SOUTHERN UNIT

Oil // district 10 // lease#22613

op: VANGUARD OPERATING, LLC

cum_oil

355k BBL

cum_gas

0 MCF

wells

55

production

1993-01 — 2026-03

peak_month

1998-02

-- production_history

cum_oil: 355,049 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,718 BBL/mo

Di (annual)

8.0%

b-factor

0.0

EUR

254,309 BBL

R-squared

0.797

type

exponential

-- wells (55)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
182STANOLIND OPERATING CORP.15,8972007-11-21
184THREE-B OIL COMPANY, THE14,5002005-01-24
183WTHREE-B OIL COMPANY, THE15,5002003-11-25
32THREE-B OIL COMPANY, THE16,0001997-07-21
101742-103-00854--------
1020W42-103-00857--------
102242-103-00859--------
102342-103-00860--------
12142-103-03812--------
121042-103-03805--------
121142-103-03806--------
12242-103-03813--------
12342-103-03814--------
12442-103-03802--------
12542-103-03765--------
12642-103-03766--------
12742-103-03803--------
12842-103-03767--------
12942-103-03804--------
13142-103-03807--------
13242-103-03768--------
13342-103-03808--------
13442-103-03770--------
13542-103-03809--------
14142-103-03785--------
14342-103-03787--------
15142-103-03788--------
15242-103-03784--------
153W42-103-03984--------
15442-103-03985--------
15542-103-03987--------
15642-103-03988--------
15742-103-03989--------
18542-103-04682--------
185W42-103-04682--------
191W42-103-04672--------
201W42-103-05160--------
20242-103-04070--------
20442-103-04072--------
205W42-103-04073--------
206W42-103-04074--------
207W42-103-04075--------
3142-103-03279--------
31642-103-03810--------
4142-103-03273--------
5142-103-03272--------
70342-103-00271--------
7142-103-00269--------
7242-103-00272--------
7342-103-00271--------
7442-103-00268--------
7542-103-00267--------
76W42-103-00266--------
7742-103-00265--------
7842-103-00264--------
EOF // data source: Texas Railroad Commission // 2026