FR2264924A1 - Method of placing sea bed conduits - involves tensioning conduits and using floatation-ballast units - Google Patents

Method of placing sea bed conduits - involves tensioning conduits and using floatation-ballast units

Info

Publication number
FR2264924A1
FR2264924A1 FR7409238A FR7409238A FR2264924A1 FR 2264924 A1 FR2264924 A1 FR 2264924A1 FR 7409238 A FR7409238 A FR 7409238A FR 7409238 A FR7409238 A FR 7409238A FR 2264924 A1 FR2264924 A1 FR 2264924A1
Authority
FR
France
Prior art keywords
conduits
floatation
conduit
ballast units
sea bed
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.)
Granted
Application number
FR7409238A
Other languages
French (fr)
Other versions
FR2264924B1 (en
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.)
DUYSTER TJERK
Original Assignee
DUYSTER TJERK
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 DUYSTER TJERK filed Critical DUYSTER TJERK
Priority to FR7409238A priority Critical patent/FR2264924A1/en
Publication of FR2264924A1 publication Critical patent/FR2264924A1/en
Application granted granted Critical
Publication of FR2264924B1 publication Critical patent/FR2264924B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/16—Laying or reclaiming pipes on or under water on the bottom
    • F16L1/163—Laying or reclaiming pipes on or under water on the bottom by varying the apparent weight of the pipe during the laying operation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/24—Floats; Weights

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The method of transporting and placing long conduits underwater e.g. on sea bed, alleviates the dependency of the towing operation on calm seas, and entails the towing of tensioned submerged lengths with controllable air-water floatation-ballast units maintaining the conduit at the desired station beneath surface water level. Tension is applied by long calbes terminally supported by tugs the greater tractive force being applied by the leading tug to achieve the desired displacement. Floatation-ballast units attach to the conduit at intervals of several hundred metres and conduit depth is maintained by suspension cables from subsidiary tugs. Swell compensators act with each suspension cable.
FR7409238A 1974-03-19 1974-03-19 Method of placing sea bed conduits - involves tensioning conduits and using floatation-ballast units Granted FR2264924A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7409238A FR2264924A1 (en) 1974-03-19 1974-03-19 Method of placing sea bed conduits - involves tensioning conduits and using floatation-ballast units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7409238A FR2264924A1 (en) 1974-03-19 1974-03-19 Method of placing sea bed conduits - involves tensioning conduits and using floatation-ballast units

Publications (2)

Publication Number Publication Date
FR2264924A1 true FR2264924A1 (en) 1975-10-17
FR2264924B1 FR2264924B1 (en) 1978-03-31

Family

ID=9136515

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7409238A Granted FR2264924A1 (en) 1974-03-19 1974-03-19 Method of placing sea bed conduits - involves tensioning conduits and using floatation-ballast units

Country Status (1)

Country Link
FR (1) FR2264924A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2388716A1 (en) * 1977-04-28 1978-11-24 Shibata Ind Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2388716A1 (en) * 1977-04-28 1978-11-24 Shibata Ind Co Ltd

Also Published As

Publication number Publication date
FR2264924B1 (en) 1978-03-31

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Legal Events

Date Code Title Description
ST Notification of lapse