BUTLER GRAYBURG

Oil · District 08 · Lease #36997

Operator: OXYROCK OPERATING, LLC

Cum Oil

22k BBL

Cum Gas

11k MCF

casinghead

Wells

2

Production

2002-11 — 2026-04

Peak Month

2018-08

Production History

Cum Oil: 21,542 BBL Cum Gas: 11,207 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

336 BBL/mo

Di (annual)

255.1%

b-factor

0.3

EUR

2,228 BBL

R-squared

0.344

type

hyperbolic

Operator History (from monthly production reports)

2024-08 — 2026-07 OXYROCK OPERATING, LLC 24 mo
2020-05 — 2024-07 CROWNQUEST OPERATING, LLC 51 mo
2018-06 — 2020-04 DE3 OPERATING LLC 23 mo
2002-11 — 2018-05 ARKLAND PRODUCING CO., INC. 187 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2OXYROCK OPERATING, LLC310,5502016-07-27
1OXYROCK OPERATING, LLC28,6002003-01-02