FloCheck (Production)
High-rate check valve for multi-zone producers preventing crossflow
Page last modified
October 13 2025
The FloCheck Production is a valve system designed for multi-zone oil and gas wells with different pressure levels. It functions as both a conventional Inflow Control Device (ICD) and a permanent check valve, making it particularly valuable for wells with varying depletion levels across different zones.
The device features a nozzle inlet and free-floating disc mechanism. During normal production flow, the disc moves away from the inlet, allowing fluids to pass through freely. However, when flow reverses direction, the disc automatically seals against the inlet, effectively preventing backflow from higher-pressure zones into lower-pressure zones. This autonomous operation helps maintain optimal production management without manual intervention.
The FloCheck Production remains closed as long as overbalance pressure exists. Once this pressure is removed through production or sufficient depletion of higher-pressure zones, the disc moves away from its seat, enabling flow from lower-pressure areas.
Originally developed for high-rate, multi-layer gas wells, the system is applicable to both carbonate and sandstone reservoirs and can be installed in new or existing wells. It mounts on a sub or within a sand screen and is compatible with gravel packing operations. The device is particularly beneficial for enabling complete well perforation and completion in a single operation, eliminating the need for re-entry and sequential perforation in multi-zone, multi-pressure wells. It withstands high flow rates and pressure drops while providing density-dependent functionality.
Pros & Limitations
1
Provides permanent check-valve capability
1
Prevents crossflow from higher-pressure zones into lower-pressure zones
1
Enables autonomous production management
1
Can be applied to both new and existing wells
1
Enables multi-zone full well perforation and completion at once
1
Eliminates the need for re-entry for sequential perforation
1
Compatible with gravel packing operations
1
Applicable for both carbonate and sandstone reservoirs
1
Originally developed for high-rate, multi-layer gas wells
1
Mounted within sand screen for easy integration
0
Requires a separate injection valve if any injection to the well is required
Specification
| Title | Description |
|---|---|
| Theme/Discipline | Reservoir EngineeringWell OperationsProduction Technology |
| Core Tech | Hardware Tool |
|
Type
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Check valve with ICD functionality
|
|
Primary Function
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Autonomous production management and crossflow prevention
|
|
Design
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Nozzle inlet and free-floating disc
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|
Operating Mechanism
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Disc pushed away during production flow, seals against inlet during reverse flow
|
|
Pressure Drop Control
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Density dependent functionality behavior
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Reservoir Compatibility
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Both carbonate and sandstone reservoirs
|
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Mounting
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Mounted on joint/screen
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Application Wells
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Multi-zone/layer producers with varying depletion levels
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Original Development
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High-rate, multi-layer gas wells
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Well Compatibility
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Both new and existing wells
|
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Crossflow Prevention
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Prevents flow from higher-pressure to lower-pressure zones
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Additional Features
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Shut-off option (SSD), check functionality for wash pipe free circulation
|
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Portfolio Compatibility
|
Compatible with TAQA's plug and play portfolio
|
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Gravel Pack
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Yes
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Technology Readiness Level
The Technology Readiness Level (TRL) indicates the maturity level of novel technologies. Learn more about the TRL scale used by us.
[9/9]
Development
Technology demonstration
Mature / Proven
Relative Business Impact
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