FIELD: mining.
SUBSTANCE: invention refers to systems and methods of extraction of underground resources and particularly to three-dimension system of wells for facilitating access to underground zone. According to one version there is foreseen boring of an entrance well from the surface, then boring of a central drain well, running down from the entrance well on a whole in the vertical direction through underground zones, drilling of reamed cavity from the central drain well near its bottom and drilling of two or more exterior drain wells from the entrance well; the said exterior drain wells run through underground zones. At that each of drain wells stretches outside and down from the entrance well at the first specified distance, and stretches inside on a whole in the vertical direction at the second specified distance, and stretches inside in the direction to the central drain well at the third specified distance and crosses the reamed cavity.
EFFECT: upgraded efficiency of extraction of gaseous methane and removal of water, contained in rocks, from several coal layers.
46 cl, 9 dwg
