Movable Deflector Ramp for Multilateral Well Access
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Solution Overview
Problem
Current multilateral well drilling techniques require multiple trips and complex operations to access and stimulate multiple lateral wellbores, leading to inefficiencies and increased operational costs.
Innovation Solution
A deflector assembly with a movable deflector ramp that cycles between three positions, allowing for efficient access and stimulation of multiple lateral wellbores in a single trip by guiding downhole tools through a deflector window, reducing pipe trips and enabling simultaneous access to all laterals during construction, stimulation, and clean-up phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional multilateral well drilling techniques are used, then multiple trips and complex operations are required to access and stimulate multiple lateral wellbores, but this leads to increased operational costs and reduced efficiency
Solution Approach 1:
The deflector ramp is designed as a movable component that can cycle between three different positions (first, second, and third positions) in response to tool movement. This dynamic positioning allows the same deflector assembly to guide tools to different lateral wellbores sequentially, eliminating the need for multiple separate operations and reducing overall operational complexity while maintaining high drilling efficiency across multiple laterals
Solution Approach 2:
The deflector assembly serves multiple functions through its movable ramp mechanism. A single deflector assembly can access multiple lateral wellbores in different positions, perform construction operations, stimulation operations, and clean-up operations sequentially. This multi-functional design replaces what would traditionally require multiple separate tools and operations, directly reducing operational complexity while improving productivity
2Ease of operation
If multiple trips are made to access different lateral wellbores, then complete access to all laterals is achieved, but pipe trips and operational time increase
Solution Approach 1:
The deflector ramp dynamically repositions between three locations in response to tool insertion and withdrawal. When a tool is inserted, the ramp moves to guide it to the appropriate lateral wellbore. After the tool completes its operation and is withdrawn, the ramp automatically returns to its initial position, ready to guide the next tool to a different lateral. This dynamic cycling enables multiple lateral accesses within a single trip, eliminating repeated pipe trips and significant time loss
Solution Approach 2:
The deflector ramp is pre-positioned in the first position before tool insertion. As the tool moves through the deflector body, the ramp proactively cycles to the second position to guide the tool to the first lateral wellbore. After tool withdrawal, the ramp automatically returns to the first position, preparing for the next lateral access. This preliminary positioning and automatic cycling eliminates the need for manual repositioning operations and reduces trip time
Data Source
AI summary
Provided, in one aspect, is a deflector assembly. The deflector assembly, in one embodiment, includes a deflector body having a deflector window located therein, and a deflector ramp positioned at least partially across the deflector window, the deflector ramp configured to move between first (①), second (②) and third (③) different positions when a downhole tool moves back and forth within the deflector body.