COFFIELD-OSAGE

Oil // district 3 // lease#17867

op: UNION PACIFIC AUSTIN CHALK CO.

cum_oil

189k BBL

cum_gas

0 MCF

wells

5

production

1993-01 — 2026-03

peak_month

2001-10

-- production_history

cum_oil: 189,422 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

4,615 BBL/mo

Di (annual)

48.2%

b-factor

0.3

EUR

162,891 BBL

R-squared

0.494

type

hyperbolic

-- wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1UNION PACIFIC AUSTIN CHALK CO.410,0002002-02-28
1REUNION PACIFIC AUSTIN CHALK CO.410,0002002-02-28
2U. S. OPERATING, INC.210,0002001-08-07
2REU. S. OPERATING, INC.210,0002001-08-07
3U. S. OPERATING, INC.110,0001982-11-08
EOF // data source: Texas Railroad Commission // 2026