First, the subsurface fluid flow can be regulated by optimizing the well production and injection. At present, there are many methods to achieve that.
FERROFLUID HOW TO
Therefore, how to change the direction of the displacement fluid to increase the flooding area plays a vital role in enhancing oil recovery. However, heterogeneities or fractures present in reservoirs can significantly decrease the sweep efficiency, leading to poor utilization ratios, and low oil recovery ( Qitai, 2000 Han, 2007 Li, 2009). Water flooding, as is well recognized, is an effective approach to maintain reservoir pressure and improve oil recovery. This novel phenomenon may provide a new idea to enhance oil recovery based on controllable flooding technology or meet other industrial needs by using ferrofluid. However, the ferrofluid flow velocity and domain can be changed by applying an external magnetic field. The results show that there is basically no flow in low permeability or secondary fracture without a magnetic field, due to the characteristics of porous media and displacement pressure distribution. Later, the effects of the magnetic force on ferrofluid flow in complex porous media, such as heterogeneous and fractured porous media, are investigated.
In this paper, the issue of ferrofluid flow in complex porous media has been studied by numerical simulation, and the validity and accuracy of the numerical algorithm are demonstrated through a 1-D horizontal tube example. Owing to this property, ferrofluid, as a new function material, has raised extensive concern in the oil industry.
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