| Engineer | Form: (02)
1635024
04/29/2011 | Prior to recomplete, operator must:
1) Verify existing cement with a cement bond log.
2) If it is not present as follows, provide remedial cement 200’ above Niobrara (minimum cement top of 7020’), 200’ below Sussex to 200’ above Sussex (minimum coverage 5140’ to 4640’), and 1040’ into the surface casing shoe. Verify remedial cement coverage with cement bond log. |
| Permit | Form: (06)
401575331
04/03/2018 | Requirement for compliance with Rule 309: Operator’s Monthly Report of Operations, Form 7. Each formation that is completed in a well shall be reported every month from the time that it is completed until it has been abandoned and reported for one month as abandoned. Form 7 reporting missing from 3/1999 to 5/1999 for the Codell formation and both the J Sand and the Codell Formations should be corrected from 12/2013. Submittal of a Form 7 in correction of these deficiencies is required for compliance with Rule 309 within 30 days. |
| Engineer | Form: (06)
401575331
04/05/2018 | Plugging
• Provide 48 hour notice of plugging MIRU via electronic Form 42.
• COGCC: Tag RBP at 7340’, place 2 sx of cement on plug.
• COGCC: Increase squeeze volumes to 40 sx at 4745' and 1500'.
• Check for fluid migration or shut-in pressure on the well prior to pumping any plug(open hole, annular or casing) that isolates deepest aquifer or the surface casing shoe (whichever is deeper). Contact COGCC Engineer for revised plugging orders if well is not static at this time, prior to continuing with plugging operations.
• Tag required if the shoe plug, or combined stub/shoe plug, is not circulated to the surface and top of cement must be 50’ into the shoe, or 50’ above the stub, whichever is shallower.
• Place a 50' plug (minimum) at the surface, both inside the inner most casing and in all annular spaces. All other cement plugs, without mechanical isolation, shall have at least 100' of cement left in the casing.
• Properly abandon flowlines as per Rule 1103. File electronic Form 42 once flowline abandonment is complete. |
| Engineer | Form: (06)
401575331
04/05/2018 | Bradenhead Testing
• Prior to the start of plugging operations, a bradenhead test shall be performed and reported if there has not been a reported bradenhead test within the 60 days immediately preceding the start of plugging operations.
• If any of the following conditions exist then sampling of all fluids is required and sampling methods shall comply with Operator Guidance – Bradenhead Testing and Reporting Instructions, Appendix A: Liquid and Gas Sampling as found on the COGCC website, cogcc.state.co.us.
1) The initial pressure measurement on the bradenhead is greater than 25 psi, prior to blowing down any liquid or gas from the bradenhead valve, or
2) Pressure remains at the conclusion of the test, or
3) Any liquids are present anytime during the test. If so, then stop the test as soon as liquids are present and sample before resuming the test.
• Form 17 Bradenhead Test Report shall be submitted within 10 days of the test.
• If samples are collected, copies of all final laboratory analytical results shall be provided to the COGCC within three (3) months of collecting the samples. |
| Engineer | Form: (06)
401575331
04/05/2018 | 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. |