Relief Well Injection Spool (RWIS)
Since 2010, Trendsetter Engineering and Add Energy have teamed to work together on multiple projects. In 2015, the companies came together with the aim to further develop technology that benefits the energy industry by increasing safety and allowing for more cost-effective drilling operations, resulting in the development of the Relief Well Injection Spool (RWIS). Utilizing both Trendsetter’s subsea engineering experience and Add Energy’s expert on-site advisory for blowouts and well control incidents, the two companies created a breakthrough tool for dynamic bottom kill relief well applications.
The RWIS is a device that increases the flow capacity of a single relief well. In many scenarios, this is a safer and less challenging option to drilling multiple relief wells. The RWIS sits between the relief wellhead and the BOP, and it provides inlets for multiple pumping vessels to hydraulically connect via flexible lines and inject kill fluid into the relief well (see figure). For blowouts where the kill requirements are lower, the RWIS may still provide benefits by allowing a shallower intersect that saves time and limits the spill volumes. In cases where the dynamic kill requirements drive the well design, the RWIS may provide significant savings on the casing, completion and field development.
Trendsetter utilized their expertise in designing, procurement, manufacturing and testing of complex subsea systems to conceptualize and develop the RWIS. Meanwhile, Add Energy’s Control and Blowout Support Team tapped into its extensive knowledge in multiphase dynamic flow simulations for contingency planning and helped perform many multiphase simulations.