CHAPMAN UNIT

Oil // district 11 // lease#65203

op: SOUTHWEST ROYALTIES, INC.

cum_oil

292k BBL

cum_gas

0 MCF

wells

39

production

1993-01 — 2026-03

peak_month

1993-03

-- production_history

cum_oil: 291,596 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,862 BBL/mo

Di (annual)

8.5%

b-factor

0.2

EUR

299,825 BBL

R-squared

0.793

type

hyperbolic

-- wells (39)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
106ADEMINEX U. S. OIL CO.11,8501985-06-03
212DEMINEX U. S. OIL CO.11,8501985-06-03
311DEMINEX U. S. OIL CO.11,8501985-04-09
105DEMINEX U. S. OIL CO.11,8501985-04-02
210DEMINEX U. S. OIL CO.11,8501985-04-02
211DEMINEX U. S. OIL CO.11,8501985-04-02
310DEMINEX U. S. OIL CO.11,8501985-04-02
410DEMINEX U. S. OIL CO.11,8501985-04-02
209DEMINEX U. S. OIL CO.11,9001983-10-20
309DEMINEX U. S. OIL CO.11,9001983-10-20
409DEMINEX U. S. OIL CO.11,9001983-10-20
101DEMINEX U. S. OIL CO.11,8001979-11-12
10242-415-00462--------
10342-415-00463--------
10442-415-00464--------
20142-415-00215--------
20242-415-00216--------
20342-415-00217--------
20442-415-10354--------
20542-415-04502--------
20642-415-04504--------
20742-415-04505--------
20842-415-04506--------
30142-415-00214--------
30242-415-00064--------
30342-415-00471--------
30442-415-00472--------
30542-415-00473--------
30642-415-00474--------
30742-415-00475--------
30842-415-00476--------
40142-415-00063--------
40242-415-00065--------
40342-415-00465--------
40442-415-00466--------
40542-415-00467--------
40642-415-00468--------
40742-415-00469--------
40842-415-00470--------
EOF // data source: Texas Railroad Commission // 2026