Oil & Gas

At top of the list for the world’s most important resources, oil & gas plays a vital role in steering the economy. Whatever your needs, our wide range of services are available to you. From project and program management to engineering design and staffing services, our staff is experienced in many aspects of upstream, midstream, and downstream oil & gas projects.


Reducing our client’s average costs, HGA delivers on accuracy, efficiency, and reliability. Our methods and practices will improve safety and optimize operations throughout all E&P phases.



Looking to execute a gathering system expansion? Or, are you in need of detailed design services for multiple compressor stations? HGA has worked on some of the world’s largest piping networks as designers, builders, constructors, and project managers.



HGA is well-versed in understanding the lifecycle management of your refinery with specific knowledge of the OSHA regulatory requirements, the technical process, and the operating environment.


Pipelines & Terminals

HGA has decades of experience supporting our pipeline client challenges with the initial site and route selection, pipeline design and mapping, inspection and integrity management services, and construction management support.



Our teams have in-depth experience in the operation of chemical and petrochemical plants and have completed hundreds of projects, including technical evaluations for grassroots plants, plant expansions, and retrofits.