05.07.2009
This term applies to ground that is continuously at a temperature below 32 degrees for more than two years. Very common in Alaska and Siberia.
Used to insulate LNG tanks
A device used to perforate oil and gas wells in preparation for production. The gun contains different shaped explosive charges
A well completion method in which the producing zone or zones are cased through, cemented, and perforated to allow fluid flow into the wellbore. A well completed by this method.