Movable Wall Filter Tool for Drilling Fluid
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Solution Overview
Problem
Conventional drilling fluid filters require removal from the wellbore for cleaning, leading to significant downtime and uncertainty about filter fullness, which can result in lost communication with downhole components.
Innovation Solution
A filter tool with a movable exterior wall and filtration system that allows for continuous filtering and material collection, featuring a sensor to measure material accumulation and a motor to adjust the exterior wall position, enabling the filter to be emptied without removal from the wellbore.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the filter tool is removed from the wellbore for cleaning, then the collected material can be emptied, but drilling operations experience significant downtime and communication with downhole components is lost
Solution Approach 1:
The patent extracts the material discharge function from the traditional filter tool design by adding a separate discharge port and control mechanism. This allows the collection chamber to be emptied independently without removing the entire filter tool from the wellbore, thus resolving the contradiction between material removal and operational continuity.
Solution Approach 2:
The patent introduces a movable control mechanism that dynamically opens or closes the discharge port based on collection chamber fullness. This dynamic control enables the filter tool to transition between filtering mode and discharge mode while remaining in position, eliminating downtime associated with tool removal and reinstallation.
2Loss of substance
If the filter tool is removed from the wellbore for cleaning, then the collected material can be emptied, but communication with downhole components is lost
Solution Approach 1:
The patent extracts the discharge function from the main tool body by providing a separate discharge port and control mechanism. This allows material to be emptied without moving the filter tool, thereby maintaining continuous communication with downhole components and improving operational reliability.
Solution Approach 2:
The filter tool is equipped with sensors that automatically detect when the collection chamber is full and trigger the discharge mechanism. This self-service capability allows the tool to empty itself without human intervention or tool removal, maintaining continuous operation and communication integrity.
3Quantity of substance
If conventional filter tools are used, then material can be filtered from drilling fluid, but it is uncertain when the filter is full requiring guesswork
Solution Approach 1:
The patent incorporates sensors that provide real-time feedback on the collection chamber's fill status. This feedback mechanism eliminates guesswork by providing accurate information about when the filter is full, allowing for timely discharge operations and continuous monitoring of material collection quantity.
Solution Approach 2:
The patent replaces manual inspection methods with electronic sensors and automated control systems. These sensors detect material accumulation and provide precise information about filter fullness, substituting mechanical guesswork with electronic measurement and information feedback.
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
This solution allows for continuous drilling fluid filtration without losing communication with downhole components, reducing downtime and eliminating the need for guesswork about filter fullness, as the filter can be emptied in place.
Implementation Method 1
The filtration system may include at least one screen to allow a drilling fluid being circulated through the wellbore to pass through the filter tool while filtering material from the drilling fluid and collecting material in the collection chamber
Data Source
AI summary
A filter tool for a wellbore may include an outer housing, a filtration system, at least one filter tool sensor, and a filter motor. The outer housing may have an interior wall comprising at least one port and an exterior wall defining an exterior surface of the filter tool. The exterior wall may be movable between a first position in which the exterior wall covers the at least one port in the interior wall and a second position in which the exterior wall uncovers the at least one port in the interior wall. The interior wall of the outer housing and the filtration system may cooperate to define a collection chamber. The filter motor may move the exterior wall of the outer housing between the first position and the second position. Embodiments also include systems and methods employing the filter tool.