ZIMMER, JOHN

Oil // district 2 // lease#4505

op: PETRA OLEUM CORP.

cum_oil

345k BBL

cum_gas

0 MCF

wells

8

production

1993-01 — 2026-03

peak_month

2008-03

-- production_history

cum_oil: 345,224 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,660 BBL/mo

Di (annual)

43.1%

b-factor

1.1

EUR

250,625 BBL

R-squared

0.694

type

hyperbolic

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12PETRA OLEUM CORP.12,9002018-12-31
7PETRA OLEUM CORP.43,6002008-03-26
1PETRA OLEUM CORP.12,3602006-08-30
6PETRA OLEUM CORP.32,8002005-11-01
2PETRA OLEUM CORP.12,6572003-09-30
11HOWELL PETROLEUM CORPORATION15,0001984-05-24
342-469-01271--------
442-469-01272--------
EOF // data source: Texas Railroad Commission // 2026