Multiple Slope Structure (4,325,655)
Inventors: R. T. Weiss, H. O. Jahns. Issued April 20, 1982 in United States
Offshore Arctic Structure (1,139,114)
Inventors: R. T. Weiss. Issued January 11, 1983 in Canada
Arctic Offshore Structure (4,397,586)
Inventors: R. T. Weiss. Issued August 09, 1983 in United States
Inspection and Assessment of Offshore Pipelines in the Bay of Campeche
Published by (Proc. of the Offshore Technology Conference, OTC 8499)
Authors: V. M. Valdes, Y. O. Bayazitoglu, R. T. Weiss, O. L. Valle and T. Hernández. Published May 05, 1997
In October 1995 Hurricane Roxanne damaged offshore installations in the Bay of Campeche. To assess the condition of significant pipelines, a major inspection program involving over 450 km of pipelines was conducted to survey the location of the pipelines and to determine their relationship to the seabed. Lines not fully buried were visually inspected by multiple video cameras. The results of the inspections were presented on charts, data files and video tapes.
These results were utilized along with existing design information to assess the condition of the pipelines and to identify locations where remedial work was needed. The hydrodynamic stability of all exposed pipelines was analyzed to determine the need for pipeline burial. Damage to the pipes, weight coatings and corrosion protection systems was analyzed on a case-by-case basis.
The paper will review the pipeline inspection objectives, procedures, and results. Evaluation procedures using this information will be described along with a summary of the conclusions of the study.
This is one of the largest and most comprehensive evaluations of existing pipelines ever conducted worldwide and provides a model for future evaluations of aging or damaged pipelines. The improved location and condition information provide a sound basis for appropriate maintenance and operational planning for these lines.