Patent ID: 9151415
Filing Date: 2015-10-06
Classification: F16L,F17D

Abstract:
1. A tubular pipe adapted for reducing the friction of multiphase oil/water mixtures flowing through the tubular pipe, the tubular pipe comprising an interior wall and a central cavity, the pipe defining an axial direction along the length of the pipe, the interior wall comprising: (a) a first textured region, the first textured region comprising a hydrophilic coating having an affinity for water, the hydrophilic coating being adapted for reducing the adhesive forces of transported oil along the interior wall at the first textured region, (b) a second textured region, the second textured region comprising a hydrophobic coating having an affinity for oil, the hydrophobic coating being adapted for reducing the adhesive forces of transported water along the interior wall at the second textured region, and (c) wherein the first and second textured regions comprise first alternating bands of first textured regions and second textured regions upon the interior wall of the tubular pipe.