SYSTEM AND METHOD FOR CONTROLLING TEMPERATURE OF FLUID FOR IMPROVING INJECTIVITY IN STRATUM OF SUPERCRITICAL CARBON DIOXIDE

摘要

PURPOSE: Fluid temperature controlling system and method for improving the injection efficiency of supercritical carbon dioxide into a ground layer are provided to adjust the injection pressure of fluid at the injecting point of a tube well and to adjust the density of carbon dioxide in the tube well. CONSTITUTION: A fluid temperature controlling system includes a casing part(10), a grouting part(20), a cover(130), an injecting pipe(40), a perforation part(30), a packing part(60), a heat coil part(50), and a temperature adjusting unit(90). The casing part is installed at a tube well hole. The tube well hole is formed from the surface of the ground to an injecting target ground layer in order to inject supercritical carbon dioxide into the injecting target ground layer. The grouting part is formed in a hollow well between the casing part and the tube well hole. The cover covers the upper side of the casing part. The injecting pipe is inserted into the casing part. Carbon dioxide is injected into the injecting pipe. The perforation part transfers the carbon dioxide form the injecting pipe to the injecting target ground layer. The packing part is formed in the injecting pipe and the casing part. The heat coil part surrounds the injecting pipe. The temperature adjusting unit controls the temperature of the heat coil part.