Article(id=1324392763105615884, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1324392762614882315, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2026.07.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1766073600000, receivedDateStr=2025-12-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793689440751, onlineDateStr=2026-11-03, pubDate=1784044800000, pubDateStr=2026-07-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793689440751, onlineIssueDateStr=2026-11-03, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793689440751, creator=13701087609, updateTime=1793689440751, updator=13701087609, issue=Issue{id=1324392762614882315, tenantId=1146029695717560320, journalId=1240685776644648972, year='2026', volume='30', issue='7', pageStart='1041', pageEnd='1220', issueExtLink='null', onlineDate='null', pubDate='1784044800000', pubDateStr='2026-07-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793689440634, creator='13701087609', updateTime=1793689440634, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=1106, endPage=1120, ext={EN=ArticleExt(id=1324392763327913997, articleId=1324392763105615884, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Feasibility study and system design of dual offloading for cylindrical FPSO under complex marine conditions, columnId=1241023037940748650, journalTitle=Journal of Ship Mechanics, columnName=Hydrodynamics, runingTitle=null, highlight=null, articleAbstract=

Due to its cylindrical configuration and distinctive motion characteristics, the cylindrical FPSO faces significant challenges in offloading operations under complex marine conditions characterized by high-frequency variations in wind, waves, and currents. To address these challenges, particularly under the persistent northeastern and southwestern monsoon conditions in the eastern South China Sea, this study proposes a novel offloading system featuring dual offloading points, bow loading, and position-mooring configuration, intended as a cost-effective alternative to high-cost DP shuttle tankers. The proposed solution integrates a bow thruster on the shuttle tanker and dual stern tugs to enable coordinated control of heading and position, thereby enhancing operational safety and adaptability. To verify the feasibility of the proposed system, a combination of numerical simulations and full-mission maneuvering experiments was conducted. The study systematically investigates key technical aspects such as the selection of shuttle tankers and tugs, bow thruster configuration, and mooring hawser design. Results confirm the feasibility of employing a 75 000 DWT shuttle tanker for position-mooring offloading at the Liuhua oilfield in the South China Sea. Findings indicate a positive correlation between the tension and angle of mooring hawsers and the shuttle tanker's displacement and length. This study provides technical guidance and risk assessment insights for cost-effective offloading operations of cylindrical FPSOs in complex marine environments.

, authors=Xiu-long XIE1, 2, Hong-jun ZHU1, Zheng ZHANG1, authorsList=Xiu-long XIE, Hong-jun ZHU, Zheng ZHANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Ship Mechanics. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1324392776862933116, articleId=1324392763105615884, tenantId=1146029695717560320, journalId=1240685776644648972, language=CN, title=面向复杂海况的圆筒型FPSO双外输系统设计与作业可行性研究, columnId=1241023038087549292, journalTitle=船舶力学, columnName=流体力学, runingTitle=null, highlight=null, articleAbstract=

圆筒型FPSO因其筒体构型和特殊运动机理,在高频变换风浪流复杂海况环境下的外输作业面临显著挑战。为解决这一问题,针对南海东部海域常年东北季风和西南季风环境条件,本研究提出一种“双外输点+艏装载+限位系泊”的新型外输系统方案,旨在替代造价高昂的DP穿梭油轮方式。方案通过在穿梭油轮艏部加装侧推装置,艉部设置双拖轮,实现方向与位置的协同控制,提升作业安全性与适应性。为验证外输方案可行性,采用数值分析与全任务模拟实验相结合的方法,系统研究了穿梭油轮、拖轮选型,以及穿梭油轮艏侧推设计和系泊大缆设计选型等关键技术要点,验证了在中国南海流花油田采用75 000吨穿梭油轮进行限位外输的可行性。研究发现,在流花海域环境条件下,外输系泊大缆的张力、夹角等与船舶吨位及船长成正相关性。本文研究成果可为圆筒型FPSO在复杂海况区域的低成本外输作业提供技术支持与风险预判依据。

, authors=谢修龙1, 2, 朱红钧1, 张政1, authorsList=谢修龙, 朱红钧, 张政, authorCompany=null, correspAuthors=null, authorNote=

谢修龙(1988–),男,硕士,副教授级工程师

朱红钧(1983–),男,博士,教授,通讯作者,E-mail:

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articleId=1324392763105615884, language=CN, label=图7, caption=系泊大缆夹角时程曲线, figureFileSmall=O9DH7rnZ4V+x68LYPRN8PA==, figureFileBig=NP1lUlVrAGOUtdNdKYhlvQ==, tableContent=null), ArticleFig(id=1324392781325672618, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Fig.8, caption=Simulation equipment control center and bridge, figureFileSmall=z5rV+nUJd4ANVdBYqg3qEQ==, figureFileBig=8IVik0gsAsuiqmtUnZr0RQ==, tableContent=null), ArticleFig(id=1324392781409558699, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=图8, caption=模拟设备控制中心及驾驶台, figureFileSmall=z5rV+nUJd4ANVdBYqg3qEQ==, figureFileBig=8IVik0gsAsuiqmtUnZr0RQ==, tableContent=null), ArticleFig(id=1324392781501833388, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Fig.9, caption=Schematic of the northeast offloading point at berth, figureFileSmall=QF7OFpkxXehc4EJy/eZaYw==, figureFileBig=uGreyZTMoIHQ0EsecqfBcw==, tableContent=null), ArticleFig(id=1324392781615079597, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=图9, caption=东北外输点在泊示意图, figureFileSmall=QF7OFpkxXehc4EJy/eZaYw==, figureFileBig=uGreyZTMoIHQ0EsecqfBcw==, tableContent=null), ArticleFig(id=1324392781682188462, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Fig.10, caption=Time history curves of mooring lines tension, figureFileSmall=our1xY+m73NuLqVeSEs4/A==, figureFileBig=k0NqXc4RE33xTl3FVJwSmQ==, tableContent=null), ArticleFig(id=1324392781770268847, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=图10, caption=系泊大缆张力时历曲线, figureFileSmall=our1xY+m73NuLqVeSEs4/A==, figureFileBig=k0NqXc4RE33xTl3FVJwSmQ==, tableContent=null), ArticleFig(id=1324392781841572016, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Fig.11, caption=Comparison of simulation results for T-3/S4~S6, figureFileSmall=4A7rcu8CGKZ83525XGC1vg==, figureFileBig=GhBfUQyDWhxzYTzaTI+PEQ==, tableContent=null), ArticleFig(id=1324392781921263793, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=图11, caption=T-3/S4~S6模拟实验结果对比图, figureFileSmall=4A7rcu8CGKZ83525XGC1vg==, figureFileBig=GhBfUQyDWhxzYTzaTI+PEQ==, tableContent=null), ArticleFig(id=1324392782009344178, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.1, caption=

