Upstream Engineering specializes in the engineering, design, procurement and project management of oil and gas processing and transmission facilities for onshore and offshore applications. It offers project planning, preliminary engineering, design drafting, instrumentation and procurement services. The company also provides technical and commercial evaluation services and vendor data packages. Located in Houston, Upstream Engineering serves Anadarko Petroleum, Apex Oil & Gas, Challenger Minerals, Chevron Texaco, Delta Engineering, El Paso Production, Energy Partners, Popham Walter Architects and Transworld Exploration. The company also offers the SeaHorse line of minimal platform technology through an agreement with SeaHorse Platform Partners.