CEMENT-LINED PIPES FOR WATER LUBRICATED TRANSPORT OF HEAVY OIL

This paper presents different strategies for preventing oil from fouli ng the walls of core-annular flow pipelines and also for restart from an unexpected pipeline shut-down. The most promising of these strategi es is to use cement-lined pipes. Experiments presented here show that hydrated cement-lined pipes are highly oleophobic and therefore resist fouling for long term. A pilot scale cement-lined core-annular flow p ipeline using No. 6 fuel oil never fouled in over 1000 h of operation. Repeated and determined attempts to soil properly hydrated cement-lin ed pipes with heavy Venezuelan crudes always failed.