Downhole Dart Activation Control for Premature Seating Prevention
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Solution Overview
Problem
Intelligent darts deployed downhole can prematurely actuate and become seated in undesirable locations, leading to unnecessary operational costs and potential well abandonment.
Innovation Solution
A wellbore material transfer system with a series of downhole tool apparatuses and darts configured in different activation states, utilizing activation and proximity triggering configurations to ensure precise dart deployment and coupling for effective downhole operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If darts are deployed downhole to actuate downhole operations, then downhole operations can be performed, but darts may prematurely actuate and become seated in undesirable locations
Solution Approach 1:
The system performs preliminary actions by deploying darts in an inactive state and activating them only when they reach the desired location. The activation mechanism is triggered by specific conditions (magnetic field, pressure differential, or mechanical action) that occur only at the target location, ensuring the dart actsuates at the correct position rather than prematurely during deployment.
Solution Approach 2:
The patent introduces intermediary activation mechanisms (magnetic fields, pressure differentials, or mechanical triggers) that mediate between the dart deployment system and the dart actuation. These intermediaries remain dormant during transport and only activate the dart when specific conditions are met at the target location, preventing premature actuation while enabling reliable operation.
2Reliability
If activation mechanisms are added to control dart actuation, then premature actuation is prevented, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical activation systems with simpler alternative mechanisms. Instead of requiring complex mechanical linkages or electronic control systems, the invention uses passive triggers such as magnetic fields, pressure differentials, or simple mechanical actions that occur naturally during dart deployment and seating, thereby reducing overall system complexity while maintaining reliable controlled activation.
Solution Approach 2:
The activation mechanisms are designed to be self-activating based on environmental conditions or operational parameters that automatically occur during normal dart deployment. The darts activate themselves when they encounter the correct conditions (specific magnetic field strength, pressure differential, or mechanical action) without requiring external control systems, reducing the complexity of the overall activation system.
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
Enables controlled and efficient fluid communication between the surface and subterranean formations, reducing operational costs and preventing premature dart actuation, thereby enhancing wellbore operations.
Implementation Method 1
an activation tool configured for generating an activation tool field within an activation zone
Implementation Method 2
a respective proximity triggering configuration that is configured for generating a field for activating the transitioning of the dart
Data Source
AI summary
There is provided a system for stimulating a hydrocarbon-comprising reservoir and producing therefrom. Actuatable darts are deployed for effectuating downhole operations, including effectuating flow communications. Apparatuses, systems, and methods are described for mitigating premature actuation of the darts, as well as mitigating consequences ties to prematurely activated darts.