Well Pipe Cutting Tool for Submersible Pump Replacement
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Solution Overview
Problem
Existing technologies fail to efficiently and cost-effectively remove and replace damaged piping within a water well without requiring the drilling of a new well, as they do not account for the compromised workspace of a well casing with a submersible pump.
Innovation Solution
A tool with a spring-loaded cutting blade attached to an extraction pipe, allowing for the cutting and removal of the original pipe within the well casing, enabling the installation of a new submersible pump and piping without drilling a new well.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a new well is drilled to replace damaged piping, then the system can be restored, but the cost and time required increase significantly
Solution Approach 1:
The patent extracts the damaged pipe section from the well casing using a retrieval tool with a cutting blade and retrieval mechanism. The tool cuts the damaged pipe and retrieves it through the well casing, allowing the well to be reused without drilling a new well, thus saving time and resources while restoring system reliability
Solution Approach 2:
The patent employs preliminary action by pre-positioning the retrieval tool in the well casing before cutting the damaged pipe. The tool is inserted, positioned, and secured before the cutting operation, ensuring that the pipe can be efficiently retrieved and the well reused, thereby reducing the overall time and cost of restoration
2Reliability
If a new well is drilled to replace damaged piping, then the system can be restored, but the cost increases significantly
Solution Approach 1:
The patent extracts the damaged pipe section from the well casing using a retrieval tool with a cutting blade and retrieval mechanism. The tool cuts the damaged pipe and retrieves it through the well casing, allowing the well to be reused without drilling a new well, thus saving time and resources while restoring system reliability
Solution Approach 2:
The patent discards the damaged pipe section by cutting it from the well casing and retrieving it for removal. The well casing is recovered and reused, eliminating the need to drill a new well and significantly reducing restoration costs while maintaining system reliability
3Ease of operation
If underwater pipe cutting torches are used, then pipe cutting is possible, but they cannot cut and extract pipe within well casing
Solution Approach 1:
The patent creates a universal tool that combines multiple functions: the retrieval tool includes a cutting blade for cutting the pipe, a retrieval mechanism for extracting the pipe, and a trigger mechanism for controlling the blade. This multi-functional device can operate within the confined space of a well casing, making it adaptable to the specific constraints of well environment while maintaining ease of operation
Solution Approach 2:
The patent employs dynamics by using a spring-loaded cutting blade that can be actuated through a trigger mechanism. The blade transitions from a retracted safe position to an extended cutting position, allowing the tool to adapt to different operational phases (insertion, cutting, retrieval) within the well casing environment
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 the efficient and cost-effective replacement of submersible pumps and piping within existing wells by cutting and retrieving the original pipe, allowing continued use of the well without the need for new drilling.
Implementation Method 1
The cutting blade is attached to a spring mechanism so as to allow horizontal rotation of the cutting blade. The spring mechanism biases the blade inwardly so as to ensure that the cutting edge of the cutting blade makes contact with the original water pipe.
Implementation Method 2
The extraction pipe, along with the apparatus, is then rotated to allow the blade to cut into the original pipe and sever the original pipe.
Data Source
AI summary
A water pump pipe cutoff tool provides a means to cut and retrieve an existing original water pipe from within an existing well in such cases where a faulty submersible pump is trapped within said well. By cutting and removing the original water pipe, a new submersible pump can be installed into the well, thereby avoiding the expense of drilling a new well.