Pivotable Flow Conduit Mud Pulse Generator for Downhole Telemetry
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Solution Overview
Problem
Existing mud pulse generation systems for telemetry in subterranean wells face limitations in efficiently generating pulses for reliable data communication from downhole instrumentation to the surface, as they often rely on rotating assemblies or linear valves, which may not provide optimal control over pulse duration, frequency, and pressure build-up.
Innovation Solution
A mud pulse generator that utilizes a pivotable central flow conduit with magnetic actuators to deflect the fluid passageway, creating pressure pulses by varying the resistance to flow, allowing for precise control over pulse generation through angular deflection and selective occlusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If rotating assemblies or linear valves are used to generate pulses, then pulse generation is achieved, but control over pulse duration, frequency, and pressure build-up is not optimal
Solution Approach 1:
The patent replaces complex mechanical rotating assemblies or linear valve systems with a simpler pivotable conduit mechanism actuated by magnetic fields. The magnetic actuator deflects the conduit to occlude or open the fluid passage, providing precise control over pulse generation without the complexity of rotating or linearly moving valve components.
Solution Approach 2:
The patent employs a dynamically pivotable conduit that can be deflected between positions to control fluid flow. This dynamic positioning allows precise control over pulse duration and frequency by adjusting the timing and duration of the conduit's deflection, while the magnetic actuation provides easy control without complex mechanical linkages.
2Reliability
If conventional rotating or linear valve systems are used, then pulse generation is possible, but device complexity increases
Solution Approach 1:
The patent substitutes complex mechanical fluid control mechanisms with a magnetic actuation system. The magnetic actuator uses magnetic fields to deflect the conduit, eliminating the need for complex mechanical linkages, rotating parts, or linear valve assemblies, thereby reducing device complexity while maintaining reliable pulse generation for data communication.
Solution Approach 2:
The patent extracts and eliminates the complex mechanical components (rotating assemblies, linear valves) from the system and replaces them with a simpler magnetic actuation mechanism. This extraction of unnecessary complexity while retaining the essential pulse generation function improves reliability by reducing potential failure points.
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 efficient and reliable communication of data from downhole tools to the surface by generating controlled pressure pulses in the fluid column, enhancing data transmission rates and accuracy through precise manipulation of the fluid flow resistance.
Implementation Method 1
magnetic actuators to deflect the fluid passageway
Data Source
AI summary
Method and apparatus for generating fluid pulses in a fluid column, such as within a downhole well, are disclosed. A described example fluid pulse generator utilizes a moveable flow conduit through which at least a portion of a downwardly flowing fluid column will pass. The moveable flow conduit can be moved, such as by pivoting, in and out of registry with other components defining the fluid flow path to provide resistance to flow of a selected duration and pattern, and thereby to generate pressure pulses within the fluid column detectable at the surface. In some examples, magnetic actuators will be used to perform the described pivoting of the moveable flow conduit.