MADISON-CALLAWAY 27A

Oil // district 10 // lease#61996

op: PIONEER NATURAL RES. USA, INC.

cum_oil

139k BBL

cum_gas

0 MCF

wells

1

production

2024-08 — 2026-03

peak_month

2025-04

-- production_history

cum_oil: 138,932 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

29,731 BBL/mo

Di (annual)

271.7%

b-factor

0.1

EUR

146,431 BBL

R-squared

0.962

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HPIONEER NATURAL RES. USA, INC.110,6302024-06-07
EOF // data source: Texas Railroad Commission // 2026