| Customization: | Available |
|---|---|
| After-sales Service: | 18mths |
| Warranty: | 18mths |
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Vortex AICD Screen
The vortex AICD screen is an innovative device designed to enhance oil recovery in horizontal wells by controlling unwanted early water influx. It combines a MGC screen with a sealed-off base pipe that forces inflows through the vortex AICD module, which acts as an autonomous regulator that generates different restrictions to the fluids with different WC% (Water Cut%). When flowing through the module, the oil flow encounters the least restrictions, while that of water flow could be over 10 times higher (depends on flow rate). In combination with proper zonal isolations, the vortex AICD device could effectively resist production from high WC% zones, while the oil producing zones are not affected. In this way, horizontal wells could have a longer economic life with a more balanced producing profile.
The AICD module has a flow path selector and a nozzle in the center of unit that acts as a normal ICD. The module is manufactured with high-strength tungsten-cobalt alloy, containing no moving parts or elastomers that could wear out.
The AICD module works well with fluid viscosity from 10cP to 300cP from known results, and more lab tests are being conducted to test its limits.
Applications:
-Sand control and water influx control in horizontal wells.
Features:
- Generates much higher restriction to water than to oil, the contrast could be >10 times (depend on rate)
- Tungsten-cobalt module with no moving parts, long working life
- Effective sand control provided by MGC screens
- Tailoed design on screens, AICD modules available.
Benefits
-Longer producing life, enchanced oil production
Working Principles
The AICD module utilizes a vortex design as a flow selector, that guides water and oil into different paths, and form different flow regimes: as show in the graph below, wate rhas higher density and lower viscosity, and tends to follow the outer paths, generating more turbulence and higher frictions; meanwhile, oil has lower density and higher viscosity, and tends to take the 'short cuts' into the nozzle, encountering less turbulence and firctions.
Extensive tests has been conducted with various fluids and flow rates, the results show below indicates that vortex AICD is highly sensitive to WC% changes, and works in a wide range of flow rates, with various oil viscosities.
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