| Engineer | Form: (02 )
1633003
2/14/2011 | 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 7005’), 200’ below Sussex to 200’ above Sussex (minimum coverage 4850’ to 4350’), and 968’ (DV tool) into the surface casing shoe. Verify remedial cement coverage with cement bond log. |
| Engineer | Form: (04 )
400589721
6/4/2014 | 1) Please remember to put "Safety Prep" sign up after this work is completed.
2) If the well will be restored to production in less than 60 days there is no need to file any additional paperwork.
If the well will be shut in for more than 60 days you will need to file a form 5A (temporary abandonment of zone) and report casing pressure test results. When the well is returned to production you will need to file another file 5A (temporary abandoned zone being returned to production). |
| Engineer | Form: (04 )
400637938
7/7/2014 | 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: (06 )
401568640
3/29/2018 | Plugging
• Provide 48 hour notice of plugging MIRU via electronic Form 42.
• Due to the surface casing pressure reported on the most recent Form 17, operator must wait 8 hrs after pumping squeeze at 2050’ and check for fluid migration or shut-in pressure on the well. Contact COGCC Engineer for revised plugging orders if well is not static at this time prior to continuing with plugging operations.
• COGCC change: Increase height of casing plug across DV tool from 900-1000’ to 600-1000’ for aquifer isolation. Adjust cement volume accordingly.
• 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 )
401568640
3/29/2018 | 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 )
401568640
3/29/2018 | 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. |