Electrically heated pipe-inpipe - A qualified reelable technology to meet flaw assupance challenges

摘要

Hydrate and wax plugging often limit subsea tieback distance and deepwater field development, and can make remote oil and gas resource recovery uneconomic or excessively risky. Maintaining the produced fluids temperature outside the critical hydrate or wax formation zone often can be done using a high-performance passive insulation system such as pipe-in-pipe. However, flow assurance trends suggest that passive insulation alone does not suffice for the development of the most demanding fields or requires added flow assurance strategies involving large amount of chemical inhibitors. To address this, Technip has developed and qualified a reelable electrically heated pipe-in-pipe system (EHPIP). It combines the best available passive insulation technology at atmospheric pressure with safe and reliable electrical trace heating to optimize performance and minimizing potential opex and topside capex