Slip Anchor Camming Mechanism for Uniform Casing Engagement
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Solution Overview
Problem
Existing anchoring tools in wellbore environments suffer from uneven loading and potential damage to casing due to simultaneous longitudinal and radial movement, necessitating improved anchoring technologies.
Innovation Solution
A slip body with radially outward engagement surfaces and opposing ramps on lateral surfaces, combined with compression bodies that move relative to each other, allowing controlled radial movement and even load distribution through camming action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If slips move longitudinally and radially simultaneously along a ramp, then anchoring function is achieved, but uneven loading and casing damage occur
Solution Approach 1:
The slip body is divided into multiple segments with individual ramps, allowing each segment to engage the casing independently. This segmentation distributes the anchoring load across multiple contact points rather than concentrating it at a single location, thereby achieving reliable anchoring while preventing uneven loading and casing damage.
Solution Approach 2:
Each segment of the slip body is equipped with its own ramp structure optimized for local engagement with the casing. This local quality ensures that each contact point distributes load uniformly, preventing the uneven loading that occurs with traditional single-ramp designs while maintaining effective anchoring function.
2Reliability
If compression bodies move relative to each other to actuate the slip, then anchoring is achieved, but complex mechanical movement is required
Solution Approach 1:
The compression bodies are designed to move relative to each other in a controlled manner, transforming axial compression force into radial expansion of the slip body. This dynamic mechanism allows the slip to be actuated from a compact configuration to an expanded anchoring configuration, achieving reliable anchoring while managing mechanical complexity through controlled movement.
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
The solution ensures even load distribution across inserts, reducing deformation of the casing and enhancing anchoring performance by uniformly distributing load as the slip body moves radially.
Implementation Method 1
camming against the first plurality of ramps and/or the second plurality of ramps of the slip body to move the slip body radially
Data Source
AI summary
A slip body includes a first plurality of ramps a second plurality of ramps. An anchor, includes a first compression body, and a second compression body, at least one being movable relative to the other, and a slip body disposed between the first and second compression bodies. A method for anchoring a tool in a borehole, including disposing the anchor above in the borehole, reducing a distance between the first and second compression bodies, camming against the first plurality of ramps and/or the second plurality of ramps of the slip body to move the slip body radially. A wellbore system, including a borehole in a subsurface formation, a string in the borehole, and a slip as described above, disposed within or as a part of the string.