Changing the services, reversing flow, or re-purposing a pipeline is a major undertaking that can involve many activities including cleaning, inspection (for integrity), repairing, making modifications, and prime moving equipment (e.g., pumps, compressors etc.).
TDW services enable Offshore Pipeline operators to:
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Efficient, effective, and easy to launch and retrieve, pigs are the preferred tools for a variety of pipeline maintenance and integrity activities related to changes in service.
From cleaning and gauging to liquids displacement and preparation for pre-inline inspection (ILI), TDW can help Offshore Pipeline operators select and deploy the appropriate pig for the purpose, pipeline, and product.
Pigs for cleaning and pre-ILI preparation:
Pigs for gauging deformation:
Pigs for liquids displacement:
Technical assistance is available from TDW subject matter experts for special circumstances or if the path to a solution requires consultation.
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TDW offers safe, proven hot tapping and plugging (HT&P) solutions for the Offshore Pipeline market. When pipeline owners and operators need to expand their lines, make connections and/or tie-ins, launch new services, or upgrade their capacity, the TDW team of experienced technicians can help.
The HT&P process incorporates a high pressure pipeline fitting, valve, tapping machine and isolation equipment – all working together to provide a safe and proven isolation solution. Once the area of pipeline that requires work has been safely isolated and evacuated, the line modification can be performed.
The full suite of isolation solutions offered by TDW plays a critical role in this process. The TDW STOPPLE® Train isolation system, for example, uses double block and bleed technology to help increase efficiency and safety during pipeline modification. The system – which is able to create a double block and bleed seal through a single fitting – reduces costs associated with fittings, valves, welding, and inspection services. The bleed port affixed on the line ensures that any product that bypasses the first seal is captured and evacuated through the bleed port, which creates a safe zone in high-consequence areas.
Whether operators are purchasing equipment to perform their own HT&P jobs or turning to TDW to execute the service, they can rely on the TDW line of equipment and consumables. The Subsea 1200RC tapping machine, for example, is a topside-driven hot tap machine that can be safely operated down to a depth of 3,000 meters (9842.5 feet). The machine has proven to be a highly reliable shallow and deep-water solution.
TDW can also partner with operators before the work begins, providing consulting services to help them make optimum use of TDW products and services. TDW application engineers are recognized industry experts, ready to assist operators through each project phase – from start to finish.