Performance evaluation of novel emplacement device

The one of key devices in DBD (Deep borehole disposal) operations is the joint device between a disposal canister and emplacement rig. J-slot joint is well known device for this purpose, and has been used in oil & gas industry. But J-slot joint can be connected only to drill pipe, and the recombining is impossible after disconnecting. In this study, a new joint concept was suggested to overcome the problems of the existing joint device for DBD process. New joint device can be applied to various emplacement rigs such as drill pipe, wireline, coiled tubing, and etc. And it also makes the emplacement rig to be connected or disconnected to the disposal canister only by the mechanical operations. For demonstration of the new joint concept, a joint device, a twin canister string, and a test water tube were manufactured through the detailed designs of them in 1/3 scale. And the deployment mud was prepared in two forms of Ca-type and Na-type bentonite. The novel joint device was designed for the emplacement and retrieval of a disposal canister in DBD process. And the novel device showed good performance in the simulation test.