Design parameters of the cylindrical FPSO

, figureFileSmall=null, figureFileBig=null, tableContent=
名称/单位数值名称/单位数值
直径 /m72压载排水量 /t79 800
满载吃水 /m22.8满载系泊点高度 /m10.2
满载排水量 /t101 000压载系泊点高度 /m16.5
压载吃水 /m16.5
), ArticleFig(id=1324392782110007475, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表1, caption=

圆筒型FPSO设计参数

, figureFileSmall=null, figureFileBig=null, tableContent=
名称/单位数值名称/单位数值
直径 /m72压载排水量 /t79 800
满载吃水 /m22.8满载系泊点高度 /m10.2
满载排水量 /t101 000压载系泊点高度 /m16.5
压载吃水 /m16.5
), ArticleFig(id=1324392782172922036, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.2, caption=

Design parameters of shuttle tank’s bow thruster and tug boat

, figureFileSmall=null, figureFileBig=null, tableContent=
名称/单位单艉拖双艉拖
艏侧推推力 /kN≥294≥294
拖轮A拉力 /kN≥785主拖轮≥1370,辅拖轮≥490
拖轮B拉力 /kN≥686≥686
), ArticleFig(id=1324392782248419509, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表2, caption=

穿梭油轮艏侧推及拖轮设计参数

, figureFileSmall=null, figureFileBig=null, tableContent=
名称/单位单艉拖双艉拖
艏侧推推力 /kN≥294≥294
拖轮A拉力 /kN≥785主拖轮≥1370,辅拖轮≥490
拖轮B拉力 /kN≥686≥686
), ArticleFig(id=1324392782307139766, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.3, caption=

The correspondence between chain stopper SWL and shuttle tanker DWT

, figureFileSmall=null, figureFileBig=null, tableContent=
止链器数量/个止链器 SWL/kN穿梭油轮 DWT/t
11960DWT≤10万
2245010万≤DWT≤15万
23430DWT≥15万
), ArticleFig(id=1324392782374248631, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表3, caption=

止链器SWL与穿梭油轮DWT的对应关系

, figureFileSmall=null, figureFileBig=null, tableContent=
止链器数量/个止链器 SWL/kN穿梭油轮 DWT/t
11960DWT≤10万
2245010万≤DWT≤15万
23430DWT≥15万
), ArticleFig(id=1324392782449746104, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.4, caption=

Design parameters of the mooring hawser and tug towlines

, figureFileSmall=null, figureFileBig=null, tableContent=
名称/单位系泊大缆拖缆
长度 /m100260
直径 /mm164128
SWL /kN1960−
MBL /kN6370−
), ArticleFig(id=1324392782525243577, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表4, caption=

系泊大缆和拖轮拖缆设计参数

, figureFileSmall=null, figureFileBig=null, tableContent=
名称/单位系泊大缆拖缆
长度 /m100260
直径 /mm164128
SWL /kN1960−
MBL /kN6370−
), ArticleFig(id=1324392782592352442, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.5, caption=

Calculation parameters of double stern tow dynamic analysis

, figureFileSmall=null, figureFileBig=null, tableContent=
名称参数
圆筒型FPSO直径72 m,满载吃水22.8 m
穿梭油轮总长228.6 m、宽32.26 m,结构吃水14.7 m
拖轮主拖为HYSY673,系柱拖力1630 kN;辅拖轮为NH221,系柱拖力765 kN
拖带角度−50°≤$ {\theta }_{{\mathrm{A}}} $≤70°,−70°≤$ {\theta }_{{\mathrm{B}}} $≤50°
), ArticleFig(id=1324392782655267003, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表5, caption=

双艉拖动态分析计算参数

, figureFileSmall=null, figureFileBig=null, tableContent=
名称参数
圆筒型FPSO直径72 m,满载吃水22.8 m
穿梭油轮总长228.6 m、宽32.26 m,结构吃水14.7 m
拖轮主拖为HYSY673,系柱拖力1630 kN;辅拖轮为NH221,系柱拖力765 kN
拖带角度−50°≤$ {\theta }_{{\mathrm{A}}} $≤70°,−70°≤$ {\theta }_{{\mathrm{B}}} $≤50°
), ArticleFig(id=1324392782726570172, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.6, caption=

Key parameters of the numerical model

, figureFileSmall=null, figureFileBig=null, tableContent=
分类/单位场景1场景2分类/单位场景1场景2
艏向θH /°−60−30拖带角θA /°45~6040~55
环境载荷入射角θE /°90135拖带角θB /°15~3010~25
系泊大缆张力FL /kN980980系泊大缆角度θC /°3522.9
), ArticleFig(id=1324392782781096125, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表6, caption=

数值模型关键参数设定

, figureFileSmall=null, figureFileBig=null, tableContent=
分类/单位场景1场景2分类/单位场景1场景2
艏向θH /°−60−30拖带角θA /°45~6040~55
环境载荷入射角θE /°90135拖带角θB /°15~3010~25
系泊大缆张力FL /kN980980系泊大缆角度θC /°3522.9
), ArticleFig(id=1324392782844010686, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.7, caption=

Simulated conditions

, figureFileSmall=null, figureFileBig=null, tableContent=
参数/单位工况A工况B工况C工况D工况E工况F工况G工况H
风速VW /(m·s−1)8.28.2008.28.200
风向θW /°90135901359013590135
浪高HS /m1.71.71.71.71.71.71.71.7
海浪周期TP /s77777777
海水流速VS /(m·s−1)000.510.51000.510.51
拖带角θA /°5244464048426053
拖带角θB /°2214161018123023
压载状态 /−半载半载半载半载满载满载满载满载
), ArticleFig(id=1324392782906925247, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表7, caption=

模拟工况设置

, figureFileSmall=null, figureFileBig=null, tableContent=
参数/单位工况A工况B工况C工况D工况E工况F工况G工况H
风速VW /(m·s−1)8.28.2008.28.200
风向θW /°90135901359013590135
浪高HS /m1.71.71.71.71.71.71.71.7
海浪周期TP /s77777777
海水流速VS /(m·s−1)000.510.51000.510.51
拖带角θA /°5244464048426053
拖带角θB /°2214161018123023
压载状态 /−半载半载半载半载满载满载满载满载
), ArticleFig(id=1324392782999199936, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.8, caption=

Results of static analysis

, figureFileSmall=null, figureFileBig=null, tableContent=
名称工况A工况B工况C工况D工况E工况F工况G工况H
系泊大缆张力FL /kN485.45258.11437.54237.99423.19230.25481.69234.41
系泊大缆夹角θC /°27.8821.9227.522.8325.4822.2733.0626.35
拖缆A张力FtugA /kN204.58107.63172.0974.186178.7679.68221.66112.28
拖缆B张力FtugB /kN314.7224.87297.68217.61280.69216.16320.66199.57
), ArticleFig(id=1324392783066308801, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表8, caption=

