GRINDSTAFF

Oil · District 7C · Lease #11148

Operator: XERIC OIL & GAS CORPORATION

Fields: BEDDO

Cum Oil

28k BBL

Cum Gas

34k MCF

casinghead

Wells

4

Production

1993-01 — 2011-12

Peak Month

2003-08

Production History

Cum Oil: 27,786 BBL Cum Gas: 34,161 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

342 BBL/mo

Di (annual)

25.8%

b-factor

0.4

EUR

24,714 BBL

R-squared

0.540

type

hyperbolic

Operator History (from monthly production reports)

2015-03 — 2026-07 3-D OIL & GAS 137 mo
2012-11 — 2015-02 CDC SERVICES INC. 28 mo
2010-01 — 2012-10 3-D OIL & GAS 34 mo
2002-10 — 2009-12 DELTEX MINERALS INC. 87 mo
2002-09 — 2002-09 EDMONDSON, H. B. & SON 1 mo
1998-01 — 2002-08 CHEETAH INVESTMENTS, INC. 56 mo
1997-04 — 1997-12 3-D OIL & GAS 9 mo
1996-11 — 1997-03 CHEETAH INVESTMENTS, INC. 5 mo
1994-08 — 1996-10 XERIC OIL & GAS CORPORATION 27 mo
1993-01 — 1994-07 FINLAY ENERGY, INC. 19 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6DELTEX MINERALS INC.24,3002003-08-08
5DELTEX MINERALS INC.24,3001993-06-09
43-D OIL & GAS54,4501990-10-22
2MIDSTATES OIL COMPANY13,5501985-02-07