UNIVERSITY/ENERGEN GRAYBURG UNIT

Oil // district 10 // lease#37100

op: LIBERTAD OPERATING LLC

cum_oil

916k BBL

cum_gas

0 MCF

wells

33

production

2003-04 — 2026-03

peak_month

2004-10

-- production_history

cum_oil: 916,214 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

10,723 BBL/mo

Di (annual)

20.1%

b-factor

0.2

EUR

789,696 BBL

R-squared

0.961

type

hyperbolic

-- wells (33)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
108WENERGEN RESOURCES CORPORATION15,5002003-07-15
109WENERGEN RESOURCES CORPORATION15,5002003-07-15
110WENERGEN RESOURCES CORPORATION15,5002003-07-15
111WENERGEN RESOURCES CORPORATION15,5002003-07-15
207WENERGEN RESOURCES CORPORATION15,5002003-07-15
208WENERGEN RESOURCES CORPORATION15,5002003-07-15
209WENERGEN RESOURCES CORPORATION15,5002003-07-15
210WENERGEN RESOURCES CORPORATION15,5002003-07-15
211WENERGEN RESOURCES CORPORATION15,5002003-07-15
212WENERGEN RESOURCES CORPORATION15,5002003-07-15
303WENERGEN RESOURCES CORPORATION15,5002003-07-15
509WENERGEN RESOURCES CORPORATION15,5002003-07-15
705WENERGEN RESOURCES CORPORATION15,5002003-07-15
302ENERGEN RESOURCES CORPORATION15,5002000-02-08
206ENERGEN RESOURCES CORPORATION15,5001999-08-30
401ENERGEN RESOURCES CORPORATION25,0001999-04-21
401RENERGEN RESOURCES CORPORATION25,0001999-04-21
508ENERGEN RESOURCES CORPORATION15,0001999-04-21
104ENERGEN RESOURCES CORPORATION15,0001999-02-18
105ENERGEN RESOURCES CORPORATION15,0001999-02-18
106ENERGEN RESOURCES CORPORATION15,0001999-02-18
204ENERGEN RESOURCES CORPORATION15,0001999-02-18
205ENERGEN RESOURCES CORPORATION15,0001999-02-18
801TAURUS EXPLORATION U.S.A., INC.15,0041998-10-13
101TAURUS EXPLORATION U.S.A., INC.14,9201998-09-23
704NATIONAL COOP REFINERY ASSOC15,1001985-11-04
704RNATIONAL COOP REFINERY ASSOC15,1001985-11-04
20242-003-02035--------
20342-003-11013--------
50342-003-03069--------
50442-003-03075--------
505W42-003-03070--------
507W42-003-10234--------
EOF // data source: Texas Railroad Commission // 2026