Central Slip Cone Interconnection for Oilwell Anchoring
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Solution Overview
Problem
Anchoring systems in the resource recovery industry face issues with slips being liberated from cones due to short track lengths, leading to poor set status or loss of slips, which can result in operational inefficiencies and increased inventory needs.
Innovation Solution
A slip and cone arrangement featuring a centrally located cone interconnection feature and a slip retention feature, with a bifurcated engagement section and track flanges positioned medially for enhanced engagement with the cone, allowing for greater radial travel and improved slip retention, including a stop to prevent disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional side track slips are used, then the slip system is simple in construction, but the track length is short causing slips to be liberated from the cone
Solution Approach 1:
The patent moves the track engagement from the traditional side track configuration to a central longitudinal configuration. The central interconnection feature extends along the longitudinal axis of the slip body, allowing engagement with the cone along the length of the slip rather than at the side, thereby increasing the effective track length and improving retention reliability
Solution Approach 2:
The central interconnection feature is divided into multiple segments including a head portion, body portion, and leg portions that can be separately engaged with corresponding features on the cone. This segmentation allows for distributed engagement points along the longitudinal axis, increasing overall retention reliability while maintaining a relatively simple overall structure
2Length of moving object
If shorter track lengths are used, then the slip system is more compact, but slips can be liberated from the cone under some conditions
Solution Approach 1:
The patent transitions from short side tracks to a long central longitudinal interconnection feature that extends along the axis of the slip. This dimensional reconfiguration allows the track length to be increased without increasing the radial or lateral dimensions, maintaining compactness while improving retention reliability through extended engagement length
3Adaptability or versatility
If more tools are used to accommodate different casing sizes, then the range of casing sizes covered increases, but inventory requirements increase
Solution Approach 1:
The central interconnection feature is designed with adjustable or variable geometric parameters such as the angle of the engagement surfaces, the length of the interconnection, and the position of engagement points. These parameter variations allow a single slip design to accommodate multiple casing sizes and cone geometries, increasing versatility while reducing the number of different tool types needed in inventory
Data Source
AI summary
A slip and cone arrangement including a slip having a centrally located cone interconnection feature, and a cone having a slip retention feature engageable with the interconnection feature. A slip including a body, the body having a T section, and an engagement section, the engagement section having a centrally located cone interconnection feature.