< leases

ROCKER, B -G-

Oil · District 7C · Lease #6235

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

17k BBL

Cum Gas

112k MCF

casinghead

Wells

6

Production

1993-01 — 2015-05

Peak Month

1993-05

Production History

Cum Oil: 17,281 BBL Cum Gas: 111,880 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

269 BBL/mo

Di (annual)

42.9%

b-factor

0.6

EUR

15,566 BBL

R-squared

0.825

type

hyperbolic

Operator History (from monthly production reports)

2014-12 — 2015-12 DISCOVERY NATURAL RESOURCES LLC 13 mo
2008-01 — 2014-11 PIONEER NATURAL RES. USA, INC. 83 mo
2006-05 — 2007-12 CIMAREX ENERGY CO. OF COLORADO 20 mo
2004-11 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 18 mo
1999-10 — 2004-10 NADEL AND GUSSMAN PERMIAN,L.L.C. 61 mo
1998-04 — 1999-09 CHESAPEAKE OPERATING, INC. 18 mo
1995-09 — 1998-03 HUGOTON ENERGY CORPORATION 31 mo
1993-05 — 1995-08 CONSOLIDATED OIL & GAS, INC 28 mo
1993-01 — 1993-04 AMAX OIL & GAS INC. 4 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
642-235-31615DISCOVERY NATURAL RESOURCES LLC16,8001980-08-11
542-235-31466DISCOVERY NATURAL RESOURCES LLC16,7501979-11-20
142-235-30248DISCOVERY NATURAL RESOURCES LLC------
242-235-30247DISCOVERY NATURAL RESOURCES LLC------
342-235-30259DISCOVERY NATURAL RESOURCES LLC------
442-235-30277DISCOVERY NATURAL RESOURCES LLC------