Diverter Latch Assembly Rotational Release Mechanism
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Solution Overview
Problem
Existing diverter systems in multilateral well systems face challenges in controlled release and withdrawal, often resulting in damage to the diverter assembly or other downhole components due to the high snap-out force required for disengagement.
Innovation Solution
A diverter latch assembly with a swivel mechanism that allows rotational release, enabling controlled disengagement and withdrawal with reduced risk of damage, comprising an upper latch assembly coupled with a lower latch assembly via a swivel, and featuring a releasable latch that engages a tieback receptacle for secure sealing and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a substantial snap out force is used to disengage the drilling diverter, then the diverter can be securely engaged during drilling operations, but damage occurs to the diverter assembly or other downhole components during disengagement
Solution Approach 1:
The release mechanism is divided into two independent latch assemblies (first and second latch assemblies) that can be released separately. This segmentation allows the diverter to be disengaged in controlled stages rather than requiring a single high-force snap-out action, thereby reducing damage risk while maintaining secure engagement during operation.
Solution Approach 2:
The system transitions from a static, high-force release mechanism to a dynamic, controlled release process. The rotational release system enables the upper latch assembly to rotate and disengage sequentially, converting a sudden high-force event into a controlled, progressive release that reduces harmful impacts on downhole components.
2Ease of operation
If a rotational release system is implemented, then controlled release and withdrawal is achieved with reduced damage risk, but the device complexity increases
Solution Approach 1:
The release mechanism merges two latch assemblies into a single integrated system where the upper latch assembly rotates to release both latches sequentially. This combining approach achieves controlled release functionality while minimizing the number of separate components, thereby managing device complexity despite the added rotational mechanism.
Data Source
AI summary
A system and methodology facilitates use of a diverter latch assembly in cooperation with a lateral wellbore. The diverter latch assembly comprises an upper latch assembly coupled with a lower latch assembly via a swivel. The upper latch assembly also comprises a releasable latch positioned to engage a tieback receptacle located in the well. The swivel and the releasable latch are designed to enable rotation of the releasable latch relative to a tubing of the lower latch assembly during release of the diverter latch assembly from the tieback receptacle. The rotational release system helps provide controlled release and withdrawal of the diverter latch assembly while reducing risk of damage to the diverter latch assembly or other downhole components.