Hydrojets rotary drill bit
AssigneeCooled Edge Bits, Inc.
InventorAnatoli Alimpievich Borissov
Life of this patent
Estimating the term…
Abstract
A hydrojet rotary drill bit (10) is provided for drilling a hole in a subsurface formation. The bit body (12) includes a plurality of axially extending ribs (16a, b, c, d, e, and f) and a flow channel between adjacent ribs. A plurality of cutting elements are fixedly mounting on a respective one of the plurality of ribs. A plurality of flow nozzles (20a, b, c, d, e, and f) made on respective one of the plurality of ribs to direct fluid (mud) to a respective one of the plurality of cutting elements to clean and cool the cutting elements.
Claims18
A rotary drill bit for drilling a hole in a subsurface formation, comprising:
- a bit body having a plurality of radially extended blades, each with a leading cutting face oriented in the direction of rotation and outer peripheral surface oriented toward the wellbore, flow channels extend radially outward between adjacent blade beyond the outer peripheral surfaces of each blade;
- a plurality of cutting elements each fixedly mounted on leading cutting face of each of the radially extending blades;
- a plurality of flow nozzles on each blade manifold in fluid communication with the internal bit body flow path for creation and directing high speed fluid jets directed to the cutter's edge from manifold to a respective one of the plurality of cutting elements;
- and
- manifolds for receiving a fluid flow from the bit body flow path located inside of each blade, wherein the fluid flow is outputting tangentially to the profile of bit body through a plurality of flow nozzles to the respective plurality of cutting elements mounted on a respective neighboring blade and wherein the blade's manifold positioning each of the plurality nozzles on an opposite side of the cutters (backside to the cutters) to create the torque in the same direction as applied to the drill bit.
A method of drilling a hole in a subsurface formation, comprising:
- providing a bit body having a plurality of radially extending blades with a flow channel between adjacent blades, the bit body further including a bit body flow path radially inward of its peripheral edges;
- fixedly mounting a plurality of cutting elements on a respective one of the plurality of radially extending blades;
- providing a blade's manifold for receiving fluid flow from the bit body flow path and outputting fluid through a plurality of flow nozzles to a respective plurality of cutting elements mounted on a following neighboring blade, the blade's manifold positioning each of the plurality of nozzles on the back side of the blade's and facing to the cutters on the following blade;
- and providing a plurality of flow nozzles each in fluid communication with the bit body flow path for directing fluid to the blade's manifold and then to respective one of the plurality of cutting elements.
Dependencies are inferred from the claim text.