ULMER "A"

Oil · District 7C · Lease #13063

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

86k BBL

Cum Gas

239k MCF

casinghead

Wells

1

Production

1993-01 — 2020-07

Peak Month

1995-01

Production History

Cum Oil: 85,737 BBL Cum Gas: 238,941 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

701 BBL/mo

Di (annual)

10.0%

b-factor

0.0

EUR

83,256 BBL

R-squared

0.760

type

exponential

Operator History (from monthly production reports)

1997-09 — 2021-03 PIONEER NATURAL RES. USA, INC. 283 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.19,1001991-02-20