RICHARDS

Oil · District 08 · Lease #37673

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

422k BBL

Cum Gas

556k MCF

casinghead

Wells

8

Production

2005-12 — 2026-04

Peak Month

2012-02

Production History

Cum Oil: 421,765 BBL Cum Gas: 555,803 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,986 BBL/mo

Di (annual)

13.9%

b-factor

0.1

EUR

283,422 BBL

R-squared

0.799

type

hyperbolic

Operator History (from monthly production reports)

2005-12 — 2026-07 PIONEER NATURAL RES. USA, INC. 248 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10PIONEER NATURAL RES. USA, INC.110,6002010-10-05
5PIONEER NATURAL RES. USA, INC.19,7502006-12-08
6PIONEER NATURAL RES. USA, INC.19,7502006-12-08
7PIONEER NATURAL RES. USA, INC.110,0002006-09-11
3PIONEER NATURAL RES. USA, INC.110,0002006-03-28
4PIONEER NATURAL RES. USA, INC.110,0002006-03-28
1PIONEER NATURAL RES. USA, INC.110,0002005-07-05
2PIONEER NATURAL RES. USA, INC.110,0002005-07-05