ROBERTSON, GRACE TR. "A"

Oil // district 11 // lease#10613

op: ANADARKO PETROLEUM CORPORATION

cum_oil

19k BBL

cum_gas

0 MCF

wells

4

production

1993-01 — 1996-06

peak_month

1993-02

-- production_history

cum_oil: 18,836 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

578 BBL/mo

Di (annual)

10.6%

b-factor

0.0

EUR

65,227 BBL

R-squared

0.423

type

exponential

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5ARCO OIL & GAS CO.23,9001998-09-14
1ARCO OIL & GAS CO.13,8001990-11-26
242-107-00081--------
342-107-00082--------
EOF // multi-state drilling data platform // 2026