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Chris Tai Devico AS Regional Manager www.devico.no 30 th Nov 2007

Directional Drilling What can Devico technology help in Tunnelling Projects For Hong Kong Tunnelling Society. Chris Tai Devico AS Regional Manager www.devico.no 30 th Nov 2007. Devico AS – The Company. Founded in 1988 by Mr. Viktor Tokle, the inventor of Devico Technologies

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Chris Tai Devico AS Regional Manager www.devico.no 30 th Nov 2007

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  1. Directional DrillingWhat can Devico technology help inTunnelling ProjectsFor Hong Kong Tunnelling Society Chris Tai Devico AS Regional Manager www.devico.no 30th Nov 2007

  2. Devico AS – The Company • Founded in 1988 by Mr. Viktor Tokle, the inventor of Devico Technologies • Norway based with branches in North America, Bulgaria and Hong Kong • All tools and equipment are made and calibrated in our own workshop in Norway • 30+ employees worldwide

  3. CEDD/GEO TGN-24 (21-Jan-05) • GEO Technical Guidance Notes 24 • Site Investigation for Tunnel Works • “3.1 Drilling of the horizontal boreholes can be carried out either from the excavation face, an intermediate shaft or from the other end of the tunnel to investigate the ground conditions, in particular to check whether suspected features of poor ground are present and if so their nature and extent.”

  4. TGN-24 • “4.1 Directional drilling techniques are now available to drill from ground level to great depth and then along a horizontal alignment. This method does not require provision of working space at the tunnel level and can be very useful in GI for deep tunnels.”

  5. Directional Drilling - Definition • The direction of drilling can be controlled • The drill hole is drilled to follow the pre-defined drill hole trajectory as close as possible • The drill hole is drilled to hit the pre-defined target

  6. Directional Drilling - Definition

  7. Directional Drilling - Definition

  8. Product

  9. Product

  10. Devico Method – A complete solution Planning Drilling Surveying

  11. Devico Method – DeviSoft Planning

  12. Devico Method – DeviDrill WL 76 Drillling

  13. DeviDrill Wireline 76 (US Patent : 6,516,900) Technical Specification • Hole : N-Size (76mm) • Core : 31.5mm / 3m length • Recommended dogleg = 9deg/30m ( R=180m ) • Max. dogleg = 12deg/30m • Onboard survey tool • Measure while drilling (MWD) • Requires no reaming out • Bluetooth communication

  14. Dogleg • A jargon in directional drilling industry • Three dimensional (3D) borehole trajectory • Expressed in terms of deg/30m • E.g. dogleg = 9 means deviated 9 degrees in 30m as a summation of both in inclination and azimuth(bearing)

  15. DeviTool Peewee • Technical Specification • Electronic Multishot System (EMS) • Weight : 2.4 kg / 5.29lb w/ batteries • Diameter : 30mm / 1.18” • Length = 975mm / 38.4” • Battery Capacity : ~40,000 measures • Internal Memory : 1,984 measures • Temperature : -15 to 75oC (5 to 167oF) • Pressure : 300bar / 4350psi • Azimuth Range : 0o-360o • Inclination Range : 0o-180o • Bluetooth communication • Accuracy :- • Inclination : 0.2o • Azimuth : 0.5o • Toolface (Gravity) : 0.2o • Toolface (Magnetic) : 1o

  16. DeviFlex • Technical Specification • Electronic Multishot System (EMS) • Weight : 20kg • Diameter : 40mm • Length = 4m • Battery Capacity : 3-4months (continues) • Internal Memory : 1,984 measures • Temperature : -15 to 75oC (5 to 167oF) • Pressure : 300bar / 4350psi • Inclination Range : 0o-180o • Bluetooth communication • Accuracy :- • Inclination : 0.2o • Azimuth : 0.01o/station • Toolface (Gravity) : 0.2o

  17. Applications • Geotechnical projects – Drill to follow the tunnel alignment to investigate the geological information • Mining industry – Multilateral borehole drilling, sidetracking • Target drilling – By pass certain area under the ground and hit the ultimate target

  18. DeviCase – Eagle’s Nest Tunnel (HKG)

  19. DeviCase – Eagle’s Nest Tunnel (HKG)

  20. DeviCase – Po Shan Road (HKG)

  21. DeviCase – New York City (USA) • Water supply tunnel in New York City • Site under Manhattan Bridge • Start angle -45 Degree to horizontal • Length 900 m • December 2002. • Operator Kinectriks

  22. DeviCase – Shinkansen (Japan) • Tunnel for Shinkansen high speed train • Length 500 meter • Deviation 20 degrees • Date Nov-Dec 2002 • Operator Nikko Exploration

  23. DeviCase – Bømlafjord (Norway) • Subsea tunnel • Length 930 m • Reduced risk • Improved QA • Resulted in redesigned tunnel allignment

  24. DeviCase – Boston(USA) • Metrowest water tunnel • Length 700 meter • Reduced risk and better bids

  25. DeviCase – Aurora / Guyana (S. America)

  26. DeviCase – Shea Creek (Canada)

  27. Thank you www.devico.no

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