FIELD: mining engineering.
SUBSTANCE: system for drilling wells with improved plastering action contains the first drilling tool and the second drilling tool. The first drilling tool comprises an outer casing, an inner spindle and is made to grind the drill cuttings, obtained from the drill bit between the outer casing and the inner spindle. The second drilling tool is configured to extend the blades outward from the spindle of the second drilling tool and spread the cuttings onto the borehole wall. The first drilling tool is located between the drill bit and the second drilling tool.
EFFECT: obtaining strong plaster layer on the borehole wall, consecutive implementation of the plastering process.
14 cl, 5 dwg
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