After experiencing multiple ESP failures, a customer
needed to reduce well downtime when replacing
the ESP. In Ecuador, it is typical for rigs and hoists
to take 7 to 10 days to respond to an ESP failure
and then an additional 4 days to replace an ESP on
jointed tubing. For this well, the inability to quickly
source a rig or rapidly retrieve ESPs would result
in deferred production of up to 9,000 bbl for each
heavy workover required.
In response to this challenge, the 550 series ZEiTECS Shuttle rigless ESP replacement system was installed
in the well with a standard 450/400 series ESP. The ESP ran for 72 days when it experienced
an unexpected failure. After the initial response, the ZEiTECS Shuttle system was used to
riglessly replace the ESP on coiled tubing in 1 day, 21 hours, and 15 minutes.