METHOD OF SUBSURFACE DISPOSAL OF DRILL FLUIDS IN PERMAFROST ROCKS

摘要

FIELD: transport.;SUBSTANCE: proposed method comprises pumping waste drill fluids from drilling rig to subsurface reservoir 1, forcing them through well 2 into said reservoir and changing them into frozen state. For this, free space 7 is provided in reservoir top section making at least 9% of the volume of fluid contained in drill wastes. In-season refrigerating device 3 is lowered through the well onto the reservoir bottom into drill wastes sediments. Drill wastes are frozen at the temperature lower than that of permafrost rocks in direction from reservoir vertical axis to its side surface.;EFFECT: higher efficiency of disposal.;1 dwg