Expandable Metal Joint for Multilateral Junction Sealing
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Solution Overview
Problem
Traditional joints that simultaneously anchor and seal two different parts are limited by geometry, cost, and functionality, particularly as they often require extreme heat for welding or brazing, which can damage corrosion-resistant surfaces, and are restricted to round tubular geometries.
Innovation Solution
The use of expandable metal joints that transform into a hard, fluid-impermeable material upon activation, providing a self-healing and self-repairing solution for anchoring and sealing across various geometries without the need for extreme heat, and can be used with threads, lock-rings, and other locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional welding or brazing methods are used to join two different parts, then strong anchoring is achieved, but extreme heat damages corrosion-resistant surfaces
Solution Approach 1:
The patent replaces thermal joining methods (welding/brazing) with a mechanical expansion system. An expandable metal joint is inserted into the tubular and expanded using hydraulic or mechanical force, creating anchoring through radial expansion against the tubular wall without applying heat that would damage corrosion-resistant surfaces.
Solution Approach 2:
The expandable metal joint changes its physical parameters (volume, radial dimension) from a compact initial state to an expanded final state. This parameter change enables the joint to anchor securely within the tubular while avoiding the harmful thermal effects of traditional welding or brazing methods.
2Reliability
If traditional sealing elements or inserts are used to achieve simultaneous anchoring and sealing, then sealing function is improved, but device complexity increases
Solution Approach 1:
The patent merges the anchoring function and sealing function into a single integrated expandable metal joint. When the joint expands, it simultaneously anchors to the tubular wall and creates a seal, eliminating the need for separate sealing elements or inserts and reducing overall device complexity.
Solution Approach 2:
The expandable metal joint serves multiple functions: it provides mechanical anchoring through radial expansion and simultaneously creates a fluid seal against the tubular wall. This multi-functional design simplifies the overall joining system compared to traditional methods requiring separate anchoring and sealing components.
3Ease of manufacture
If traditional threads or lock-rings are used for joining, then ease of manufacture is improved, but adaptability to different geometries is limited
Solution Approach 1:
The expandable metal joint provides universal applicability across different tubular geometries (round, oval, square, rectangular) while maintaining ease of manufacture. The joint can be manufactured in a standard compact form and then expanded in-situ to adapt to any tubular cross-section, combining manufacturing simplicity with geometric versatility.
Solution Approach 2:
The expandable metal joint transitions from a static compact manufacturing form to a dynamic expanded state that adapts to the specific geometry of the tubular. This dynamic transformation allows the same joint design to be manufactured once and then adapted to various geometries during installation, maintaining ease of manufacture while achieving versatility.
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 expandable metal joints offer a cost-effective, quick, and efficient solution for joining dissimilar materials, maintaining 360-degree contact, and are suitable for complex geometries, while meeting corrosion resistance standards, thus overcoming the limitations of traditional methods.
Implementation Method 1
the expanded metal joint comprising the metal that has expanded in response to hydrolysis
Data Source
AI summary
Provided is a multilateral junction. The multilateral junction, in one aspect, includes a y-block. The multilateral junction additionally includes a mainbore leg coupled to the y-block, the mainbore leg defining a second overlapping space, and a lateral bore leg coupled to the y-block, the lateral bore leg defining a third overlapping space. The multilateral junction, in this aspect, additionally includes an expanded metal joint located in at least a portion of the second overlapping space or the third overlapping space, the expanded metal joint comprising a metal that has expanded in response to hydrolysis.