An installation system of deepwater risers by an S-lay vessel

Duan, Menglan; Wang, Yi; Estefen, Segen F.; He, Ning; Li, Lina; Chen, Bangmin

doi:10.1007/s13344-011-0012-y

Cited by 15 publications

(12 citation statements)

References 13 publications

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“…Combined with the relations (Eqs. (14)- (16)) and boundary conditions (Eqs. (7)-(10)), the riser configuration and associated mechanical parameters can be derived for the state SLWR3.…”

Section: Tension Transfer Stagementioning

confidence: 99%

“…14-16 show the configurations, tension and bending moment distributions for SLWR during recovery stage (steps [13][14][15][16][17][18][19]. The lower section extends, the TDP moves left, and the finial position of the TDP point is still at the right side of that at initial state SLWR1.…”

Section: Configurations and Associated Mechanical Parametersmentioning

confidence: 99%

“…Duan and Chen [15] performed a comprehensive study of a mechanical model for deepwater SCR transfer process during installation. Duan and Wang [16] developed a new lifting system device for SCR installation used on S-lay vessels and proposed a corresponding installation method.…”

Section: Introductionmentioning

confidence: 99%

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A nonlinear mechanical model for deepwater steel lazy-wave riser transfer process during installation

Wang

Duan²,

Wang³

et al. 2015

Applied Ocean Research

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“…Combined with the relations (Eqs. (14)- (16)) and boundary conditions (Eqs. (7)-(10)), the riser configuration and associated mechanical parameters can be derived for the state SLWR3.…”

Section: Tension Transfer Stagementioning

confidence: 99%

Section: Configurations and Associated Mechanical Parametersmentioning

confidence: 99%

See 1 more Smart Citation

A nonlinear mechanical model for deepwater steel lazy-wave riser transfer process during installation

Wang

Duan²,

Wang³

et al. 2015

Applied Ocean Research

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“…Though the vessel with an S-Lay method in laying oil and gas pipelines has so many capacities, it cannot be used to install risers at first design. Hence, a new installation system of deep-water riser whose main structure is Riser Support was designed by Duan et al (2011). Other subsidiary structures, such as pipeline end termination (PLET), pipeline end manifold (PLEM) and inline sled (ILS) and so on, can also be installed by the support for submarine pipelines; see Duan (2010) for details.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on dynamic model testing of a deep-water Riser Support by truncated hybrid method

Guo

Duan

Wang

et al. 2013

Ships and Offshore Structures

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A device Riser Support is designed for Chinese S-Lay vessel 'HYSY-201'. The device is used to install risers as well as subsidiary structures, such as pipeline end termination (PLET), pipeline end manifold (PLEM), in-line sled (ILS) and so on for submarine pipelines. The paper mainly elaborates the finite element analysis and dynamic experiment of the deep-water Riser Support based on a truncated hybrid model. To test the mechanical property and verify the reliability of the Riser Support, some dynamic tests with the scale 1:10 are done to simulate the installation process of risers in the South China Sea. A truncation method is used to solve the problem that 3000 m riser model is still too long though it is reduced to one-tenth of the original size. Six degrees of freedom platform (SDFP) is used to simulate the movement of 'HYSY-201' vessel while a boundary control system (BCS) is also used to control and simulate the motion state of cut-off point of the riser model. SDFP and BCS together make the model test more accurate and reliable. Testing results show that stress values based on 24 kinds of typical working conditions and calculated values are accordant in the range of allowable inaccuracy, but the small error is considered reasonable because of the difference between virtual model and scaled reality model. Then, truncated hybrid method is verified to be very useful in simplifying models during the research of large-size thin tube, rod-shaped or linear model experiment, and especially the 3000 m truncated dynamic hybrid riser model experiment is a good example.

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“…García-Palacios et al (2009) established a nonlinear model taking into account the axial load in the pipe, external loads, and flooded inner length to determine displacements, strains, and stresses of a flexible pipeline during the laying process in shallow water. Duan et al (2011) designed a new lifting device to achieve the installation requirements of deepwater risers in association with HYSY 201 S-lay vessel. Gong et al (2009) conducted the analysis of effects of different pipe-laying parameters on the axial tension and ultimate laying water depth for deepwater S-lay pipeline.…”

Section: Introductionmentioning

confidence: 99%

Configuration analysis of deepwater S-lay pipeline

Gong

Chen

et al. 2011

China Ocean Eng

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The safety of offshore pipeline has drawn a great deal of attention during deepwater installation due to the combined actions of high external pressure, axial tension, and bending moment. Meanwhile, the pipeline configuration has a remarkable effect on the structural behaviour of the tube. The special studies focus on the deepwater S-lay technique in the present paper. The stiffened catenary theory is applied to establish the static equilibrium governing differential equation of a pipe element, and the solution equations of the total pipeline configuration from a lay-barge over a stinger to the seabed are derived. The numerical iteration method for solving pipeline configuration is described in detail, and the corresponding program is developed to conduct the analysis of effects of various parameters such as laying water depth, pipe diameter, thickness of concrete weighted coating layer, stinger length, control strain, and axial tension on pipeline configuration. The results show that the laying water depth, the submerged weight of the pipe, and the axial tension are the critical factors influencing pipeline configuration. In addition, geometrical parameters of the stinger such as length, radius, and shape have an important effect on the pipe-laying capacity of the vessel. The validity of the program is further verified by means of a comparison with results obtained from the commercial finite element software OFFPIPE.

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An installation system of deepwater risers by an S-lay vessel

Cited by 15 publications

References 13 publications

A nonlinear mechanical model for deepwater steel lazy-wave riser transfer process during installation

A nonlinear mechanical model for deepwater steel lazy-wave riser transfer process during installation

Experimental investigation on dynamic model testing of a deep-water Riser Support by truncated hybrid method

Configuration analysis of deepwater S-lay pipeline

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