KEYSTONE SILURIAN UNIT

Oil // district 10 // lease#23371

op: XTO ENERGY INC.

cum_oil

192k BBL

cum_gas

0 MCF

wells

41

production

1993-01 — 2019-09

peak_month

1993-01

-- production_history

cum_oil: 192,253 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,827 BBL/mo

Di (annual)

16.1%

b-factor

0.5

EUR

218,390 BBL

R-squared

0.838

type

hyperbolic

-- wells (41)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
30XTO ENERGY INC.19,9202019-07-12
25WDEVON ENERGY PRODUCTION CO, L.P.19,9982007-08-04
49DEVON ENERGY PRODUCTION CO, L.P.110,0082007-08-04
8BASS ENTERPRISES PRODUCTION CO.18,0301998-11-30
31BASS ENTERPRISES PRODUCTION CO.17,7301998-02-05
37BASS ENTERPRISES PRODUCTION CO.17,9001998-01-02
36BASS ENTERPRISES PRODUCTION CO.17,8901997-09-15
46BC OPERATING, INC.14,6001996-07-02
7PENNZOIL PETROLEUM COMPANY110,0621993-12-09
55PENNZOIL PETROLEUM COMPANY39,8781993-05-18
20GULF OIL CORP.19,7491980-12-30
1142-495-01297--------
12W42-495-01282--------
1342-495-10896--------
1542-495-01148--------
1642-495-01293--------
1742-495-01270--------
18W42-495-04290--------
19W42-495-10170--------
242-495-03900--------
21W42-495-01301--------
2242-495-01281--------
2342-495-01269--------
2642-495-10169--------
2742-495-10154--------
28W42-495-30045--------
3342-495-01267--------
3442-495-01272--------
3542-495-04131--------
3942-495-01291--------
41W42-495-02266--------
4242-495-02256--------
4342-495-02268--------
4442-495-02273--------
4542-495-01242--------
4742-495-02264--------
48W42-495-02260--------
5142-495-01259--------
5242-495-01163--------
5342-495-01189--------
6W42-495-01280--------
EOF // data source: Texas Railroad Commission // 2026