Mechanistic Modeling of Alkaline/Surfactant/Polymer Flooding for Snorre Field from Core-scale to Larger Scale of One-Spot Pilot

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2017 by IJETT Journal
Volume-46 Number-6
Year of Publication : 2017
Authors : Rasoul Khaledialidusti, Jon Kleppe, Medad Tweheyo, Kjetil Skrettingland
  10.14445/22315381/IJETT-V46P259

MLA 

Rasoul Khaledialidusti, Jon Kleppe, Medad Tweheyo, Kjetil Skrettingland "Mechanistic Modeling of Alkaline/Surfactant/Polymer Flooding for Snorre Field from Core-scale to Larger Scale of One-Spot Pilot", International Journal of Engineering Trends and Technology (IJETT), V46(6),337-354 April 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
A considerable amount of oil resides in the Snorre reservoir in the North Sea. The impact of low-salinity-water flooding was investigated from core-scale using coreflood tests to larger scale of one-spot pilot using Single-Well-Chemical-Tracer (SWCT) tests before. Since the results showed a negligible amount of oil recovery, the alkaline/surfactant/polymer (ASP) flooding has been selected after the evaluation of the feasibility of all possible chemical enhanced oil recovery (EOR) methods based on the reservoir conditions. The potential of ASP has been evaluated through mechanistic modeling from core scale to large scale of one-spot pilot using SWCT test. First, the mechanistic modeling of ASP coreflood has been performed to make sure about the proper propagation of alkali, in-situ surfactant (soap), and surfactant. Second, the ASP injection has been also evaluated at larger scale of one-spot pilot using SWCT method. Mechanistic modeling of ASP flooding is highly sophisticated because of the complicated ASP phase behavior and the reactions that affect the process. Almost all effective reactions have been taken into account. Although low-salinitywater flooding as a standalone method could not improve oil recovery, the effect of low-salinity-water on the ASP efficiency has been studied to design and optimize the ASP method.

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Keywords
ASP flooding, Single-Well-Chemical- Tracer (SWCT) method, low-salinity-water flooding, oil saturation.