Carbon dioxide fracturing method

Abstract

The invention discloses a carbon dioxide fracturing method. The method includes the steps that first, carbon dioxide fracturing devices are assembled; second, an ohmmeter is used for detecting whetherthe resistance value between a filling valve and a release tube is normal or not; third, the carbon dioxide fracturing devices assembled in the first step are loaded and transferred to a mine after passing examinations; fourth, whether the resistance between each carbon dioxide fracturing device and a wire is normal or not is measured, a layer of blasting holes are drilled in the mine, and the carbon dioxide fracturing devices are put into the corresponding blasting holes; fifth, the hole opening of each blasting hole is covered with a bamboo chip and then is covered with a tarpaulin and earth bags; and sixth, a warning region is made around each carbon dioxide fracturing device, and an ignition device is pressed to start the carbon dioxide fracturing devices for detonation. By means of the carbon dioxide fracturing device, reuse can be realized, using cost is greatly reduced, powerful thrust generated momently is used for tearing materials, the same carbon dioxide fracturing devicescan be connected through the corresponding wires, and the advantages of being low in labor intensity, large in fracturing force, safe and good in fracturing effects are achieved.

Description

technical field [0001] The invention relates to the technical field of engineering cracking, in particular to a carbon dioxide cracking method. Background technique [0002] Explosive blasting is still one of the coal mining methods at present. Explosive blasting is powerful and effective, and it is a typical open flame blasting. However, there are many defects in open flame blasting, and there are high requirements for use conditions, use environment, daily management, etc., especially in coal mines. Many coal mine gas accidents are caused by open flame explosions. Simultaneously, the cases of other accidental explosions due to explosives also occur from time to time, which has affected safe production and caused economic losses. In the mining of mineral resources, the high-pressure gas blasting technology of carbon dioxide fracturing is a new type of physical blasting technology at present. The carbon dioxide fracturing technology is a high-pressure gas blasting technolo...

AI Technical Summary

Problems solved by technology

However, the carbon dioxide cracker device needs to be dismantled at both ends during recovery and disassembly, which takes a long time to disassemble, and when the high-pressure liquid carbon dioxide in the cracker is gasified and expanded, its insulating structure is impacted by the high-pressure air flow and swells and shatters. It is easily affected by thermal deformation and damage, the service life of the cracker is short, and the cracking effect on mines is not good.