Self-Orienting Perforating Gun Assembly for Charge Phasing
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Solution Overview
Problem
Existing perforating guns face challenges in simplifying assembly procedures, providing generic components for different gun housings, achieving adaptable charge phasing, and ensuring accurate orientation of shaped charges, which are critical for effective perforation in wellbores.
Innovation Solution
A modular perforating gun platform system with interchangeable components, including a charge carrier and a first rotation assembly, allows for generic components to be used across various gun housings, and ensures accurate orientation and phasing of shaped charges through a self-orienting internal assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional perforating gun assembly procedures are used, then assembly can be completed, but the assembly process is complex and time-consuming due to multiple parts and connections required
Solution Approach 1:
The internal assembly is segmented into modular components (charge carrier, rotation assembly, bearing assemblies) that can be independently manufactured and assembled, reducing overall complexity while maintaining functionality
Solution Approach 2:
The rotation assembly and bearing assemblies are designed as universal components that can be used across different gun housing sizes, reducing the variety of parts needed and simplifying assembly procedures
2Adaptability or versatility
If traditional non-generic components are used, then each gun housing can be customized, but components are not interchangeable across different gun housings
Solution Approach 1:
The rotation assembly and bearing assemblies are designed with standardized interfaces and dimensions that allow them to function across multiple gun housing sizes, enabling component interchangeability while maintaining adaptability to different configurations
Solution Approach 2:
The design allows certain parameters (such as bearing size or rotation assembly dimensions) to be adjusted based on gun housing specifications, while maintaining the same fundamental component architecture and interface standards
3Manufacturing precision
If fixed orientation components are used, then assembly is simpler, but accurate orientation and phasing of shaped charges cannot be ensured
Solution Approach 1:
The rotation assembly introduces controlled dynamic capability, allowing the internal components to rotate to precise angular positions during operation, thereby achieving accurate charge orientation and phasing while maintaining a relatively simple mechanical structure
Solution Approach 2:
The bearing assemblies are designed to self-align and maintain precise rotational positioning through their inherent mechanical properties, eliminating the need for complex external orientation control mechanisms
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 system simplifies assembly, enhances adaptability, and ensures precise orientation of charges, improving the efficiency and effectiveness of perforation operations in wellbores.
Implementation Method 1
two bearing assemblies spaced apart and configured to receive rotation therebetween
Implementation Method 2
A gravimetric orientation mechanism may be included within the internal assembly
Data Source
AI summary
A self-orienting internal assembly for use in a perforating gun housing may include a charge carrier and a first rotation assembly coupled to the charge carrier. The charge carrier may include a shaped charge holder configured to hold a shaped charge and a detonator holder configured to receive a detonator therein and coupled to a first end of the shaped charge holder. The first rotation assembly being configured to contact an interior surface of the perforating gun housing.