Title :
Directionally drilled bores for remote cable landings
Author :
Sinclair, N.A. ; Thomson, H.G. ; Black, S.A. ; Roberts, R.
Author_Institution :
Naval Facilities Eng. Service Center, Port Hueneme, CA, USA
Abstract :
A cable shore landing protection system was needed at Southwest Bay, Ascension Island, to protect future cables coming ashore. Three subsurface conduits were installed from the shore out under the seafloor, using a lightweight horizontal drill rig. These three directionally drilled boreholes range from 500 to 800 feet in length, and exit the seafloor at water depths of 35 feet or greater. These boreholes were installed in late August and early September of 2002. This effort took 13 days on site to accomplish.
Keywords :
cable laying; drilling; oceanographic techniques; remote sensing; submarine cables; 35 feet; 500 to 800 feet; AD 2002 08 to 09; Ascension Island; Southwest Bay; cable shore landing protection system; directionally drilled boreholes; lightweight horizontal drill rig; remote cable landings; seafloor; subsurface conduits; Acoustical engineering; Boring; Communication cables; Costs; Delay estimation; Drilling; Oceans; Protection; Sea floor; Underwater cables;
Conference_Titel :
OCEANS 2003. Proceedings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-933957-30-0
DOI :
10.1109/OCEANS.2003.178519
