CATHEY RANCH 66

Oil · District 7C · Lease #14985

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

4k BBL

Cum Gas

13k MCF

casinghead

Wells

1

Production

1999-09 — 2001-12

Peak Month

2000-05

Production History

Cum Oil: 4,022 BBL Cum Gas: 13,473 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

654 BBL/mo

Di (annual)

233.4%

b-factor

0.0

EUR

3,367 BBL

R-squared

0.644

type

exponential

Operator History (from monthly production reports)

1999-09 — 2005-02 PIONEER NATURAL RES. USA, INC. 66 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.48,4002002-01-11