静态分析结果

, figureFileSmall=null, figureFileBig=null, tableContent=
名称工况A工况B工况C工况D工况E工况F工况G工况H
系泊大缆张力FL /kN485.45258.11437.54237.99423.19230.25481.69234.41
系泊大缆夹角θC /°27.8821.9227.522.8325.4822.2733.0626.35
拖缆A张力FtugA /kN204.58107.63172.0974.186178.7679.68221.66112.28
拖缆B张力FtugB /kN314.7224.87297.68217.61280.69216.16320.66199.57
), ArticleFig(id=1324392783146000578, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.9, caption=

Results of dynamic analysis

, figureFileSmall=null, figureFileBig=null, tableContent=
工况系泊大缆张力FL /kN拖缆A张力FtugA /kN拖缆B张力FtugB /kN
平均值标准差最大值平均值标准差最大值平均值标准差最大值
工况A505.1188.11203.5204.54.6221.5314.72.1322.3
工况B260.988.2599.0107.91.4112.9225.01.0228.6
工况C459.7156.01355.1172.04.6188.6297.62.1305.3
工况D238.973.2566.074.31.379.2217.70.9221.0
工况E428.4152.7972.2178.63.5191.3280.61.8287.2
工况F211.282.8505.679.71.183.8216.20.7218.6
工况G501.8119.51101.7221.54.0236.0320.62.4329.5
工况H298.561.6549.0112.51.1116.5199.70.7202.4
), ArticleFig(id=1324392783229886659, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表9, caption=

动态分析结果

, figureFileSmall=null, figureFileBig=null, tableContent=
工况系泊大缆张力FL /kN拖缆A张力FtugA /kN拖缆B张力FtugB /kN
平均值标准差最大值平均值标准差最大值平均值标准差最大值
工况A505.1188.11203.5204.54.6221.5314.72.1322.3
工况B260.988.2599.0107.91.4112.9225.01.0228.6
工况C459.7156.01355.1172.04.6188.6297.62.1305.3
工况D238.973.2566.074.31.379.2217.70.9221.0
工况E428.4152.7972.2178.63.5191.3280.61.8287.2
工况F211.282.8505.679.71.183.8216.20.7218.6
工况G501.8119.51101.7221.54.0236.0320.62.4329.5
工况H298.561.6549.0112.51.1116.5199.70.7202.4
), ArticleFig(id=1324392783334744260, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.10, caption=

Main parameters of shuttle tankers

, figureFileSmall=null, figureFileBig=null, tableContent=
参数/单位T-1T-2T-3
总长LOA /m184199.9228.6
型宽B /m32.332.332.3
总载重DWT /t526875619275493
), ArticleFig(id=1324392783401853125, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表10, caption=

穿梭油轮主要参数

, figureFileSmall=null, figureFileBig=null, tableContent=
参数/单位T-1T-2T-3
总长LOA /m184199.9228.6
型宽B /m32.332.332.3
总载重DWT /t526875619275493
), ArticleFig(id=1324392783473156294, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.11, caption=

Parameter settings for simulation experiment scenarios

, figureFileSmall=null, figureFileBig=null, tableContent=
场景操作内容FPSO流风海浪提油轮
状态系缆 /m流速 /kn流来向 /°流去向 /°风速 /kn风向 /°浪高 /m周期 /s浪向 /°状态艏向 /°
S1东北
外输点
双艉拖
满载1001110290161101.54.3110半载200
S2半载1001110290161101.54.3110半载200
S3半载1001110290161101.54.3110满载200
S4西南
外输点
单艉拖
满载10026524536454.87.345半载60
S5半载10026524536454.87.345半载60
S6半载10026524536454.87.345满载60
), ArticleFig(id=1324392783540265159, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表11, caption=

外输模拟实验场景参数设定

, figureFileSmall=null, figureFileBig=null, tableContent=
场景操作内容FPSO流风海浪提油轮
状态系缆 /m流速 /kn流来向 /°流去向 /°风速 /kn风向 /°浪高 /m周期 /s浪向 /°状态艏向 /°
S1东北
外输点
双艉拖
满载1001110290161101.54.3110半载200
S2半载1001110290161101.54.3110半载200
S3半载1001110290161101.54.3110满载200
S4西南
外输点
单艉拖
满载10026524536454.87.345半载60
S5半载10026524536454.87.345半载60
S6半载10026524536454.87.345满载60
), ArticleFig(id=1324392783628345544, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.12, caption=

Simulation results for T-3/Scenarios S1~S3

, figureFileSmall=null, figureFileBig=null, tableContent=
分类/单位均值标准差最小值最大值
S1系泊大缆张力FL1 /kN630.587.9400.9886.5
S1系泊大缆夹角θC1 /°−17.25.7−25.0−5.0
S2系泊大缆张力FL2 /kN910.7148.1579.31372.8
S2系泊大缆夹角θC2 /°−47.50.7−48.7−45.9
S3系泊大缆张力FL3 /kN851.5113.8490.01176.0
S3系泊大缆夹角θC3 /°−26.45.0−29.7−20.3
), ArticleFig(id=1324392783729008841, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表12, caption=

T-3/S1~S3模拟结果统计

, figureFileSmall=null, figureFileBig=null, tableContent=
分类/单位均值标准差最小值最大值
S1系泊大缆张力FL1 /kN630.587.9400.9886.5
S1系泊大缆夹角θC1 /°−17.25.7−25.0−5.0
S2系泊大缆张力FL2 /kN910.7148.1579.31372.8
S2系泊大缆夹角θC2 /°−47.50.7−48.7−45.9
S3系泊大缆张力FL3 /kN851.5113.8490.01176.0
S3系泊大缆夹角θC3 /°−26.45.0−29.7−20.3
), ArticleFig(id=1324392783800312010, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.13, caption=

Simulation scenario parameters for T-3/scenarios S2-1~S2-5

, figureFileSmall=null, figureFileBig=null, tableContent=
场景操作内容FPSO环境载荷流风浪穿梭油轮
状态系缆 /m风浪流同向 /°流速 /kn风速 /kn浪高 /m周期 /s状态艏向 /°
S2-1在泊模拟满载1002001161.54.3半载200
S2-2在泊模拟半载1001551161.54.3半载200
S2-3在泊模拟半载1001101161.54.3半载200
S2-3-1在泊模拟半载1001101202.04.8半载200
S2-3-2在泊模拟半载1001101242.65.4半载200
S2-4在泊模拟半载100651161.54.3半载200
S2-5在泊模拟半载100201161.54.3半载200
), ArticleFig(id=1324392783888392395, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表13, caption=

