Chemical Injection Control Using Real-Time Well Fluid Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The inefficiency in fluid extraction processes due to infrequent monitoring and adjustment of chemical injection rates in wells, leading to equipment corrosion, solid buildup, and foamy emulsions, which increases operational costs and reduces extraction efficiency.
Innovation Solution
A chemical injection system that uses real-time pressure sensing and ion concentration analysis to adjust the injection rate of chemicals frequently, predicting and preventing operational events such as corrosion and solid deposition by determining flowrates and ion concentrations at the well site, rather than relying on infrequent laboratory tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If real-time monitoring and adjustment of chemical injection rates is implemented, then extraction efficiency is improved and equipment corrosion is prevented, but device complexity increases
Solution Approach 1:
The system implements continuous feedback loops where produced fluid properties (ion concentration, flowrate) are monitored in real-time and automatically fed back to adjust chemical injection rates. This closed-loop control prevents equipment corrosion and maintains optimal extraction efficiency by dynamically responding to changing well conditions without requiring complex manual intervention.
Solution Approach 2:
The chemical injection system performs self-adjustment based on automatic monitoring of produced fluid characteristics. The system uses embedded sensors and control logic to autonomously determine optimal chemical dosing rates, eliminating the need for frequent manual laboratory testing and adjustments, thereby improving extraction efficiency while managing system complexity through automation.
2Measurement precision
If frequent laboratory testing is performed to monitor produced fluid properties, then accurate detection of corrosion and deposition conditions is achieved, but loss of time and operational efficiency increases
Solution Approach 1:
The system replaces traditional mechanical laboratory testing procedures with electronic sensing and automated analysis. Inline sensors continuously monitor ion concentration and flowrate, instantly detecting conditions that indicate corrosion or deposition risks. This substitution eliminates time-consuming sample collection, transport, and laboratory analysis while maintaining high measurement precision through real-time data acquisition.
Solution Approach 2:
The monitoring system operates continuously without interruption, constantly measuring produced fluid properties and adjusting chemical injection rates in real-time. This continuous operation eliminates the periodic gaps inherent in scheduled laboratory testing, ensuring that equipment corrosion and solid deposition are detected and prevented immediately when conditions change, thereby maximizing extraction efficiency and minimizing time losses.
3Reliability
If chemical injection rate is increased to prevent corrosion and deposition, then equipment protection is improved, but loss of substance and operational costs increase
Solution Approach 1:
The chemical injection rate is dynamically adjusted based on real-time monitoring of produced fluid properties. The system increases chemical dosing only when sensor data indicates conditions conducive to corrosion or deposition (such as elevated ion concentrations or flowrate changes), and reduces dosing when conditions are favorable. This dynamic adjustment maintains reliable equipment protection while minimizing unnecessary chemical consumption and associated costs.
Solution Approach 2:
The system changes operational parameters (chemical injection rate) in response to changes in produced fluid characteristics. By monitoring parameters such as ion concentration and flowrate, the system adjusts chemical dosing levels to match actual equipment protection needs, preventing both under-dosing (which would compromise reliability) and over-dosing (which would increase chemical consumption and costs).
Data Source
AI summary
A chemical injection system for a resource extraction system includes a controller having a memory and a processor. The memory stores instructions that cause the processor to receive a first pressure from a first pressure sensor of the resource extraction system, receive a second pressure from a second pressure sensor of the resource extraction system, determine a flowrate of a produced fluid of the resource extraction system based on the first pressure and the second pressure, determine an ion concentration of the produced fluid, and adjust an injection rate of a chemical into the resource extraction system based on the flowrate of the produced fluid, the ion concentration of the produced fluid, or both.