WINKLEMAN

Oil · District 08 · Lease #26626

Operator: PIONEER NATURAL RES. USA, INC.

Fields: STA (ATOKA)

Cum Oil

40k BBL

Cum Gas

342k MCF

casinghead

Wells

1

Production

1993-01 — 2016-06

Peak Month

1993-05

Production History

Cum Oil: 39,613 BBL Cum Gas: 341,668 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

327 BBL/mo

Di (annual)

10.2%

b-factor

0.1

EUR

41,516 BBL

R-squared

0.764

type

hyperbolic

Operator History (from monthly production reports)

2021-06 — 2022-07 PIONEER NATURAL RES. USA, INC. 14 mo
2019-07 — 2021-05 DE3 OPERATING LLC 23 mo
2002-10 — 2019-06 ENDEAVOR ENERGY RESOURCES L.P. 201 mo
1993-01 — 2002-09 LAGUNA PETROLEUM CORPORATION 117 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.112,5001980-09-22