Multi-Part Shaped Charge Liner for Tailored Jet Penetration
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Solution Overview
Problem
Existing shaped charge liners face limitations in achieving optimal jet penetration and control due to material density constraints, particularly in green compacts, which affect the depth and profile of perforations in hydrocarbon wells.
Innovation Solution
A multi-part shaped charge liner is developed, comprising a first liner portion and a second liner portion made of different materials, where the second liner portion is coupled to the first, enhancing density and momentum upon detonation to form a jet with tailored properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a solid copper or zinc liner is used to generate a jet with considerable stretch, then the depth of penetration is improved, but the material density and momentum are limited
Solution Approach 1:
The patent applies composite materials by combining multiple liner portions made of different materials (e.g., copper and tungsten) to create a shaped charge liner with optimized properties. The copper portion provides ductility and jet formation capability, while the tungsten portion contributes high density and momentum, resolving the contradiction between penetration depth and material density by integrating complementary material properties in a single composite structure.
Solution Approach 2:
The patent segments the liner into multiple distinct portions (e.g., a copper liner portion and a tungsten liner portion) that can be independently selected and positioned. This segmentation allows each portion to contribute its specific material properties to the overall jet performance, enabling optimization of both density and penetration depth through strategic material placement rather than relying on a single homogeneous material.
2Ease of manufacture
If a single-material liner is used, then the manufacturing process is simplified, but the jet characteristics cannot be tailored to specific wellbore conditions
Solution Approach 1:
The liner is segmented into multiple portions that can be independently manufactured and then assembled. This segmentation enables customization of jet characteristics for different wellbore conditions by selecting appropriate materials and geometries for each portion, while still maintaining manufacturing feasibility through modular construction rather than requiring complex monolithic material processing.
Solution Approach 2:
Different portions of the liner are assigned different materials and geometries tailored to specific functional requirements. For example, one portion may be optimized for jet initiation while another is optimized for jet penetration, allowing the liner to exhibit locally optimized properties that collectively achieve the desired overall performance for specific wellbore applications.
3Force
If the liner material density is increased, then the jet momentum is improved, but the jet stretch and penetration profile become less controllable
Solution Approach 1:
The composite liner structure combines high-density materials (like tungsten) with more ductile materials (like copper) in specific configurations. The high-density portion provides the necessary momentum for deep penetration, while the ductile portion maintains jet coherence and stretch capability, thereby achieving both high momentum and controllable jet shape simultaneously through material complementarity.
Solution Approach 2:
Different regions of the liner are assigned different material properties to balance momentum and stretch requirements. High-density materials are positioned where momentum generation is critical, while more ductile materials are positioned where jet formation and stretch are needed, allowing local optimization of material properties to achieve overall jet performance targets.
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 multi-part design allows for adjustable jet characteristics, such as depth and width, improving perforation effectiveness in various wellbore conditions by increasing density and momentum, thus enhancing hydrocarbon recovery.
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
enhancing density and momentum upon detonation to form a jet with tailored properties
Data Source
AI summary
The present disclosure relates to a shaped charge liner. The shaped charge liner includes a first liner portion formed a first material. The first liner portion has an apex and a skirt section that define an interior volume of the first liner portion. The shaped charge liner also includes a second liner portion formed of a second material. The second liner portion is coupled to the first liner portion such that the second liner portion is an edge of the interior volume.