Collapse of offshore pipelines: Seminar proceedings
In order to transfer the results of research on collapse of offshore pipelines sponsored by the Pipeline Research Committee, the Offshore Supervisory Committee held a one-day seminar, on February 20, 1990. Participants included experts from academia, offshore service company representatives, and natural gas and oil companies with offshore interests. Offshore pipeline construction has some significant problems not found in land pipeline construction. Among these are laying pipe over a laybarge stinger with a significant unsupported span to bottom, laying pipe from a reel barge, or pulling pipe through a J-tube to connect to an offshore platform. The latter two applications result in the pipe undergoing significant plastic deformation during the installation process, which could lead to failure of the pipe. Another unique offshore loading is from the water itself which exerts external pressure on the line during construction and operations. This external pressure may cause the pipe to collapse. There are many cases underwater where significant spans occur, such as the unsupported span from a laybarge, where the lateral loads from weight or current are carried by a combination of tension and large deflections rather than bending moments. This structural behavior is not accounted for in most piping design and analysis computer programs. The approach to address these problems has been theoretical work, small-scale testing and large-scale testing to verify the theories and small-scale tests. The seminar included the progress in understanding pipe buckling phenomena from its beginnings to the five years of PRC-sponsored work involving small-scale tests. The final and main portion of the seminar was devoted to the transfer of offshore pipeline design guidelines.
- Research Organization:
- American Gas Association, Inc., Arlington, VA (United States). Pipeline Research Committee; Shell Development Co., Houston, TX (United States). Bellaire Research Center
- Sponsoring Organization:
- AGA; American Gas Association, Inc., Arlington, VA (United States)
- OSTI ID:
- 7093671
- Report Number(s):
- CONF-9002220--
- Country of Publication:
- United States
- Language:
- English
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032000* -- Natural Gas-- Transport
Handling
& Storage
CONDUCTOR DEVICES
CONNECTORS
DEFORMATION
DESIGN
DOCUMENT TYPES
ELECTRICAL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FABRICATION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
INSTALLATION
JOINING
JOINTS
LEVELS
MONITORING
NATURAL GAS
OFFSHORE OPERATIONS
PIPELINES
PIPES
PROCEEDINGS
STABILITY
TESTING
UNDERWATER
WELDED JOINTS
WELDING