Subsea pipeline developments advance operations, integrity

The proliferation of offshore pipelines has increased the premium on being able to effectively monitor their operations and intervene when necessary. At the same time, the competitiveness and potential volatility of oil and gas commodity markets make it important that any intervention have the minimum possible effect. Recent developments in subsea pipeline materials, monitoring, and maintenance technology are helping meet these requirements.T.D. Williamson SA last month announced a successful hot-tap operation for tie-in of Ettrick field's natural gas export line, allowing gas to move from UK Central North Sea blocks 20/2a and 20/3a 120 km to the ExxonMobil-operated Scottish Area Gas Evac...

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