Automated Sand Separator Discharge Control System
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Solution Overview
Problem
Manual processes for sand separation and blowdown operations in hydraulic fracturing are labor-intensive, time-consuming, and not well-suited for managing multi-separator and multi-well systems, leading to worker-related delays and inefficiencies.
Innovation Solution
An automated sand separator discharge system that includes a sand separator downstream of the wellhead, valves for controlled sand discharge, and a control panel to initiate and terminate discharge, perform seal integrity checks, and measure pressure, enabling automated sand quantification and efficient blowdown operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual processes are used for sand separation and blowdown operations, then worker-related delays and labor intensity are reduced, but productivity and operational efficiency deteriorate
Solution Approach 1:
The system enables self-service through automated blowdown operations where the control system independently manages valve actuation, pressure monitoring, and sand discharge without requiring manual worker intervention. The automated sock removal and weighing process eliminates labor-intensive manual handling while maintaining operational functionality.
Solution Approach 2:
Manual mechanical operations are replaced with an automated control system that uses electronic actuators, sensors, and control logic to manage the blowdown process. The system substitutes human labor with automated mechanical and electronic systems for valve control, pressure monitoring, and sand discharge management.
2Measurement precision
If manual sock removal and weighing is performed after each blowdown, then sand quantification accuracy is improved, but time consumption and labor requirements increase
Solution Approach 1:
The system performs self-service through automated sock removal and weighing operations. The control system automatically actuates valves to remove the sock, transfers it to a weighing station, and records the sand quantity without requiring manual worker intervention, thereby eliminating time loss while maintaining measurement precision.
Solution Approach 2:
The automated process ensures continuous useful action by immediately performing sock removal and weighing right after sand discharge, eliminating idle time between operations. The system maintains continuous operational flow from sand separation through quantification without manual interruptions.
3Productivity
If automated control systems are implemented for sand discharge, then operational efficiency and productivity are improved, but device complexity increases
Solution Approach 1:
The control system achieves multi-functionality by integrating multiple operations into a single automated system: valve actuation, pressure monitoring, sand discharge control, sock removal, weighing, and data recording. This universal approach improves productivity across multiple functions while managing complexity through consolidation rather than multiplication of separate systems.
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 automated system reduces labor and time required for sand separation, improves efficiency in multi-separator and multi-well systems, and enhances the management of blowdown operations by minimizing delays and increasing operational precision.
Implementation Method 1
a first transducer connected to the sand discharge conduit between the first and second valves and operative to measure pressure in a portion of the sand discharge conduit that is between the first and second valves and produce a pressure reading indicating the measured pressure
Implementation Method 2
one or more separation devices (e.g., cyclonic separators)
Data Source
AI summary
An automated sand separator discharge system includes a sand separator disposed downstream of a wellhead, an inlet conduit for transporting a process stream to the sand separator, a fluid outlet conduit for transporting a liquid and gas stream from the sand separator, a sand discharge conduit for removing sand from the sand separator, first, second, and third valves disposed along the sand discharge conduit, a first transducer connected between the first and second valves and operative to measure pressure in a portion of the sand discharge conduit and to produce a pressure reading, and a control panel operatively connected to the first, second, and third valves and the first transducer, the control panel being programmed to initiate and terminate discharge of sand from the sand separator, and to determine if the first and second valves are sealing completely when closed.