Ocean Engineering Equipment and Technology ›› 2015, Vol. 2 ›› Issue (3): 168-174.

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Study on Repair Methods for Deepwater Pipeline

Chao MA, Kun SUN, Ye-zhou HUANG, Xiao-dong CHEN, Shou-yang SUN   

  1. COOEC Subsea Technology Co., Ltd., Shenzhen, Guangdong 518067, China
  • Received:2015-05-22 Online:2015-06-10 Published:2016-01-21


The special environment conditions of oil and gas fields near Liwan 3-1 are introduced with their adverse effects on pipelines, and three damage scenarios of deepwater pipeline for repairing damaged pipeline are listed. According to the damage scenarios, methods for repairing damaged pipeline in deep water are summarized with repair procedure and equipment, and those methods are compared. Finally, the application possibility of all methods for pipeline repair in deepwater field is analyzed. It is concluded that repair with bolted clamp or connector can be main repair methods for deepwater pipelines in China.

Key words: deepwater pipeline, damage scenarios of pipeline, pipeline repair, repair procedure

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