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Experimental Investigation of the Effect of Alkaline and Water Injection on in Situ Formation of W/O Emulsion in Porous MediumNormal access

Authors: S. Palizdan, M. Riazi and M.R. Malayeri
Event name: Saint Petersburg 2018
Session: Chemical Methods of EOR
Publication date: 09 April 2018
DOI: 10.3997/2214-4609.201800224
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.2Mb )
Price: € 20

Summary:
Emulsion formation plays an important role in enhanced oil recovery processes. Forming water-oil emulsion droplets blocks channels through mechanisms of straining and interception. In this study, in a transparent micromodel, the influence of forming emulsion on heavy crude oil displacement by injecting water and alkaline in different ratios is studied. In two different experiments, two different injection orders (water and alkaline) are used and the oil recovery factor is measured. The results show that injecting distilled water as the second solution has no impact on the formed emulsions and displaced oil, but, the efficiency is significantly improved by injecting Na2CO3 solution as the second injecting fluid.


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