Drill Bit Integrating Weight and Torque Sensors
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Solution Overview
Problem
Existing drill bits rely on sensors away from the drill bit to estimate torque and weight-on-bit, leading to inaccurate measurements during drilling operations.
Innovation Solution
Incorporating weight and torque sensors directly into the drill bit body, with processing circuits to provide accurate signals for weight and torque measurements, allowing for real-time estimation and control during drilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are disposed on the BHA away from the drill bit to estimate torque and weight-on-bit, then the device complexity is reduced, but the measurement precision deteriorates
Solution Approach 1:
The patent merges the sensors directly into the drill bit body, combining the measurement function with the drilling tool itself. This eliminates the need for separate BHA sensor placement and provides direct, accurate measurements of torque and weight-on-bit at the drill bit location, resolving the contradiction between measurement precision and device complexity.
2Measurement precision
If sensors are placed directly in the drill bit body, then the measurement precision of torque and weight-on-bit is improved, but the device complexity increases
Solution Approach 1:
The drill bit body is designed to serve multiple functions: it performs drilling while simultaneously housing the sensors for torque and weight-on-bit measurement. This multi-functionality approach integrates the measurement system into the existing drill bit structure without requiring separate dedicated measurement devices, thereby improving measurement precision while controlling device complexity.
Data Source
AI summary
A drill bit made according to one embodiment includes at least one of a weight sensor and a torque sensor configured to provide signals representative of the weight and torque on the drill bit when the drill bit is used for cutting into a formation. A circuit may be configured to process signals from the weight and torque sensors to provide an estimate of the weight and torque on the bit when the drill bit is used for cutting into the formation.