Cost estimating and economic analysis computer software for design, construction, operation, and management of gas field installations, gas processing plants including LNG plants, gas processing facilities including coal gasification, coal bed/seam/mine methane facilities and pre-combustion carbon dioxide capture systems for all of the foregoing, post-combustion carbon dioxide capture systems for power generation plants, refineries, industrial production facilities and installations and flue gas emissions management systems; cost estimating computer software; economic analysis computer software