The drilling technology has been used for over 50,000 boreholes drilled by the resource extraction industry in the US during the past two decades. This is a well-developed technology and has become a low-cost commodity.
The Deep Isolation solution was also successfully tested at a commercial drilling facility where a prototype canister was successfully lowered 2200 ft. (670 meters) into an existing drillhole using a wireline cable and then pushed over 400 ft. (122 meters) using an underground “tractor” into a long horizontal storage section. The canister was released and the tractor and cable withdrawn. Several hours later, the tractor was placed back in the hole, where it latched and retrieved the canister, bringing it back to the surface.