T-3/S2-1~S2-5模拟实验场景参数设定

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场景操作内容FPSO环境载荷流风浪穿梭油轮
状态系缆 /m风浪流同向 /°流速 /kn风速 /kn浪高 /m周期 /s状态艏向 /°
S2-1在泊模拟满载1002001161.54.3半载200
S2-2在泊模拟半载1001551161.54.3半载200
S2-3在泊模拟半载1001101161.54.3半载200
S2-3-1在泊模拟半载1001101202.04.8半载200
S2-3-2在泊模拟半载1001101242.65.4半载200
S2-4在泊模拟半载100651161.54.3半载200
S2-5在泊模拟半载100201161.54.3半载200
), ArticleFig(id=1324392783980667084, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.14, caption=

Simulation results for T-3/scenarios S2-1~S2-5

, figureFileSmall=null, figureFileBig=null, tableContent=
场景大缆张力 /kN大缆夹角 /°拖轮A拉力 /kN拖缆A夹角 /°拖轮B拉力 /kN拖缆B夹角 /°
S2-1196~490−5~−1147160117.6200
S2-2196~980−26~−19294190343225
S2-3176.4~1160−36~−30294200392240
S2-3-1137.2~1040−20~−10392200392240
S2-3-2117.6~1180−11~8343~392200~205274.4~392240
S2-498~882−33~339218098~343233
S2-50~8825~6598~4901450~294215
), ArticleFig(id=1324392784081330381, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表14, caption=

T-3/S2-1~S2-5模拟实验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
场景大缆张力 /kN大缆夹角 /°拖轮A拉力 /kN拖缆A夹角 /°拖轮B拉力 /kN拖缆B夹角 /°
S2-1196~490−5~−1147160117.6200
S2-2196~980−26~−19294190343225
S2-3176.4~1160−36~−30294200392240
S2-3-1137.2~1040−20~−10392200392240
S2-3-2117.6~1180−11~8343~392200~205274.4~392240
S2-498~882−33~339218098~343233
S2-50~8825~6598~4901450~294215
), ArticleFig(id=1324392784194576590, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.15, caption=

Simulation results for T-1、T-2/scenarios S2-1~S2-5

, figureFileSmall=null, figureFileBig=null, tableContent=
穿梭油轮场景大缆张力 /kN大缆夹角 /°拖轮A拉力 /kN拖缆A夹角 /°拖轮B拉力 /kN拖缆B夹角 /°
T-1S2-198~490−5~−19816098200
S2-298~784−16~−13215.6165107.8225
S2-349~539−13~−424520088.2230
S2-439.2~617.4−6~20264.61800~215.6230
S2-50~8825~65215.6~313.6160~1800.98230
T-2S2-1215.6~333.2−1~0.10210196180
S2-2352.8~460.6−22~−19147210205.8180
S2-3548.8~627.2−26~−24245220343185
S2-4470.4~637−29~−27.5245225392180
S2-5196~29415~300210343163~174
), ArticleFig(id=1324392784282656975, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表15, caption=

T-1、T-2/S2-1~S2-5模拟实验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
穿梭油轮场景大缆张力 /kN大缆夹角 /°拖轮A拉力 /kN拖缆A夹角 /°拖轮B拉力 /kN拖缆B夹角 /°
T-1S2-198~490−5~−19816098200
S2-298~784−16~−13215.6165107.8225
S2-349~539−13~−424520088.2230
S2-439.2~617.4−6~20264.61800~215.6230
S2-50~8825~65215.6~313.6160~1800.98230
T-2S2-1215.6~333.2−1~0.10210196180
S2-2352.8~460.6−22~−19147210205.8180
S2-3548.8~627.2−26~−24245220343185
S2-4470.4~637−29~−27.5245225392180
S2-5196~29415~300210343163~174
), ArticleFig(id=1324392784395903184, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=EN, label=Tab.16, caption=

Simulation results for T-3/scenarios S4~S6

, figureFileSmall=null, figureFileBig=null, tableContent=
场景大缆张力 /kN大缆夹角 /°拖轮B拉力 /kN拖缆B夹角 /°
S4343~784−17~−7441180
S5245~980−11~4441170
S6343~588−15~23343170
S4-1137.2~1040−20~−10392170
S5-198~1270−40~43294170
S6-1343~617.4−15~25343160
), ArticleFig(id=1324392784475594961, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1324392763105615884, language=CN, label=表16, caption=

T-3/S4~S6模拟实验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
场景大缆张力 /kN大缆夹角 /°拖轮B拉力 /kN拖缆B夹角 /°
S4343~784−17~−7441180
S5245~980−11~4441170
S6343~588−15~23343170
S4-1137.2~1040−20~−10392170
S5-198~1270−40~43294170
S6-1343~617.4−15~25343160
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面向复杂海况的圆筒型FPSO双外输系统设计与作业可行性研究
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谢修龙 1, 2 , 朱红钧 1 , 张政 1
船舶力学 | 流体力学 2026,30(7): 1106-1120
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船舶力学 |流体力学 2026 , 30 (7) : 1106 -1120
面向复杂海况的圆筒型FPSO双外输系统设计与作业可行性研究
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谢修龙(1988–),男,硕士,副教授级工程师

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谢修龙1, 2, 朱红钧1 , 张政1
作者信息
  • 1西南石油大学 石油与天然气工程学院,成都 610500
  • 2中海石油(中国)有限公司深圳分公司,广东 深圳 518067
作者简介:

谢修龙(1988–),男,硕士,副教授级工程师

朱红钧(1983–),男,博士,教授,通讯作者,E-mail:

Feasibility study and system design of dual offloading for cylindrical FPSO under complex marine conditions
Xiu-long XIE1, 2, Hong-jun ZHU1 , Zheng ZHANG1
Affiliations
  • 1School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China
  • 2China National Offshore Oil Corporation Shenzhen Branch, Shenzhen 518067, China
出版时间: 2026-07-15 doi: 10.3969/j.issn.1007-7294.2026.07.006
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圆筒型FPSO因其筒体构型和特殊运动机理,在高频变换风浪流复杂海况环境下的外输作业面临显著挑战。为解决这一问题,针对南海东部海域常年东北季风和西南季风环境条件,本研究提出一种“双外输点+艏装载+限位系泊”的新型外输系统方案,旨在替代造价高昂的DP穿梭油轮方式。方案通过在穿梭油轮艏部加装侧推装置,艉部设置双拖轮,实现方向与位置的协同控制,提升作业安全性与适应性。为验证外输方案可行性,采用数值分析与全任务模拟实验相结合的方法,系统研究了穿梭油轮、拖轮选型,以及穿梭油轮艏侧推设计和系泊大缆设计选型等关键技术要点,验证了在中国南海流花油田采用75 000吨穿梭油轮进行限位外输的可行性。研究发现,在流花海域环境条件下,外输系泊大缆的张力、夹角等与船舶吨位及船长成正相关性。本文研究成果可为圆筒型FPSO在复杂海况区域的低成本外输作业提供技术支持与风险预判依据。

