SHACKELFORD

Oil // district 9 // lease#11392

op: KEYSTONE ENERGY OIL & GAS, INC.

cum_oil

39k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2003-08

peak_month

1993-05

-- production_history

cum_oil: 39,289 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,130 BBL/mo

Di (annual)

40.5%

b-factor

0.0

EUR

33,495 BBL

R-squared

0.744

type

exponential

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4USENCO-KEYSTONE19,0001984-11-07
5USENCO-KEYSTONE19,0001984-11-07
7USENCO-KEYSTONE19,0001984-11-07
3USENCO-KEYSTONE19,0001984-11-06
6USENCO-KEYSTONE19,0001984-11-05
2USENCO-KEYSTONE19,0001984-11-02
1USENCO-KEYSTONE19,0001984-10-10
EOF // multi-state drilling data platform // 2026