Formation damage during waterflooding
What is it about?
This research explains about the possible formation damage,in this study a detailed model is developed that predicts not only the deposition of asphaltene, formation dissolution and its precipitation, but also considers the irreversible formation damage i.e. cementation in the porous media. As a result, we developed a simulator in Matlab to model the cementation of the deposition of asphaltene, dissolution and precipitation of carbonate particles as a function of time and space. Therefore, the derived model is very useful and efficient in providing a true picture of the amount of porosity and permeability impairment during waterflooding. We also performed sensitivity analyses of different injection parameters, formation properties, its temperatures and depths, in order to control or minimize the irreversible formation damage (cementation) in the porous media.
Why is it important?
• During secondary recovery, water may react and disturb reservoir fluid equilibrium causing asphaltene deposition and formation dissolution. • The precipitation of dissoluted particles on deposited asphaltene may lead to cementation in the porous media. • It is observed that this cementation may cause an irreversible formation damage to the reservoir.
The following have contributed to this page: Dr Ilyas Khurshid