Full Face Drill Bit with Direct Fluid Channels
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Solution Overview
Problem
Existing drill bits lack direct fluid flow on the cutting surface, leading to reduced cutting removal rates, increased wear, and low penetration rates due to inadequate heat removal and fluid distribution.
Innovation Solution
A full-face drill bit design with a full face crown and shank that defines an interior space for water or drilling fluid, featuring bores extending from the cutting face to the interior space for direct fluid distribution and a slot for core sample fracture and ejection, eliminating the need for central waterways and enhancing fluid velocity and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing drill bits use a central waterway design without channels on the cutting surface, then the structure is simpler and easier to manufacture, but the fluid flow velocity to the cutting surface is reduced, leading to decreased cutting removal rates and increased wear
Solution Approach 1:
The drill bit structure is segmented into multiple functional zones: a central waterway for fluid supply, multiple channels positioned at different locations (including on the cutting surface) for fluid distribution, and a crown structure that directs fluid flow. This segmentation allows high-velocity fluid to reach the cutting surface directly through channels while maintaining structural organization.
Solution Approach 2:
The invention transitions from a single-dimensional central waterway design to a multi-dimensional fluid distribution system. Channels are positioned at various radial distances from the center and at different depths, creating a three-dimensional network that delivers fluid to multiple areas of the cutting surface simultaneously, increasing overall fluid-cutter interaction.
2Temperature
If existing drill bits lack direct fluid flow on the cutting surface, then the structure is simpler, but heat removal from the cutting surface is minimized during high-rotational operation
Solution Approach 1:
The drill bit design implements local quality by positioning channels at specific locations where cooling is most needed. Channels are placed at different radial distances from the center and positioned to deliver fluid directly to high-friction cutting areas, providing localized cooling where heat generation is greatest during high-rotational operation.
Solution Approach 2:
The invention utilizes hydraulic principles by designing channels that leverage fluid pressure and velocity to deliver cooling water directly to the cutting surface. The channel geometry and positioning are optimized to maximize fluid impact velocity, enhancing convective heat transfer and removing heat more effectively during high-speed drilling operations.
3Reliability
If existing drill bits do not have channels positioned directly on the cutting surface, then manufacturing is easier, but the rate of cutting removal decreases and wear of the cutting surface increases
Solution Approach 1:
The wear protection function is segmented and distributed across multiple channels positioned at different locations on and near the cutting surface. Each channel provides localized fluid delivery to protect specific cutting elements, allowing the wear resistance function to be distributed rather than concentrated in a single complex structure.
Solution Approach 2:
The channels are positioned to deliver fluid to the cutting surface before excessive wear can occur. By providing continuous cooling and cutting surface contact through the channel network, the system performs preliminary protection against heat-induced wear and friction, extending drill bit life before replacement is needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design improves cutting removal rates, penetration rates, and wear resistance by providing direct fluid flow and enhanced cooling, reducing wear and increasing the functional product life of the drill bit.
Implementation Method 1
The interior space can be configured to receive water or other drilling fluid during use of the drill bit
Implementation Method 2
The full face crown can define a plurality of bores extending from the cutting face to the interior space
Implementation Method 3
the lack of water flow can also minimize the removal of heat from the cutting surface during high-rotational operation of the bit
Implementation Method 4
the full face crown can define a slot extending therein the cutting face of the outer surface of full face crown that is configured to allow for the fracture and ejection of desired core samples
Implementation Method 5
a conduit in communication with the interior space and the pressurized drilling fluid can be positioned in communication with a portion of the defined slot such that a desired amount of drilling fluid can be delivered into the slot during a drilling operation
Data Source
AI summary
A drill bit for forming a hole in a formation. The drill bit has a shank and a full face crown that cooperate to define an interior space that receives water or other drilling fluid. The full face crown defines a plurality of bores that extend from a cutting face of the full face crown to the interior space. The full face crown completely circumferentially encloses the interior space of the drill bit. A wedge shaped slot is defined therein the full face crown that extends longitudinally therein a portion of the cutting face and the circumferential outer surface of the full face crown. The slot further defines an apex that is positioned beyond the center of the cutting face of the drill bit such that the longitudinal axis of the drill bit extends through the bottom surface of the slot and into an interior void area of the slot. Further, a conduit is defined in the drill bit that is in communication with the interior space and with a portion of the defined slot.