圆筒型FPSO  /  外输方案  /  双艉拖动  /  穿梭油轮

Due to its cylindrical configuration and distinctive motion characteristics, the cylindrical FPSO faces significant challenges in offloading operations under complex marine conditions characterized by high-frequency variations in wind, waves, and currents. To address these challenges, particularly under the persistent northeastern and southwestern monsoon conditions in the eastern South China Sea, this study proposes a novel offloading system featuring dual offloading points, bow loading, and position-mooring configuration, intended as a cost-effective alternative to high-cost DP shuttle tankers. The proposed solution integrates a bow thruster on the shuttle tanker and dual stern tugs to enable coordinated control of heading and position, thereby enhancing operational safety and adaptability. To verify the feasibility of the proposed system, a combination of numerical simulations and full-mission maneuvering experiments was conducted. The study systematically investigates key technical aspects such as the selection of shuttle tankers and tugs, bow thruster configuration, and mooring hawser design. Results confirm the feasibility of employing a 75 000 DWT shuttle tanker for position-mooring offloading at the Liuhua oilfield in the South China Sea. Findings indicate a positive correlation between the tension and angle of mooring hawsers and the shuttle tanker's displacement and length. This study provides technical guidance and risk assessment insights for cost-effective offloading operations of cylindrical FPSOs in complex marine environments.

