Directional Shaped Charge Perforating for Consistent Well Penetration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing well perforating technologies face challenges in efficiently creating targeted perforations in complex well architectures, as the characteristics of shaped charge jets are dependent on various well components and materials, leading to inconsistent penetration depths and profiles.
Innovation Solution
The development of discrete perforating devices with a shaped charge, an initiating mechanism, and a housing that allows for independent deployment and directional control, utilizing varied liner materials and a directional biasing feature to ensure precise jet orientation and penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional shaped charge perforating is used in complex well architectures, then perforation capability is achieved, but penetration depth and profile consistency deteriorate due to dependence on well components and materials
Solution Approach 1:
The patent applies local quality by varying the liner material properties at different locations or sections of the shaped charge. Different liner materials (e.g., copper, zinc, aluminum) are selected for specific zones to optimize jet characteristics for particular well components, achieving consistent perforation profiles across diverse well architectures while adapting to local material requirements.
Solution Approach 2:
The patent implements parameter changes by modifying liner material composition, density, and geometry to control jet velocity, penetration depth, and profile. By adjusting these parameters based on the specific well architecture and target formation, the system achieves both consistent perforation quality and adaptability to different well components and materials.
2Length of moving object
If shaped charge jet characteristics are optimized for deep penetration, then penetration depth is improved, but jet velocity distribution becomes uneven with head traveling 5-10 times faster than tail
Solution Approach 1:
The patent applies asymmetry by designing non-uniform liner geometries and material distributions that compensate for the natural velocity gradient in shaped charge jets. The liner is engineered with varying thickness, density, or material composition along its length to slow down the jet head and accelerate the tail, creating a more uniform velocity distribution that maintains both deep penetration and stable jet composition.
3Ease of operation
If discrete perforating devices are deployed independently without external fixtures, then deployment flexibility is improved, but device complexity increases due to need for self-contained housing and initiating mechanism
Solution Approach 1:
The patent merges multiple functions into a single integrated device structure. The housing simultaneously serves as the containment vessel for the shaped charge, the structural element for deployment, and the mounting structure for the initiating mechanism. This consolidation achieves deployment flexibility without proportionally increasing complexity, as the same structural components fulfill multiple roles.
Solution Approach 2:
The discrete perforating device is designed with universal components that perform multiple functions. The housing provides structural support, containment, and deployment interface; the initiating mechanism integrates with the shaped charge assembly; and the overall device can be deployed through various well architectures. This multi-functionality reduces the need for separate specialized components, balancing flexibility with manageable complexity.
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
Enables controlled and deep penetration of perforations in well casings and formations, enhancing hydrocarbon recovery by allowing for precise alignment and deployment of shaped charges without external fixtures, thus improving well management and access to underground reserves.
Implementation Method 1
detonation of the explosive within the case may be utilized to direct the liner away from the gun and toward the well wall as a means by which to form the noted jet
Implementation Method 2
a shaped charge generally includes a case, explosive pellet material, and a liner member
Implementation Method 3
the jet formed by the detonation of a given shaped charge may pierce a steel casing, cement, and a variety of different types of rock
Data Source
AI summary
The present disclosure relates to a discrete perforating device. The discrete perforating device includes a shaped charge having a casing, an explosive component, and a liner member. The discrete perforating device also includes an initiating mechanism configured to activate the explosive component. Further, the discrete perforating device include a housing that encapsulates the shaped charge and the initiating mechanism.