Using the Cooling Capacity of Liquefied Natural Gas to Freeze Saline Soil that Contains Cryopegs

Abstract

The effectiveness is considered of using the cooling capacity of liquefied gas to improve the operating reliability of cryopeg-containing saline soil infrastructure beds at gas-condensate fields. Mathematical modeling results are presented for a temperature field in soil beds in a four-layer soil massif (man-made embankment-frozen soil-saline thawed soil containing a cryopeg lens) when it interacts with a low-temperature thermal stabilizer. The rate of soil freezing was estimated for various coolant medium temperature, along with the efficiency of this method of thermal stabilization.