公开(公告)号：EP1305478A2

公开(公告)日：2003-05-02

申请号：EP00973273.6

申请日：2000-10-30

申请人： GTO Subsea AS

发明人： FAGERVOLD, Terje ,  FAGERVOLD, Gunnar ,  KVALVAG, Gustav ,  JACOBSEN, Tom

IPC分类号： E02F3/88

CPC分类号： B63C11/52 ,  E02B3/023 ,  E02F3/92 ,  E02F5/28 ,  Y02A10/28 ,  Y02A10/383

摘要： A method for moving subsea rocks and sediments which can be at significant depths, in connection with removal of protective rocks around installations where maintenance is to be conducted. Tubing with an ejector nozzle is arranged completely externally in relation to the tubing on a standard, remote controlled submarine (ROV), so that the ejector nozzle produces a pressure gradient through the tubing. An inlet end of the tubing is located with the rocks and sediments to be moved, which are sucked into the tubing and blown out of the opposite end of the tubing.

公开(公告)号：EP1278916A1

公开(公告)日：2003-01-29

申请号：EP01924008.4

申请日：2001-04-04

申请人： GTO Subsea AS

发明人： JACOBSEN, Tom ,  FAGERVOLD, Terje ,  FAGERVOLD, Gunnar ,  KVALVAG, Gustav

IPC分类号： E02F3/88

CPC分类号： E02F3/9293 ,  E02F3/8858 ,  E02F3/905

摘要： Method and device for moving subsea rocks and sediments, also at significant depths, e.g. in connection with removal of protective rocks around subsea installations, where maintenance is to be conducted. The device comprises a rigid or at least partly flexible tubing (5) thorough which the masses (14) may be transported with the aid of a pressure gradient produced by an ejector nozzle (11) arranged externally in relation to said tubing. The nozzle (11) is fed with water from a water pump (12). The device further comprises a chassis (F) adapted to be transported along the (sea) bottom. The required power is arranged to be supplied through a cable (3) from the surface, while the tubing (5) preferably is arranged to be remotely controlled by a manipulator (9, 9').