SHACKELFORD 40-12E

Oil · District 08 · Lease #59429

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

488k BBL

Cum Gas

970k MCF

casinghead

Wells

1

Production

2023-04 — 2026-04

Peak Month

2023-08

Production History

Cum Oil: 488,120 BBL Cum Gas: 970,242 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

20,541 BBL/mo

Di (annual)

40.7%

b-factor

0.0

EUR

606,233 BBL

R-squared

0.464

type

exponential

Operator History (from monthly production reports)

2023-04 — 2026-07 PIONEER NATURAL RES. USA, INC. 40 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5HPIONEER NATURAL RES. USA, INC.210,4752022-08-31