ROCKER B -EE-

Oil // district 9 // lease#6079

op: PARKER & PARSLEY DEVELOPMENT L.P

cum_oil

42k BBL

cum_gas

0 MCF

wells

6

production

1993-01 — 1997-09

peak_month

1993-01

-- production_history

cum_oil: 41,602 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,414 BBL/mo

Di (annual)

71.3%

b-factor

2.0

EUR

178,558 BBL

R-squared

0.637

type

hyperbolic

-- wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6GRAHAM ROYALTY, LTD.16,5501992-09-01
5GRAHAM ROYALTY, LTD.16,5501992-07-22
1 XCOX, JOHN L.17,5001981-12-31
242-235-30169--------
342-235-30170--------
442-235-30171--------
EOF // data source: Texas Railroad Commission // 2026