SOUTH PENA CREEK UNIT

Oil // district 1 // lease#10690

op: TXCO RESOURCES INC.

cum_oil

820k BBL

cum_gas

0 MCF

wells

86

production

1993-01 — 2026-03

peak_month

2001-06

-- production_history

cum_oil: 820,195 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

4,460 BBL/mo

Di (annual)

10.8%

b-factor

0.2

EUR

587,556 BBL

R-squared

0.746

type

hyperbolic

-- wells (86)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
500TXCO RESOURCES INC.23,4102009-10-13
520TXCO RESOURCES INC.14,0002008-07-10
514TXCO RESOURCES INC.14,0002008-06-17
527TXCO RESOURCES INC.14,0002008-06-16
521TXCO RESOURCES INC.14,0002008-06-13
507TXCO RESOURCES INC.14,0002008-06-10
501EXPLORATION COMPANY, THE13,4002006-07-20
502EXPLORATION COMPANY, THE13,4002006-07-20
506EXPLORATION COMPANY, THE13,4002006-07-20
505EXPLORATION COMPANY, THE13,6002006-06-27
510EXPLORATION COMPANY, THE13,6002006-06-16
417EXPLORATION COMPANY, THE13,6002006-04-25
437EXPLORATION COMPANY, THE23,6002006-04-25
474EXPLORATION COMPANY, THE13,3002005-07-01
473EXPLORATION COMPANY, THE13,6002003-02-13
470EXPLORATION COMPANY, THE13,6002003-02-10
471EXPLORATION COMPANY, THE13,6002003-01-23
472EXPLORATION COMPANY, THE13,6002003-01-23
498MERIT ENERGY COMPANY13,4002001-09-24
499MERIT ENERGY COMPANY13,4002001-09-24
443MERIT ENERGY COMPANY13,2752001-08-02
442MERIT ENERGY COMPANY13,2802001-06-08
497TXCO RESOURCES INC.33,4002001-04-27
495MERIT ENERGY COMPANY13,3002001-03-13
496MERIT ENERGY COMPANY13,3002001-03-13
465CONOCO INC.13,3751994-12-19
435CONOCO INC.33,6001994-06-08
489CONOCO INC.13,5001991-07-16
490CONOCO INC.13,5001991-07-16
491CONOCO INC.13,5001991-07-16
492CONOCO INC.13,5001991-05-29
493CONOCO INC.13,5001991-05-29
494CONOCO INC.13,5001991-05-29
408CONOCO INC.13,7001985-11-21
434CONOCO INC.13,7001985-11-21
453CONOCO INC.13,7001985-11-21
469CONOCO INC.13,7001985-11-21
436CONOCO INC.13,6001985-11-18
468CONOCO INC.13,3351983-12-01
40242-127-30664--------
40342-127-30771--------
40442-127-30794--------
40542-127-30833--------
40642-127-30874--------
40742-127-30873--------
41142-127-30582--------
41242-127-30615--------
41342-127-30624--------
41442-127-30635--------
41542-127-30636--------
41642-127-30644--------
42142-127-30480--------
42242-127-30481--------
42342-127-30491--------
42442-127-30514--------
42542-127-30525--------
42642-127-30538--------
42742-127-30542--------
42842-127-30551--------
42942-127-30579--------
43042-127-30567--------
43142-127-30580--------
43242-127-30591--------
43342-127-30584--------
44142-127-30440--------
44542-127-30633--------
44642-127-30553--------
44742-127-30712--------
44842-127-30732--------
44942-127-30755--------
45042-127-30754--------
45142-127-30799--------
45242-127-30889--------
46142-127-30478--------
46242-127-30490--------
46342-127-30496--------
46442-127-30497--------
46642-127-30571--------
46742-127-30592--------
48142-127-30457--------
48242-127-30495--------
48342-127-30494--------
48442-127-30528--------
48542-127-30541--------
48642-127-30552--------
48842-127-30587--------
EOF // data source: Texas Railroad Commission // 2026