WELCH "C"

Oil · District 08 · Lease #41841

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

322k BBL

Cum Gas

864k MCF

casinghead

Wells

6

Production

2011-09 — 2026-03

Peak Month

2012-12

Production History

Cum Oil: 321,636 BBL Cum Gas: 864,086 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,575 BBL/mo

Di (annual)

29.6%

b-factor

0.3

EUR

316,971 BBL

R-squared

0.804

type

hyperbolic

Operator History (from monthly production reports)

2011-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 179 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8PIONEER NATURAL RES. USA, INC.111,6102012-05-11
7PIONEER NATURAL RES. USA, INC.111,6102012-05-08
6PIONEER NATURAL RES. USA, INC.211,6002012-03-14
4PIONEER NATURAL RES. USA, INC.211,6502011-08-08
5PIONEER NATURAL RES. USA, INC.211,6002011-08-08
3PIONEER NATURAL RES. USA, INC.111,3002011-01-04