A selected list of clients includes the following:
- American Petroleum Institute
- Assocation of Oil Pipelines
- Blackwell Sanders Peper Martin Law Firm
- Botas International Limited
- BP Pipelines North America
- Buckeye Pipeline
- Centurion Pipeline
- Chevron Pipeline
- Colonial Pipeline
- ConocoPhillips
- Enbridge Pipeline
- Explorer Pipe Line Company
- Harris Interactive
- Interterstate Natural Gas Association of America
- Jones Day Law Firm
- Kinder Morgan
- Latham and Watkins Law Firm
- Long Horn Pipeline Company
- Louis Dreyfus Highbridge Energy
- Lyondellbasell
- New Century Software
- Olympic Pipeline Company
- Pacific Energy Group
- PBF Energy
- PennWell Publishing
- Phillips 66 Partners
- Pipeline Research Council International
- Shell PIpeline
- Sidley and Austin Law Firm
- Spectra Energy
- Sunoco Logistics
- Tesoro Logistics
- The Premcor Refing Group
- TransCanada Pieline
- University of Houston
- US Department of Justice
- US Enviromental Protection Agency