| Agency | Form: (02)
2581239
05/17/2010 | COGCC ENG COA – SME
1) Provide 24 hr notice of spud to Bo Brown at 970-392-4124 or e-mail at bo.brown@state.co.us
2) Note surface casing setting depth change from 650’ to 700’. 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, provide cement coverage from TD to a minimum of 200’ above the Niobrara. Verify coverage with cement bond log.
4) If dry hole, 40 sks cement 50’ above Niobrara top, 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 location. |
| Engineer | Form: (02)
2583187
08/25/2010 | 1) Provide 24 hour notice of MIRU to Bo Brown at 970-397-4124 or e-mail at bo.brown@state.co.us.
2) If completed, comply with Rule 317.i and provide cement coverage from end of first string and bottom of liner to a minimum of 200’ above the Niobrara. Verify Niobrara coverage with cement bond log.
3) Comply with Rule 321. Run and submit Directional Survey from TD to base of surface casing. Ensure that the wellbore complies with setback requirements in commission orders or rules prior to producing the well.
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