Directional Drilling Overview Directional Drilling is the term used to describe the drilling and steering of a borehole along a planned route, in order to reach a pre-determined target location. View Brochure About Brochures To download a Brochure, right-click on the View-Brochure link, then select Save Target As... DMS Products and Services DMS offer a number of systems and sensors specifically designed to meet the demands of the borehole survey and drilling environments of today. View Brochure About Brochures To download a Brochure, right-click on the View-Brochure link, then select Save Target As...