RUTHVEN, SHIRLEY

Oil // district 3 // lease#22496

op: UNION PACIFIC AUSTIN CHALK CO.

cum_oil

337k BBL

cum_gas

0 MCF

wells

2

production

1994-07 — 2026-03

peak_month

2012-05

-- production_history

cum_oil: 336,527 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

5,677 BBL/mo

Di (annual)

52.1%

b-factor

0.3

EUR

185,727 BBL

R-squared

0.791

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2ENERVEST OPERATING, L.L.C.111,0002011-08-02
1HUMBLE EXPLORATION CO., INC.211,0621994-06-03
EOF // data source: Texas Railroad Commission // 2026