CompactGTL - Gas-to-liquids company specializing in associated gas utilization in oilfield developments. Overview of business, process, applications, and projects.

Imperial Petroleum Recovery Corp. - Provides products and services to oil processors including microwave-based oil separation equipment. (OTC: IREC.PK)

Newpoint Gas Services - Natural gas treating applications include arsenic treating and removal, amine sweetening, pressure swing absorption, hydrogen sulfide scavengers, carbon dioxide and oxygen removal, and helium purification.

Oman Lng - Produces liquefied natural gas.

Rentech Inc. - Gas to liquid and natural gas conversion technology for carbon-bearing materials, iron-based catalysts, oil, and coal bed methane, based in Denver, Colorado. Publicly traded company.

Syntroleum Corporation - Providing process technology for the conversion of natural gas into synthetic liquid hydrocarbons, which can be refined into ultra-clean fuels and specialty products.

Vanzetti Engineering - Supplier of cryogenic pumps, ambient vaporizers and equipment for air gases and LNG applications.