cylindrical FPSO  /  offloading solution  /  double-tail towing  /  shuttle tanker
谢修龙, 朱红钧, 张政. 面向复杂海况的圆筒型FPSO双外输系统设计与作业可行性研究. 船舶力学, 2026 , 30 (7) : 1106 -1120 . DOI: 10.3969/j.issn.1007-7294.2026.07.006
Xiu-long XIE, Hong-jun ZHU, Zheng ZHANG. Feasibility study and system design of dual offloading for cylindrical FPSO under complex marine conditions[J]. Journal of Ship Mechanics, 2026 , 30 (7) : 1106 -1120 . DOI: 10.3969/j.issn.1007-7294.2026.07.006
浮式生产储油卸油装置(Floating Production Storage and Offloading, FPSO)以其抗风浪能力强、储油量大、运动性能好等优点被广泛应用[1−4],据统计,目前全球共有216艘FPSO,包括166艘船型、7艘圆筒型和43艘其他类型FPSO。为适应海洋油气开发生产的需要,新型海洋浮式平台不断出现[5−8]。其中,圆筒型FPSO以工程投资成本低[9-10]、恶劣环境适应性强和无需复杂单点系泊系统[11]等优点而成为深水油气开发领域的重要选择。圆筒型FPSO对风、浪、流具有良好的屏蔽作用,可以在其背风面提供可靠的泊位,有利于卸载作业[12]。
然而圆筒型FPSO垂荡运动性能较差[13],研究发现,其固有垂荡周期约为15~18 s,与中国南海波浪的谱峰周期相接近,垂荡运动幅值较大,稳性控制难度增大[14-15],会对外输系泊作业产生不利影响,因此迫切需要适应性更强的外输技术方案。当前,大部分船型FPSO采用穿梭油轮串靠艉输的方式进行原油外输作业,但在部分环境恶劣海域和非船型FPSO作业场景下,常规穿梭油轮往往不能满足实际作业需要。国际工程实践中多采用带动力定位(Dynamic Positioning, DP)系统的穿梭油轮与圆筒型FPSO配套作业,通过主动推进系统实现穿梭油轮的艏向与位置控制,以适应非风向标平台作业需求。虽然DP系统可有效提升作业安全性和可操作性,但其建造成本约为常规穿梭油轮的2~3倍,运维和人力成本也大幅增加,整体生命周期费用较高。在当前“降本增效”与“高质量开发”的背景下,DP穿梭油轮在国内深水边际油田中的推广面临现实制约。
目前,国内外专家学者对船型FPSO原油外输方案的研究较为广泛[16−18],而针对圆筒型FPSO原油外输方案的研究较少。由于圆筒型FPSO抵抗波浪垂荡性能差[19-20],且常规穿梭油轮船位控制差,一定程度上影响了圆筒型FPSO外输作业安全性。基于上述工程需求与技术挑战,本文提出“圆筒型FPSO设置双外输点,穿梭油轮设置艏装载、艏侧推以及双拖轮拖艉”的外输方案(以下简称双外输方案)并基于南海典型环境数据,开展多工况数值仿真计算与操控模拟实验,分析不同吨位穿梭油轮在多方向风、浪、流载荷及内波流、强对流等非线性扰动下的动力响应、系泊大缆与拖缆张力变化规律等核心指标。研究结果为后续圆筒型FPSO外输系统设计优化、经济替代方案论证与作业风险预测提供理论依据与技术支撑。
流花油田位于中国南海珠江口盆地,所在海域水深约267~330 m。经过28年开发生产,该油田目前开发采收率仅为12%。综合考虑所在海域恶劣环境条件、油田二次开发经济性差以及船型FPSO单点系泊系统“卡脖子”技术等因素,计划新建一座圆筒型FPSO和一座深水导管架平台,进行油田的继续开发[21-22],圆筒型FPSO设计参数见表1。
海上原油外输方式主要有动力定位外输、悬链式锚腿系泊外输(Catenary Anchor Leg Mooring, CALM)、原油转驳装置外输(Cargo Transfer Vessel, CTV)、高负荷原油输送外输(High-Load Offshore Cargo Transfer, Hi-Load)和常规穿梭油轮外输等5种类型,其中CALM、CTV初始投资高,在中国南海海域无应用实例;Hi-Load对穿梭油轮吨位和尺寸有限制,且CALM、CTV和Hi-Load都将面临穿梭油轮限位问题;因圆筒型FPSO为多点系泊、无风向标效应,常规穿梭油轮在作业海域环境条件下难以长时间稳定定位;DP穿梭油轮具备良好的恶劣环境适应性,巴西、英国、挪威等国家将DP穿梭油轮广泛应用于圆筒型FPSO的外输作业。然而,DP穿梭油轮的造价是常规穿梭油轮的2~3倍,操作、运维成本也远高于常规穿梭油轮,国内除“深海一号”应用DP穿梭油轮外,其他11艘在役FPSO均采用常规穿梭油轮。
综合经济性、安全性、环境适应性和作业率等因素,本文提出的“圆筒型FPSO设置双外输点,穿梭油轮设置艏装载、艏侧推以及双拖轮拖艉”外输方案(简称双外输方案),即在圆筒型FPSO上设置东北、西南两个外输点,以适应不同方向季风条件下的作业需要:冬季季风时,因强风向标效应,采用西南外输点和单艉拖方案进行外输;夏季季风时,风向标效应减弱且5−8月份为流花海域内波流盛行期,穿梭油轮船位控制难度增大,采用东北外输点和双艉拖方案进行外输,实际作业过程中,作业者可根据气象海况灵活选择外输方案以及拖轮数量。穿梭油轮艏部增加294 kN推力的艏侧推,提高穿梭油轮艏向操控性;穿梭油轮艉部通过一条或两条拖轮拖带实现艉向及左右方向的限位。穿梭油轮在系泊大缆、双艉拖缆及艏侧推的联合作用下,实现方位和艏向的协同控制,提高可作业率和外输安全性,改造后的穿梭油轮受力示意图见图1。
然而,该方案在海洋石油行业属于首次应用,FPSO−穿梭油轮−双拖轮四体协同作业系统的动力耦合特征尚不明确,多水面船舶体系之间的受力、相对位移特性,穿梭油轮遭遇不同方向风、浪、流载荷以及内波流、强对流等特殊环境条件下的作业安全性等需进一步研究,以验证该方案在中国南海海域恶劣环境下的适应性。
通过对流花海域历史气象资料进行分析,可知该海域全年盛行风向为东北向和西南向,概率占全年风向的75%以上。从提高靠泊、外输作业安全性和季风季节可作业率方面考虑,确定圆筒型FPSO双外输点设置如下:假设正北方向为0°,东北外输点设置在30°附近(±10°),西南外输点设置在240°附近(±3°)。双外输点设置如图2所示。
参考DP穿梭油轮的定位经验,本方案在穿梭油轮艏部配置侧推装置,艉部使用两艘拖轮拖艉,以达到DP穿梭油轮的同等定位功能。穿梭油轮艏侧推及拖轮的关键设计参数见表2。
按照OCIMF《Guidelines for Offshore Tanker Operations》(GOTO), 1st Ed, 2018技术指南要求,系泊大缆的安全工作载荷( Safe Working Load, SWL)不得小于穿梭油轮止链器的SWL,止链器的SWL与穿梭油轮载重吨(Dead Weight Tonnage, DWT)的对应关系见表3[23]。
本项目所用穿梭油轮为6万t级,止链器SWL为1960 kN,因此系泊大缆SWL为1960 kN,考虑3倍安全系数,系泊大缆最小破断载荷(Minimum Breaking Load, MBL)为6370 kN,系泊大缆和拖轮拖缆详细设计参数见表4,系泊大缆和拖缆特性曲线如图3所示。
外输软管长度195 m、内径406.4 mm,两端均应配备应急释放装置,考虑波浪对外输软管的影响,圆筒型FPSO采用浸没式软管。
本次计算分析建立在DNV的计算分析方法基础之上[24-25],并根据原油外输作业实际情况调整了穿梭油轮及拖轮的参数。
假设环境载荷集中作用于穿梭油轮中心点,在横向和纵向的中心点分别计算作用在穿梭油轮上的环境力,受力分析如图4所示。
$ F_{x}^{{\mathrm{E}}}=F_{x}^{{\mathrm{T}}}-F_{x}^{{\mathrm{C}}} $
$ M_{y}^{{\mathrm{E}}}={X}_{T}F_{y}^{{\mathrm{T}}}-{X}_{{\mathrm{C}}}F_{y}^{{\mathrm{C}}} $
