PROCESS FOR DETECTING A LEAK IN A SUBSEA PIPELINE

摘要

A process for detecting a leak in a subsea pipeline supplying enhanced oil recovery fluid to an oil-bearing formation which process comprises:(a) supplying the enhanced oil recovery fluid to the formation via the subsea pipeline which fluid has a salinity which differs from sea water at the location of the pipeline, and(b) comparing the salinity of water surrounding the supply pipeline with the salinity of sea water at the location of the pipeline.