Retrieving Tool for Coiled Tubing Logging Plug
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Solution Overview
Problem
The coiled tubing logging plug often gets stuck in the fluid tubing of a bypass system, necessitating the removal of the entire bypass system, leading to costly interruptions in fluid extraction and potential damage to the electrical submersible pump.
Innovation Solution
A retrieving tool is designed to be inserted into the through-hole of the coiled tubing logging plug, featuring a movable retrieving element that can couple with the plug to release and retrieve it, allowing the tool to be moved in the opposite direction to extract the plug without disrupting the bypass system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coiled tubing logging plug gets stuck in the fluid tubing, then the bypass system must be removed to retrieve the plug, but this leads to costly interruptions in fluid extraction and potential damage to the electrical submersible pump
Solution Approach 1:
The invention extracts the problematic coiled tubing logging plug from the fluid tubing using a specialized retrieving tool. The tool includes a retrieving element that couples with the plug's retaining sleeve to extract it through the fluid tubing, allowing the plug to be removed without removing the entire bypass system, thus maintaining fluid extraction continuity and preventing pump damage.
Solution Approach 2:
The retrieving tool acts as an intermediary device between the stuck plug and the surface operations team. It provides a controlled method to extract the plug through the fluid tubing using a retrieving element that couples with the retaining sleeve, enabling plug removal without disrupting the bypass system or requiring removal of the electrical submersible pump assembly.
2Reliability
If the entire bypass system is removed to retrieve the stuck plug, then the plug can be retrieved, but the electrical submersible pump and completion are damaged or require replacement
Solution Approach 1:
The invention selectively extracts only the problematic coiled tubing logging plug from the fluid tubing using a retrieving tool, rather than removing the entire bypass system. This targeted extraction preserves the electrical submersible pump and completion integrity, avoiding damage that would occur with complete system removal and replacement.
Solution Approach 2:
The retrieving tool segments the retrieval operation by targeting only the plug and retaining sleeve for extraction, while leaving the fluid tubing, electrical submersible pump, and completion intact. This segmented approach allows selective removal of the stuck component without affecting the integrity of the remaining system elements.
3Productivity
If a retrieving tool is inserted into the through-hole of the coiled tubing logging plug, then the plug can be retrieved without removing the bypass system, but the tool must be designed with specific components to couple with the plug
Solution Approach 1:
The retrieving tool is designed to extract the coiled tubing logging plug through the fluid tubing without removing the bypass system. The tool comprises a tool body that can be inserted through the plug's through-hole and a retrieving element that couples with the retaining sleeve, enabling selective plug extraction while maintaining continuous fluid extraction capability.
Solution Approach 2:
The retrieving element is nested within the tool body, allowing the entire retrieving tool to be inserted through the coiled tubing logging plug's through-hole. The retrieving element can be deployed from within the tool body to couple with the retaining sleeve, providing a compact design that enables plug retrieval without requiring the tool to be larger than the plug opening.
Data Source
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AI summary
The invention relates to a retrieving tool for retrieving a coiled tubing logging plug from a downhole wherein the retrieving tool is insertable into a through hole of the coiled tubing logging plug and comprises a tool body and a retrieving element that is movable relative to the tool body and that is coupleable to the coiled tubing logging plug in order to retrieve the coiled tubing logging plug.