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Comparative Study for S-lay and J-lay Pipeline Installation Methods

ABSTRACT第4页
1 CHAPTER1 INTRODUCTION第8-11页
    1.1 Purpose and Significance of Research Work第8-9页
        1.1.1 Pipeline System第8页
        1.1.2 Pipeline Installation第8页
        1.1.3 Phases of pipeline project第8-9页
    1.2 Objectives and Scope of Work第9-10页
    1.3 Arrangement of Thesis Report第10-11页
2 CHAPTER 2 OFFSHORE PIPELAYING-OVERVIEW第11-22页
    2.1 Introduction第11页
    2.2 The History第11-13页
        2.2.1 Operation Pluto第12页
        2.2.2 The 1950s and 1960s第12页
        2.2.3 The 1970s and 1980s第12-13页
        2.2.4 The 1990s and the Present第13页
    2.3 Installation Methods第13-19页
        2.3.1 Lay Methods第13-17页
        2.3.2 Tow Methods第17-19页
    2.4 Standards第19-20页
    2.5 Measurements第20-22页
        2.5.1 Vessel position and velocity第20页
        2.5.2 Touchdown position第20页
        2.5.3 Axial tension第20页
        2.5.4 Departure angle第20页
        2.5.5 Roller pressure第20-21页
        2.5.6 Distance to last roller第21页
        2.5.7 Free—span pipe length第21页
        2.5.8 Touchdown distance第21页
        2.5.9 Water depth第21页
        2.5.10 Environmental loads第21-22页
3 CHAPTER 3 PIPELAYING MECHANICS第22-40页
    3.1 Introduction第22页
    3.2 Pipeline Configuration第22-23页
    3.3 Installation Stresses第23-28页
        3.3.1 Overbend Region第24-25页
        3.3.2 Sagbend Region第25-28页
        3.3.3 Intermediate Region第28页
    3.4 Methods Developed To Analyze Bend Stresses第28-29页
        3.4.1 Small Deflection Method第28页
        3.4.2 Nonlinear Beam Method第28-29页
        3.4.3 Natural Catenary Method第29页
        3.4.4 Stiffened Catenary Method第29页
        3.4.5 Finite Element Method第29页
    3.5 Pipelay Tension第29-31页
        3.5.1 Comparing S-lay and J-lay第29-31页
        3.5.2 The Optimal Pipelay Tension第31页
    3.6 Pipeline Installation Loads第31-32页
    3.7 Methodology第32页
    3.8 Normal Lay Analysis第32-38页
        3.8.1 Static Configuration Analysis第32-37页
        3.8.2 Strain Check第37页
        3.8.3 Route Radius Check第37-38页
    3.9 FE Computer Programs for Pipe Laying Analysis第38-40页
        3.9.1 ORCAFLEX第38-40页
4 CHAPTER 4 INSTALLATION ANALYSIS & RESULTS第40-61页
    4.1 Introduction第40页
    4.2 Basic Methodology第40页
    4.3 Modelling第40-41页
    4.4 Static Analysis第41页
    4.5 Dynamic Analysis第41-42页
    4.6 Common Data and Terminology第42-43页
        4.6.1 Environmental Data第42-43页
        4.6.2 Pipelay Equipment Data第43页
    4.7 Analysis Assumptions第43-44页
    4.8 Installation Analysis Results第44-49页
        4.8.1 Input Data第44-45页
        4.8.2 Results Output第45页
        4.8.3 Static Results Graphs第45-47页
        4.8.4 Dynamic Results Graphs第47-49页
    4.9 Installation Analysis for Different Pipe Sizes第49-52页
        4.9.1 Static Results for 16 in. Pipe,1000m Water Depth第49页
        4.9.2 Dynamic Results for 16 in. Pipe,1000m Water Depth第49-50页
        4.9.3 Static Analysis Results for 10 in. Pipe,1000m Water Depth第50页
        4.9.4 Dynamic Analysis Results for 10 in. Pipe,1000m Water Depth第50-51页
        4.9.5 Comparison of Results第51-52页
    4.10 Installation Analysis at Different Water Depths第52-55页
        4.10.1 Static Results for 20 in. Pipe,1500m Water Depth第52页
        4.10.2 Dynamic Results for 20 in. Pipe,1500m Water Depth第52-53页
        4.10.3 Static Results for 20 in. Pipe,2000m Water Depth第53页
        4.10.4 Dynamic Results for 20 in. Pipe,2000 m Water Depth第53-54页
        4.10.5 Comparison of Results第54-55页
    4.11 Installation Analysis for Different Current and Wave Direction第55-56页
        4.11.1 Dynamic Analysis Results-90°Direction of Wave and Current第55页
        4.11.2 Dynamic Analysis Results-180°Direction of Wave and Current第55-56页
        4.11.3 Comparison of Results第56页
    4.12 Installation Analysis for Different Stinger Angles第56-61页
        4.12.1 Static Results for 10 in. Pipe with 15°Stinger Angle第57页
        4.12.2 Dynamic Results for 10 in. Pipe with 15°Stinger Angle第57页
        4.12.3 Static Results for 10 in. Pipe with 20°Stinger Angle第57-58页
        4.12.4 Dynamic Results for 10 in. Pipe with 20°Stinger Angle第58页
        4.12.5 Static Results for 10 in. Pipe with 25°Stinger Angle第58-59页
        4.12.6 Dynamic Results for 10 in. Pipe with 25°Stinger Angle第59页
        4.12.7 Comparison of Results第59-61页
CONCLUDING REMARKS AND FUTURE RECOMMENDATIONS第61-63页
REFERENCES第63-67页
ACKNOWLEDGEMENTS第67页

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