Vibratory Fork Densitometer for Sand Separator Interface Detection
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Solution Overview
Problem
Sand separators in oil and gas operations often clog due to sand accumulation, leading to production downtime and financial losses, as existing technologies lack reliable methods for detecting the liquid/solid interface, prompting a need for improved sand level monitoring.
Innovation Solution
Incorporating a vibratory meter with a vibratory fork densitometer that detects changes in signal strength and phase differences to indicate the liquid/solid interface level, allowing for timely intervention and preventing overfilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sand separators are used to separate sand from liquid/solid mix, then sand removal is achieved, but sand accumulation in the separator causes clogging and requires manual emptying
Solution Approach 1:
The patent implements a detection system that monitors sand accumulation levels before the separator becomes fully clogged. By detecting the liquid/solid interface level in advance, the system enables proactive emptying operations, preventing complete clogging and the associated production downtime.
Solution Approach 2:
The patent employs a detection system that provides real-time feedback on sand accumulation levels within the separator. This feedback mechanism allows the system to monitor the liquid/solid interface and trigger alerts or automated responses when threshold levels are reached, enabling timely intervention to maintain separator functionality.
2Reliability
If manual emptying of sand separator is performed, then sand removal is achieved, but the separator and production equipment become unusable during corrective actions
Solution Approach 1:
By detecting sand accumulation levels before they reach critical thresholds, the system enables scheduling of emptying operations at convenient times rather than forced shutdowns. This preliminary detection allows production to continue uninterrupted while emptying is performed during planned maintenance windows.
Solution Approach 2:
The detection system enables the separator to monitor its own status and provide information about when emptying is needed, allowing for optimized scheduling that minimizes impact on production while ensuring the separator remains functional.
3Device complexity
If sand level monitoring is not implemented, then device complexity is reduced, but sand separator over-filling risk increases
Solution Approach 1:
The patent replaces complex mechanical level monitoring mechanisms with a vibratory detection system that measures changes in vibrational characteristics of the separator wall or internal components. This substitution maintains detection accuracy while reducing mechanical complexity and moving parts that could fail.
Solution Approach 2:
The system detects sand level changes by monitoring changes in vibrational parameters (frequency, amplitude, damping) of a vibratory element coupled to the separator. This parameter-based detection approach provides reliable sand level information without requiring complex mechanical sensors or multiple measurement points.
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 vibratory meter effectively detects the liquid/solid interface, enabling automated drainage and reducing the risk of sand separator clogging, thereby minimizing downtime and financial losses by providing real-time monitoring of sand levels.
Implementation Method 1
a vibratory meter with a vibratory fork densitometer that detects changes in signal strength and phase differences
Data Source
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AI summary
A sand separator is provided that includes a separation chamber and a drain. The sand separator comprises a meter in fluid communication with an interior of the separation chamber, wherein the meter is configured to detect a liquid/solid interface. Meter electronics in electrical communication with the meter are configured to receive a signal from the meter indicating the liquid/solid interface.