SEBASTIAN 19-18-D

Oil · District 7C · Lease #21221

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

449k BBL

Cum Gas

2.9M MCF

casinghead

Wells

2

Production

2020-03 — 2026-04

Peak Month

2021-05

Production History

Cum Oil: 449,318 BBL Cum Gas: 2,938,027 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

38,991 BBL/mo

Di (annual)

176.5%

b-factor

0.4

EUR

440,325 BBL

R-squared

0.976

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2020-03 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 11 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4108HPIONEER NATURAL RES. USA, INC.29,6002020-01-28
4308HPIONEER NATURAL RES. USA, INC.210,0002020-01-28