Model test investigation on an innovative lifting system for deepwater riser installation  

作　　者：Mao Dongfeng Duan Menglan Wang Yi He Ning Chen Bangmin Zhang Yingjie 

机构地区：[1]School of Mechanical Engineering, Yangtze University, Jinzhou Hubei 434023, China [2]Offshore Oil/Gas Research Center, China University of Petroleum, Beijing 102249, China [3]Department of Naval Architecture ＆ Ocean Engineering, Dalian University of Technology, Dalian, Liaoning 116023, China [4]Offshore Oil Engineering Co., Ltd., Tanggu, Tianjin 300452, China

出　　处：《Petroleum Science》2010年第4期547-554,共8页石油科学（英文版）

基　　金：support from the National Natural Science Foundation of China (granted number 50979113);the National 863 Program of China (granted number 2006AA09A105)

摘　　要：An S-lay crane barge,named CNOOC 201,has been built for pipe laying in deepwater oil/gas fields in the South China Sea.It is due to be commissioned by the end of the year 2010.A special lifting system is developed to meet the challenge that installing deepwater risers from an S-lay barge is difficult and has not been achieved.The purpose of this paper was to investigate the model test on such an innovative system,which has to be done before field application.By applying the similarity theory,the movement of the S-lay barge is simulated through a six degrees-of-freedom motion platform,and a truncated model riser is utilized for the model testing.The displacement and force boundary conditions at the truncated position of the riser are obtained from the catenary governing equation and become realized by a slideway cart and a loading system designed to control the configuration of the model riser,which presents a similar configuration to a real riser in deepwater.The test results are in very good agreement with theoretical calculations,showing that the active truncated test is applicable for controlling the configuration of the deepwater riser in model testing investigation.An S-lay crane barge,named CNOOC 201,has been built for pipe laying in deepwater oil/gas fields in the South China Sea.It is due to be commissioned by the end of the year 2010.A special lifting system is developed to meet the challenge that installing deepwater risers from an S-lay barge is difficult and has not been achieved.The purpose of this paper was to investigate the model test on such an innovative system,which has to be done before field application.By applying the similarity theory,the movement of the S-lay barge is simulated through a six degrees-of-freedom motion platform,and a truncated model riser is utilized for the model testing.The displacement and force boundary conditions at the truncated position of the riser are obtained from the catenary governing equation and become realized by a slideway cart and a loading system designed to control the configuration of the model riser,which presents a similar configuration to a real riser in deepwater.The test results are in very good agreement with theoretical calculations,showing that the active truncated test is applicable for controlling the configuration of the deepwater riser in model testing investigation.

关 键 词：Deepwater riser lifting system model test six degrees-of-freedom motion platform active truncation 

分 类 号：TP87[自动化与计算机技术—检测技术与自动化装置] TE242.9[自动化与计算机技术—控制科学与工程]