Fracturing pre-control method for rock burst ground horizontal well area of steeply inclined coal seam
The invention provides a steeply inclined coal seam rock burst ground horizontal well area fracturing pre-control method which comprises the steps that in the steeply inclined coal seam mining process, overlying strata fracture released energy in the working face stoping process of a steeply incline...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a steeply inclined coal seam rock burst ground horizontal well area fracturing pre-control method which comprises the steps that in the steeply inclined coal seam mining process, overlying strata fracture released energy in the working face stoping process of a steeply inclined coal seam is monitored through micro-seismic monitoring equipment, and a rock stratum with the highest fracture released energy is determined as a fracturing target layer; drilling downwards from the ground and arranging a vertical section of a fractured well, and drilling and arranging a horizontal section of the fractured well along the strike of the steeply inclined coal seam after reaching the fractured target layer; the drilling and arrangement direction of the horizontal section of the fractured well is opposite to the advancing direction of the working face; perforation operation is carried out on the horizontal section of the fractured well, and perforation is carried out in the inclination direction of t |
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