search Mobile: 070-370 18 59 Phone: 026-54 45 00 Fax: 026-54 45 25 Home News Business concept Methods Example Technical data Contact Us Available positions SBR Drilling Controlled drilling Hammer drilling Earth rocket - basic food Methods for controlled horizontal drilling Shaft-free methods, controlled horizontal drilling and SBR drilling, provide completely new possibilities. Where you were previously forced to dig, you can now use drilling that is in many ways gentle on the environment, smooth and cost-effective. The methods mean that you can control the drill from the ground by obtaining information about the position of the guide stage and the depth, position and inclination of the drill head from a radio probe. You start by doing a pilot drill that is guided to the target. When the drill head has reached the ground surface at the target, a so-called reamer is attached which is pulled back through the hole and at the same time the installation is put in place. Advantages of the shaft-free methods: requires no plumbing means no cost for management bed no subsidence due to relocated soil masses no impact on groundwater the traffic flows without blocked streets or car plates housing and shops are not disturbed intact asphalt requires no overlay minimal restoration cost The shaft-free methods are used in: Cable only Protective pipes for electricity, telecommunications or opto-cable District heating and district cooling Pressure drain Pressurized water Sewer (of course) Stormwater (of course) Media pipes for gas Controlled horizontal drilling Controlled horizontal drilling uses mainly sand and clay. Geotechnical investigation of soil type, shear strength and groundwater is required. Involves only a small starting and receiving pit. Pipe length: 0-300 m Diameter: 40-500 mm Material: plastic and steel. SBR drilling Den stora skillnaden mellan vanlig styrd horisontell borrning och SBR-borrning är framför allt att borrstängerna är dubbla, en inre och en yttre stång. Därmed kan SBR-borrning tillämpas där marken innehåller mycket hårda friktionsmaterial eller porösare bergarter men också mark med stora mängder stenar. Tack vare SBR-borrning är det möjligt att genomföra styrd borrning i mjuka eller mediumhårda solida bergarter vilket tidigare bara varit effektivt med stora och kostsamma maskiner. Används i friktionsmaterial och lera, stenhaltig eller hård mark samt berg. Geoteknisk undersökning av jordart, skjuvhållfasthet och grundvatten krävs. Innebär bara en mindre start- och mottagningsgrop men ingen tryckgrop. Rörlängd: 0-150 m Diameter: 100-250 mm Material: plast och stål. For further method description see technical data Video - This is how we work All rights reserved © 2016 Nordic Drilling System Write to us Nordic Drilling System AB Atlasgatan 1, 802 86 Gävle Contact us Phone: 026-54 45 00 E-mail: info@nds.se The website is produced by Precis Reklam AB and Dreamscape Interactive