Downhole Toolstring Integrating Plugging, Punching, and Cutting
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Solution Overview
Problem
Current downhole operations for well preparation, such as plugging, punching, and cutting, typically require multiple wireline runs, leading to prolonged operational time and increased rigging and equipment costs due to the need for separate runs for each operation.
Innovation Solution
A downhole apparatus comprising a tool string with a plug setting tool, tubing punching tool, and tubing cutting tool housed within a sleeve, allowing for the performance of all three operations in a single run by releasing the sleeve to set the plug and operate the tools independently, with the ability to also install a junk basket and measure tubular conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate wireline runs are performed for plugging, punching, and cutting operations, then each operation can be performed with dedicated tools, but the operational time and rigging costs increase significantly
Solution Approach 1:
The patent combines multiple separate downhole operations (plugging, punching, and cutting) into a single integrated toolstring that can perform all operations during one wireline run. The toolstring includes a plug setting tool, a punching tool, and a cutting tool all connected in series, allowing sequential execution of operations without removing the toolstring from the wellbore, thereby eliminating multiple rigging cycles and reducing operational time.
Solution Approach 2:
The toolstring is designed as a universal multi-functional device that can perform plugging, punching, and cutting operations. The plug setting tool can install barrier plugs of different types, the punching tool can create holes for fluid circulation, and the cutting tool can cut the production tubular at various positions, making the same toolstring applicable for multiple different operations that traditionally required separate specialized tools.
2Adaptability or versatility
If multiple separate wireline runs are performed for each operation, then specialized tools can be used for each specific task, but the number of rigging sequences and equipment costs increase
Solution Approach 1:
The integrated toolstring is segmented into distinct functional modules: a plug setting tool section, a punching tool section, and a cutting tool section. Each module can be independently operated and controlled, allowing the system to perform different operations selectively. The modular segmentation enables the complex multi-functional toolstring to be managed through independent control of each segment, reducing the operational complexity despite the increased versatility.
3Productivity
If a single integrated toolstring is used for plugging, punching, and cutting, then operational time and costs are reduced, but the device complexity and toolstring design become more challenging
Solution Approach 1:
The toolstring design employs a nested structure where the punching tool and cutting tool are positioned within or alongside the plug setting tool assembly. The various tool components are arranged in a compact nested configuration along the wireline, allowing multiple tools to be housed within the constraints of a single toolstring diameter while maintaining independent operability of each function.
Data Source
AI summary
A downhole apparatus including a sleeve, a tool string, a plug, a means for setting the plug wherein an upper portion of the sleeve is connectable to a lower portion of the tool string, and a lower portion of the sleeve is arranged to receive the plug and the means for setting the plug. A method for using the downhole apparatus (1) is disclosed.