Self-Actuating Casing Guide and Clamp Assembly
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Solution Overview
Problem
Current methods for holding casing strings during extraction from boreholes are inefficient, requiring extensive setup time, being unsafe, and prone to contamination, with hydraulic clamps needing external power and being susceptible to damage from harsh environments.
Innovation Solution
A self-aligning and self-tightening mechanical guide and clamp assembly that uses gripping arms to securely hold casing strings without external hydraulic power, capable of operating on uneven surfaces and in adverse conditions, with minimal physical handling and no bolts to undo.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If hydraulic clamps are used to hold casing strings, then clamping force is sufficient, but the device requires external hydraulic power and is susceptible to damage from harsh environments
Solution Approach 1:
The mechanical clamp assembly is designed to be self-actuating, using the weight of the casing string itself to trigger the clamping action through gravity-responsive mechanisms. The assembly requires no external power source, hydraulic systems, or complex control mechanisms - it automatically engages and holds the casing string through purely mechanical means, making it self-sufficient in harsh construction environments.
2Device complexity
If mechanical clamps are used to hold casing strings, then no external power is needed, but setup time is extensive and handling is physically demanding
Solution Approach 1:
The mechanical clamp assembly is pre-configured with adjustable arms and positioning mechanisms that are prepared in advance for quick deployment. The assembly includes pre-positioned mechanical components that allow workers to rapidly engage and adjust the clamps without extensive setup procedures, reducing the time and physical effort required for installation.
3Device complexity
If traditional holding methods are used, then equipment is simple, but safety is compromised and contamination risk increases
Solution Approach 1:
The mechanical clamp assembly serves as an intermediary device between the casing string and the ground/support structure. It provides a controlled, clean interface that prevents direct contact between the casing and potentially contaminating surfaces, while also distributing loads safely and preventing uncontrolled slipping or movement that could create safety hazards.
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
Facilitates quick and safe removal of casing sections in harsh environments, reducing setup time and preventing slipping back into the borehole, while maintaining operational safety and reducing environmental impact.
Implementation Method 1
The gripping arms are designed to grip the casing string securely
Data Source
AI summary
An apparatus and method for use in the initial positioning, guiding, clamping and removal of a tubular casing used to produce a borehole, including a mainframe with an opening configured to receive, clamp onto and centralize the casing within the mainframe opening.