PHH Petroleum Consultants Ltd. is an international petroleum consulting company located in Calgary, Alberta, Canada. PHH-PC has been providing a comprehensive range of expert oil and gas simulation services since 1977. Since inception, the main focus of the company has been on optimizing large complex gas deliverability systems, gas storage systems and complex oil reservoirs. PHH-PC is continually expanding its customer base and is primarily active throughout North America and Libya. More recently, PHH-PC has been modelling shale gas and coal bed methane type systems.

Geological, geophysical, petrophysical, and pressure transient analysis services are also professionally available through PHH-PC or affiliated companies.

Simulation software development is another focus of the company and is provided through affiliate company PHH Engineering Ltd. Three main software packages (GASMOD, GCOMP, and PHS-SIM) are available for custom modification and licensing.