Patent ID: 6868625
Filing Date: 2005-03-22
Classification: E02F

Abstract:
1. Method for moving subsea rocks and sediments along a sea floor, comprising: arranging on a movable chassis tubing which has a substantially constant cross-section between a mouth end and an ejection end, and which is flexible over at least a portion thereof, an ejector nozzle external to the tubing and connected to the tubing between the mouth end and the ejection end, a water pump which is connected to the ejector nozzle opposite to the connection to the tubing, and a power cable to supply power to the chassis from the sea surface; disposing the movable chassis with tubing, ejector nozzle pump and power cable on the sea floor; producing a pressure gradient in the tubing by pumping water from the water pump through the ejector nozzle, creating thereby suction at the mouth end of the tubing; and utilizing the suction to move rocks and sediment from a first point on the sea floor adjacent to the mouth end to a second point on the sea floor adjacent to the ejection end.