Fracturing Pressure Linkage Control for Sand Blending Coordination
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Solution Overview
Problem
Current fracturing system control software lacks intelligent and coordinated control over upstream and downstream devices, fails to perform self-diagnosis, and does not support remote data transmission and maintenance, making manual control difficult and inefficient.
Innovation Solution
A control system that performs linkage control on fracturing, sand blending, and mixing units, using loop control and look-up table models to adjust pressures and input amounts based on target wellhead pressure, with devices communicating through various methods to achieve stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual control is used for each device of fracturing system, then device complexity is reduced, but linkage control and management of the whole fracturing system cannot be realized
Solution Approach 1:
The patent merges multiple control devices (fracturing control device, sand blending control device, mixing control device) into a unified control system that performs linkage control. The control system integrates pressure control, flow rate control, and coordination between upstream and downstream devices through a centralized control architecture, enabling comprehensive management of the entire fracturing system.
Solution Approach 2:
The control system is designed with multi-functionality to handle various control tasks including pressure regulation, flow rate control, device coordination, and data monitoring. The system can adapt to different operating conditions and perform multiple control functions through a universal control architecture that serves the entire fracturing system.
2Extent of automation
If current fracturing system control software is used, then basic control functions are achieved, but intelligent and coordinated control on devices between upstream and downstream cannot be performed
Solution Approach 1:
The control system implements feedback mechanisms that continuously monitor pressure, flow rate, and other parameters from both upstream and downstream devices. Based on real-time feedback data, the system dynamically adjusts control parameters to achieve intelligent coordinated control, ensuring optimal performance and reliability under varying operating conditions.
Solution Approach 2:
The control system employs dynamic adjustment capabilities to adapt to changing operating conditions. It can real-time modify control parameters, response speeds, and coordination strategies based on actual system state, enabling intelligent control that maintains optimal performance across different scenarios.
3Extent of automation
If current fracturing system control software is used, then device control is achieved, but intelligent self-diagnosis of single device and remote transmission and maintenance of data are not available
Solution Approach 1:
The control system incorporates intelligent self-diagnosis functionality that automatically detects, monitors, and diagnoses device status, faults, and performance parameters. The system can perform self-maintenance activities and provide diagnostic information without requiring manual intervention, reducing operational costs and improving reliability.
Solution Approach 2:
The control system serves as an intermediary that collects, processes, and transmits data between devices and remote systems. It facilitates remote transmission and maintenance of data by acting as a communication bridge, enabling centralized monitoring and control while preserving data integrity and transmission reliability.
Data Source
AI summary
A control system includes: a fracturing control device configured to acquire a target fracturing pressure of a fracturing unit, perform loop control on the fracturing unit by taking the target fracturing pressure as a control target, and set a target sand blending pressure for the sand blending unit; a sand blending control device configured to perform loop control on the sand blending unit by taking the target sand blending pressure as a control target.