... the rigid riser application in the first pre-salt oil production platforms, which designed initially to receive only flexible risers. The development of TiPT had been performed through a set of analysis encompassing: extreme load, wave fatigue load and pull–in loads. The results show the feasibility...

... Abstract In this paper, a methodology is proposed to use FPSO Fluminense motion-based criteria to establish the operational window for the disconnection and safe removal of a flexible riser with structural damages in parts of the tensile armour wires. A global model was established in Orcaflex...

... Abstract Due to significant levels of transversely imbalanced riser, topsides and structural loads, a conventional monohull FPSO with a large number of deep-water risers hung on one side is not optimal in terms of load carrying capacity, ballasting operation and cargo loading/offloading...

... Abstract The Vortex Induced Motion (VIM) response of multi-column semi-submersible floaters may have a significant impact on the predicted fatigue life of mooring and riser systems. Over the last decades physical model testing using Froude-scaled floater geometries has been the main method...

... conference subsea distribution hardware scr risk management installation execution model flowline subsea system contractor riser drill center development operator vito fp operation Introduction The Vito Development is located in the Gulf of Mexico in the Mississippi Canyon (MC) area...

... be reproduced when standalone models are introduced. In this study, a standalone LCO 2 carrier model and an integrated dynamic CCS model connecting the LCO 2 carrier, injection equipment, riser, pipeline, and wellbore were developed. The standalone LCO 2 carrier model predicts the behavior of a whole ship...

... Abstract Free-standing hybrid risers (FSHR) are well established in deepwater field developments in the oil & gas industry. The major advantages foreseen for the FSHR are the possibility of safely accelerate production ramp-up and requiring significantly reduced payloads at the Floating...

... Abstract A digital twin is proposed to quantify the loads and mitigate the risk of rupture during the recovery operation of a flexible riser with severe structural weakness (30% of broken wires in the outer tensile armor layer). The allowable axial tension is compared with the loads expected...

... Abstract As oil and gas exploration is moving to deeper waters, a key challenge is to design risers in harsh environments. Steel catenary risers (SCR) are cost-effective solutions that have been used in offshore developments due to their simplicity and robustness. However, stresses...

... Abstract The engineering assessment in this paper provides the recommendations for the minimum wall thickness selection of marine riser pipeline and their ability to allow the passage of in-line instrument scraper. The assessment was conducted considering two criteria: First, the minimum wall...

... Abstract While Steel Lazy Wave Risers (SLWRs) are an attractive riser system from wave fatigue perspective in deep waters, it has recently been found that they can be susceptible to fatigue from slugging. Slugging may occur under certain combination of gas and liquid rates for multiphase (oil...

.... The work performed covered the assessment of flexible risers, flowlines, umbilicals and rigid gas export line, comprising studies on operational history, simulations, in-loco special inspections (AUT, EMAT and Direct and Indirect flexible riser tensile armour inspections) and actual FPSO and risers...

... Abstract A literature review of experimental and computational hydrodynamic research is presented with the objective of highlighting the parameters that affect riser added mass coefficient (C a ) and drag coefficient (C d ). Typical riser analysis is conducted assuming constant values...

... is built, together with the underlying drilling system model and solution parameters, which uniquely include the effect of the marine riser restoring force. Integration with external data streams is presented, including vessel position and heading, riser tension, and environmental data (wind, wave...

... carried out in flexible riser systems and subsea layouts. The flexible risers, usually installed in lazy wave configurations at such water depths, were optimized reducing the total buoyancy necessary. For water injection and service lines, the buoyancy modules were completely removed, and thus the lines...

... Slugging causes cyclic loads and stresses on a riser segment due to local weight variations. In addition, global weight variations due to the integrated effect of the density variation between the sag and TDP also causes cyclic loads. Such cyclic loads from slugging cause fatigue of the riser...

... followed the experience and the track record of the large number of deepwater fields that were previously developed in Brazil, in the post-salt regions, and is based on satellite wells tied to the floating production platform by means of dedicated production and service risers (i.e. each well has dedicated...

... Deepwater large diameter riser design was identified early as a key technical area that would drive the execution success of the project. The riser selection (carbon steel, clad, or flexible) drives the procurement schedule and interfaces with the FPSO. Thus, selection of the riser to achieve...

...Active Learning of Hydrodynamic Database using the Intelligent Towing Tank Abstract Assessing the fatigue damage in marine risers due to vortex-induced vibrations (VIV) serves as a comprehensive example of using machine learning methods to derive assessment models of complex systems...

... in October of that year [ Kibbee, 1999 ]. Production from Morpeth concluded in 2018, and plans were made for abandonment to be complete in 2020. The Morpeth TLP is one of many aging GoM assets that has reached the end of its service life. For many such assets, minimizing costs during riser decommissioning...