EP1167637A3 - Trenching apparatus - Google Patents

Trenching apparatus Download PDF

Info

Publication number
EP1167637A3
EP1167637A3 EP01305068A EP01305068A EP1167637A3 EP 1167637 A3 EP1167637 A3 EP 1167637A3 EP 01305068 A EP01305068 A EP 01305068A EP 01305068 A EP01305068 A EP 01305068A EP 1167637 A3 EP1167637 A3 EP 1167637A3
Authority
EP
European Patent Office
Prior art keywords
units
seabed
fluidisation
cables
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01305068A
Other languages
German (de)
French (fr)
Other versions
EP1167637A2 (en
Inventor
Erik Gloppen
Gosta Nilsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordic Offshore AS
Framo Flatoy AS
Original Assignee
Nordic Offshore AS
Frank Mohn Flatoy AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nordic Offshore AS, Frank Mohn Flatoy AS filed Critical Nordic Offshore AS
Publication of EP1167637A2 publication Critical patent/EP1167637A2/en
Publication of EP1167637A3 publication Critical patent/EP1167637A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9206—Digging devices using blowing effect only, like jets or propellers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
    • E02F5/107—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water using blowing-effect devices, e.g. jets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

A trenching unit (12) used to cut trenches in the seabed for laying pipelines or cables.
The unit comprises: a jetting arm (3) with a plurality of sections, each section having at least one nozzle; means for supplying fluid to nozzles (8) in at least two sections; and means (4) for separately controlling the flow characteristics of the fluid supplied to each individual section of the jetting arm.
Two or more units of such apparatus can be used in tandem to extend the fluidisation period of a localised area of the seabed. This is particularly useful when pipes or cables are relatively stiff. The fluidisation period depends upon the distance between the units which is calculated as a function of the characteristics of the seabed and the capabilities of the individual units.
The distance between the units is determined by the length of an adjustable linkage.
EP01305068A 2000-06-12 2001-06-11 Trenching apparatus Withdrawn EP1167637A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0014348A GB2363407A (en) 2000-06-12 2000-06-12 Trenching apparatus
GB0014348 2000-06-12

Publications (2)

Publication Number Publication Date
EP1167637A2 EP1167637A2 (en) 2002-01-02
EP1167637A3 true EP1167637A3 (en) 2002-05-15

Family

ID=9893497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01305068A Withdrawn EP1167637A3 (en) 2000-06-12 2001-06-11 Trenching apparatus

Country Status (4)

Country Link
US (1) US20020017041A1 (en)
EP (1) EP1167637A3 (en)
GB (1) GB2363407A (en)
NO (1) NO20012823L (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0022002D0 (en) 2000-09-07 2000-10-25 Global Marine Systems Ltd Method and apparatus for accessing underwater cables or pipes
DK175610B1 (en) * 2003-02-28 2004-12-27 Alcatel Submarine Networks Mar Coil tool comprising a hook with trigger mechanism
GB2438405A (en) * 2006-05-22 2007-11-28 Nicholas Victor Sills Underwater trenching and excavation apparatus
GB201122117D0 (en) * 2011-12-22 2012-02-01 Ihc Engineering Business Ltd Pump apparatus
DE102014205445A1 (en) * 2014-03-24 2015-09-24 Robert Bosch Gmbh circular saw blade
GB201513484D0 (en) * 2015-07-30 2015-09-16 Ihc Engineering Business Ltd Underwater trenching apparatus and pumping apparatus
CN105220726A (en) * 2015-10-16 2016-01-06 上海交通大学 Native device is broken through in the controlled spray of flow
CN110029696B (en) * 2019-04-08 2024-02-20 国网浙江省电力有限公司舟山供电公司 Double-operation-mode submarine cable trencher
EP3800297A1 (en) 2019-10-02 2021-04-07 Soil Machine Dynamics Limited Method and apparatus for inserting an elongate object into a trench in a sea floor
EP3832026B1 (en) * 2019-12-05 2023-07-26 Soil Machine Dynamics Limited Apparatus for locating elongate object in a trench in a floor of a body of water
EP4432495A2 (en) * 2021-06-28 2024-09-18 Soil Machine Dynamics Limited Apparatus for inserting an elongate object into a trench

