WILLIAMS-NAIL 5D

Oil · District 08 · Lease #61971

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

528k BBL

Cum Gas

619k MCF

casinghead

Wells

1

Production

2024-09 — 2026-04

Peak Month

2025-11

Production History

Cum Oil: 528,447 BBL Cum Gas: 619,164 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

39,208 BBL/mo

Di (annual)

25.3%

b-factor

0.0

EUR

1,856,079 BBL

R-squared

0.552

type

exponential

Operator History (from monthly production reports)

2024-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 23 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.110,6002024-06-10