TEXACO -E-

Oil · District 08 · Lease #31065

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

85k BBL

Cum Gas

136k MCF

casinghead

Wells

1

Production

1993-01 — 2025-03

Peak Month

1998-08

Production History

Cum Oil: 85,222 BBL Cum Gas: 136,273 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

316 BBL/mo

Di (annual)

2.7%

b-factor

0.0

EUR

103,276 BBL

R-squared

0.538

type

exponential

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo

2020-09 — 2021-05 DE3 OPERATING LLC 9 mo

1997-09 — 2020-08 PIONEER NATURAL RES. USA, INC. 276 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#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-329-01784	TEXACO INC.	1	11,433	1987-01-20