ERWIN "H"

Oil · District 08 · Lease #37757

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

145k BBL

Cum Gas

223k MCF

casinghead

Wells

4

Production

2005-09 — 2022-04

Peak Month

2006-12

Production History

Cum Oil: 145,046 BBL Cum Gas: 223,298 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,387 BBL/mo

Di (annual)

10.4%

b-factor

0.0

EUR

158,861 BBL

R-squared

0.322

type

exponential

Operator History (from monthly production reports)

2005-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 251 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4PIONEER NATURAL RES. USA INC.110,9002010-07-21
3PIONEER NATURAL RES. USA INC.19,6502006-05-26
2PIONEER NATURAL RES. USA INC.19,6502006-04-05
1PIONEER NATURAL RES. USA INC.19,6502005-05-20