HOUSTON – Morrison has installed Byron Energy Ltd.’s South Marsh Island blocks 58 and 59 oil and gas sales pipelines in the Gulf of Mexico.
The 60,720-ft (18,507-m) pipeline installation campaign consisted of 3-in., 4-in., 6-in., and 8-in. pipelines in water depths of about 140 ft (43 m). It included burials, risers and tie-in fabrication and installations, crossing mitigation, and pigging, hydro testing, and commissioning of the pipelines.
The Byron pipeline installation presented a unique opportunity for the triple lay of a portion of the overall pipelay on the project, according to the company.
Morrison’s pipeline lay barge CM-15 performed the pipelay installations and bury operations. Its DSV Kelly Morrison installed hot tap tie-in on transmission lines, while the DSV Joanne Morrison provided both saturation and surface diving support for the riser clamp, pipeline tie-ins and various dive operations.
This year the company has laid more than 5.5 million ft (1.6 million m) of pipe in the Gulf of Mexico.