Geothermal well inside heat exchange pipe installing process

Abstract

The invention discloses a geothermal well inside heat exchange pipe installing process. The geothermal well inside heat exchange pipe installing process includes a well drilling procedure, a pipe installing procedure, a water stopping procedure, a punching fluid returning procedure, a well washing procedure, a water drawing test procedure, a perforation procedure and a well inside heat exchange experiment procedure. A stepped hole is drilled in the ground through the well drilling procedure. A plurality of layers of petroleum pipelines with different diameters are combined in a sleeved mode and inserted into the hole through the pipe installing procedure, and water is stopped through the water stopping procedure. A well body is detected through the punching fluid returning procedure, the well washing procedure, the water drawing test procedure, the perforation procedure and the well inside heat exchange experiment procedure. Water flow is injected into the pipelines so that heat energyat the bottom end of the hole can be absorbed to heat a water body. Finally, a water drawing pipe with a water-permeable hole in the bottom end is inserted into each petroleum pipeline to draw out the hot water at the bottom end of the hole, so that heat energy in the earth crust is led out. The problem that geothermal energy resources are difficult to use at present is solved, and good practicalvalue is realized.

Description

technical field [0001] The invention relates to a heat exchange tube installation process, in particular to a heat exchange tube installation process in a geothermal well. Background technique [0002] Geothermal energy is heat energy originating within the Earth, which is produced by the decay of radioactive materials within the Earth. Geothermal energy has huge reserves, but limited by the way of use, its utilization rate is limited. At present, only a few areas use geothermal energy for power generation. The trend of geothermal energy is that the closer to the surface, the lower the geothermal temperature, and the higher the inner core temperature, so people choose to drill wells in suitable areas, and then lower the pipelines and inject water bodies to replace and carry the high-temperature water bodies inside the earth's crust. come out. However, how to implement the installation process of the operation is the key to the success. Contents of the invention [0003]...

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Problems solved by technology

[0003] The invention proposes a heat exchange tube installation process in a geothermal well, which solves the problem of difficult use of geothermal energy at present. A stepped hole is drilled on the ground, and several layers of oil pipelines with different diameters are respectively fitted and inserted into the hole. Water flow is injected into the pipeline to absorb the heat energy at the bottom of the hole to heat the water body, and finally a suction pipe with a water permeable hole at the bottom is inserted into the oil pipeline, and the suction pipe pumps out the hot water at the bottom of the hole to realize the export of heat energy in the earth's crust

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