Conductive Fluid Flexible Hose for Downhole Electrical Signal Transmission
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Solution Overview
Problem
Current downhole communication methods, such as wireline and coiled tubing, face challenges with weight, size, and operational complexity, particularly in providing efficient electrical communication between downhole devices and surface locations without requiring additional electrical cables, which limits versatility and increases costs.
Innovation Solution
A flexible hose system that unwinds from a reel, filled with a conductive fluid acting as an electrical path, allowing for electrical signal transmission between downhole devices and surface locations, reducing the need for additional cables and enhancing versatility by using the fluid communication path for both hydraulic and electrical operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireline operations are used to transmit electrical signals downhole, then electrical communication is achieved, but additional electrical cables are required which increase device complexity and weight
Solution Approach 1:
The patent combines hydraulic fluid communication and electrical signal transmission into a single flexible hose system. The conductive fluid serves dual purposes: maintaining hydraulic pressure for tool operation and conducting electrical signals for communication and power, eliminating the need for separate electrical cables and reducing overall system complexity
Solution Approach 2:
The flexible hose is designed as a multi-functional component that simultaneously performs hydraulic fluid transport and electrical signal transmission. The conductive fluid within the hose provides both hydraulic function (pressure transmission) and electrical function (signal conduction), making the single hose universal for multiple operations
2Reliability
If coiled tubing is used for downhole operations, then hydraulic communication is achieved, but the system becomes heavy and bulky with significant rig-up requirements
Solution Approach 1:
The patent replaces rigid coiled tubing with a flexible hose that can be unwound from a compact reel. This flexible construction dramatically reduces the weight and bulk of the system while maintaining hydraulic communication capability, and allows for much faster deployment without heavy rig-up equipment
Solution Approach 2:
The system uses hydraulic pressure transmitted through the flexible hose to deploy and position the downhole tool. The conductive fluid serves as the hydraulic medium, allowing the tool to be pushed downhole or positioned using fluid pressure rather than mechanical lifting equipment
3Ease of operation
If traditional flexible hose without conductive fluid is used, then deployment is simple, but electrical signal transmission cannot be achieved
Solution Approach 1:
The patent changes the electrical parameter of the hydraulic fluid by making it conductive through the addition of conductive particles or electrolytes. This parameter change allows the fluid to transmit electrical signals while maintaining all its hydraulic functions, enabling dual-purpose operation without complicating the deployment process
Solution Approach 2:
The conductive fluid acts as an intermediary substance that bridges the gap between hydraulic and electrical systems. It mediates between the mechanical deployment simplicity of a flexible hose and the electrical transmission requirements, allowing both functions to coexist through a single medium
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 decreases the size and weight of the flexible hose while maintaining functionality, allowing reliable electrical signal transmission even if the hose stretches, and improves operational flexibility by utilizing the fluid path for both hydraulic and electrical communication, reducing the need for additional electrical cables and enhancing system versatility.
Implementation Method 1
providing a conductive fluid inside the flexible hose as an electrical path; and transmitting the electrical signal through the conductive fluid from one of the downhole device and the surface location to the other
Data Source
AI summary
A method of transmitting an electrical signal between a downhole device and a surface location is provided, the method including unwinding a flexible hose from a reel at the surface location and deploying the hose down a wellbore, wherein the downhole device is attached at a downhole end of the flexible hose, providing a conductive fluid inside the flexible hose as an electrical path, and transmitting the electrical signal through the conductive fluid from one of the downhole device and the surface location to the other of the downhole device and the surface location.