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 stressesInfo
- 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
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.
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) |
-
1974
- 1974-10-14 IT IT2840574A patent/IT1022857B/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES418606A1 (en) | Recovery and repair of offshore pipelines | |
GB1132503A (en) | Operations in a well | |
AU587928B2 (en) | Pipe joint pressure testing means | |
ES419712A1 (en) | Method and apparatus for lining a pipe | |
GB1498804A (en) | Pipeline tool | |
GB1498803A (en) | Pipeline tool | |
FR2288264A1 (en) | Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses | |
FR2553863B1 (en) | TOOLS FOR DRILLING PRESSURE FLUID PIPES | |
IT1022857B (en) | Pressurising a pipeline during laying on seabed, etc. - to compensate for hydrostatic external pressure and pipe laying compressive stresses | |
GB1459555A (en) | Sealing the internal surfaces of pipelines | |
ES8104854A1 (en) | Improved Method and Apparatus for Drilling and Mining | |
PT77482A (en) | DEVICE AND METHOD FOR THE SEALING OF LAND WITH CONCRETE PIEU WITHOUT COATING | |
ES454357A1 (en) | Method and apparatus for connecting the ends of submerged pipes | |
GB1337540A (en) | Pipe to manhole seal | |
JPS531303A (en) | Underwater pump apparatus | |
GB1072790A (en) | Porosimeter | |
GB1164334A (en) | Process for Sealing, Strengthening or Waterproofing Objects. | |
GB990659A (en) | Improvements in double pipe lines and in methods of assembling them and of using them | |
FR2292912A1 (en) | Automatic valve for closing pipeline - has membrane subjected to hydrostatic pressure from tank | |
GB1252321A (en) | ||
SU1293359A1 (en) | Apparatus for injecting plugging composition | |
ES390886A1 (en) | Procedure and device for drilling holes in the soil with the help of a martinete. (Machine-translation by Google Translate, not legally binding) | |
GB873478A (en) | Improvements in or relating to off-shore drilling or like underwater operations | |
IT1077024B (en) | Control pipe spacer - for insertion between a borehole liner pipe and a prod. discharge pipeline | |
FR2141607A1 (en) | Workover at subsea wellheads - by wireline tool lowered in lubricator |