MARKHAM

Oil // district 11 // lease#65175

op: SHERIDAN PRODUCTION COMPANY, LLC

cum_oil

87k BBL

cum_gas

0 MCF

wells

3

production

1993-01 — 2026-03

peak_month

1993-07

-- production_history

cum_oil: 87,330 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

569 BBL/mo

Di (annual)

8.2%

b-factor

0.0

EUR

82,302 BBL

R-squared

0.803

type

exponential

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3SANDRIDGE EXPL. AND PROD., LLC17,8002011-07-25
2RIM OPERATING, INC.28,8002005-07-27
1USENCO17,8001984-10-26
EOF // data source: Texas Railroad Commission // 2026