Force-Balanced Reciprocating Valve for Low-Power Pressure Pulses
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Solution Overview
Problem
Existing mud pulse telemetry systems require high mechanical power to generate pressure pulses due to the hydraulic forces exerted on the valve member, which limits their efficiency and adaptability for high data rate communication.
Innovation Solution
A device and method that utilize a force balancing assembly, including a piston member in hydraulic communication with the differential pressure, to counteract the hydraulic forces on the valve member, reducing the mechanical power required to generate pressure pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a valve member is moved relative to a restriction to generate pressure pulses, then communication capability is achieved, but high mechanical power is required due to hydraulic forces on the valve member
Solution Approach 1:
A force balancing assembly with a piston member is introduced to apply a counteracting force that balances the hydraulic force on the valve member. The piston is exposed to differential pressure on one side while the other side is at reference pressure, creating a balancing force that reduces the net force the actuator must overcome, thereby reducing required mechanical power.
Solution Approach 2:
The force balancing assembly acts as an intermediary mechanism between the actuator and the valve member. It transfers and modifies the force relationship, allowing the actuator to operate with reduced power requirements while still achieving the necessary valve actuation for communication.
2Productivity
If hydraulic forces are directly applied to the valve member, then pressure pulse generation is achieved, but mechanical power consumption increases
Solution Approach 1:
The force balancing assembly provides a counterbalancing hydraulic force through the piston member that opposes the directional hydraulic force on the valve member. This reduces the energy consumption of the actuator while maintaining pressure pulse generation capability.
Solution Approach 2:
The system uses hydraulic pressure differentials to achieve force balancing. The piston member is exposed to differential pressure that creates a counteracting force, utilizing hydraulic principles to reduce mechanical power requirements while maintaining the pressure pulse generation function.
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 implementation of the force balancing assembly significantly reduces the mechanical power needed to actuate the valve member, enabling efficient high data rate mud pulse telemetry while maintaining robustness and adaptability.
Implementation Method 1
a piston member in hydraulic communication with the differential pressure, the differential pressure applying a second force on the piston member
Data Source
AI summary
A device for generating pressure pulses includes a valve member disposed in a fluid passageway, the fluid passageway including a restriction, the valve member movable by an actuator relative to the restriction to generate a pressure pulse in a fluid in the fluid passageway based on varying a relative position between the valve member and the restriction and creating a differential pressure across the fluid passageway, the differential pressure applying a first force on the valve member. The device also includes a piston member in hydraulic communication with the differential pressure, the differential pressure applying a second force on the piston member, the piston member having a locomotive connection to the valve member.