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659425A (en) * 1969-05-23 1972-05-02 Shell Oil Co Method and apparatus for burying pipeline
US3673808A (en) * 1969-04-10 1972-07-04 Nederlandse Offshore Co Method of and apparatus for burying sub-sea pipelines,cables and the like
GB1379147A (en) * 1972-02-22 1975-01-02 Brown & Root Apparatus for entrenching submerged elongate structures
WO1980002169A1 (en) * 1979-04-06 1980-10-16 M Prestegarden Arrangement for burying a line in the sea bed
GB2075085A (en) * 1980-04-24 1981-11-11 Hoad Design & Eng Ltd Apparatus for cutting trenches
US4330225A (en) * 1979-09-24 1982-05-18 Santa Fe International Corporation System for entrenching submerged elongated structures
JPS57137531A (en) * 1981-02-20 1982-08-25 Kokusai Denshin Denwa Co Ltd <Kdd> Excavating method and device for ditch in bottom of water
JPS5820839A (en) * 1981-07-31 1983-02-07 Sumitomo Electric Ind Ltd Seabed cable layer
JPS5865824A (en) * 1981-10-14 1983-04-19 Sumitomo Electric Ind Ltd Excavator for seabed
WO1995028529A1 (en) * 1994-04-15 1995-10-26 Van Oord Acz B.V. Apparatus for burying an elongated article underwater

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1138764B (en) * 1981-05-04 1986-09-17 Snam Progetti UNDERGROUND DEVICE FOR UNDERGROUND OR UNDERGROUND
US4516880A (en) * 1982-04-19 1985-05-14 Martin Charles F Underwater trenching apparatus
GB2247261A (en) * 1990-08-20 1992-02-26 British Gas Plc Method and tool for seabed excavation
GB2252776B (en) * 1991-02-14 1995-04-12 British Gas Plc Formation of a cavity in ground

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673808A (en) * 1969-04-10 1972-07-04 Nederlandse Offshore Co Method of and apparatus for burying sub-sea pipelines,cables and the like
US3659425A (en) * 1969-05-23 1972-05-02 Shell Oil Co Method and apparatus for burying pipeline
GB1379147A (en) * 1972-02-22 1975-01-02 Brown & Root Apparatus for entrenching submerged elongate structures
WO1980002169A1 (en) * 1979-04-06 1980-10-16 M Prestegarden Arrangement for burying a line in the sea bed
US4330225A (en) * 1979-09-24 1982-05-18 Santa Fe International Corporation System for entrenching submerged elongated structures
GB2075085A (en) * 1980-04-24 1981-11-11 Hoad Design & Eng Ltd Apparatus for cutting trenches
JPS57137531A (en) * 1981-02-20 1982-08-25 Kokusai Denshin Denwa Co Ltd <Kdd> Excavating method and device for ditch in bottom of water
JPS5820839A (en) * 1981-07-31 1983-02-07 Sumitomo Electric Ind Ltd Seabed cable layer
JPS5865824A (en) * 1981-10-14 1983-04-19 Sumitomo Electric Ind Ltd Excavator for seabed
WO1995028529A1 (en) * 1994-04-15 1995-10-26 Van Oord Acz B.V. Apparatus for burying an elongated article underwater

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 240 (M - 174) 27 November 1982 (1982-11-27) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 098 (M - 210) 26 April 1983 (1983-04-26) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 159 (M - 228) 13 July 1983 (1983-07-13) *

Also Published As

Publication number Publication date
GB2363407A (en) 2001-12-19
US20020017041A1 (en) 2002-02-14
NO20012823L (en) 2001-12-13
GB0014348D0 (en) 2000-08-02
NO20012823D0 (en) 2001-06-08
EP1167637A2 (en) 2002-01-02

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