Byron Energy Ltd.’s South Marsh Island Block 58 and 59 oil and natural gas pipeline installation has been completed offshore Louisiana by Chet Morrison Contractors LLC.
Morrison installed 11.5 miles of 3-, 4-, 6-, and 8-in. OD pipeline in water depths of 140 ft. Installation included burial, risers, tie-ins, mitigation of crossings, pigging, hydrostatic testing, and commissioning. Morrison’s CM-15 lay barge completed installation.
The company coordinated with export pipeline operators to install hot tap tie-ins to their transmission lines. This was performed using diving support vessel (DSV) Kelly Morrison, while DSV Joanne Morrison provided both saturation and surface diving support for riser clamp, pipeline tie-in, and various dive operations.
Byron Energy earlier this year installed its nine-slot South Marsh Island 58 G (SM58 G) production platform. SM58 G has a designed production capacity of 8,000 b/d of oil and 80 MMcfd of gas (OGJ Online, June 11, 2020).