In May 2019, Shell UK E&P contacted the Helix Well Ops Light Well Intervention Vessel; Well Enhancer to conduct a Coiled Tubing Intervention in a horizontal well using their riser system for production optimisation. This CT system had been in active use since 2016, however, based on operational lessons learnt, it underwent a series of upgrades and improvements to create a more efficient and reliable means of Coiled Tubing Deployment. The intervention carried out in May was the first since the upgrades were completed.
The technical objectives for the intervention were:
Drift and clean-up using a motorised venturi to 14,700 ft
Perform shut-in and flowing PLT log across 4,000ft of perforations
Re- perforate 1,000ft of reservoir section
The operations were completed on time and on budget.
This technology application has now been proven and enables Coiled Tubing opportunities, previously considered uneconomical or technically unachievable unless using a rig, to be sanctioned.
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