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US tools boost isolation works on Canadian gas pipeline

25th September 2012

TDW technology helps complete subsea installation on Enbridge’s gas pipeline in Gulf of Mexico

US tools boost isolation works on Canadian gas pipeline
The pipeline is a 30-inch natural gas line which brings gas from the Mississippi Canyon region of the offshore Gulf of Mexico into Louisiana

A US pipeline and equipment services firm has used its tools to successfully complete isolation works on a gas pipeline in the Gulf of Mexico, it emerged on Monday.

TDW Offshore Services has completed a subsea pipeline pressure isolation operation in the Gulf of Mexico, the firm announced on Monday.

The isolation enabled the tie-in at a depth of 113 m of a piggable wye to the Mississippi Canyon gas pipeline, owned by Canadian energy firm Enbridge Inc.

The pipeline is a 30-inch natural gas line which brings gas from the Mississippi Canyon region of the offshore Gulf of Mexico into Louisiana.

The operation used two remote-controlled 30 inch SmartPlug dual module pressure isolation tools to isolate approximately 72.5 km of pipeline.

The tools provided double block isolation on the high pressure side of the tie-in location; a hydraulic locked barrier of the high pressure side for the divers installing the wye; and performed a leak test to verify integrity of the new wye after installation.

TDW also used its remotely-operated SmartTrack tracking and pressure monitoring system to monitor the locations of the SmartPlug tools as they travelled to their subsea set destinations. The SmartTrack system uses two-way, through-wall, electromagnetic communication between a transponder and a receiver to track tool progress.

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