ERNEST -A-

Oil · District 08 · Lease #31962

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

184k BBL

Cum Gas

490k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

2015-05

Production History

Cum Oil: 183,624 BBL Cum Gas: 490,384 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,459 BBL/mo

Di (annual)

32.6%

b-factor

0.1

EUR

100,477 BBL

R-squared

0.750

type

hyperbolic

Operator History (from monthly production reports)

1997-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 347 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA, INC.111,4002014-10-14
4PIONEER NATURAL RES. USA, INC.111,4002014-04-21
1PIONEER NATURAL RES. USA, INC.19,6001988-06-22
2PIONEER NATURAL RES. USA, INC.19,6001988-06-22