alexa Effect Of Polymer Additives As Foam Stabilizer For CO2 Foam Flooding
ISSN:2157-7463

Journal of Petroleum & Environmental Biotechnology
Open Access

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3rd International Conference and Expo on Oil and Gas
July 13-14, 2017 Berlin, Germany

Khaled Abdalla Elraies and Shehzad Ahmed
Universiti Teknologi Petronas, Malaysia
Posters & Accepted Abstracts: J Pet Environ Biotechnol
DOI: 10.4172/2157-7463-C1-035
Abstract
Polymer enhanced foam (PEF) provides an additional strength over conventional CO2 foams for mobilizing oil from the unswept low permeable oil rich zones during an enhanced oil recovery process. The efficiency of the process depends on two major factors i.e., stability and apparent viscosity of PEF. In this study, an experimental investigation of apparent viscosity and stability of polymer enhanced CO2 foam is presented with an objective to access the polymer performance and to identify the best performing polymer under reservoir conditions of 1500 psi and 80°C. For this purpose, a conventional standard HPAM polymers and an associative polymer i.e., Superpusher P329 were used in combination with a widely used foamer i.e., alpha olefin sulfonate (AOS) and a foam stabilizer i.e., betaine. Foam stability tests were conducted in the presence of crude oil using FoamScan. Whereas for foam rheological study, a high pressure high temperature Foam Rheometer was utilized and the foam was sheared over the range of 10 to 500 sec-1 inside the recirculating loop. As compared to other HPAMs, an associative polymer i.e., Superpusher P329 significantly amplified foam longevity and provided a more prolonged liquid drainage. A shear thinning behavior was observed for the entire range of shear rate tested and for both kind of polymer. HPAMs were found ineffective and the PEF viscosity was found equivalent to that of polymer free foam. Superpusher P329 showed interesting combination with AOS and significant viscosity enhancement has been reported in this paper.
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