| Agency | Form: (02 )
2079645
12/15/2009 | 1) Provide 24 hr notice of spud to Colby Horton at 970-467-2517 or e-mail at colby.horton@state.co.us. 2) Note surface casing setting depth change from 400’ to 650’. Increase cement coverage accordingly and cement to surface. Set surface casing per Rule 317d, setting surface casing less than the approved depth is a permit violation unless prior written approval is obtained from the COGCC. 3) If completed, cement coverage shall be at a minimum from the TD to 200' above Niobrara and at minimum set stage cement from 1200’ to 50’ above the surface casing shoe. Verify all placed cement with cement bond log and cementing tickets. 4) If dry hole, set 60 sks cement from 50’ below D Sand base to 100’ above D Sand top, 40 sks cement 50’ above Niobrara top, 40 sks cement 1300’, 50 sks cement ½ out, ½ in surface casing, 10 sks cement top of surface casing, cut 4’ below GL, weld on plate, 5 sks cement in rat hole 5 sks cement in mouse hole. Restore surface location. |