Downhole Wire Routing via Tubular Grooves and Pressure Equalization
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Solution Overview
Problem
Existing methods for routing wires in subterranean wellbores face challenges in efficiently transmitting power and data to downhole tools while maintaining wire survivability and service life, particularly due to pressure equalization issues and the need for complex connectors and service loops.
Innovation Solution
A wire routing apparatus featuring a tubular body with grooves forming channels between the central bore and outer surface, allowing wires to be routed through ports and sealed apertures, and optionally using hydraulic fluid to equalize pressure within the channels, thereby enhancing wire survivability and eliminating the need for separate hydraulic paths and service loops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are routed through complex connectors and service loops in existing methods, then wire routing is achieved, but device complexity increases and wire survivability decreases
Solution Approach 1:
The patent extracts and eliminates the complex connectors and service loops from the wire routing system. Wires are routed directly through ports in the tubular body housing, bypassing the need for separate connectors and service loops, thereby reducing device complexity while improving wire survivability.
Solution Approach 2:
Wire routing channels are formed as integral features of the tubular body housing during manufacturing. This preliminary integration means wires can be routed directly through pre-formed ports and channels without requiring complex assembly of separate connectors, reducing both complexity and improving reliability.
2Reliability
If pressure equalization is not implemented in existing wire routing methods, then routing is simpler, but wire survivability decreases due to pressure issues
Solution Approach 1:
The tubular body housing serves multiple functions: it provides structural support, contains wire routing channels, and enables pressure equalization. The same housing structure that routes wires also provides pressure equalization ports, eliminating the need for separate pressure equalization components and maintaining wire survivability without increasing overall device complexity.
Solution Approach 2:
The patent merges the pressure equalization function with the wire routing structure. Pressure equalization ports are integrated into the tubular body housing at the same locations where wires are routed, combining two functions into a single structural element, thereby achieving pressure equalization without adding separate complex components.
3Stress or pressure
If separate hydraulic paths are used in existing methods, then pressure control is achieved, but device complexity and tool length increase
Solution Approach 1:
The wire routing channels in the tubular body housing serve dual purposes: they guide wires and simultaneously function as hydraulic fluid pathways. This multi-functionality allows pressure control through the same structure used for wire routing, eliminating the need for separate hydraulic paths and reducing device complexity and tool length.
Solution Approach 2:
The patent combines wire routing and hydraulic fluid flow paths into the same physical channels within the tubular body housing. This integration means that a single structural feature accomplishes both wire guidance and hydraulic pressure control, reducing the overall complexity and length of the tool while maintaining effective pressure control.
4Ease of operation
If service loops are included in existing wire routing methods, then wire flexibility is maintained, but device complexity and tool length increase
Solution Approach 1:
The patent extracts and eliminates service loops from the wire routing system. Wires are routed directly through linear channels and ports in the tubular body housing without requiring service loops, thereby reducing device complexity and tool length while maintaining adequate wire flexibility through the direct routing path.
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
This solution enables reliable transmission of electrical power and telemetry data to downhole tools, increases wire survivability, and simplifies the downhole tool design by reducing the overall tool length and eliminating the need for complex connectors and service loops, thereby enhancing tool reliability and operational efficiency.
Implementation Method 1
using hydraulic fluid to equalize pressure within the channels
Data Source
AI summary
Downhole wire routing apparatus including a tubular body having an outer circumferential surface and a central bore extending along a longitudinal axis. The tubular body includes one or more channels, capable of receiving one or more wires, disposed within the tubular body between the central bore and outer circumferential surface. Method and system for routing wires to one or more downhole tools.