Submarine pipeline on-bottom stability. Volume 1: Analysis and design guidelines

Technical Report · Tue Dec 01 04:00:00 EST 1998

OSTI ID:325703

The state-of-the-art in pipeline stability design has been changing very rapidly recent. The physics governing on-bottom stability are much better understood now than they were eight years. This is due largely because of research and large scale model tests sponsored by PRCI. Analysis tools utilizing this new knowledge have been developed. These tools provide the design engineer with a rational approach have been developed. These tools provide the design engineer with a rational approach for weight coating design, which he can use with confidence because the tools have been developed based on full scale and near full scale model tests. These tools represent the state-of-the-art in stability design and model the complex behavior of pipes subjected to both wave and current loads. These include: hydrodynamic forces which account for the effect of the wake (generated by flow over the pipe) washing back and forth over the pipe in oscillatory flow; and the embedment (digging) which occurs as a pipe resting on the seabed is exposed to oscillatory loadings and small oscillatory deflections. This report has been developed as a reference handbook for use in on-bottom pipeline stability analysis It consists of two volumes. Volume one is devoted descriptions of the various aspects of the problem: the pipeline design process; ocean physics, wave mechanics, hydrodynamic forces, and meteorological data determination; geotechnical data collection and soil mechanics; and stability design procedures. Volume two describes, lists, and illustrates the analysis software. Diskettes containing the software and examples of the software are also included in Volume two.

• Research Organization: Brown and Root Energy Services, Houston, TX (United States)
• Sponsoring Organization: American Gas Association, Inc., Arlington, VA (United States)
• OSTI ID: 325703
• Report Number(s): AGA--99001942; CNN: Contract PR-178-9731
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
COMPUTER-AIDED DESIGN
DYNAMIC LOADS
NATURAL GAS
PIPELINES
STRESS ANALYSIS
UNDERWATER FACILITIES