...ABSTRACT ABSTRACT Steel catenary risers (SCRs) are preferred solution for deepwater application, however their fatigue design at touch down zone (TDZ) is challenging. With uncertainties of SCRs fatigue usually a larger safety factor is used in practice. In this work, the significance...

... of SCRs in the touch down zone (TDZ). INTRODUCTION Steel catenary risers (SCRs) have become the first choice for deep sea oil and gas development due to their high temperature and pressure resistance, relatively low cost and ease of production and installation. SCRs have a unique structure style...

... that the confounding results indicated by the previous research studies on the catenary pipeline or steel catenary riser (SCR) in the TDZ are due to different geotechnical parameters imposed with the soil model. The main benefit of employing a reliability-based fatigue analysis framework is to increase the confidence...

... ABSTRACT The steel catenary riser (SCR) is widely used to transport oil and gas product from the seabed to platform. The touchdown zone (TDZ) is an important part to connect the riser and pipeline. Its movement and deformation is complicated under the environment loadings. Many research...

... ABSTRACT Steel catenary risers (SCRs) are commonly used to connect subsea pipelines to deep water floating or fixed oil and gas production platforms. The behavior of SCR at touch down zone (TDZ) is critical for both local and global platform design. This paper reported the preliminary results...

... risers such as steel catenary riser (SCR) and steel lazy wave riser (SLWR) is potential solution for deep- water production systems (Basim et al. 2001). An important issues for the SCR systems is the fatigue damage due to wave, current and vessel motion. Despite of the waves and current induced dynamic...

... a minimum amount of the attachments that sufficiently suppress the vibration. out-of-plane dynamic equation control gain matrix magnitude out-of-plane component curvature diagonal element configuration steel catenary riser attachment vibration riser pipe cost function ratio distribution...

... Abstract Design of a steel catenary riser (SCR) requires the use of specialized connection hardware at the floater hang-off to accommodate the high bending moments produced by vessel motion. Strength and fatigue reliability of this connection hardware is imperative, especially for high...

... Abstract In this paper, the structural performance of deepwater lazy-wave steel catenary risers (LWSCRs) connected to a FPSO is investigated by using hull/mooring/riser coupled dynamic analysis program. Conventional deepwater steel catenary risers (SCRs)connected to the same FPSO hull exhibit...

... ABSTRACT Steel Catenary Risers (SCRs) became the preferred riser systems with the development of deepwater oil and gas exploration. A new model for the dynamic analysis of SCRs is proposed in the paper, the rigid motion, which is the rigid rotation about the axis from the hanging point...

... ABSTRACT: Recent publications believe that sophisticated non-linear hysteretic seabed interaction models can provide a consistent way of trench modeling beneath the riser to study its impact on fatigue performance of steel catenary risers, a question with diverging answers in the literature...

... ABSTRACT: Estimation of the fatigue damage in the touchdown area of steel catenary risers is a time consuming process with hard computational efforts. The process includes applying various sea states on the system capturing the history of Von Mises stress. A quick approximation of the fatigue...

... ABSTRACT: Steel catenary risers (SCRs) are one of the most popular and cost effective types of risers for deep water field developments. There are different complex issues for engineering of riser systems, with fatigue design, particularly in the touch down area, one of the most challenging...

... degradation of soil stiffness, as shown by full-scale experimental testing (Bridge and Willis, 2002; Bridge et al., 2004). seafloor soil resistance trench deflection interaction steel catenary riser pipe degradation loading stiffness riser seafloor interaction riser pipe uplift upstream...

... The influence of steel catenary risers on the first order motions of a semi submersible Fons A. Huijs Marine Structure Consultants (MSC) b.v. Schiedam, The Netherlands ABSTRACT A frequency domain method to determine the influence of steel catenary risers (SCR) on the first order motions of a semi...

... The influence of the soil at touch-down-point (TDP) for steel catenary riser (SCR) design is of paramount importance because it can control the feasibility of the SCR option as a possible deepwater riser solution. Previous analyses suggest that fatigue responses are significantly influenced...

... Steel Catenary Risers (SCR) are critical dynamic structures with a complex fatigue response. The prime fatigue contributors are vortex induced vibration (VIV) and riser-seabed interaction. There is industry wide acceptance that a reasonable level of uncertainty exists with respect to the ability...

... ABSTRACT This paper describes a study on the application of analytical methods for evaluating the response of Steel Catenary Risers (SCR) subjected to dynamic loading. In the first part of the paper, equations of equilibrium are derived using a linear theory, based on the assumption of small...

... installation procedure permitting easy re-use. Benefits of the EDP s reduced motions to the riser system are also investigated. The EDP is shown to provide a cost-effective and reliable way to support top-tensioned risers (TTRs) and steel catenary risers (SCRs) for deepwater applications. Furthermore, the EDP...

... ABSTRACT This paper describes analytical methods that were developed to evaluate the response of Steel Catenary Risers (SCR) subjected to static loading such as current. In the first part of the paper, equations of equilibrium are derived using a linear theory, based on the assumption of small...