Superiority of using polyurethane foam injection over nitrogen freezing technique as core preservation method: Experimental approach

作者：Sulaiman A D I^*; Maikobi A A; Chinezelum O S; Abdulsalam S

来源：Journal of Canadian Petroleum Technology, 2008, 47(7): 15-18.

DOI：10.2118/08-07-15-tb

This research is aimed at proving the superiority of using polyurethane foam injection over the nitrogen freezing technique as a preservation method for core samples. Controlled experiments comparing core samples preserved by polyurethane foam injection, otherwise known as the resin method, and those preserved with the nitrogen freezing technique were conducted. Three core samples were preserved by the resin method and three other samples were frozen using nitrogen. Their weight losses with time under various conditions were monitored. A graphical method was adopted for the comparative analysis. The results showed that core samples preserved with polyurethane foam injection exhibited higher stability under every condition over a longer period of time than did the ones preserved with the nitrogen freezing technique.

• 出版日期2008-7