C. B. ERWIN OIL UNIT

Oil // district 4 // lease#12592

op: PIONEER RESOURCES PRODUCING, L.P

cum_oil

1k BBL

cum_gas

0 MCF

wells

1

production

1996-08 — 1997-11

peak_month

1996-12

-- production_history

cum_oil: 1,464 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

269 BBL/mo

Di (annual)

962.5%

b-factor

0.7

EUR

926 BBL

R-squared

0.921

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA, INC.68,3002005-02-17
EOF // data source: Texas Railroad Commission // 2026