KEYSTONE CATTLE CO.

Oil // district 10 // lease#11995

op: WHITING OIL AND GAS CORPORATION

cum_oil

267k BBL

cum_gas

0 MCF

wells

13

production

1993-01 — 2026-03

peak_month

1997-03

-- production_history

cum_oil: 267,229 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,550 BBL/mo

Di (annual)

16.1%

b-factor

0.5

EUR

185,415 BBL

R-squared

0.519

type

hyperbolic

-- wells (13)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
412MERIDIAN OIL INC.29,0002025-06-17
453WHITING OIL AND GAS CORPORATION28,4002013-11-05
461WHITING OIL AND GAS CORPORATION48,5002013-08-28
442HWHITING OIL AND GAS CORPORATION412,0002008-03-28
501WHITING OIL AND GAS CORPORATION211,5002008-02-13
405MERIDIAN OIL INC.68,6002001-10-09
411MERIDIAN OIL INC.29,0002001-09-06
409MERIDIAN OIL INC.39,0001996-09-04
419MERIDIAN OIL INC.38,8031994-08-10
422MERIDIAN OIL INC.28,3251994-04-29
407MERIDIAN OIL INC.38,8001992-09-02
420HMERIDIAN OIL INC.311,0361991-06-21
18842-495-01340--------
EOF // data source: Texas Railroad Commission // 2026