SHACKELFORD 10Q

Oil · District 08 · Lease #50904

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

384k BBL

Cum Gas

1.9M MCF

casinghead

Wells

1

Production

2018-08 — 2026-04

Peak Month

2019-04

Production History

Cum Oil: 384,256 BBL Cum Gas: 1,889,257 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,924 BBL/mo

Di (annual)

39.8%

b-factor

0.0

EUR

269,267 BBL

R-squared

0.544

type

exponential

Operator History (from monthly production reports)

2018-08 — 2026-07 PIONEER NATURAL RES. USA, INC. 96 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
17HPIONEER NATURAL RES. USA, INC.110,7002017-05-26