Subsea Pipeline Crossings in the Cantarell Field, Bay of Campeche, Mexico

摘要

Approximately fifty new submarine pipelines are currently being added to the eighty existing pipelines within the Cantarelly Field. When all pipelines are complete, there will be approximatley two hundred new pipeline crossings. The existing pipelines, many of which are exposed on the seabed, must continue in service during new pipeline crossing installatioin. As the new pipelines are required to be buried with 1m cover, the perferred crossing method reqjired lowering the existing pipeline into the seabed. This paper reviews the design approach, crossing types selected and construction methods for safely crossing the existing operating pipelines. with limited as-buklt information availalbe, on site surveys, conservative assumptions and reverse engineering were required.