Protecting the Developers Investment
Across the Entire Project Cylce

A Clough Company

CH·IV International was established in 1991 as CH·IV Corporation. The company provides consulting services to LNG asset developers, regulators, facility owners, operators and lenders to ensure assets are designed, developed, constructed and operated safely and in accordance with codes, regulations, and the project’s technical and commercial specifications.

CH·IV specializes in the provision of LNG engineering and consulting services to the global LNG sector including North America, Asia, Africa, Europe, the Pacific Rim, and South America. 

In 2014 CH·IV was acquired by Australia’s premier oil and gas contractor Clough Limited. CH·IV will continue to act independently and can now leverage complementary skills and synergies across the entire LNG spectrum to provide a significantly strengthened LNG service to clients.

More About Us

Recent News

CH-IV International to Provide Engineering for Freeport LNG’s Expansion to Add…

04, June 2015

CH-IV will manage the development of the formal Federal Energy Regulatory Commission (FERC)...

CH·IV International Secures Owner’s Engineer Contract for Magnolia LNG

20, May 2015

CH·IV International (CH·IV) announces today that they have been selected to fulfill the roll of...

CH·IV awarded Facility Independent Engineer for Freeport Liquefaction Project

06, October 2014

​CH·IV awarded Facility Independent Engineer for Freeport Liquefaction Project. Services...

Products & Services

CH·IV provide the full spectrum of LNG consulting and design services from feasibility through to operation, to protect the developer’s investments across the entire project cycle.

Product & Consulting

CH·IV International can provide all the engineering support needed to take a client through the steps necessary to evaluate viability of owning and operating an LNG production facility


LNG Import & Export

Our primary focus is to support the worldwide expansion for the LNG industry. 


Small Scale & Peakshaving Facilities

CH·IV International's core services for satellite and peakshaving facilities are focused on client satisfaction. 


LNG Regulatory Support

CH·IV's knowledge and experience with these and other LNG industry specific standards and codes are unsurpassed in the industry.