Project Overview

MSi performed an extensive parametric study to determine the potential flow assurance issues at a water depth of 3000 meters. The study included steady-state and transient thermal and hydraulic analyses. Evaluated subsea and dry tree production scenarios, different riser designs, necessary insulation levels for wax and hydrate control. Wax deposition rates, locations, and volumes. This project encompassed four separate projects which included an initial scoping study; development/evaluation of a dry tree riser design in conjunction with MCS; development/evaluation of a subsea flowline/riser system which a riser design company; and a full field architecture study with an larger engineering contractor/equipment supplier. Developed comprehensive flow assurance document.

 MSi/MCS Cooperation

MCS and MSi worked together to evaluate the dry tree riser development concept. In particular, MSi validated the proposed riser configurations developed by MCS in terms of their thermal and hydraulic performance, focusing on wax and hydrate formation issues under both steady state and transient conditions. MCS, in turn, worked to determine physical integrity and structural stability of the riser concepts which MSi deemed to be the most advantageous from a flow assurance perspective.

Working in parallel, the MCS/MSi team arrived at a common riser design that optimized the combined flow assurance and integrity issues and presented the results to the Anton/Astrid partners for their approval.