Three-dimensional comprehensive, efficient and precise control technology method for coal and gas coexisting mines

Abstract

The three-dimensional comprehensive, high-efficiency and precise control technology method for coal-gas coexisting mines disclosed by the invention includes the following steps: S10, calculating coal seam gas geological reserves and surrounding rock oil and gas geological reserves; S20, establishing a reasonable parameter model for drilling arrangement; S30: constructing in the coal seam Directional long drilling along the coal seam, and staged hydraulic fracturing construction; S40: Through the monitoring of the extraction data, combined with parameters such as the extraction period, comprehensively evaluate the treatment effect, and provide a design basis for the treatment area under similar geological conditions. Formed a multi-dimensional three-dimensional surrounding rock oil and gas-coal seam gas comprehensive drainage prevention technology for coal and gas coexisting mine disasters, realizing spatial and temporal three-dimensional drainage of gas dynamics in mining space disasters, improving mine mining and gas drainage efficiency, and fundamentally to solve the problem of mine gas disasters.

Description

technical field [0001] The invention relates to the technical field of underground safety in coal mines, in particular to a three-dimensional, comprehensive, efficient and precise control technology for mines where coal, oil and gas coexist. Background technique [0002] The Ordos Basin is a multi-cycle Mesozoic craton basin and one of the largest coal and oil-gas depositional basins on land in my country. Since the Late Triassic, the lacustrine basin has formed a complete lacustrine-delta facies sedimentary evolution cycle in the process of occurrence-development-death sedimentary evolution, which provides good depositional environmental conditions for the coexistence of various types of natural gas. From the beginning of the 20th century to the present, scholars and experts led by Dai Jinxing, Wang Zhuquan, Yuan Fuli, etc. have discussed the structural evolution and sedimentary characteristics in the basin, and clarified the objective facts of the coexistence of coal, oil ...

AI Technical Summary

Problems solved by technology

Faced with the threat of multi-source disaster gases in the coal seam, surrounding rock oil and gas, and the underlying coal seam during the production process, the prevention and control measures of "spreading the net widely and densely distributing the holes" are currently adopted, and the first pumping (exploration) and then mining (excavation) are adopted. It has a certain control effect on the prevention and control of disaster gases, but there are problems such as large drilling engineering volume, low drilling utilization rate, and long time to reach the standard

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