COWDEN RANCH 656 (CISCO)UNIT

Oil // district 10 // lease#36439

op: RUST OIL CORP.

cum_oil

94k BBL

cum_gas

0 MCF

wells

5

production

2000-09 — 2026-03

peak_month

2001-01

-- production_history

cum_oil: 94,147 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,495 BBL/mo

Di (annual)

40.9%

b-factor

0.0

EUR

73,191 BBL

R-squared

0.843

type

exponential

-- wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RUST OIL CORP.29,0002025-08-29
2RUST OIL CORP.29,6002024-05-30
5RUST OIL CORP.19,5001998-09-21
4RUST OIL CORP.19,5001998-04-01
3RUST OIL CORP.19,5001997-09-26
EOF // data source: Texas Railroad Commission // 2026