Control and monitor zones with all-electric intelligent completion
Schlumberger recommended the Manara system, an all-electric intelligent completion that can be deployed at extended distances in one or two trips to cover multiple structural plays from one onshore drillsite. Powered and controlled by a single electric umbilical combined with the inductive coupler downhole connector, the technology enables real-time downhole zonal intelligence and control.
The onboard production-monitoring suite with infinite choking capability enables effective zonal cleanup, productivity assessment and optimization, and early identification and management of future production challenges. Digital-ready by design, the Manara system delivers health data to a centralized production database, enabling continuous monitoring for operations integrity. WellWatcher Advisor software can then be used to monitor and manage drainage through production and reservoir workflows in real time—all without intervention!
Manage drilling damage and reservoir uncertainties in real time
At the initial well kickoff, engineers fully opened the flow control valves for all six zones and measured oil production, with significant contributions from zones 5 and 6, less from zones 1 and 2, and no flow from zones 3 and 4. Reservoir analysis indicated that zones 3 and 4 should be significant producers, so the operator believed the permeability was damaged with drilling mud. With a conventional completion, cleaning the tight zones would have been impossible.
With the Manara system in the well, the engineering team choked zones 5 and 6 to increase drawdown in the damaged zones. The pressure change induced flow that cleaned up the permeability damage without further intervention. After the zones stabilized, the engineers reopened all the flow control valves and measured overall production, with contributions from all zones, including the two previously damaged zones.
To maximize well production, the engineers then used WellWatcher Advisor software to calculate the optimal setting for the flow control valve in each zone. The result was a production increase of 25% compared with the production when all valves were fully open—including 47% from the two damaged zones that would not have produced at all without the real-time drawdown control.
Using the all-electric completion system for the cleanup and optimization process saved the operator approximately 2 days compared with using slower hydraulically actuated valves.