Method for sealing carbon dioxide in basalt by adopting butt joint well

Abstract

The invention discloses a method for sealing and storing carbon dioxide in basalt by adopting a butt joint well, and belongs to the technical field of carbon emission reduction. The method comprises the steps that firstly, a horizontal well is constructed, a horizontal well section is drilled by 1000-1500 m in the upper portion of basalt, and a screen pipe is put down for well completion; secondly, 3-5 vertical wells are constructed along the drilling track of the horizontal well section, and segmented perforation and fracturing construction are sequentially carried out in the middle of basalt, so that an artificial crack formed by fracturing is communicated with the horizontal well section; then, mine water generated by a coal mine is continuously injected into basalt from the wellhead of the horizontal well; and finally, CO2 is captured from a coal-fired power plant and the like and is conveyed to a vertical well site through a pipe, then the CO2 is cooled and pressurized into liquid CO2, the liquid CO2 is continuously injected from a vertical well mouth, and mineralization and storage of CO2 in the basalt layer are achieved. According to the method, efficient and safe storage of CO2 in basalt is achieved on the premise of low water consumption, comprehensive utilization of coal mine water is achieved, and remarkable economic, environmental and social benefits can be generated.

Description

technical field [0001] The invention relates to a method for sequestering carbon dioxide in basalt by using a butt well, which is especially suitable for areas with rich Upper Permian coal resources and basalt development under the Upper Permian coal system in southwest my country, and belongs to the technical field of carbon emission reduction. Background technique [0002] CO 2 Greenhouse gas emissions and the resulting climate change have become one of the most serious challenges to global development. With the rapid development of my country's economy, CO 2 Emissions are increasing year by year, making my country face unprecedented international pressure on greenhouse gas emission reduction. [0003] my country has long attached importance to CO 2 Emissions contribute to global warming and climate change and are actively involved in CO 2 Emissions reduction efforts and trying a variety of ways to reduce CO 2 emissions. in many types of CO 2 Among the emission redu...

AI Technical Summary

Problems solved by technology

[0006] Technical problem: the purpose of the present invention is to overcome the traditional basalt mineralization sequestration of CO 2 The problem of high water consumption, high economic cost and unfriendly environment in the process provides a method of sequestering carbon dioxide in basalt by using a docking well, and combines the mine water discharged from the coal mine with the CO produced by coal combustion. 2 Injected into the Upper Permian basalt to realize the CO produced by coal burning 2 Safe, efficient and permanent mineralization storage in basalt and comprehensive utilization of mine water in coal mines

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