... backbone curve upstream oil & gas midstream oil & gas unit length pipe soil suction model interaction model penetration breakout displacement dynamic soil stiffness displacement equation stiffness displacement dynamic soil stiffness soil stiffness test data pipe soil...

... per unit length of the riser to mean tension. It is primarily the decrease in vortex shedding frequency due to the larger diameter that accounts for any reduction in fatigue damage rate. Unfortunately, the benefits gained from the addition of buoyancy may be undone, by the typical increase in mass...

... dissertation. Experimental data is provided to support the conclusions regarding hydrodynamic damping. unit length flexible cylinder contribution cylinder cable vibration experiment vandiver prediction natural frequency conclusion spectra frequency diameter upstream oil & gas modal...

... of principal curvature e n , e b is denoted f. See Fig. 2. procedure equation offshore pipeline upper end point boundary value problem equilibrium equation otc 5297 unit length calculation boundary value problem equilibrium curve plane rigid stinger pedersen curvature stinger static...

...-carpenter number stability inertial force wave force parameter midstream oil & gas force coefficient horizontal force wave force coefficient seepage force pipeline potential flow theory offshore pipeline wave-induced force unit length magnitude submarine pipeline OTe 5295 Wave Forces...

... a key role in response prediction. However, the dependence of the response parameter and therefore the response amplitude on the ratio of cylinder mass per unit length to the displaced fluid mass per unit length is shown to be widely misunderstood. Under locking conditions, damping is important...

.... expression drag coefficient spar model diameter bundle unit length layvessel stiffness mathematical model midstream oil & gas tank model maneuvering pipe string increment cheatham equation offshore pipeline verner vector OTe 4666 Predicting Motions ~~L!-o~g Towed Pipe ~tdnQ~- by E.A...

... and are discussed in the end. GOVERNING EQUATIONS We consider a cable whose unstretched area is A o diameter d o mass per unit length m o and Young's modulus E. Let s denote the unstretched Lagrangian coordinate from an arbitrary origin (usually the bottom end of the cable) to a material point of the cable...

... shutdown longitudinal movement corrosion coating operation longitudinal force submarine pipeline close offshore pipeline unit length deformation longitudinal stress coating resistance upstream oil & gas coefficient movement occur pipeline platform friction concrete coating decay...

... water depth coefficient dimensionless force unit length inertia coefficient calculation OTC 3072 DRAG AND INERTIA COEFFICIENTS FOR PARTIALLY-BURIED OFFSHORE PIPELINES by Michael E. Parker, Texas A &MUniversity, Exxon Co. U.S.A.; and John B. Herbich, Texas A &MUniversity ABSTRACT This model study...

... in a horizontal plane parallel to the sea bed. tanker drag force sinh cosljl designwave vector coefficient unit length morison lagrange otc 2798 fluid velocity vector normal force design wave dynamic response articulated tower equation orthogonal wave propagation OTC 2798 RESPONSE...

... ABSTRACT For a pipeline of constant rigidity, horizontal tension, and submerged weight per unit length, there is a maximum value that the maximum sag-bend moment attains as the distance from the free end to the sea floor increases. This paper presents the results of a parametric study...

... depth configuration drag force dynamic response dynamic behavior riser unit length variation equation bottom angle upstream oil & gas analysis model deflection wave height top tension buoyancy OFFSHORE TECHNOLOGY CONFERENCE 6200 North Central Expressway Dallas, Texas 75206 PAPER...

... bare cable, for which the hydrodynamic forces are locally of the coplanar type. unit length directionwith depth coordinate system engineer hydrodynamic force variation cable cable scope current profile moored cable system configuration cable system cable coordinate system...

... between parameters determined. These relations enable direct evaluation of the maximum horizontal and vertical components of wave force per unit length of pipeline from known pertinent quantities, for shallow water wave conditions. TEXT Although a submerged ocean pipeline of large diameter is very...

... incidentwave unit length reservoir characterization wave force coefficient engineer horizontal force ii 0 submerged structure theory irregular wave upstream oil & gas equation cylindermodel load cell tank dimensionless force us government experiment recorder half cylindermodel...

... PROCEDURE The laborious and repetitive nature of the finite-element procedure makes it necessary to use a computer. stinger curvature stinger curvature specific gravity pipe procedure gravity deep water wall thickness unit length offshore pipeline axis stinger geometry curve upstream...