Helping pipeline owners and operators improve system performance for greater profitability has been the goal of pigging technology pioneer TDW since 1943.
TDW manufactures one of the industry’s widest ranges of purpose-built pigs. This vast inventory includes cleaning, batching, gauging, liquids displacement, and specialty pigs, available in multiple diameters and designed to meet specific pipeline and product demands. Customization and configuration options ensure tailored solutions for even the most complex pipeline conditions.
Help selecting the most appropriate and efficient pig or scraper in order to achieve maintenance and integrity goals, reduce downtime, maximize throughput, and mitigate operational risk is available from the TDW subject matter experts.
Best used for: Cleaning to maintain line efficiency and control corrosion; batching operations to prevent product mixing and contamination in multi-product pipelines; gauging operations to prove pipeline roundness and help detect obstructions and defects; displacement of air ahead of hydrostatic testing and water after the test, as well as displacement of hydrocarbons prior to field repairs; recovery of natural gas liquids (NGLs); and application of corrosion inhibitors.
- Available for a wide range of pipeline diameters.
- Multi-use, bi-directional, and dual diameter capabilities available.
- Standard and custom configurations for maximum flexibility.
- Tough, long-lasting original components and replacement parts.
- Pigs can be combined to perform a broad variety of functions.
- What are some of the key reasons for pigging a pipeline? Pigging is used throughout the life of the pipeline, including:
- Construction – removing construction debris, hydrotesting, gauging.
- Operation – commission, cleaning, condensate/water removal, batching, application of inhibitors.
- Maintenance and repair – pre-inspection cleaning, isolation.
- Renovation and rehabilitation – chemical pigging, removal of contaminants, pre-product conversion cleaning, decommissioning, recommissioning.
- Are pigs for offshore pipeline applications different from those used onshore? Effective pigs can be provided for offshore systems but may require special design features. Generally, pigs used offshore must be able to accommodate very heavy wall pipe and large variations in wall thicknesses due to different design codes for platform and riser piping versus subsea mainline pipe. In addition, offshore applications often require extra-long pigs. TDW can help offshore and onshore operators select and deploy the appropriate pig for the purpose, pipeline, and product.