Sensor-Integrated Vent Sub for Lubricator Fluid Overflow Control
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Solution Overview
Problem
Current lubricator systems in oil and gas operations face challenges in efficiently managing fluid flow and detection within the lubricator, particularly in hydraulic fracturing systems, where accurate fluid presence and overflow detection are crucial for safe and effective operations.
Innovation Solution
The introduction of a vent sub with integrated vent sub valves and sensors, such as flow switches or RFID readers, coupled with a controller to manage fluid flow, ensures precise detection and control of fluid presence and overflow, preventing overfilling or underfilling by actuating valves and a fluid transport device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional lubricator systems are used without integrated sensors and valves, then the device complexity is reduced, but the measurement precision of fluid presence and overflow detection deteriorates
Solution Approach 1:
The patent combines multiple functions (fluid detection, valve control, overflow prevention) into a single integrated vent sub assembly. The vent sub includes sensors, valves, and control mechanisms all housed in one component that attaches to the lubricator, eliminating the need for separate external monitoring and control systems.
Solution Approach 2:
The vent sub serves multiple functions simultaneously: it detects fluid presence via sensors, controls fluid flow via integrated valves, prevents overflow through automated monitoring, and provides a unified interface for both injection and circulation modes. This multi-functionality reduces the need for multiple separate devices.
2Reliability
If manual fluid management is used in lubricator systems, then the device complexity is reduced, but the reliability of fluid management deteriorates
Solution Approach 1:
The vent sub incorporates sensors that continuously monitor fluid presence and provide real-time feedback to the integrated control system. This feedback mechanism enables automated adjustment of valves and pump operations, ensuring reliable fluid management without manual intervention and preventing both overfilling and underfilling conditions.
Solution Approach 2:
The system performs self-monitoring and self-regulation through integrated sensors and control mechanisms. The vent sub automatically detects fluid levels, activates valves when needed, and adjusts operations based on real-time conditions, eliminating the need for external manual management while maintaining high reliability.
3Productivity
If separate detection and control systems are used, then the device complexity is reduced, but the productivity of lubricator operations deteriorates
Solution Approach 1:
The vent sub merges detection sensors, control valves, and monitoring functions into a single integrated unit that operates in unison with the lubricator. This integration eliminates coordination delays between separate systems and enables seamless transition between injection and circulation modes, significantly improving operational productivity.
Data Source
AI summary
An apparatus, system, and method according to which one or more sensors are adapted to detect a presence or absence of fluid entering, or before entering, a lubricator, within the lubricator, exiting, or after exiting, the lubricator, or any combination thereof, while fluid flow is received into the lubricator, the lubricator being operably coupled to a wellhead used in oil and gas operations. Based on the one or more sensors detecting the presence or absence of fluid, additional fluid flow into the lubricator is impeded.