- Discovery Gas Transmission LLC
- Dauphin Island Gathering Partners
- Destin Pipeline Company, L.L.C.
- Destin Pipeline Company, L.L.C.
- Distrigas Corporation
- Dominion South Pipeline Co., LP
- Eastern Shore Natural Gas Company
- Egan Hub Storage, LLC
- Destin Pipeline Co., LLC
- Dauphin Island Gathering Partners
- Discovery Gas Transmission LLC
- Central Asia-China gas pipeline
- Dolphin Gas Project

- Iran-Armenia Natural Gas Pipeline
- Iran-Pakistan-India gas pipeline
- Iran-Turkey pipeline
- Korpezhe-Kurt Kui Pipeline
- Europipe I
- Europipe II
- FLAGS
- Franpipe
- Frigg UK System
- Fulmar Gas Pipeline
- GALSI
- Gazela Pipeline