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Article
Lateral buckling of non-trenched high temperature pipelines with pipelay imperfections
An analysis method for the buckling process of a pipe section with a random pipelay imperfection is proposed. Four basic lateral modes, acquired by finite-element (FE) eigenvalue buckling analysis, are combine...
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Article
Dynamics of risers for earthquake resistant designs
It is well known that no criterion about seismic design for risers is available, and relevant research has not been reported. A comprehensive study of riser dynamics during earthquakes is performed in this pap...
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Article
Model test investigation on an innovative lifting system for deepwater riser installation
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 d...
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Article
In-service shear check of heated cased insulated flowlines
Starting friction would be induced and preserved somewhere along the seabed route of cased insulated flowlines (CIF) when the pipe carries service loads. The axial pipe-soil interaction can be divided into thr...
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Article
An experimental investigation by towing tank on VIV of a long flexible cylinder for deepwater riser application
In this study, the dynamic response of a vertical flexible cylinder vibrating at low mode numbers with combined x−y motion was investigated in a towing tank. The uniform flow was simulated by towing the flexible ...
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Article
Reliability analysis of marine risers with narrow and long corrosion defects under combined loads
A marine riser, one of the most important components of offshore oil/gas transportation, needs to be designed to eliminate the risks caused by complex ocean environments, platform displacement and internal cor...
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Article
Metal sealing performance of subsea X-tree wellhead connector sealer
The metal sealing performance of subsea X-tree wellhead connectors is crucial for the safety and reliability of subsea X-trees. In order to establish the theoretical relation between metal sealing ring’s conta...
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Article
Integral transform solution for fluid force investigation of a flexible circular cylinder subject to vortex-induced vibrations
In the present paper, fluid force distribution of a long flexible cylinder subject to vortex-induced vibrations is investigated by Generalized Integral Transform Technique (GITT). This method is using experime...
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Article
Dynamic response of pipes conveying two-phase flow based on Timoshenko beam model
The dynamic behavior of pipes subjected to internal gas–liquid two-phase flow has been studied using the Timoshenko beam model and the slip-ratio factor model. In this paper, the governing equations were carri...
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Article
Study of Drillability Evaluation in Deep Formations Using the Kriging Interpolation Method
During development of production processes in deep formations by means of wells placed in lower productive intervals, it is specifically such formations that have gradually become the major challenge in oil pr...
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Article
Analytical model for transfer process of deepwater steel lazy-wave riser on elastic seabed
The steel lazy-wave riser (SLWR) is considered as an appropriate approach for deepwater riser installation due to its advantages in service performance. However, the introduction of buoyancy modules system bri...
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Article
An improved model for VIV fatigue life prediction of slender marine structures in time-varying flows
The objective of this study is to propose an improved model to evaluate the fatigue life of slender marine structures with high efficiency and accuracy. We establish two Weibull functions to represent the prob...
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Article
In-plane and out-of-plane dynamics of curved pipes conveying fluid by integral transform method
This study presents a new solution for the dynamic behavior of in-plane and out-of-plane motion of a curved pipe conveying fluid, using the generalized integral transform technique (GITT). The system of sixth-...
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Living Reference Work Entry In depth
Installation and Decommissioning
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Living Reference Work Entry In depth
Design of Pipelines and Risers
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Living Reference Work Entry In depth
Dynamic Behavior and Fatigue
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Article
Open AccessBuckling Properties of a Subsea Function Chamber for Oil/Gas Processing in Deep Waters
Due to the complexity of installations and connections of subsea production equipment and the massive structures involved in a challenging environment, the failure of subsea production equipment could induce e...
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Chapter
Buckle Propagation of Sandwich Pipes
Buckle propagation of local collapse appearing in the damaged pipes is one of the failure modes that are of particular interest for deepwater application. The local collapse can propagate along the pipeline fo...
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Chapter
Pipes Conveying Vertical Slug Flow
In this chapter, a fluid-structural model for analyzing the dynamic behavior of riser vibration subjected to simultaneous internal gas–liquid two-phase flow and external marine current is proposed. Slug flow r...
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Chapter
Steady-State Thermal Analysis
In this chapter, we first present a global heat balance analysis of typical pipelines for deepwater oil and gas production and show that active heating is necessary for long pipelines due to technical limitati...
