Our nation’s pipeline services companies may well be the unsung heroes of the midstream industry. As our network of oil and gas lines continues to grow at an unprecedented rate, these pipeline soldiers stand on the front lines to ensure energy continues to flow uninterrupted during critical maintenance, repairs, inspections and system expansions. Perhaps no other name better defines pipeline integrity and performance than Tulsa, Okla.-based T.D. Williamson. With locations in every nation except for the continent of Antarctica, TDW continues to engineer and innovate the equipment, processes and technologies that keep pipelines operating safely and reliably.

T. D. Williamson

T.D. Williamson is the world’s most recognized name in pipeline equipment and services. TDW delivers safe integrity solutions for onshore and offshore applications. Our experts provide hot tapping and plugging, pipeline cleaning, geometry and MFL inspection, pigging, and non-tethered plugging pig technology services for any pressurized pipeline system, anywhere in the world.


A cursory glance at TDW’s milestones and achievements over 10 decades offers a rich study in the storied past and present of our oil and gas industry. Now commemorating 100 years of business, the company holds title to a number of pioneering feats that have made it an oilfield brand name. What began as Petroleum Electric Company in 1920 with a Eureka concept for a cup-shaped rubber element for pipeline-cleaning tools, TDW would go on to develop the pipeline pig little more than 20 years later. This, during construction of the War Emergency Pipeline System during WWII, and the need to clean the large-diameter piping system to prevent a shutdown.

Over time, TDW would build upon its product line and legacy by moving into pipeline equipment manufacturing, including the first pipeline tapping machine in 1950. When a customer in 1962 looked to the company for an underwater tap and tie-in in the Gulf of Mexico, TDW used 12 divers working around the clock to set the sleeve, make the tap, and tie in the loop 130 miles below the ocean surface—and all in 36 hours.

These kismet-like events and many others along the way have led to even more product inventions for on- and off-shore applications from the company’s locations in North and South America, Europe, Asia, India, the Middle East, North Africa and Eurasia. Today, T.D. Williamson offers one of the widest ranges of pipeline pigs, hot tapping and plugging equipment, pipeline integrity services, and non-intrusive inline isolation technologies. A true success story by any stretch of the pipeline, 100 years in the making.

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