HIRSCH "F"

Oil · District 9 · Lease #4254

Operator: 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--------
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