Dual-Viscometer Drilling Event Detection for Real-Time Mud Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drilling technologies lack effective real-time monitoring and calibration methods for drilling fluid viscosity, leading to undetected drilling events that can result in increased costs or catastrophic well losses.
Innovation Solution
Utilizing a single-point viscometer in conjunction with a non-single-point viscometer, such as a Fann 35 or Baralogix® DRU, for continuous real-time viscosity and density measurements, and integrating these with an information system for automated event detection and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time viscosity monitoring is implemented using dual viscometers, then drilling event detection capability is improved, but device complexity increases
Solution Approach 1:
The patent combines a single-point viscometer and a non-single-point viscometer into a unified monitoring system that measures drilling fluid viscosity at two different locations simultaneously. This merging of measurement techniques enables comprehensive drilling event detection while managing system complexity through integrated data processing and comparison algorithms.
2Measurement precision
If continuous real-time viscosity measurements are performed at multiple points, then measurement precision is improved, but loss of time increases due to data processing requirements
Solution Approach 1:
The system implements continuous feedback by constantly comparing viscosity measurements from the single-point viscometer and non-single-point viscometer. When discrepancies exceed predetermined thresholds, the system immediately triggers drilling event alerts, enabling real-time decision-making without significant time loss despite continuous monitoring.
3Reliability
If dual viscometer system is deployed for comprehensive monitoring, then reliability of drilling event detection is improved, but ease of operation decreases due to calibration requirements
Solution Approach 1:
The system performs self-calibration by automatically comparing measurements from both viscometers and using the non-single-point viscometer as a reference standard. This self-service calibration approach maintains high detection reliability while minimizing manual intervention and simplifying operational procedures.
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 early detection of drilling events, improving drilling efficiency and safety by providing real-time data for proactive adjustments, reducing the risk of well losses and optimizing drilling operations.
Implementation Method 1
The single point viscosity measurement can be calibrated based on the response of a typical oilfield rheometer
Implementation Method 2
Settling equipment or a separation vessel, such as a shale shaker, may receive a slurry of the drilling fluid and rock cuttings (drill cuttings) from the borehole. The shale shaker may separate rock cuttings from the drilling fluid.
Data Source
AI summary
A variety of methods and apparatus are disclosed, including, in one embodiment, detecting a drilling event, involving flowing a drilling fluid from a wellbore being drilled through a separator, removing rock cuttings from the drilling fluid by the separator, discharging the drilling fluid from the separator without the rock cuttings removed to a mud pit, measuring a first viscosity of the drilling fluid upstream of the mud pit with a single point viscometer, measuring a second viscosity of the drilling fluid in the mud pit or downstream of the mud pit with a second viscometer that is not a single point viscometer, and detecting a drilling event associated with drilling of the wellbore by comparing the first viscosity with the second viscosity.