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Paper Information

Title: 

WALL THICKNESS OPTIMIZATION FOR ULTRA-DEEPWATER PIPELINE SYSTEM

Type: PAPER
Author(s): KASHANI MANOUCHEHR*
 
 *OPE INC.
 
Name of Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Type of Seminar:  CONFERENCE
Sponsor:  PORTS AND MARITIME ORGANIZATION
Date:  2008Volume 8
 
 
Abstract: 

INTRODUCTION RECENT ADVANCES IN PIPE MANUFACTURING TECHNIQUES AND PIPELINE CONSTRUCTION HAVE ENABLED THE INSTALLATION OF LARGER DIAMETER PIPELINES IN ULTRA-DEEPWATER LOCATIONS (WATER DEPTHS GREATER THAN 1, 500 METER). RESULTS OF RECENT WORK HAVE DEMONSTRATED THE BENEFICIAL EFFECT OF A MODIFIED UOE (U BENDING, O FORMING, EXPANSION E) MANUFACTURING APPROACH ON LINEPIPE COLLAPSE RESISTANCE (KASHANI 2008). THROUGH THE MODIFIED UOE FABRICATION PROCESS, IN COMBINATION WITH LOW HEAT TREATMENT PROCESS SIGNIFICANT IMPROVEMENTS IN COLLAPSE RESISTANCE IS OBTAINED.
THE USE OF MODIFIED FORMING PARAMETERS AND HEAT TREATMENT DURING PIPE MANUFACTURE MAY ENABLE TO INCREASE THE COLLAPSE REDUCTION FACTOR GIVEN BY THE OFFSHORE CODES. THE ENHANCED FABRICATION PARAMETERS HOWEVER ARE NOT CONSIDERED IN THE PRESENT WORK BUT HAVE ONLY BEEN IDENTIFIED AS ADDITIONAL CONTROLLING PARAMETERS IN ULTRA-DEEPWATER PIPELINE SIZING.

 
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