IT1022857B - Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses - Google Patents

Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses

Info

Publication number
IT1022857B
IT1022857B IT2840574A IT2840574A IT1022857B IT 1022857 B IT1022857 B IT 1022857B IT 2840574 A IT2840574 A IT 2840574A IT 2840574 A IT2840574 A IT 2840574A IT 1022857 B IT1022857 B IT 1022857B
Authority
IT
Italy
Prior art keywords
chamber
laying
pipeline
pressure
compressive stresses
Prior art date
Application number
IT2840574A
Other languages
Italian (it)
Original Assignee
Harold N Eagleton
Jerome D Lormand
Joe S Herring
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 Harold N Eagleton, Jerome D Lormand, Joe S Herring filed Critical Harold N Eagleton
Priority to IT2840574A priority Critical patent/IT1022857B/en
Application granted granted Critical
Publication of IT1022857B publication Critical patent/IT1022857B/en

Links

Abstract

Interior of a pipeline is placed under pressure by isolating in it a chamber selectively closed by sealed joints, introducing a fluid under pressure into this chamber to establish a predetermined pressure, enlarging the chamber at the same time as the pipeline is extended for the whole pipe construction period and maintaining the pressure inside the chamber at a predetermined level during the enlargement of the chamber continuing this for the whole pipeline construction period. Process provides a convenient way of preventing crushing of pipelines under high hydrostatic pressure e.g. when laying large diameter pipelines in deep water, as well as compensating for compressive stresses arising in the suspended part of the pipeline during laying.
IT2840574A 1974-10-14 1974-10-14 Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses IT1022857B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2840574A IT1022857B (en) 1974-10-14 1974-10-14 Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2840574A IT1022857B (en) 1974-10-14 1974-10-14 Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses

Publications (1)

Publication Number Publication Date
IT1022857B true IT1022857B (en) 1978-04-20

Family

ID=11223539

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2840574A IT1022857B (en) 1974-10-14 1974-10-14 Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses

Country Status (1)

Country Link
IT (1) IT1022857B (en)

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