< leases

ROCKER B "QQ"

Oil · District 7C · Lease #14621

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

50k BBL

Cum Gas

308k MCF

casinghead

Wells

3

Production

1997-07 — 2012-06

Peak Month

1997-09

Production History

Cum Oil: 49,762 BBL Cum Gas: 308,256 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

781 BBL/mo

Di (annual)

24.8%

b-factor

0.4

EUR

58,703 BBL

R-squared

0.633

type

hyperbolic

Operator History (from monthly production reports)

2008-01 — 2013-02 PIONEER NATURAL RES. USA, INC. 62 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
1997-07 — 1998-03 HUGOTON ENERGY CORPORATION 9 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
442-235-33959PIONEER NATURAL RES. USA, INC.17,4002006-03-23
242-235-33696PIONEER NATURAL RES. USA, INC.17,2001997-10-16
142-235-33672PIONEER NATURAL RES. USA, INC.16,7001997-06-20