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Table of Content

    25 June 2016, Volume 3 Issue 3 Previous Issue    Next Issue
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     Study on the Concept Selection and Global Sizing of Semi-Submersible Floating Production Platform
    DU Qing-gui
    2016, 3 (3):  145-152. 
    Abstract ( 247 )   PDF (5817KB) ( 210 )  
     
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    Installation and Key Technology of Mooring System for Floating Production Facilities in the South China Sea
    MA Chao, GAO Yuan, WANG Jie-wen
    2016, 3 (3):  153-158. 
    Abstract ( 247 )   PDF (3515KB) ( 206 )  
    Floating production facility is one of the main modes of offshore oil and gas field development. The installation of mooring system is the most important technology of floating production facilities, and has become the focus of the research of marine engineering industry. In combination with the mooring system installation practice of floating production facilities in the South China Sea, we analyze and discuss the type of mooring system, the installation process, the key technology of installation, the installation control points as well as the control solutions to the key problems. At the same time, we also compare the technical characteristics of the installation of the shallow water and deepwater mooring systems, and put forward the key technology of deepwater mooring system installation.
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    Research on Construction Technology of Legs in POD-6 Jackup Drilling Rig
    LI Qing, ZHUANG Guo-quan, GONG Yong-chun, ZHANG Qiang
    2016, 3 (3):  159-163. 
    Abstract ( 232 )   PDF (2482KB) ( 67 )  
    Legs are one of the most important structures in jackup drilling rig, which support the hull and are directly related to the safety of platform. Based on the POD-6 jackup drilling rig, which is constructed by Shanghai Waigaoqiao Shipbuilding and Offshore Engineering Co., Ltd., we analyze the feature of leg structure, and check its strength. Besides, we study the division and assemblage of leg blocks to increase the building efficiency. At last, legs’ long-term corrosion protecting technology is also researched and applied in POD-6. The research achievements have practical reference value for constructing similar jackup drilling rigs.
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    Installation Plan Analysis for Ultra-Shallow Split Jacket in JZ 9-3 Oilfield
    XIAO Hui, BO Zhao
    2016, 3 (3):  164-167. 
    Abstract ( 340 )   PDF (1673KB) ( 109 )  
    JZ 9-3 CEPD is an 8-leg center platform with a distinctive split-type jacket. According to the topside float-over installation requirements to depth and width of the jacket slot, the jacket of JZ 9-3 CEPD platform is divided into two independent structures. The accuracy control of pile decides whether the jacket installation an is successful or not. Based on actual project, the process is analyzed for the comparison and optimization of the ultra-shallow water split-type jacket installation plan are analyzed. It could be good references to the exploitation of offshore oil in future.
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    Application Research of Workover or Drilling Operation System on Cylindrical FPSO
    ZENG Dong, MO Xin, LI Xiong-yan, LAO Jing-shui, WANG Shao-ping, ZHU Mo
    2016, 3 (3):  168-174. 
    Abstract ( 203 )   PDF (3742KB) ( 72 )  
    We mainly introduces the composition and configuration of workover and drilling operation system capable of cylindrical floating production, storage and offloading system (FPSO), as well as the key heave compensator system. An operation system layout scheme which makes full use of the central moon pool area is demonstrated, and the frame structure which supports the operation system is analyzed. The analysis results show that the layout scheme is reasonable and feasible, which integrates workover or drilling well function on cylindrical FPSO successfully. This application research provides a new thought and the key technical reserves for the deepwater marginal oil field development.
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    Quantitative Analysis on Bohai Deep Rock and Clay: an Experimental Study
    FU Chuan-hong, CUI Jin-feng, WANG Jin-le, ZHANG Dai-ming, LIU Kai-quan, DONG Zhi-yan
    2016, 3 (3):  175-179. 
