SHACKELFORD 40-12B

Oil · District 08 · Lease #59502

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

508k BBL

Cum Gas

1.2M MCF

casinghead

Wells

1

Production

2023-03 — 2026-04

Peak Month

2023-08

Production History

Cum Oil: 508,427 BBL Cum Gas: 1,152,654 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

37,036 BBL/mo

Di (annual)

206.3%

b-factor

0.5

EUR

423,097 BBL

R-squared

0.720

type

hyperbolic

Operator History (from monthly production reports)

2023-03 — 2026-07 PIONEER NATURAL RES. USA, INC. 41 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HPIONEER NATURAL RES. USA, INC.110,4752022-08-31