... subsea system amplitude coefficient downward energy propagation spectra propagation upstream oil & gas oscillation current profile inertial frequency near-inertial current frequency variability pycnocline near-inertial oscillation near-inertial wave mad dog rtmm mode shape...

...) between eddy activity and intensity of inertial oscillations within the water column. We present data collected from ADCPs at several locations in the northern Gulf of Mexico along with an extensive network of drifting buoys in correlation with daily frontal analyses and a comparison with historical...

... The hydrodynamic drag and added mass of a blowout preventer (BOP stack) influences the resonant amplitudes and frequencies of a drilling riser system during connected (low amplitude oscillations) and disconnected (high amplitude oscillation) conditions. The prediction of hydrodynamic loads...

... mode derivative turret centre thruster subsea system floating production system aft thruster oscillation blue line vessel centre turret upstream oil & gas stiffness equilibrium fpso controller artificial intelligence stability eigenmode sway force forward thruster...

... system roll angle riser balcony riser system offshore technology conference inertia matrix spread moored fpso coupling roll motion fpso roll motion riser oscillation fpso upstream oil & gas roll stiffness stiffness displacement inertia flexible riser Bigot F. , Seah...

... hyperactivity oscillation anomaly buoy mexico eddy intensity loop current interaction separation wind speed gulf operation current intensity offshore technology conference caribbean time period Grossman , I. and Klotzbach , P.J. ( 2009 ), "A Review of North Atlantic Modes...

... range water column vangriesheim continental slope upstream oil & gas alongshore current offshore technology conference fluctuation oscillation offshore angola sanha ctw frequency range reservoir characterization hycom khz adcp time series angola biweekly oscillation...

.... Some of the identified events were caused by strong inertial oscillations with multiple speed peaks confined to a relatively narrow layer centered around 500m. Mid-water jets have been identified in previous work [2] but this new analysis provides far more cases and suggests that the jets have an upper...

... renewable energy social responsibility takeoff turbine water current flow-induced oscillation sustainable development oscillation amplitude sustainability instability proceedings efficiency transmission system torsional power takeoff flat plate international conference...

... Abstract This paper discusses computational fluid dynamic (CFD) analysis that has been applied to a blowout preventor (BOP) stack undergoing vertical oscillation during deployment from a floating drilling rig. CFD analysis has been used to determine added mass and to show that the drag...

... technology conference furrow reservoir characterization current measurement furrow field upstream oil & gas oscillation adcp cascade variability measurement program OTC 20753 Bottom Current Measurements at GoM Furrows for the Cascade and Chinook Fields Development Jose Antonio M.Lima, Eric...

... to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of OTC copyright. Abstract Inertial currents (also known as inertial oscillations or inertial waves) are a well known ocean phenomenon commonly...

... strake case oscillation configuration cylinder upstream oil & gas contact load hydrodynamic test lift coefficient installation roller test strake drag coefficient otc 19289 coefficient vertical oscillation bare pipe polyethylene strake reynolds number deformation pipe...

...-soil interaction. Improved methods are necessary to raise the reliabilityof these designs in marginal cases, enhancing the viability of offshorehydrocarbon developments in deep water. embedment lay process lay effect assessment penetrometer penetration oscillation touchdown point...

... instability gyration amplitude natural period diameter riser equation cylinder experiment oscillation rigid cylinder test vibration rotation onset flow speed analytical model cylinder rigid spring-mounted cylinder OTC 16342 Flutter Instability in Riser Fairings S. T. Slocum...

... accounts of severe high frequency oscillations during on-deck testing had been received. These accounts were sporadic and occurrence of the oscillations could not always be re-created. In-situ subsea data acquisition and testing was considered but considered impractical due to the shear cost of rig time...

... dynamic behavior sea state oscillation geostar recovery amplitude us government university ship operation upstream oil & gas head sea otc 14051 deployment water depth application space shuttle modus bs diagram bottom station observatory Copyright 2002, Offshore...

... of the oscillation from one half-cycle to the next. Analysis of the data did not reveal any pattern for the frequency jumps. The amplitude of displacement is also changing during the course of the time series. This out-of-plane displacement shows a distinct swell in amplitude corresponding to the maximum excitation...

... conditions, however, thecoupled system of floating structure and swinging load shows different linearand nonlinear phenomena: in-phase and anti-phase load oscillations mutually coupled tointerdependent transverse and angular resonance motions of the cranevessel subharmonic motions of the vessel due...

... upstream oil & gas drilling riser oscillation excitation calculation Copyright 1999, Offshore Technology Conference This paper was prepared for presentation at the 1999 Offshore Technology Conference held in Houston, Texas, 3 6 May 1999. This paper was selected for presentation by the OTC...