Non-Threaded Tubular Connection for Linear Joining and Alignment
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Solution Overview
Problem
The existing methods of joining tubular components in tubing strings often rely on threaded connections, which can limit utility and increase difficulty due to the need for relative rotation, making it challenging to maintain alignment and integrate control lines.
Innovation Solution
A system that connects tubular components using non-circular transverse cross-sections, allowing linear engagement and alignment, with a seal and locking mechanism to maintain pressure integrity and torque resistance, enabling the integration of control lines and various components without rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If threaded connectors are used to join tubular components, then the connection strength and sealing are improved, but the ease of operation deteriorates due to the need for relative rotation
Solution Approach 1:
Instead of using traditional threaded connectors that require rotational motion to form connections, the patent inverts the approach by using a linear motion connection system. The connector features a non-circular transverse cross-section that engages with a corresponding recess through simple linear movement, eliminating the need for rotation while maintaining connection integrity
Solution Approach 2:
The patent employs asymmetric geometry by designing the connector with a non-circular transverse cross-section. This asymmetric shape prevents rotation and ensures proper alignment during linear engagement, while the corresponding recess is shaped to mate with it. The asymmetry is key to achieving both ease of operation and connection strength
2Reliability
If threaded connectors are used to join tubular components, then the connection reliability is improved, but the adaptability deteriorates due to alignment limitations
Solution Approach 1:
The non-circular transverse cross-section creates an asymmetric geometry that provides inherent alignment features. This asymmetric design ensures that components can only engage in the correct orientation, maintaining connection reliability while improving adaptability for various configurations and control line integrations
3Ease of operation
If non-circular transverse cross-sections are used for linear engagement, then the ease of operation and adaptability are improved, but the device complexity increases due to the locking mechanism
Solution Approach 1:
The connection system is segmented into distinct functional components: the non-circular engagement features for alignment and connection, the seal element for pressure integrity, and the locking mechanism for securing the connection. This segmentation allows each component to perform its specific function efficiently while keeping the overall system manageable
4Adaptability or versatility
If non-circular transverse cross-sections are used for linear engagement, then the adaptability is improved by providing space for control lines, but the manufacturing precision requirements increase
Solution Approach 1:
The asymmetric non-circular cross-section is designed with intentional geometric features that provide built-in alignment and positioning. This asymmetric geometry, while requiring precise manufacturing, actually simplifies assembly by providing inherent alignment cues that reduce the need for complex adjustment procedures during installation
Data Source
AI summary
A technique facilitates connection of tubulars along a tubing string via a linear motion. A first tubular is provided with a first connector end having a non-circular transverse cross-section, and a second tubular is provided with a second connector end having a corresponding non-circular transverse cross-section. The non-circular cross-section and the corresponding non-circular cross-section are designed to matingly engage when the first and second tubulars are moved linearly toward each other to form a tubing string. A seal is provided to seal the first connector end with the second connector end once linearly engaged. A locking mechanism may be employed to linearly lock the first connector end with the second connector end.