Radial Flow Plunger Lift Lubricator for Reliable Plunger Catching
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Solution Overview
Problem
Existing plunger lift systems face challenges in reliably and automatically catching a continuous style plunger in the lubricator body while maintaining adequate internal flow bypass area.
Innovation Solution
A radial flow plunger lift lubricator with a plunger holding area, internal bypass passages, and upper and lower flow paths, which allows fluid communication between the interior of the lubricator and the bypass passages, enabling efficient fluid flow and plunger positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional flanged or threaded connection configurations are used, then connection strength is improved, but internal flow bypass area is reduced
Solution Approach 1:
The patent transitions from traditional linear axial flow paths to a radial flow configuration, directing fluid flow perpendicular to the plunger axis. This dimensional change allows bypass passages to be formed in the radial direction around the plunger, significantly increasing the available bypass area without compromising connection strength, as the radial architecture distributes structural loads more effectively.
Solution Approach 2:
The lubricator body is divided into multiple segmented bypass passages arranged radially around the plunger. These segmented radial passages provide multiple parallel flow paths, collectively offering sufficient total bypass area while maintaining structural integrity through the distributed architecture.
2Reliability
If a plunger catching mechanism is added, then plunger holding reliability is improved, but device complexity is increased
Solution Approach 1:
The plunger catching mechanism is designed to operate automatically based on the plunger's position and the radial flow dynamics. The system self-regulates plunger retention without requiring external control systems or complex actuation mechanisms, achieving reliable plunger holding while minimizing added complexity.
Solution Approach 2:
The radial flow field acts as an intermediary that facilitates automatic plunger catching. The fluid dynamics in the radial passages create forces that naturally guide and secure the plunger in the correct position, eliminating the need for complex mechanical catching devices.
3Productivity
If continuous style plunger is used, then production efficiency is improved, but automatic catching reliability is reduced
Solution Approach 1:
The patent changes the flow direction parameter from axial to radial, which fundamentally alters the fluid-plunger interaction dynamics. This parameter change creates flow patterns that work in conjunction with continuous plungers, maintaining both high production efficiency and reliable automatic catching through the radial flow field's natural guiding and securing effects.
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 radial flow design provides adequate internal flow bypass area, allowing for reliable plunger catching and maintaining efficient fluid flow, thereby optimizing plunger wear life and production efficiency.
Implementation Method 1
A radial flow plunger lift lubricator with a plunger holding area, internal bypass passages, and upper and lower flow paths, which allows fluid communication between the interior of the lubricator and the bypass passages
Data Source
AI summary
A plunger lift lubricator having an internal bypass configuration which enables a plunger to be reliably captured and while still allowing the flow of fluid up through the lubricator before the fluid is directed radially outward and down the internal bypass passageways. The lubricator can comprise both an upper flow path and a lower flow path and can be configured such that a plunger can travel all the way up to shift a valve in the plunger if needed.