Removable Strain Puck for Downhole Drill Bit Force Monitoring
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Solution Overview
Problem
Downhole drilling tools face challenges in managing forces applied during drilling operations, leading to wear and fatigue of cutting elements and inefficient drilling due to inadequate monitoring and control of compression, bending, and torsional forces.
Innovation Solution
The implementation of mechanically attached strain pucks with strain gauges on downhole drilling tools, which collect and transmit real-time data on downhole forces, allowing for the modification of drilling parameters to reduce these forces and optimize drilling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strain pucks are permanently attached to the drill bit, then measurement reliability is improved, but device complexity and risk of damage increase
Solution Approach 1:
The attachment mechanism transitions from a static permanent bond to a dynamic reversible connection. The puck wedge allows the strain puck to be easily attached and detached during operations, providing flexibility while maintaining secure attachment during measurement. This resolves the contradiction by enabling reliable measurement without permanent attachment complexity.
Solution Approach 2:
The strain puck is extracted from the drill bit assembly as a separate, removable component. The puck wedge mechanism allows the strain puck to be independently attached and removed without damaging the drill bit or strain gauges, separating the measurement function from the drilling function while maintaining reliability.
2Productivity
If weight on bit is increased to improve drilling speed, then productivity is improved, but force magnitude and tool wear increase
Solution Approach 1:
The strain gauges provide real-time feedback on the actual forces experienced by the drill bit during operation. This feedback allows operators to adjust weight on bit and other drilling parameters to optimize productivity while staying within safe force limits, preventing excessive tool wear and extending bit life.
Solution Approach 2:
The system enables dynamic adjustment of drilling parameters (weight on bit, rotational speed, torque) based on real-time force measurements. By changing these parameters in response to measured forces, the system optimizes the balance between drilling speed and force magnitude, improving productivity without excessive wear.
3Productivity
If real-time force monitoring is implemented, then drilling efficiency is improved, but device complexity increases
Solution Approach 1:
The strain pucks with integrated strain gauges automatically monitor forces without requiring external complex monitoring equipment. The system self-measures and can transmit data wirelessly, providing real-time force monitoring simplicity that improves drilling efficiency without adding significant complexity.
Solution Approach 2:
The patent replaces complex mechanical monitoring systems with electronic strain gauges and wireless transmission. This substitution reduces mechanical complexity while enabling real-time force monitoring, thereby improving drilling efficiency through simpler means.
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
This solution enables the extension of drilling tool lifespan and improves drilling efficiency by allowing for real-time analysis and adjustment of drilling parameters, such as weight on bit, rotational speed, and torque, thereby reducing force magnitudes and enhancing operational performance.
Implementation Method 1
Each strain puck includes strain gauges disposed on the surface of the strain puck that collects data indicating downhole forces applied to the downhole drilling tool
Data Source
AI summary
The present disclosure relates to a downhole drilling tool that may include: an earth-boring drill bit including: a bit body; a shank coupled to the bit body; a strain puck removably coupled to the earth-boring drill bit, the strain puck including a strain gauge to collect data indicating a downhole force applied to the earth-boring drill bit during a drilling operation; and a plurality of blades disposed on exterior portions of the bit body, each blade having respective cutting elements disposed thereon.