    Abstract ( 158 )   PDF (1941KB) ( 139 )  
    For a certain block of Bohai, problems of jamming, severe wear and premature failure of the drill bit and easy damage of the drilling tool appear during oil drilling. Aiming at this issue, we perform quantitative analysis of percentage of whole rock mineral constituents and the relative content of clay mineral components by using X ray diffraction method, carry out statistics and curve fitting with the analysis results, and correspond the test results with field application. The analysis results show that each lithology of whole rock mineral content and relative content of clay mineral is different. The influence of different whole-rock mineral composition on the hardness of the rock and the forming process is also different. Therefore, it has an important effect on the selection of drill bit and its drillability. The relative content of different clay minerals plays a key role in the preparation and selection of drilling fluid and oil and gas drilling. And we conduct curve fitting on a part of the whole rock and clay mineral composition, which can provide some reference for the research of mineral rock. The research conclusion has reference value for gas resources exploration and mining.
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    Top Tensioned Riser Installation Analysis Methodology
    XIA Ri-chang, LI Xu, YANG Hu
    2016, 3 (3):  180-183. 
    Abstract ( 159 )   PDF (1131KB) ( 101 )  
    We mainly study the top tensioned riser (TTR) installation analysis method. The TTR installation process has the characteristics of complicated positioning, easy interference and difficulty of stress control. In order to finish TTR installation successfully, the guideline, guide arm, key parameters of installation facility and riser positioning cases should be reasonably selected. The appropriate weather window and guide arm arrangement are determined via strength analysis, interference analysis and dynamic time domain analysis. This will provide the reference for TTR installation design and offshore operation.
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    The Investigation of FSHR Wall Thickness and Material Selection Method
    HUANG Yu
    2016, 3 (3):  184-188. 
    Abstract ( 184 )   PDF (1097KB) ( 53 )  
    The selection method for wall thickness and material of free standing hybrid riser (FSHR) is introduced from the aspects of design procedure, design load, design case and so on. Especially, the calculation principle is summarized according to the design code. The structure and description for FSHR are also described. An example of FSHR wall thickness selection is shown to give a further explanation.
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    Lightweight Living Quarters Scheme for Tension Leg Platform
    YUAN Xing-wei, LI Tuo-yi, GUO Shu-biao, REN Zhi-wei
    2016, 3 (3):  189-195. 
    Abstract ( 173 )   PDF (6901KB) ( 49 )  
    The weight of the tension leg platform's topside, which belongs to floating structure, has great impact on the general layout of the hull, while living quarters is an important component of platform's topside. On the basis of optimization of general layout of the living quarters, we compare and analyze the relevant structure type and outfitting materials, properly select the structure type and outfitting materials of the living quarters and propose the scheme of lightweight living quarters, ultimately realizing the purpose of reducing weight of the platform and improving economic efficiency of the hull.
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    Extending the Calibration Period of Ultrasonic Flowmeter by Using Acoustic Velocity Verification
    SUN Jing, WANG Chun-sheng, REN Tian-yi, SHANG Chao, ZHANG Ying, YAN Li-jun
    2016, 3 (3):  196-200. 
    Abstract ( 201 )   PDF (910KB) ( 198 )  
    Natural gas is one of the main clean energy sources, so the measurement of natural gas becomes more and more important. With the technological development, ultrasonic flowmeter has become the major instrument in high flowrate, high pressure, large diameter gas measurement. However, the flowmeter of gas metering system cannot be calibrated on site, which raises the cost and decreases the usability. According to the related standards, acoustic velocity verification can extend the calibration period of ultrasonic flowmeter. We introduce the principle and method of acoustic velocity verification and describe the typical application of this technology on offshore gas platform. It is shown that acoustic velocity verification can improve the usability of the gas metering system, and thus reduce the production cost and increase the production efficiency.
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    Application of AVEVA Remote Collaborative Technology in 3D Design of Offshore Oil Engineering
    JIANG Xiao-hua, WANG Jia, XU Geng, HUANG Tai-an
    2016, 3 (3):  201-206. 
    Abstract ( 209 )   PDF (3754KB) ( 120 )  
    The principle of AVEVA remote collaborative technology is described. An application named PDMS management program is developed to treat with the defects of AVEVA remote collaborative technology. Two plans are studied, aiming at the application of AVEVA remote collaborative technology in a single project and in multiple projects, respectively. For the multi-project plan, the PDMS management program is applied successfully. Research results show that the AVEVA remote collaborative technology can effectively achieve the goal of real-time synchronization design of several design centers in the same three-dimensional (3D) model. The developed PDMS management program can save software sources and achieve the goal of real-time updating multi-project design data steadily.
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