Magnetic Sleeve Control Valve for Downhole Data Transmission
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Solution Overview
Problem
Current downhole communication systems for resource exploration and recovery face challenges in effectively transmitting data from downhole sensors to the uphole system, particularly in using acoustical systems that rely on pressure pulses generated by hydraulic fluid, which may not provide reliable or efficient data transfer.
Innovation Solution
A control valve assembly with a magnetic sleeve and solenoid mechanism is introduced, allowing selective control of mud flow to create pressure pulses that can be used to transmit data from downhole sensors to the uphole system, enhancing data transfer efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acoustical systems rely upon passage of pressure pulses generated by hydraulic fluid, then data can be transmitted from downhole to uphole, but the data transfer reliability and efficiency are insufficient
Solution Approach 1:
The patent replaces the conventional hydraulic piston mechanism with a magnetic field-actuated piston system. The piston is equipped with magnetic coupling elements that respond to magnetic field changes generated by an external magnet, enabling mechanical actuation without direct hydraulic pressure application. This substitution improves reliability by eliminating hydraulic fluid dependency and enhances efficiency through precise magnetic field control of the piston movement that generates pressure pulses for data transmission
Solution Approach 2:
The patent utilizes changes in magnetic field parameters (strength, direction, timing) to control piston movement and generate pressure pulses. By modulating the magnetic field parameters in response to sensor data, the system reliably transmits information through pressure pulse patterns, improving both data transfer reliability and efficiency compared to conventional hydraulic systems
2Reliability
If a magnetic sleeve and solenoid mechanism is used to control mud flow, then pressure pulses can be generated for data transmission, but the device complexity increases
Solution Approach 1:
The magnetic sleeve and solenoid assembly serves multiple functions: it acts as a magnetic coupling mechanism for piston actuation, a flow control valve for modulating mud flow, and a communication interface for transmitting data through pressure pulses. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while improving communication reliability
Solution Approach 2:
The magnetic sleeve acts as an intermediary element between the solenoid magnetic field and the piston mechanism. It transmits magnetic force to control piston movement and simultaneously regulates mud flow, enabling reliable data transmission through pressure pulse generation while maintaining a relatively simple overall device structure
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
The control valve assembly enables reliable and efficient transmission of downhole data to uphole operators by generating and modulating pressure pulses, improving communication in resource exploration and recovery operations.
Implementation Method 1
a solenoid mounted to the body adjacent the magnetic sleeve. The solenoid being selectively activated to shift the magnetic sleeve
Implementation Method 2
a magnetic sleeve slidingly mounted to the body... The solenoid being selectively activated to shift the magnetic sleeve
Implementation Method 3
allowing a pulse of mud to flow through the mud flow passage... The pressure pulses are created by moving a piston through a hydraulic fluid
Data Source
AI summary
A control valve assembly includes a body having a mud flow passage provided with a mud flow inlet and a mud flow outlet, a magnetic sleeve slidingly mounted to the body, and a solenoid mounted to the body adjacent the magnetic sleeve. The solenoid being selectively activated to shift the magnetic sleeve between a first position covering the mud flow outlet and a second position exposing the mud flow outlet allowing a pulse of mud to flow through the mud flow passage.