- Meet our experts at the AMI Oil & Gas Polymer Engineering event, June 6-7, 2017 at the Hilton Houston Post Oak in Houston, Texas.
- Learn more about the "Influence of foam morphology on end of life U-value for subsea foamed polypropylene pipeline insulation" .
The two-day program examines the latest developments in the use of non-metallic materials in the harsh conditions of oil and gas drilling and transportation, including new challenges arising in unconventional gas reservoirs.
WEDNESDAY, JUNE 7, 2017 AT 11:10 A.M.
"Influence of foam morphology on end of life U-value for subsea foamed polypropylene pipeline insulation" by Shawcor Research Manager, Jan Peder Hegdal.
"Polypropylene foam (PP foam) is the most common insulation used for subsea flowlines today and has been in use since the early 1990s. The thickness of insulation required for a specific pipeline project is calculated from the thermal conductivity of the foam and other layers. Shawcor's design process includes a calculation of the compression of the foam over the lifetime of the pipeline (typically 30 years) to make sure that the U-value requirement is met end of life when the insulation is at maximum compression.
A PP foam with a high level of compression will have to be applied thicker, thus increasing the cost of the product. Insulation compression is a particularly important consideration for projects at higher water depths and operating temperatures (typically > 300 m and > 100 degC). Shawcor has over the years of supplying PP foam to many flowline installations acquired a large database on elastic and creep compression properties of polypropylene foam, and have also initiated a research program to understand how the foam compression correlates with pressure, temperature and foam properties.
Shawcor's design process: calculation of the compression of the foam over the lifetime of the pipeline.
While foam mass density is the most important parameter determining the thermal and compressing properties of a foam, the research has shown that other parts of the foam morphology such as cell size, cell orientation and cell aspect ratio can be of equal importance for project cost and execution. Part of this research has been published, or is about to be published.
This paper will illustrate the importance of good foam morphology by presenting tri-axial compression data, micrographs, morphological descriptions through image segmentation of foam cells and high resolution compression measurements performed in a series of Simulated Service Tests to compare the difference between pipes produced with a good and a bad foam morphology. Finally, a case study highlighting the difference in project cost for the bad and good foam is presented." Download the presentation.
ABOUT THE CONFERENCE
AMI's third international forum for oil and gas operators, contractors, equipment manufacturers, researchers and industry suppliers, Oil & Gas Polymer Engineering Texas 2017, will take place June 6-7 at the Hilton Houston Post Oak. This two-day program will examine the latest developments in the use of non-metallic materials in the harsh conditions of oil and gas drilling and transportation, including new challenges arising in unconventional gas reservoirs. Learn more.
Oil & Gas Polymer Engineering Texas 2017 will provide a networking forum for materials engineers and expert researchers to share case studies, learn from past experience and look to the future with the latest technologies.