Tracerco is an oil and gas services business owned by London based investment firm Sullivan Street Partners.

In the 1960s the division was named Physics and Radioisotope Services, performing flow studies, heat exchanger leakage tests and column scans on a chemical plant in the UK.

The Specialist Measurement Instruments section was established with a variety of level, trip, and Nuclear density gauges, commonly used in applications such as slug catchers and separation vessels.

In the 1970s, the business supported the development of the North Sea oil industry, selling a range of services and nucleonic gauges.

A subsea nucleonic gauge level system was developed for Texaco Highlander Slug Catcher Tartan tieback, as well as techniques to assess and diagnose fluid catalytic cracking units.

[7] The acquisition facilitated the provision of Tracerco's more extensive range of process tracing and characterization technologies amongst clients throughout the refining and petrochemical industry in Europe and North Africa.