Well Tool Bolt Compartment Connection for Rotation Stability
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Solution Overview
Problem
Well tools are often long and costly, difficult to assemble and disassemble, and face challenges with axial and rotational movements due to threaded connections, which can lead to unintentional disconnection.
Innovation Solution
A well tool device with a bolt compartment connection system that allows for axial and rotational flexibility without disconnection, using recesses and locking bolts to securely connect subsections, reducing the need for threaded connections and simplifying assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If threaded connections are used to connect subsections, then the connection is simple and standard, but relative rotation causes the connections to become disconnected or partially disconnected
Solution Approach 1:
The connection system is divided into separate functional elements: a connector with external threading on one subsection and a receptacle with internal threading on the other subsection. This segmentation allows independent optimization of each component and enables the connector to be inserted into the receptacle, creating a reliable connection that prevents disconnection during rotation while maintaining manufacturing simplicity through standardized threading features.
2Adaptability or versatility
If well tools are made long to accommodate all necessary parts, then the functionality is complete, but the material cost and manufacturing cost increase
Solution Approach 1:
The connector is designed to be inserted into and nested within the receptacle, creating a compact assembled structure. This nesting approach allows all necessary functional parts to be contained within a reduced overall length, maintaining functional completeness while decreasing material requirements and manufacturing costs associated with producing longer tool assemblies.
3Adaptability or versatility
If multiple parts are assembled to create the well tool, then the functionality is achieved, but the assembly operation becomes time consuming
Solution Approach 1:
The connector and receptacle are designed as integrated assemblies where the connector inserts into and locks within the receptacle. This merging of multiple connection functions into a single integrated interface reduces the number of separate assembly operations required, thereby decreasing assembly time while maintaining the functional capability provided by the multi-part structure.
4Ease of manufacture
If threaded connections are used, then the connection is standardized, but the relative rotation causes unintentional disconnection
Solution Approach 1:
The connection system transitions from a static threaded connection to a dynamic insertable connector that engages with the receptacle in a controlled manner. The connector can be inserted into the receptacle and remains securely connected during rotation, providing rotation stability while maintaining standardization through the use of conventional threading features on both the connector and receptacle.
Data Source
AI summary
A well tool device may include a first subsection and a second subsection connected to each other. The first subsection comprises a first connector having an outwardly facing first connection interface and the second subsection comprises a second connector having an inwardly facing second connection interface, where the second connector is provided radially outside of the first connector. The first connection interface is facing towards the second connection interface. The first connection interface comprises a first recess provided in the first connector. The second connection interface comprises a second recess provided in the second connector. The first and second recesses together are forming a bolt compartment. The well tool device further comprises a locking bolt provided in the bolt compartment formed by the first and second recesses in order to connect the first and second subsections to each other. The bolt compartment formed by the first and second recesses has an opening in the outer surface of the second connector.