Coaxial Filter Valve for Wireline Passage in Drilling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drilling systems face challenges in removing foreign objects and larger particles from drilling fluids without interfering with the passage of wirelines or slicklines, which is crucial for maintaining clean drilling fluids and facilitating tool retrieval or explosive back-off operations.
Innovation Solution
A filter device with a valve configuration that allows for the filtration of drilling fluids while enabling the passage of wirelines or slicklines by opening when sufficient force is applied, ensuring that the filter device does not obstruct the flow path, allowing tools to reach downhole components without the need for multiple trips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter or screen is placed within the drill string above sensitive tools, then drilling fluid filtration is improved, but wireline passage capability deteriorates
Solution Approach 1:
The filter device is divided into multiple functional segments: an outer filter screen for particle removal, an inner filter screen for additional filtration, and a valve mechanism for controlling wireline passage. This segmentation allows each component to perform its specific function without interfering with others, resolving the contradiction between maintaining filtration and enabling wireline access.
Solution Approach 2:
The valve mechanism transitions between closed and open states dynamically. When closed, it maintains the filtration function by directing fluid through both filter screens. When opened (by applying force to the drag reduction device), it creates a bypass path for wirelines and slicklines, allowing temporary suspension of filtration during retrieval operations.
2Reliability
If a filter device is installed in the drill string, then particle removal is improved, but device complexity increases
Solution Approach 1:
The filter device performs multiple functions within a single integrated structure: it filters drilling fluid through dual screens, controls flow distribution via a valve mechanism, and enables wireline passage when activated. This multi-functionality reduces the need for separate devices and simplifies the overall system architecture despite the sophisticated internal mechanisms.
Data Source
AI summary
A filter device housed within a body component. The filter device can include an outer filter and an inner filter positioned coaxially within the outer filter. The outer and inner filters may be composed of a material having mesh, slots, holes, or any other openings being of a sufficient size and shape to restrict passage of items of a predetermined size or larger. Formed between the inner and outer filters is a first annular space into which fluid that is provided down the drill string may enter. The filter device may also include a valve within the internal bore which regulates passage of wellbore fluid provided to the drill string, or for a wireline or slickline, to pass through the filter device in order to access other components of the drill string downhole from the filter device.