BAST 34 AND 39

Oil · District 7C · Lease #19871

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

857k BBL

Cum Gas

5.6M MCF

casinghead

Wells

3

Production

2018-01 — 2026-04

Peak Month

2018-05

Production History

Cum Oil: 856,946 BBL Cum Gas: 5,625,651 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

71,143 BBL/mo

Di (annual)

247.7%

b-factor

0.8

EUR

1,179,678 BBL

R-squared

0.930

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2018-01 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 37 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4409HPIONEER NATURAL RES. USA, INC.29,4002017-05-31
4809HPIONEER NATURAL RES. USA, INC.110,1002017-05-31
4309HPIONEER NATURAL RES. USA, INC.19,2002017-05-30