Robotic Mud Logger for Real-Time Drill Cutting Analysis
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Solution Overview
Problem
Conventional mud logging is prone to human error and has low resolution due to manual collection and analysis of drill cuttings, and downhole techniques are expensive and environmentally challenging.
Innovation Solution
A robotic mud-logger system that collects a slurry sample from the drilling fluid circuit, separates the drilling fluid from rock cuttings, and performs elemental analysis using a spectrometer in real time, reducing the need for manual handling and minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual collection and analysis of drill cuttings is used, then device complexity is reduced, but measurement precision and reliability deteriorate due to human error and low resolution
Solution Approach 1:
The patent replaces manual mechanical collection and analysis procedures with an automated robotic system that uses sensors, spectrometers, and computer-controlled sample handling. The robotic mud logger automatically collects cuttings, separates them from drilling fluid, and performs elemental analysis using spectroscopic instruments, eliminating human error while maintaining manageable system complexity through modular design
Solution Approach 2:
The system performs self-service through automated sample collection, separation, and analysis without requiring manual intervention. The robotic mud logger autonomously monitors drilling operations, collects cuttings real-time, processes samples through integrated separation and analysis systems, and provides continuous data feedback, reducing both human labor and potential for error
2Measurement precision
If downhole techniques are used, then measurement precision improves, but cost and environmental harm increase
Solution Approach 1:
The patent uses drilling fluid as an intermediary medium to transport rock cuttings from the borehole to the surface analysis system. Instead of deploying sensors downhole, the system collects cuttings in the drilling fluid at the surface and performs analysis there, eliminating the need for downhole equipment and associated environmental risks while maintaining high measurement precision
Solution Approach 2:
The system extracts and separates rock cuttings from the drilling fluid using centrifugal separation devices, then analyzes only the solid cuttings sample. This extraction approach allows precise elemental analysis of the cuttings without requiring downhole measurement techniques, thereby reducing environmental impact while maintaining measurement quality
3Productivity
If manual sample collection is used, then device complexity is reduced, but productivity and frequency of analysis deteriorate
Solution Approach 1:
The robotic mud logger provides continuous automated collection and analysis of drill cuttings throughout the drilling operation. The system operates continuously without interruption, collecting samples at regular intervals and providing real-time elemental composition data, thereby significantly increasing analysis frequency compared to manual methods while managing complexity through automation
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 robotic system enhances the accuracy and frequency of drill cutting analysis, reduces human labor, and avoids the environmental and cost concerns associated with downhole techniques, providing real-time elemental composition data for improved drilling operations.
Implementation Method 1
a liquid separator to remove drilling fluid from a slurry sample and discharge a sample of the rock cuttings
Implementation Method 2
a spectrometer to perform elemental analysis of the sample of the rock cuttings substantially in real time with collection of the slurry sample
Data Source
AI summary
A robotic mud-logger having a slurry sampler to collect a slurry sample online from a drilling fluid circuit contemporaneous with drilling of a borehole, the slurry sample including drilling fluid and rock cuttings. A liquid separator removes drilling fluid from the slurry sample and discharges a sample of the rock cuttings. A spectrometer and other sensors perform elemental analysis of, and take other measurements related to, the sample of the rock cuttings substantially in real time with collection of the slurry sample. A system is provided for retaining stored samples in containers with identifying data.