Roller Crusher for Real-Time Rock Cuttings Analysis
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Solution Overview
Problem
Current methods for determining mechanical properties of rocks, such as specific energy, cohesion, and unconfined compressive strength, are limited by reliance on laboratory tests that are costly, require specialized equipment, and are not suitable for real-time data during drilling operations, making it difficult to optimize and ensure safety in drilling processes.
Innovation Solution
A method and device that measure energy data directly from rock cuttings using an electric motor-driven roller system to calculate mechanical specific energy (MSE), allowing for real-time determination of rock properties like cohesion and unconfined compressive strength, correlating MSE with these characteristics for immediate decision-making.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laboratory tests are used to determine rock properties, then measurement precision is improved, but loss of time and productivity deteriorate due to inability to provide real-time data
Solution Approach 1:
The patent replaces complex laboratory mechanical testing systems with a simplified roller crushing system that measures energy consumption directly during drilling operations. The electric motor-driven rollers crush rock cuttings while measuring power consumption, providing real-time rock property data without requiring separate laboratory analysis.
Solution Approach 2:
The system uses the rock cuttings themselves as the test material, eliminating the need for separate core sampling and laboratory preparation. The cuttings generated during normal drilling operations are directly fed into the roller crusher for immediate analysis, making the system self-sufficient and continuously operational.
2Measurement precision
If laboratory tests with specialized equipment are used, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses inexpensive rock cuttings generated during drilling as the test material, replacing expensive laboratory core samples. The roller crusher system with electric motor is significantly cheaper than laboratory testing equipment, providing accurate rock property measurements at a fraction of the cost.
Solution Approach 2:
The roller crusher system serves multiple functions: it crushes rock cuttings for analysis, measures energy consumption to calculate specific energy, and provides real-time rock property data. This multi-functional approach eliminates the need for multiple separate testing devices and procedures.
3Ease of operation
If surface drilling data is used to calculate MSE, then ease of operation is improved, but measurement precision deteriorates due to inclusion of vibration and other external factors
Solution Approach 1:
The patent extracts the rock crushing process from the complex drilling system by collecting cuttings at the surface and crushing them separately in the roller system. This separation eliminates vibration and other drilling-related external factors from the energy measurement, providing pure rock property data while maintaining ease of operation through automated collection and processing.
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
Enables reliable, real-time assessment of rock properties at the drilling site, reducing costs and improving drilling efficiency by providing immediate data for safety and optimization, using a low-cost device that correlates MSE with cohesion and UCS, facilitating better drilling operations.
Implementation Method 1
an electric motor-driven roller system to calculate mechanical specific energy
Implementation Method 2
cuttings are crushed between two rollers driven by an electric motor
Data Source
AI summary
In a method for determination of properties of cuttings from rock drilling the cuttings are crushed between at least two rollers, at least one roller being driven by a motor. A mechanic specific energy of the cuttings is determined by measuring the energy applied by the motor.