Directional Drilling core barrel from Devico AS

The DeviDrill is a steerable wireline core barrel. The design of the N-size tool was introduced in 2001. Today it is successfully applied in various projects all over the world, from geotechnical investigations to the mining industry.

The DeviDrill reduces the cost of exploration drilling programs by hitting targets quicker and more accurately than with traditional core drilling methods. By making multiple branches from a mother-hole it dramatically reduces both the time spent and the cost, and, in addition, you get the geological information from wherever you want. No time is lost on moving the drill rig, drilling through the overburden, and drilling further down to where you almost were with your previous hole.

The DeviDrill uses a normal drill string and is fully compatible with the NQ wireline system. There is no need for additional water pumps, drill strings, or survey instruments. Devico’s survey tools are a fully integrated part of the tool, as they stay on board and measure while drilling.

Coring during steering provides a complete record of the geology. It leaves nothing in the hole - except a bend. The curvature or dogleg can be adjusted from completely straight to more than 20 deg/30 meters. However, the recommended curvature from the drill rod manufacturer is 9 deg/30 meters, as any greater deviations will result in extensive wear on the drill rods.

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