Transient Voltage Suppressor for Perforation Charge Detonation
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Solution Overview
Problem
The existing perforation systems for oil wells face challenges in accurately and reliably detonating perforation charges due to interference from radio frequency (RF) signals and voltage spikes, which can lead to accidental firing and inefficiencies in fluid extraction.
Innovation Solution
The system incorporates RF-safe detonators and a transient voltage suppressor to mitigate RF-induced firing and counter electromotive force (EMF) spikes, ensuring controlled and synchronized detonation of perforation charges through a selective fire mechanism with polarity-defined voltage application and a transient voltage suppressor to safeguard against voltage transients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage is applied to detonate perforation charges, then the perforation operation can be performed, but voltage spikes and RF signals may cause accidental firing
Solution Approach 1:
A transient voltage suppressor is introduced as an intermediary component between the voltage source and the perforation charges. This suppressor acts as a mediator that filters out harmful voltage spikes and RF signals while allowing the necessary detonation voltage to pass through, thereby preventing accidental firing while maintaining reliable controlled detonation
Solution Approach 2:
The system converts the harmful effect of voltage spikes and RF signals into a beneficial filtering mechanism. The transient voltage suppressor is designed to specifically identify and block harmful transient voltages while permitting the intended detonation signal to pass, thus transforming the potential hazard into a protective feature that enhances firing reliability
2Reliability
If transient voltage suppressor is added to prevent voltage spikes, then accidental firing is reduced, but device complexity increases
Solution Approach 1:
The transient voltage suppressor is designed as a simple, inexpensive protective component that can be easily integrated into the existing perforation system. Rather than redesigning the entire system, a relatively simple suppressor device is added to provide the necessary protection, minimizing the increase in overall system complexity while effectively preventing accidental firing
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 ensures reliable and controlled detonation of perforation charges, reducing the risk of accidental firing and improving fluid extraction efficiency by preventing damage from voltage spikes and ensuring consistent perforation across the well.
Implementation Method 1
transient voltages generated in the coil when current flow through the coil changes. These counter electromotive force (EMF) voltage transients
Implementation Method 2
interference from radio frequency (RF) signals and voltage spikes, which can lead to accidental firing
Data Source
AI summary
A perforating system includes a casing collar locator. The casing collar locator includes a coil. The perforating system includes a plurality of perforation charge elements. Each perforation charge element is in a circuit parallel to the coil. The perforating system includes a transient voltage suppressor in a circuit parallel to the coil.