Browse Items (78 total)

This report examines a novel methodology for approximate prediction of the on-bottom kinematics in shallow waters and shore approach regions. The method involves simulation of generic shallow water scenarios in the Danish Hydraulic Institute MIKE…

The primary aims of the study were to:

· review the existing scene describing the equipment, methods, and the vendors active at the present time. This is presented in detail in the report and is intended to provide a ready reference for PRC…

A literature review identifying references for evaluating the hydrodynamic forces on offshore pipelines.

Objectives of this work include:



(1) The development of finite element computer program(s) for pipeline dynamic analysis which, coupled with the wave simulation programs developed in Phase I of the Project, will simulate efficiently the…

Describes the computer program SPAN which computes the nonlinear transient response of a submarine pipeline, in contact with the ocean floor, to wave and current excitation. The dynamic response of a pipeline to impact loads, such as loads from trawl…

Describes the sensor systems used to gather subsea boundary layer ocean current behavior. Includes the description of gathering two data sets: offshore California and Washington.

Describes calculation methods used for an on-bottom stability analysis model.

High-quality bottom boundary layer measurements from the CODE site are

described. Bottom tripod velocity measurements and supporting data typical of

everyday spring and summer conditions and during a winter storm are analyzed to obtain both…

The development of an offshore pipeline stability model that includes combined wave and current interaction, moveable bed effects, stratification due to temperature and salinity, stratification due to suspended sediment, and planetary rotation.

This report discusses the results of a testing program designed to simulate the operational conditions imposed on a J-lay installed, 13%" subsea pipeline assembled with mechanical connections. The program objective was to gain an understanding of the…