HARDEE, B.

Oil · District 8A · Lease #5740

Operator: YOST OIL COMPANY

Cum Oil

328k BBL

Cum Gas

22 MCF

casinghead

Wells

17

Production

1993-01 — 2026-04

Peak Month

2015-06

Production History

Cum Oil: 328,402 BBL Cum Gas: 22 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,566 BBL/mo

Di (annual)

33.2%

b-factor

0.6

EUR

112,887 BBL

R-squared

0.928

type

hyperbolic

Operator History (from monthly production reports)

2024-01 — 2026-07 GRAYROCK ENERGY II, LLC 31 mo
2017-06 — 2023-12 ROVER PETROLEUM OPERATING, LLC 79 mo
2013-01 — 2017-05 MERIT ENERGY COMPANY 53 mo
2006-05 — 2012-12 CIMAREX ENERGY CO. OF COLORADO 80 mo
2002-04 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 49 mo
2000-03 — 2002-03 PRIZE OPERATING COMPANY 25 mo
1996-06 — 2000-02 VISTA RESOURCES, INC. (A) 45 mo
1993-01 — 1996-05 YOST OIL COMPANY 41 mo

Wells (17)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
21GRAYROCK ENERGY II, LLC33,0002006-10-11
20GRAYROCK ENERGY II, LLC13,0002006-09-29
18WGRAYROCK ENERGY II, LLC12,0002006-08-30
19WGRAYROCK ENERGY II, LLC12,0002006-08-30
14GRAYROCK ENERGY II, LLC11,9001996-12-30
17GRAYROCK ENERGY II, LLC11,9001996-12-30
3RGRAYROCK ENERGY II, LLC11,9001996-12-30
5RGRAYROCK ENERGY II, LLC11,9001996-12-30
12GRAYROCK ENERGY II, LLC11,9001996-12-03
16XGRAYROCK ENERGY II, LLC11,9001996-10-09
11GRAYROCK ENERGY II, LLC11,7001978-03-20
142-415-04232GRAYROCK ENERGY II, LLC------
1042-415-30508GRAYROCK ENERGY II, LLC------
442-415-01888GRAYROCK ENERGY II, LLC------
642-415-01890GRAYROCK ENERGY II, LLC------
842-415-01892GRAYROCK ENERGY II, LLC------
942-415-04840GRAYROCK ENERGY II, LLC------