Study of subsea pipelines behavior with free spans under the effects of currents

• Grant number: 06/01036-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2006
• End date: July 31, 2007
• Field of knowledge: Engineering - Naval and Oceanic Engineering - Hydrodynamics of Ships and Ocean Systems
• Principal Investigator: Celso Kazuyuki Morooka
• Grantee: Annelise Yuiko Idehara
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Present work is motivated by the recent hydrocarbon discoveries placed at offshore deepwater depths. For this reason, new technically feasible and cost-effective solutions are demanded to extract petroleum from those hydrocarbon reservoirs. Present study regards underwater pipelines placed over an uneven seafloor in presence of sea currents acting on that portion of the pipeline with free spans. Therefore, dynamic loads can occur as a consequence the structure may oscillate in the same direction of current (in-line) and transverse directions. This dynamic response is mainly caused by current load, the drag and inertia effect mainly at in-line direction, and vortex induced vibration and lift effect mostly at transverse direction. The present work gives an introduction for fundamentals of involved hydrodynamics and pipeline behavior with free span. Numerical solution to the equation of pipeline dynamic behavior and analysis of results will be present.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

TRIGO, C. C. O.; MOROOKA, C. K.; ASME. MODEL TEST WITH A VERTICAL PIPE TO ELEVATE COLD SEA WATER. PROCEEDINGS OF THE ASME 38TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2019, VOL 7A, v. N/A, p. 7-pg., 2018-01-01. (06/01036-5, 15/50461-0)