OPERATING LLC------
40542-135-08259PENWELL SOUTH OPERATING LLC------
40642-103-10667PENWELL SOUTH OPERATING LLC------
40742-103-04387PENWELL SOUTH OPERATING LLC------
50142-103-04388PENWELL SOUTH OPERATING LLC------
502W42-103-04389PENWELL SOUTH OPERATING LLC------
50342-103-04390PENWELL SOUTH OPERATING LLC------
60342-135-05571PENWELL SOUTH OPERATING LLC------
60442-135-05572PENWELL SOUTH OPERATING LLC------
60542-135-05573PENWELL SOUTH OPERATING LLC------
60642-135-05574PENWELL SOUTH OPERATING LLC------
70442-103-05247PENWELL SOUTH OPERATING LLC------
70642-135-05846PENWELL SOUTH OPERATING LLC------
70742-135-05845PENWELL SOUTH OPERATING LLC------
70842-103-05233PENWELL SOUTH OPERATING LLC------
710W42-135-05859PENWELL SOUTH OPERATING LLC------
71142-103-05234PENWELL SOUTH OPERATING LLC------
71242-135-05860PENWELL SOUTH OPERATING LLC------
71642-103-05239PENWELL SOUTH OPERATING LLC------
717W42-135-05863PENWELL SOUTH OPERATING LLC------
71842-135-05864PENWELL SOUTH OPERATING LLC------
71942-135-05865PENWELL SOUTH OPERATING LLC------
72042-135-05866PENWELL SOUTH OPERATING LLC------
720W42-135-05866PENWELL SOUTH OPERATING LLC------
72142-103-10663PENWELL SOUTH OPERATING LLC------
72242-103-05240PENWELL SOUTH OPERATING LLC------
72342-103-05241PENWELL SOUTH OPERATING LLC------
72442-103-05243PENWELL SOUTH OPERATING LLC------
72542-103-05242PENWELL SOUTH OPERATING LLC------
80142-103-82397PENWELL SOUTH OPERATING LLC------
80242-103-04246PENWELL SOUTH OPERATING LLC------
80342-135-03587PENWELL SOUTH OPERATING LLC------
80442-103-04245PENWELL SOUTH OPERATING LLC------
80542-135-03534PENWELL SOUTH OPERATING LLC------
80642-135-03535PENWELL SOUTH OPERATING LLC------
80742-135-03536PENWELL SOUTH OPERATING LLC------
808W42-135-03537PENWELL SOUTH OPERATING LLC------
80942-135-03538PENWELL SOUTH OPERATING LLC------
81142-135-03539PENWELL SOUTH OPERATING LLC------
81242-135-03540PENWELL SOUTH OPERATING LLC------
813W42-135-03588PENWELL SOUTH OPERATING LLC------
81542-135-03542PENWELL SOUTH OPERATING LLC------
90142-103-04097PENWELL SOUTH OPERATING LLC------
90242-103-04103PENWELL SOUTH OPERATING LLC------
903W42-103-04102PENWELL SOUTH OPERATING LLC------
90442-103-04101PENWELL SOUTH OPERATING LLC------