WILLIAMS-NAIL 5A

Oil · District 08 · Lease #61967

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

336k BBL

Cum Gas

488k MCF

casinghead

Wells

1

Production

2024-08 — 2026-04

Peak Month

2025-08

Production History

Cum Oil: 336,220 BBL Cum Gas: 487,711 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

32,134 BBL/mo

Di (annual)

91.1%

b-factor

0.0

EUR

423,512 BBL

R-squared

0.936

type

exponential

Operator History (from monthly production reports)

2024-08 — 2026-07 PIONEER NATURAL RES. USA, INC. 24 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HPIONEER NATURAL RES. USA, INC.110,6002024-06-10