Introducing NanoClear® ER—a water-based nanofluid that can be readily incorporated with existing or new waterflood programs to increase the oil recovery factor.
Unlock the waterflooding potential with nanotechnology
Waterflooding is the most common secondary oil recovery method which displaces oil by injecting water. A modified waterflood process can reduce the potential problems regularly associated with waterflooding. NanoClear® ER will provide added value by increasing the efficiency of waterflood processes in an environmentally-friendly and cost-effective manner.
NanoClear® ER comprises of multiple types of nanoparticles (solid particles with diameters of 10-30 nm) with different charges which enhance the performance of waterflooding by their interactions with the rock and fluids in the reservoir.
NanoClear® ER is beneficial in:
Decreasing residual oil saturation by reducing the contact angle and altering wettability by covering the pore surface with nanoparticles
Reducing interfacial tension (IFT) between different phases (oil and water) and increasing effective oil permeability
Increasing sweep efficiency and breakthrough time by improving the mobility ratio
Removing possible organic and inorganic depositions by disjoining force
Reduction in Interfacial Tension
Interfacial Tension (IFT) plays a critical role in multi-phase flow in porous media, particularly for water-oil systems. The lower the IFT, the more efficient the two-phase fluid flow. NanoClear® ER significantly reduces IFT, assisting water to transport more oil.
Reduction in contact angle
Contact angle determines the wettability of the rock and hence the tendency of water to cover the rock surface and therefore, is a vital parameter in determining residual oil saturation. NanoClear® ER reduces the contact angle of water yielding to an improved wetting and lower residual oil saturation.
Improving oil recovery in waterflood
The performance of waterflooding is primarily associated with the oil recovery factor. NanoClear® ER will effectively improve this performance by increasing ultimate oil recovery. Although a better performance will be achieved if waterflood is initiated with NanoClear® ER in the beginning, incorporating NanoClear® at later stages will still yield improvement in oil recovery.
Waterflood performance in different core flood experiments are illustrated below. (Left) Adding NanoClear® at a later stage when regular waterflood has reached plateau still improves the recovery factor by 7%. (Right) Starting waterflood with NanoClear® improves ultimate recovery by 24% compared to a regular waterflood.