HIRSCH "F"

Oil // district 9 // lease#4254

op: PIONEER NATURAL RES. USA, INC.

cum_oil

194k BBL

cum_gas

0 MCF

wells

9

production

1993-01 — 2026-03

peak_month

2003-08

-- production_history

cum_oil: 194,121 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,706 BBL/mo

Di (annual)

18.7%

b-factor

0.3

EUR

149,832 BBL

R-squared

0.670

type

hyperbolic

-- wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10PIONEER NATURAL RES. USA, INC.29,5002003-01-30
8PIONEER NATURAL RES. USA, INC.29,5002003-01-30
9PIONEER NATURAL RES. USA, INC.29,5002003-01-30
7DCB OIL & GAS, INC.19,3001985-05-15
5DCB OIL & GAS, INC.18,7001984-07-17
6DCB OIL & GAS, INC.18,7001984-07-17
4DCB OIL & GAS, INC.18,7001983-12-29
B 142-461-18700--------
B 242-461-13300--------
EOF // multi-state drilling data platform // 2026