The IntelliZone Compact* modular multizonal management system is a single unit that enables operators to maximize production control, reduce well costs, simplify well planning, and increase downhole control.
The IntelliZone Compact system provides pressure and temperature readings from each zone and seamless zonal isolation and control in multizone wells. Through either a local SCADA or remote connection, the system’s communication capabilities optimize reservoir drainage, facilitate well testing, and monitor changes in downhole conditions in real time.
Multizone management
Up to 15 IntelliZone Compact systems can be installed using only five control lines. The use of a software-controlled automatic power unit allows multiple zones to be managed simultaneously and in real time, greatly increasing well control and minimizing time-consuming and risky interventions.
Compact design
The integrated components of the IntelliZone Compact system are designed as a single assembly. Approximately 30 feet long, the length is comparable to that of a tubing joint but about half the length of traditional intelligent completions, making it simpler to handle and install.
Fast deployment
The IntelliZone Compact system is fully assembled and tested at the manufacturing facility and is delivered ready to be deployed downhole. This single-unit system streamlines planning, delivery, and onsite preparation, and it reduces rig time during installation. The ability to install more zones on fewer control lines further simplifies the deployment.
Simple control
With control logic programmed into the surface control system, valve operation is a simple two-click command with absolute valve position feedback after each actuation, greatly increasing well control and maximizing production.
IntelliZone Compact Components
Multiport packers
Field-proven hydraulically set packers available in two retrieval options: cutto-release and straight pull-to release.
These packers allow for isolation between zones and up to 5 ×¼-in control lines to be passed through.
Flow control valves
The systems valves come in two options: on/off or multiposition.
A built-in collet-holding mechanism reduces operational risk by ensuring the valve position does not unintentionally change.
Dual PT gauges
The PT gauges provide measurements from both the annulus and the tubing in every zone, with up to three zones monitored on a single electric cable.
Intellitite connectors
With more than 4,000 installations and 100% survival, the Intellitite* electrical dry-mate connector removes leak paths and is available in fully welded or redundant configurations.
Position sensors
Sensors integrated into flow control valves identify flow control choke positions and report back to surface its current position through the gauge electrical line.
Multidrop modules
Fewer hydraulic control lines than with conventional intelligent completions reduce installation complexity and wellhead penetrations.
Surface control system
When the valve position needs to be changed locally or remotely, the system automatically directs pressure sequences to the appropriate control lines for reliable valve operation.
WellBuilder software
The WellBuilder* completion system design software uses well data to simulate production scenarios, compare completion designs, explore their implications for production, and derive the optimal completion solution.
Operating software
Visualization and control software enables operators to easily manage well production with responsive control of downhole valves through two-click commands.
Track Record & Reliability
The IntelliZone Compact system and its components were designed and qualified at the Schlumberger Reservoir Completions Center in Houston. This 35,000-square-foot Schlumberger facility and its quality systems are certified to conform to ISO 9001 standards.
When an order is received, a system is configured to an operator’s particular specifications. Comprehensive testing and analysis of the system occurs at every stage of product development, from the initial test of each component to the final system-level qualification, ensuring the reliability and robustness of the entire system for the specified downhole conditions.
Case Studies
IntelliZone Compact System Cuts Rig Time, Prevents Water Breakthrough, and Saves Operator USD 400,000 per Well
Optimize multizone production in marginal offshore oil field
An operator planned two wells in a marginal field offshore east Malaysia. The field consisted of multipledipping heterogeneous sandstone reservoirs with an unconsolidated formation. The multistacked reservoirs had a large gas cap with only marginal oil in place. Achieving maximum reservoir contact in this type of formation required horizontal wells.
Used IntelliZone Compact system to manage reservoir zones
After studying various well completion designs—including horizontal wells with passive versus active zonal control—Schlumberger recommended the IntelliZone Compact modular multizonal management system. This intelligent zonal flow control system would maximize reservoir drainage points and minimize overdepletion from the high-permeability, less productive zones, thereby enhancing reservoir performance and improving project economics.
The IntelliZone Compact system continuously monitors the flow from individual zones and enables adjustments to zonal contribution. This flow control function prevents or minimizes water/gas encroachment, and in this case, it would also help control both the aggressive gas cap expansion at the heel of the well and, as the field depleted, the aquifer’s coning up from the dipping well toe.
The modular, compact, integrated intelligent completion system is designed, assembled, and fully tested off site before shipment. Preconfiguring and pretesting accelerate final well commissioning at the rig site and, because there are fewer connecting joints and control line splices to make up on site, installation time and service quality incidents are significantly reduced.
Upfront engineering analysis ensures that the valve-opening sizes and positions are tailored to the range of reservoir and production characteristics for the target well. The final completion assembly integrates multiple components, including flow control valves, zonal isolation packers, permanent pressure and temperature sensors, and a mechanism that provides absolute feedback of valve choke position—all into one assembly.
Produced more than 99% oil and saved USD 400,000 per well
Because the system arrived at the wellsite ready assembled, the company experienced zero NPT before and during installation. Installation rig time was reduced to just 33% of the time required by conventional passive intelligent completions—8 hours per zone instead of the typical 24 hours per zone. The time saved was approximately 32 hours for each well, an equivalent of USD 400,000 per well. Seven months after the intelligent completions were installed, the two wells were producing more than 99% oil with a water cut of less than 1%.
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