Use of Low-Shear Pumps and Hydrocyclones for Improved Performance in the Cleanup of Low-Pressure Water

Although the advantages of using hydrocyclones for oily water cleanup are well proven, their use has been limited to applications where adequate system feed pressure for satisfactory operation was present. To use hydrocyclones in low-pressure operations, research testing was undertaken to determine the most suitable pumping system. Successful field trials with a low-shear progressive cavity pump and a single-liner hydrocyclone were conducted in the U.S. These trials provided the basis for full-scale tests on the Hutton platform in the U.K. sector of the North Sea. These tests demonstrated the feasibility of using large, low-shear, progressive cavity pumps in conjunction with multitude hydrocyclone units