SPINKS "12"

Oil · District 08 · Lease #37518

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

14k BBL

Cum Gas

123k MCF

casinghead

Wells

2

Production

2004-10 — 2009-06

Peak Month

2005-03

Production History

Cum Oil: 13,984 BBL Cum Gas: 123,027 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

450 BBL/mo

Di (annual)

67.0%

b-factor

0.0

EUR

8,040 BBL

R-squared

0.402

type

exponential

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2019-07 — 2021-05 DE3 OPERATING LLC 23 mo
2004-10 — 2019-06 ENDEAVOR ENERGY RESOURCES L.P. 177 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.612,8082018-07-09
1HPIONEER NATURAL RES. USA INC.612,8082018-07-09