Drilling tool

	Drill bits for drilling all types of directional wells as a component of non- and steerable BHA
	Bits for drilling with curvature intensity
	Bicentric bits for drilling with simultaneous reaming of well shaft
	Core bits are purposed to core recovery in soft rocks, interstratified with layers of medium rock formations of III-IV category of hardness Distinctive feature: better core removal due to smooth rock cutting with PDC cutters. Flushing holes are carried outside core catchers in order to prevent core damage by drilling fluid. Modifications: are equipped with additional inserts with impregnated diamonds to increase tool resistance.
	Core bits are purposed to core recovery in low-abrasive medium rock formations of V-VI category of hardness, interstratified with layers of hard rock formations Modifications: are reinforced with additional impregnated diamond inserts to increase the tool durability. Distinctive feature: better core removal due to smooth rock cutting with PDC cutters. Flushing holes are carried outside core catchers in order to prevent core damage with drilling fluid.
	Core bits are purposed for core recovery in low-abrasive medium rock formations of V-VI category of hardness, interstratified with layers of hard rock formations Modifications: are reinforced with additional PDC cutters. They have more durability than "C92". Distinctive feature: better core removal due to smooth rock cutting with PDC cutters. Flushing holes are carried outside core catchers in order to prevent core damage with drilling fluid.
	Core bits are purposed for core recovery in low-abrasive soft rock formations of l-lll category of hardness Modifications: are reinforced with large PDC cutters. They have rapid core recovery rate. Distinctive feature: better core removal due to smooth rock cutting with PDC cutters. Flushing holes are carried outside core catchers in order to prevent core damage with drilling fluid.
	Drill bits of BC type Drill bits of BS type, impregnated with hard-alloyed cutters, are purposed for drilling in low abrasive soft and medium rock formations, to drill out cement and sand plugs.
	Special bits of BP type Special bits of BP type are purposed for reaming and calibrating well shafts in low abrasive soft and medium rock formations with high drilling rate. The bits are equipped with hard-alloyed claws and PDC cutters.