OBRIEN-BRUNSON 43A

Oil · District 08 · Lease #52078

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

545k BBL

Cum Gas

1.5M MCF

casinghead

Wells

1

Production

2019-01 — 2026-04

Peak Month

2019-02

Production History

Cum Oil: 545,441 BBL Cum Gas: 1,537,130 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

27,189 BBL/mo

Di (annual)

192.4%

b-factor

1.1

EUR

897,348 BBL

R-squared

0.965

type

hyperbolic

Operator History (from monthly production reports)

2019-01 — 2026-07 PIONEER NATURAL RES. USA, INC. 91 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HPIONEER NATURAL RES. USA, INC.110,6002017-07-18