Title: An Experimental Study of Drag Reduction of Polymer Solutions in Coiled Tubing
Author(s): S.N. Shah, SPE; and Y. Zhou, SPE; Well Construction Technology Center, The University of Oklahoma
Journal: November 2003 SPE Production and Facilities, Pages 280-287
Summary: The drag-reduction (DR) behavior of xanthan gum, partially hydrolyzed polyacrylamide, guar gum, and hydroxyethyl cellulose at various polymer solutions has been experimentally investigated with a full-scale coiled-tubing (CT) test facility that consists of 1-, 1-1/2-, and 2-3/8- in. CT reels. Data analysis revealed that the tubing diameter, curvature ratio, and polymer concentration are important factors affecting the DR in CT. The modified DR envelope is a useful tool for evaluating the DR performance of polymer solutions in CT.