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400316652 05 8960 BONANZA CREEK ENERGY OPERATING COMPANY LLC

410 17TH STREET SUITE #1400

DENVER CO 80202 Stephen Wolfe 720 440-6110 Stephen Wolfe Sr Prod Engr 2012-08-16T09:52:24.587-06:00 DRAFT mfinnegan 2012-08-16T09:52:24.587-06:00 mfinnegan stephen.wolfe@alumni.mines.edu 0.00000 swolfe@bonanzacrk.com swolfe swolfe 2014-04-26T17:04:12.25-06:00 400316652 05 123 26114 00 WELD ALLES 41-31 NENE 31 5N 63W 6 600 FNL WATTENBERG 600 620 90750 FNL FWL 620 FWL 2007-08-04T00:00:00-06:00 600 2007-08-08T00:00:00-06:00 FNL 620 OW FWL 6714 6714 6700 6700 4577 4589 CBL 40.361610 -104.471810 2007-09-11T00:00:00-06:00 Larry Robbins 2.1 31 5N 63W 31 5N 63W true Final Completion 400316652 400316652 FORM 5 SUBMITTED 400316652.pdf 400316652 400596702 WELLBORE DIAGRAM Alles 41-31 Csg Rep WBD.pdf 27205 400316652 400596703 CEMENT JOB SUMMARY Alles 41-31 Csg Rep Cmt Log.pdf 235002 400316652 400596704 CEMENT JOB SUMMARY Alles 41-31 Csg Rep Cmt ticket.pdf 267519 400316652 400596705 CEMENT JOB SUMMARY Alles 41-31 Csg Rep P-test.pdf 708466 400316652 1ST 7 7 8 4 1 2 11.6 6714 450 6714 3680 0 CBL ACTUAL 400316652 SURF 12 1 4 8 5 8 24 575 410 575 0 0 CALC ACTUAL 400316652 26498 1ST RETAINER 3147 450 938 3244 400316652 cement work 400316652 cement work Determined casing had holes from 3212-29'. Set cement retainer at 3147' and circulated 450 sacks through holes taking returns on the surface. Drilled out retainer and ran braidenhead test. Held 1500 psi for 60 mins. Ran CBL on 12/13/2012 and found TOC at 938'. Thread was being aborted.