Wellbore Cleaning Tool With Oscillator
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Solution Overview
Problem
Current wellbore cleaning tools, such as mechanical scrapers and brushes, are effective but lack an enhanced cleaning action to efficiently remove solids and debris from wellbore surfaces.
Innovation Solution
A wellbore cleaning assembly with an oscillator that generates oscillating movements of cleaning elements relative to the work string, providing enhanced scrubbing action by axially, radially, or circumferentially oscillating the cleaning elements during translation within the wellbore, utilizing a fluid-actuated flow pulsing device and force transmission elements to achieve effective debris removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical cleaning tools (scrapers, brushes) are used to clean the wellbore, then cleaning effectiveness is achieved, but the cleaning action is insufficient to efficiently remove solids and debris
Solution Approach 1:
The patent applies mechanical vibration by incorporating an oscillator that generates oscillating movements of the cleaning elements relative to the wellbore wall. This vibration enhances the scrubbing action of the cleaning elements, enabling more effective removal of solids and debris from the wellbore surface, thereby resolving the contradiction between cleaning efficiency and effectiveness
Solution Approach 2:
The patent implements dynamics by making the cleaning elements movable relative to the wellbore wall through oscillating movements generated by the oscillator. This dynamic action allows the cleaning elements to adapt their position and motion during operation, enhancing their ability to effectively remove debris while maintaining reliable cleaning performance
2Productivity
If cleaning elements are translated along the wellbore, then cleaning coverage is achieved, but the scrubbing action is insufficient without oscillation
Solution Approach 1:
The oscillator generates oscillating movements that superimpose on the translational motion of the cleaning assembly. This vibration enhances the scrubbing action at each point of contact between the cleaning elements and wellbore wall, improving cleaning action quality while maintaining cleaning speed through efficient debris removal
Solution Approach 2:
The oscillator produces periodic oscillating movements of the cleaning elements during their translation along the wellbore. This periodic action creates repeated scrubbing cycles at each location, enhancing the quality of cleaning action while maintaining productivity through systematic coverage
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 oscillating cleaning assembly significantly improves the cleaning action, effectively removing solids and debris from wellbore surfaces, enhancing the efficiency of the cleaning process by imparting a scrubbing action that improves the removal of particles and fluids.
Implementation Method 1
an oscillator coupled to the at least one cleaning element, for generating an oscillating movement of the at least one cleaning element relative to the work string
Data Source
AI summary
A wellbore cleaning assembly is run into a wellbore to be cleaned on a work string. The cleaning assembly comprises a number of cleaning elements for cleaning a wall of the wellbore; and an oscillator coupled to the at least one cleaning element by a force transmission element, for generating an axial oscillating movement of the at least one cleaning element relative to the work string.