O BRIEN,

Oil · District 08 · Lease #6267

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

543k BBL

Cum Gas

804k MCF

casinghead

Wells

12

Production

1993-01 — 2024-07

Peak Month

2012-05

Production History

Cum Oil: 543,010 BBL Cum Gas: 803,838 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,253 BBL/mo

Di (annual)

107.9%

b-factor

0.6

EUR

157,102 BBL

R-squared

0.794

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
1994-03 — 1995-02 MIDPAR L.P. 12 mo
1993-01 — 1994-02 AMERADA HESS CORPORATION 14 mo

Wells (12)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13PIONEER NATURAL RES. USA INC.110,8002011-07-21
11PIONEER NATURAL RES. USA INC.110,7752011-05-31
12PIONEER NATURAL RES. USA INC.19,0001996-09-11
10PIONEER NATURAL RES. USA INC.19,3001995-01-13
9PIONEER NATURAL RES. USA INC.18,7001994-09-14
7PIONEER NATURAL RES. USA INC.18,8001994-03-21
8PIONEER NATURAL RES. USA INC.18,8001994-03-18
342-329-00049PIONEER NATURAL RES. USA INC.------
61X42-329-00048PIONEER NATURAL RES. USA INC.------
6342-329-00049PIONEER NATURAL RES. USA INC.------
64W42-329-00061PIONEER NATURAL RES. USA INC.------
6642-329-00063PIONEER NATURAL RES. USA INC.------