| Engineer | Form: (02)
401893481
06/12/2019 | 1) Submit Form 42 online to COGCC 48 hours prior to MIRU (spud notice).
2) Run CBL to determine existing cement intervals or submit CBL from original completion if available.
3) Provide cement coverage to a minimum of 200' above shallowest completed interval and across Cheyenne-Dakota from 2800-2300. Codell would need to be cemented if completed. Verify coverage with cement bond log. |
| Engineer | Form: (06)
402585083
01/29/2021 | Plugging
1) Provide 48 hour notice of plugging MIRU via electronic Form 42.
2) Properly abandon flowlines as per Rule 1105. File electronic Form 42 once abandonment complete. Within 90 days of an operator completing abandonment requirements for an off-location flowline or crude oil transfer line the operator must submit a Flowline Report, Form 44.
3) Plugs and squeezes will be placed as stated in the Plugging Procedure section of the approved NOIA unless revised by COA or prior approval from COGCC is obtained.
4) The wellbore must be static prior to placing cement plugs which are to be a minimum of 100' in length for all but surface plugs. Mechanical isolation requires a 25' cement plug, minimum. For plugs not specified to be tagged, a tag is required if circulation is not maintained while pumping plug and displacing to depth. Tag at tops specified or shallower. Notify COGCC Area Engineer before adding cement to previous plug.
5) Place a 50' plug (minimum) at the surface, both inside the inner most casing and in all annular spaces. Surface plugs shall be circulated to surface. Confirm cement to surface in all strings during cut and cap.
6) With the Form 6 SRA operator must provide written documentation which positively affirms each COA has been addressed.
7) Contact COGCC Area Inspector prior to commencing plugging operations.
8) After placing the shallowest hydrocarbon isolating plug (5385'), operator must wait a sufficient time on all subsequent plugs to confirm static conditions. If at any time after placing this plug there is evidence of pressure or of fluid migration, contact COGCC Area Engineer before continuing operations.
9) Add 10 sx casing plug at 1870-1770'.
Bradenhead cement to surface prior to reentry.
Verbal approval given to Ted Pagano, Helena Resources, to proceed with attached procedure.
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| Engineer | Form: (06)
402585083
01/29/2021 | Venting
Operator shall implement measures to control unnecessary and excessive venting, to protect the health and safety of the public, and to ensure that vapors and odors from well plugging operations do not constitute a nuisance or hazard to public welfare.
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