其中,$ F_{x}^{{\mathrm{E}}} $为系泊大缆和拖缆合力的纵向分量,$ F_{x}^{{\mathrm{C}}} $和$ F_{y}^{{\mathrm{C}}} $为系泊大缆的纵向力和横向力,$ F_{x}^{{\mathrm{T}}} $和$ F_{y}^{{\mathrm{T}}} $为拖缆的纵向力和横向力,$ M_{y}^{{\mathrm{E}}} $为在水平面上的转动力矩,$ {X}_{{\mathrm{C}}} $和$ {X}_{T} $为系泊大缆和拖缆作用力点与船舶中点之间的距离。
$ {F}^{{\mathrm{C}}}=\frac{F_{y}^{{\mathrm{C}}}}{\sin {\theta }_{{\mathrm{C}}}} $
$ F_{x}^{{\mathrm{C}}}={F}^{{\mathrm{C}}}\cos {\theta }_{{\mathrm{C}}} $
$ {F}^{{\mathrm{T}}}=\sqrt{{\left(F_{x}^{{\mathrm{T}}}\right)}^{2}+{\left(F_{y}^{{\mathrm{T}}}\right)}^{2}} $
其中,$ {F}^{{\mathrm{C}}} $为系泊大缆的力,$ {\theta }_{{\mathrm{C}}} $为系泊大缆与穿梭油轮中心线在水平面上的夹角,$ {F}^{{\mathrm{T}}} $为拖缆的合力。
两个拖轮的合力计算如下
$ F_{x}^{{\mathrm{T}}}=F_{}^{{\mathrm{A}}}\cos {\theta }_{{\mathrm{A}}}+F_{}^{{\mathrm{B}}}\cos {\theta }_{{\mathrm{B}}} $
$ F_{y}^{{\mathrm{T}}}=F_{}^{{\mathrm{A}}}\sin {\theta }_{{\mathrm{A}}}+F_{}^{{\mathrm{B}}}\sin {\theta }_{{\mathrm{B}}} $
其中,$ F_{x}^{{\mathrm{T}}} $、$ F_{y}^{{\mathrm{T}}} $为拖轮合力在X/Y轴方向的分力,$ {F}^{{\mathrm{A}}} $和$ {F}^{{\mathrm{B}}} $为拖轮A和B的拖曳力,$ {\theta }_{{\mathrm{A}}} $和$ {\theta }_{{\mathrm{B}}} $为拖轮A和B大缆与穿梭油轮中心线在水平面上的夹角。
(2)动态计算
在多浮体水面系统中,圆筒型FPSO和穿梭油轮受风、浪、流环境力,锚系、系泊缆、拖轮拖缆张力等作用力。因此,基于 Cummins 方程,扩展得到多浮体耦合运动方程并用OrcaFlex进行求解
$ \begin{array}{c}\left[\begin{matrix}{(M+A)}^{11} & {(M+A)}^{12}\\{(M+A)}^{21} & {(M+A)}^{22}\end{matrix}\right]\left[\left[\begin{array}{c}\ddot{x}{(t)}^{1}\\\ddot{x}{(t)}^{2}\end{array}\right]\right]+\left[\begin{matrix}\displaystyle\int \limits_{0}^{t}{h}^{11}(t-\tau ){\mathrm{d}}\tau & \displaystyle\int \limits_{0}^{t}{h}^{12}(t-\tau ){\mathrm{d}}\tau \\\displaystyle\int \limits_{0}^{t}{h}^{21}(t-\tau ){\mathrm{d}}\tau & \displaystyle\int \limits_{0}^{t}{h}^{22}(t-\tau ){\mathrm{d}}\tau \end{matrix}\right]\left[\left[\begin{array}{c}\dot{x}{(t)}^{1}\\\dot{x}{(t)}^{2}\end{array}\right]\right]+\left[\begin{matrix}{K}^{1} & 0\\0 & {K}^{2}\end{matrix}\right]\left[\begin{array}{c}x{(t)}^{1}\\x{(t)}^{2}\end{array}\right]\\=\left[\begin{array}{l}F_{{\mathrm{all}}}^{1}\left(x{(t)}^{1},\dot{x}{(t)}^{1},x{(t)}^{2},\dot{x}{(t)}^{2}\right)\\F_{{\mathrm{all}}}^{2}\left(x{(t)}^{1},\dot{x}{(t)}^{1},x{(t)}^{2},\dot{x}{(t)}^{2}\right)\end{array}\right]\end{array} $
其中,$ {(M+A)}^{i,j} $为第j个浮体对第i个浮体作用的质量惯性矩阵和附加质量惯性矩阵,$ (t-\tau ) $为延迟函数时间延迟量,$ \displaystyle\int \limits_{0}^{t}{h}^{ij}(t-\tau )\dot{x}(t){\mathrm{d}}\tau $为延迟函数卷积, $ {K}^{i} $为浮体$ i $的静水恢复力矩阵,$ x{(t)}^{i} $为浮体$ i $的运动矢量,$ F_{{\mathrm{all}}}^{i} $为施加在浮体$ i $上的总外力矢量。
借助上述分析方法对外输方案进行双艉拖动态分析,设计参数见表5。
根据所设置的坐标系,建立数值分析模型,模型示意图见图5。模型中,圆筒型FPSO采用多点系泊系统,在实际外输作业中运动响应较小,因此将圆筒型FPSO系泊点设置为固定点,主要研究穿梭油轮的运动情况。外输作业的初始位置为FPSO朝向正北方向,FPSO、穿梭油轮保持在一条直线上,相对夹角$ {\theta }_{{\mathrm{C}}} $为0°;穿梭油轮艏向、拖轮A/B拖带角、环境载荷入射角分别为$ {\theta }_{{\mathrm{H}}} $、$ {\theta }_{{\mathrm{E}}} $、$ {\theta }_{{\mathrm{A}}} $、$ {\theta }_{{\mathrm{B}}} $,系泊缆绳,拖轮A、B拖缆张力分别为$ {F}_{{\mathrm{L}}} $、$ {F}_{\text{tug}A{\mathrm{}}} $、$ {F}_{\text{tug}{\mathrm{B}}} $。
基于实际作业经验,当穿梭油轮遭遇正横风(90°入射)与左后横风(135°入射)时,船舶艏向保持与船位控制难度显著增加。为考察环境载荷最严苛工况,本文选取90°与135°两种环境载荷入射方向作为分析场景并且假定风、浪、流同向,根据本文2.1.1节所述方法,拖轮拖带角$ {\theta }_{{\mathrm{A}}} $和$ {\theta }_{{\mathrm{B}}} $等关键参数设置见表6。
选取外输作业各种工况下的系泊大缆张力和夹角、穿梭油轮偏移量、拖缆张力等极值进行比较分析,对外输方案中双艉拖模式进行可行性验证。模拟工况设置见表7。本文中,“满载”为装载量达到最大设计载重量的状态,“半载”为部分装载的状态。
选取半载和满载两种状态,研究在不同环境载荷作用下船舶耦合动力响应。不同组合的装载工况下系泊大缆和拖缆A、B的静态张力变化规律见表8。
对表8进行分析可得,圆筒型FPSO采用75000吨级穿梭油轮进行双艉拖作业时,系泊大缆、拖缆A和B的最大张力分别为485 kN、221 kN和321 kN,均发生在环境载荷90°入射工况下。系泊大缆最大张力远低于1960 kN的安全工作载荷,拖缆A和B的拖带张力均低于拖轮系柱拖力的80%,从静态分析结果可得双艉拖外输方案满足外输作业要求。
动态响应分析主要模拟3 h环境载荷作用下外输系统的运动响应情况,计算结果见表9。
