Real-Time Drilling Fluid ECD Control via Downhole Sensors
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Solution Overview
Problem
Drilling operations are hindered by sub-optimal fluid properties in the drilling environment, leading to safety hazards, inefficiencies, and increased costs due to inadequate real-time monitoring and control of drilling fluid properties.
Innovation Solution
A drilling control platform that measures downhole fluid properties such as density and rheology in real-time, performs calculations for equivalent circulating density (ECD) and pressure loss, and adjusts drilling operations accordingly, using sensor data and machine learning algorithms to transmit control signals for modifying fluid properties and circulation rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual fluid property measurements are performed periodically, then operational simplicity is maintained, but real-time control capability is lost leading to safety hazards and inefficiencies
Solution Approach 1:
The patent replaces manual mechanical measurement processes with automated sensor-based electronic monitoring systems. Sensors continuously measure fluid properties such as density and rheology, eliminating the need for periodic manual sampling and laboratory analysis, thereby enabling real-time detection and control while maintaining operational safety.
Solution Approach 2:
The monitoring system performs self-measurement of fluid properties through integrated sensors that automatically detect and report conditions without requiring operator intervention. The system continuously monitors itself and provides real-time data for control decisions, enabling autonomous operation and improving reliability without proportional increases in complexity.
2Productivity
If real-time sensor monitoring is implemented, then drilling operation control is improved, but measurement and data processing complexity increases
Solution Approach 1:
The patent employs multi-functional sensors and measurement devices that simultaneously detect multiple fluid properties (density, rheology, temperature, pressure) using a single integrated system. This universal approach consolidates what would otherwise require separate measurement instruments, reducing overall system complexity while enabling comprehensive real-time monitoring for improved productivity.
3Loss of information
If frequent manual measurements are performed, then fluid property data availability is improved, but operational time and costs increase
Solution Approach 1:
The patent implements continuous real-time monitoring of fluid properties through automated sensors that operate without interruption throughout the drilling process. This continuous measurement approach eliminates the gaps inherent in periodic manual sampling, ensuring complete information availability without consuming operational time, thereby simultaneously improving information availability and reducing time loss.
Data Source
AI summary
Techniques are described for controlling drilling operations based on real time measurement and analysis of fluid properties in a drilling environment. Sensor data can be collected that provides measurement(s) of fluid properties (for example, density and rheology) of the drilling fluid (in other words, downhole mud) around the drill. The measurements can be provided to a hydraulic model that calculates downhole pressure loss in the annulus. Based on this calculation, a calculation of equivalent circulating density (ECD) can be performed. In some implementations, the calculations are performed in real time with respect to the collection of the sensor data. The real time pressure loss and ECD calculations can be used to control bottom hole circulating pressures. The results of the calculations may be used to automatically control drilling operations.