Downhole Sleeve Apparatus Port Alignment
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Solution Overview
Problem
Existing actuatable sleeves in downhole systems may not fully open radial ports due to excessive pressure drop or high pressure, leading to incomplete port exposure and potential locking issues, which limits fluid communication and flow efficiency.
Innovation Solution
A sleeve apparatus with a tubular having multiple ports and a movable sleeve with apertures misaligned in the closed position, allowing for a shorter longitudinal shifting distance to achieve full port exposure, ensuring alignment and locking in the open position, thus minimizing pressure drop and ensuring complete port opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the radial ports are made longer to provide sufficient fluid communication area, then the fluid flow capacity is improved, but the pressure drop during sleeve activation increases causing the sleeve to fail reaching full displacement
Solution Approach 1:
The sleeve is segmented with multiple discrete apertures distributed along its length rather than using a single continuous opening. This segmentation allows fluid to communicate through multiple smaller pathways simultaneously, maintaining adequate flow capacity while reducing the pressure drop across any single port, thereby enabling the sleeve to achieve full displacement
Solution Approach 2:
The invention transitions from a single-plane port configuration to a multi-dimensional aperture distribution along the sleeve length. By distributing apertures in the longitudinal dimension, the system achieves cumulative flow capacity equivalent to longer ports while minimizing the pressure drop associated with any individual opening
2Reliability
If the sleeve is designed to travel a longer distance to fully expose the ports, then complete port exposure is achieved, but the pressure drop prevents the sleeve from reaching the end of its displacement
Solution Approach 1:
The sleeve is divided into multiple sections with distributed apertures along its length. As the sleeve moves, different aperture sections are exposed to the ports at different stages, ensuring complete port exposure is achieved progressively rather than requiring the entire sleeve to travel the full distance, thereby overcoming pressure drop limitations
3Reliability
If the sleeve displacement distance is reduced to minimize pressure drop, then activation reliability is improved, but the ports may not be fully exposed
Solution Approach 1:
Multiple apertures are distributed along the sleeve length at different longitudinal positions. This segmentation allows the sleeve to expose multiple port sections simultaneously or sequentially over a shorter displacement distance, achieving complete port exposure while maintaining reduced activation distance and high reliability
Solution Approach 2:
Multiple aperture openings along the sleeve are combined to provide cumulative flow capacity equivalent to a single long port. This merging of multiple smaller openings achieves the same functional result as a long port while allowing the sleeve to travel a shorter distance, thereby resolving the contradiction between activation reliability and port exposure length
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 solution allows for high flow area access with minimal sleeve activation distance, ensuring efficient fluid communication and preventing incomplete port opening, even with longer port lengths, by aligning apertures with ports in the open condition, thereby enhancing fluid flow and reducing pressure-related issues.
Implementation Method 1
hydraulic pressure within the interior is increased to move the sleeve 12
Data Source
AI summary
A sleeve apparatus having a longitudinal axis and an interior further includes a tubular having a plurality of ports providing a length of fluidic access between the interior and an exterior of the tubular, the length measured with respect to the longitudinal axis; and, a sleeve disposed within the tubular and configured to move longitudinally with respect to the longitudinal axis. The sleeve further has a plurality of apertures misaligned with the plurality of ports in a closed condition of the sleeve apparatus and at least substantially aligned with the plurality of ports in a fully open condition of the sleeve apparatus, and a plurality of non-apertured sections aligned with the plurality of ports in the closed condition. A longitudinal shifting distance of the sleeve to move the sleeve apparatus from the closed condition to the fully open condition is less than the length of fluidic access.