SUBMARINE PIPELINE CONSTRUCTION--3. A SEA-WORTHY SYSTEM--DESIGN AND OPERATION
Bending of the pipe during laying is preferably controlled by a geometrical criterion specifying the permissible maximum curvature, the least radius of curvature, or the maximum bending strain. To monitor bending during operations, there should be measurement and recording of the depth of stinger tip, the slope of the pipe leaving the stinger, and the net forward thrust of the pipe tension system. Excessive bending can cause residual curvature that causes the pipeline to twist first one way and then the other during move-up of the lay barge. Temperorary abandoning and recovery operations, necessary because of bad weather or for other reasons, must be conducted so as to control the sag bend by stinger adjustments and by tension on the cable without developing large bending strains in the pipe or stinger. Shallow water operations can be more hazardous to the pipe than deep water. Future development of the lay barge method to extend the water depth capability and to improve rough weather capability and economics are discussed.
- See also MRIS #056180, API #19-504165.
Petroleum Engineer Publishing CompanyBox 1589
Dallas, TX United States 75221
- Broussard, D E
- Visser, R C
- Publication Date: 1972-3
- Pagination: 3 p.
- Pipeline and Gas Journal
- Volume: 199
- Issue Number: 3
- Publisher: Petroleum Engineer Publishing Company
- TRT Terms: Construction; Pipe; Pipe laying; Pipelines; Stresses; Underwater pipelines
- Old TRIS Terms: Pipe stresses; Pipeline construction
- Subject Areas: Construction; Marine Transportation; Pipelines; Terminals and Facilities;
- Accession Number: 00056181
- Record Type: Publication
- Source Agency: American Petroleum Institute
- Files: TRIS
- Created Date: Jul 15 1974 12:00AM