| Engineer | Form: (04)
400553557
02/11/2014 | 1) Provide remedial cement 200’ above Niobrara (minimum depth 7140').
2) The Sussex formation is productive within one mile of this well. Therefore, cement isolation, which does not currently exist across it, must be provided, by using a perforate and squeeze or equivalent method so that at a minimum there is cement from 50’ above to 50’ below the Sussex formation.
3) The additional cement referenced shall be placed as indicated and comply with Rule 317.i. The placed cement shall be verified with a CBL and documented with a Form 5 Drilling Completion Report. |
| Engineer | Form: (04)
401268644
05/03/2017 | 1) Prior to starting repair work a bradenhead test shall be performed. If the beginning pressure is greater than 25 psi, or if pressure remains at the conclusion of the test, or if any liquids were present contact COGCC Engineer for sampling requirements before pumping any cement. The Form 17 shall be submitted within 10 days of the test.
2) After Sussex/Shannon squeeze run a CBL to surface to confirm newly placed cement and uphole cement before shooting squeeze holes for additional cement (holes planned for 575’). If cement on CBL requires a change to the second squeeze contact COGCC engineer for updates.
3) The additional cement shall be verified with a CBL and documented with a Form 5. |
| Engineer | Form: (06)
401469900
03/20/2018 | Post Plugging Reporting
• Form 17 Bradenhead Test Report shall be submitted within 10 days of the test.
• File electronic Form 42 once flowline abandonment is complete.
• 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.
• Correct form 7 reporting prior to passing the Form 6 SRA.
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| Engineer | Form: (06)
401469900
03/20/2018 | Plugging
• Provide 48 hour notice of plugging MIRU via electronic Form 42.
• 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. |
| Engineer | Form: (06)
401469900
03/20/2018 | 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. |
| Engineer | Form: (06)
401469900
03/20/2018 | 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. |