由表9可知,系泊大缆和拖缆A、B的最大拖带张力均发生在环境载荷入射角90°时,其中系泊大缆最大张力发生在工况C,最大值为1360 kN;拖缆A和B最大张力发生在工况G,最大值分别为236 kN和330 kN。系泊大缆最大张力低于1960 kN的安全工作载荷,拖缆A和B拖带张力均低于拖轮系柱拖力的80%。进一步对环境载荷入射角90°的A、C、E、G四个工况的系泊大缆张力和夹角进行分析,系泊大缆张力和夹角时历曲线如图6~7所示。工况A、C下,系泊大缆张力和夹角波动较大,工况C张力最大为1360 kN、夹角最大为210°,表明穿梭油轮在环境载荷作用下处于相对不稳定状态;工况E、G下,系泊大缆张力和夹角波动范围较小,穿梭油轮在环境载荷作用下相对稳定。对比A、C和E、G两组工况可知,穿梭油轮压载状态对系泊稳定性影响较大,其中满载状态下更有利于系泊稳定。
综上可得,静力、动力计算的系泊缆绳张力、拖带缆绳张力及缆绳夹角等均小于安全作业限值,数值计算结果表明“艏侧推、双艉拖”外输方案满足圆筒型FPSO安全外输作业要求。穿梭油轮满载状态较半载状态更稳定,实际作业过程中,可通过调整穿梭油轮配载状态提高船舶稳定性。
本次模拟实验中所使用的模拟设备为船舶操纵全任务模拟器,模拟器所用软件为K-SIM NAVIGATION。该模拟器由挪威Kongsberg公司设计研发并通过了DNV的验证,可用于船舶操纵、海洋溢油、海事碰撞及海工作业等模拟实验,模拟设备如图8所示。
实验针对T-1、T-2、T-3 三艘穿梭油轮的在泊、内波流、强对流三种环境进行模拟,T-1、T-2、T-3三艘穿梭油轮参数见表10,系泊点在东北外输点(30°),如图9所示。
模拟实验中设备参数设置见表6,同时对相关参数安全阈值作如下规定:风速≤16 m/s且横风≤8 m/s;有义波高≤3.5 m;大缆张力30 min内超980 kN不多于3次,或单次不超1960 kN;大缆夹角安全范围−30°≤θC≤30°,警戒范围−45°≤θC≤45°;拖缆夹角安全范围−40°≤θA≤70°,−70°≤θB≤40°,模拟实验具体参数设定见表11。
(1)对T-3进行S1、S2、S3场景模拟实验
首先对T-3进行S1~S3场景模拟实验,探究最不利压载组合。通过模拟实验,获得S1~S3系泊大缆张力时历曲线如图10所示;系泊大缆及拖缆A、B的张力FL、FtugA、FtugB、夹角θC、θA、θB的特征量详见表12。对比分析图10和表12发现,S2场景下系泊大缆张力频繁超过980 kN安全阈值,系泊大缆夹角超过±30°安全范围;S3场景下系泊缆张力有短暂超过980 kN的情况,但持续时间较短,系泊大缆夹角维持在安全范围内;S1场景下无论系泊大缆张力还是大缆夹角都在安全范围内。因此,S2场景所对应的“半载−半载”为最不利压载状态,后续极限承载力校核以该压载状态作为输入条件之一。
(2)基于T-3、S2“半载−半载”工况,进行S2-1~S2-5场景模拟
在FPSO和穿梭油轮都处于半载状态下,分别进行穿梭油轮正前、左前、左正横、左后和正后五个方向受风、流模拟试验以探究最不利风向,分别记为S2-1、S2-2、S2-3、S2-4、S2-5,模拟实验参数见表13,模拟实验结果见表14。其中,S2-1、S2-2场景下系泊大缆张力、夹角以及拖缆A、B的拉力、夹角均在安全范围内,穿梭油轮易达到平衡状态,为较稳定的在泊场景;S2-3场景下系泊大缆张力频繁超过980 kN,S2-4、S2-5场景下需频繁调节拖轮A、B的拖带拉力才能使穿梭油轮处于相对稳定状态,因此S2-3~S2-5为不稳定的在泊场景。由于S2-4、S2-5场景下穿梭油轮在泊状态很不稳定,因此不再提高风速进行模拟,而仅基于S2-3场景提高风速、浪高等环境条件,作进一步模拟分析以探索极限风速。在S2-3场景基础上,提高风速至20 kn、有义波高2 m、周期4.8 s,记为S2-3-1,实验测试得到系泊大缆张力、相对穿梭油轮方向角以及拖轮等相关参数均在安全范围内;在S2-3基础上,继续提高风速至24 kn、有义波高2.6 m、周期5.4 s,记为S2-3-2,模拟发现,该场景下系泊大缆张力频繁超过980 kN,且最大可达1180 kN,已不能安全进行外输作业。在其他条件相同的条件下,穿梭油轮的在泊状态随风速的提高而越来越难以控制。综上所述,T-3穿梭油轮半载、FPSO半载、左正横、左正横后场景下的安全外输风速为20 kn。
(3)对T-1、T-2分别进行S2-1~S2-5场景模拟
分别对5.0×104吨级和5.5×104吨级的T-1、T-2穿梭油轮开展S2模拟分析,模拟实验结果见表15。由表15可知,T1、T2在S2场景下的系泊大缆张力、夹角以及拖轮拖缆张力、夹角均在安全阈值内。对比分析表明,随着穿梭油轮吨位的降低,系泊大缆的张力及角度变化幅度总体呈减小趋势,拖轮A、B的拖带拉力和角度变化范围亦相应减小,这表明较低吨位的穿梭油轮在系泊作业中更易达到平衡位置,系泊系统的整体响应更为平稳。
综合表14和表15的分析结果可知,T-1、T-2和T-3三种型号的穿梭油轮在系泊状态下均能满足外输作业的安全要求。然而,在T-3半载、FPSO半载、左正横、左正横后风向工况条件下,安全外输临界风速为 20 kn。为保障外输作业安全,对于吨位小于T-3的穿梭油轮,在同样压载条件及风向条件下,其外输作业的风速控制限值应参照20 kn执行。
(4)对T-3分别进行S4、S5、S6场景模拟
根据3.3节(1)、(2)部分的研究,穿梭油轮吨位越大,其船位维持与姿态控制的难度越高。基于此,本节重点考察T-3在西南外输点、单艉拖外输方案下的风速条件限值。对T-3分别开展S4、S5、S6三种场景的数值模拟,结果表明:在S4、S5、S6场景下,系泊大缆与拖缆B的各关键参数均处于安全范围之内。为进一步探究风况极限,将风速提高至40 kn,分别记为S4-1、S5-1和S6-1场景,其模拟结果及与S4~S6的对比列于表16和图11。
当风速升至40 kn时,S4-1场景下系泊大缆张力出现短暂超过980 kN的情况,随后迅速回落至安全范围内,大缆夹角始终处于安全范围;S5-1场景下系泊大缆张力持续远超980 kN安全限值,大缆夹角在−40°~43°区间内大幅波动,处于失稳危险状态;S6-1场景下系泊大缆张力与夹角均处于安全范围内。由于S5-1为S4-1向S6-1过渡的中间态,因此可判断西南外输点、单艉拖外输作业的临界风速为36 kn。
本文通过数值模拟和船舶模拟器模拟相结合的方案,对不同吨位的穿梭油轮在不同场景下的圆筒型FPSO双外输系统的设计与作业可行性开展研究,主要结论如下:
(1)针对圆筒型FPSO在复杂海况下外输作业的挑战,本文提出的外输方案总体可行。该方案作为高成本DP穿梭油轮的替代方案,通过选择合适外输作业点和双拖轮拖带的协同控制,可提升外输作业安全性和环境适应性。
(2)穿梭油轮的吨位与系泊大缆张力及夹角呈正相关关系。随着船舶吨位的降低,系泊大缆和拖缆的张力及夹角变化幅度总体呈减小趋势,表明船舶吨位越小,系泊系统越容易达到动态平衡位置,作业安全性相对更高。
(3)T-1、T-2、T-3三种型号的穿梭油轮在系泊状态下均能满足外输作业的安全要求。但需注意采用东北外输点、双艉拖方案进行外输作业的安全临界风速为20 kn,采用西南外输点、单艉拖方案的安全临界风速为36 kn。
  • 工信部“边际油田生产装置自主开发”课题(GXKY-2016-GCJS-01-2)
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2026年第30卷第7期
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doi: 10.3969/j.issn.1007-7294.2026.07.006
  • 接收时间:2025-12-19
  • 首发时间:2026-11-03
  • 出版时间:2026-07-15
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  • 收稿日期:2025-12-19
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工信部“边际油田生产装置自主开发”课题(GXKY-2016-GCJS-01-2)
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    1西南石油大学 石油与天然气工程学院,成都 610500
    2中海石油(中国)有限公司深圳分公司,广东 深圳 518067
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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