| Engineer | Form: (02 )
400111208
12/13/2010 | 1) Provide 24 hr notice of spud to Colby Horton at 970-867-2517 or e-mail at colby.horton@state.co.us.
2) Set surface casing at least 50’ into Pierre Shale for aquifer coverage, (500’ minimum - as proposed). Setting surface casing less than the approved depth is a permit violation unless prior written approval is obtained from the COGCC.
3) If completed, provide cement coverage from TD to a minimum of 200' above Niobrara. Verify coverage with cement bond log. 4) If dry hole, set 35 sks cement 50’ above Niobrara top, 35 sks cement ½ out, ½ in surface casing, 10 sks cement at top of surface casing, cut casing 4’ below GL, weld on plate, 5 sks cement in rat hole & 5 sks cement in mouse hole.
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