Full Face Drill Bit with Cutting Surface 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 dissipation and fluid distribution.
Innovation Solution
A full-face drill bit design with a full face crown that includes a plurality of bores extending from the cutting face to an interior space, allowing direct fluid delivery and enhanced fluid velocity, and channels on the outer surface to improve fluid distribution and reduce contact area, eliminating the need for a central waterway.
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 fluid distribution is easier to maintain, but the cutting removal rate decreases and wear increases due to lack of direct water flow on the cutting surface
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 full-face crown design. This segmentation allows direct water flow to reach the cutting surface through dedicated channels while maintaining structural organization and manageability.
Solution Approach 2:
The invention transitions from a traditional central waterway design to a multi-dimensional fluid distribution system. Channels are positioned not only radially but also on the cutting surface itself, creating a three-dimensional fluid delivery network that provides direct cooling and flushing where needed most, rather than relying solely on central axial flow.
2Temperature
If existing drill bits lack direct water flow on the cutting surface, then the drill bit structure is simpler, but heat removal from the cutting surface is minimized during high-rotational operation
Solution Approach 1:
The drill bit incorporates channels with different properties at different locations to address local needs. Channels on the cutting surface are specifically positioned to provide direct water flow and cooling where heat generation is highest, while other channels handle fluid distribution and cuttings removal. This localized optimization ensures efficient heat removal precisely where required without unnecessarily complicating the entire structure.
3Productivity
If existing drill bits do not provide direct fluid flow to the cutting surface, then manufacturing is simpler, but penetration rates are reduced and contact stress measurements are lower
Solution Approach 1:
The drill bit design incorporates pre-positioned channels that are formed during manufacturing to ensure optimal fluid flow paths are established before the drill bit enters service. The channels are precisely located to deliver water directly to the cutting surface and to facilitate cuttings removal, ensuring that the fluid distribution system is ready to function effectively from the first use, thereby maximizing penetration rate from the outset.
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 enhances cutting removal rates, penetration rates, and wear resistance by providing direct fluid flow and efficient heat dissipation, resulting in improved performance compared to conventional drill bits.
Implementation Method 1
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 2
the full face crown can define a slot extending therein the cutting face of the outer surface of the full face crown that is configured to allow for the fracture and ejection of desired core samples
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.