Background
After pulling an ESP completion to surface, it was identified that 5 metal bonds were missing from the packer and needed to be recovered to allow for the well to be clean and debris free for recompletion.
A conventional reverse circulating junk sub was deployed to 7,135ft and 63° inclination and reverse circulating was initiated. Upon the tools returning to surface, no bands had been recovered and a second run was sanctioned. After a second run one band was recovered, but it was recognized that a different approach was required to quick remove the remaining ESP metal bands.
Solution and Operation
The Coretrax MaxVax was deployed with a DAV MX circulating sub to create optimum well conditions for debris recovery.
Function tested at surface, the tools were ran to 7,135ft and a 30bbl hi vis pill circulated. On the first run, 2 bands were recovered with a second run recovering the remaining 2 bands leaving the well clean and ready for the next stage of operations.
Achievements
- All bands recovered efficiently, fishing the components quicker than conventional methods
- MaxVax and DAV MX were run together to create the conditions required with the 8.6ppg (65pcf) brine without any requirement to displace incumbent well fluid
- Tools created a powerful fluid vacuum allowing for debris to be captured from the low side quickly and easily, overcoming challenging well deviation (63°)
