Composite Rope Socket Structure for Uniform Armored Cable Loading
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Solution Overview
Problem
The mechanical and electrical connections of wireline tool strings to surface equipment are time-consuming and prone to failure due to non-uniform loading of armored layers in wirelines.
Innovation Solution
A rope socket apparatus is introduced, featuring a housing with spacers that space apart armor wires from a conductor core, filled with a plastic material to uniformly distribute tensile loads and improve mechanical and electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rope socket connections are used, then the connection process is simple, but the mechanical and electrical connections are prone to failure due to non-uniform loading of armored layers
Solution Approach 1:
A plastic material is introduced as an intermediary substance between the armor wires and the conductor core, filling the interstices and bonding to both surfaces. This mediator ensures uniform load distribution from the armor wires to the conductor core, preventing non-uniform loading and connection failures while maintaining a relatively simple socket structure.
Solution Approach 2:
The rope socket employs a composite structure combining metal armor wires, plastic bonding material, and conductor core. This composite approach allows each material to perform its optimal function: armor wires provide mechanical strength, plastic provides uniform load distribution and electrical insulation, and the conductor core provides electrical conductivity, collectively improving connection reliability.
2Productivity
If armored layers are not uniformly loaded, then the connection process is faster, but the mechanical and electrical connections are prone to failure
Solution Approach 1:
The plastic material is selectively placed in the interstices between armor wires and around the conductor core, providing localized bonding and load distribution exactly where needed. This local quality enhancement ensures uniform loading at critical interfaces without requiring complex overall structural modifications, maintaining connection speed while improving reliability.
3Strength
If armor wires are spaced apart from conductor core, then tensile loads are uniformly distributed, but the device complexity increases
Solution Approach 1:
The plastic material serves multiple functions simultaneously: it spaces the armor wires from the conductor core to ensure uniform tensile load distribution, bonds the armor wires to the socket housing, provides electrical insulation, and fills voids in the structure. This self-service approach achieves improved strength without proportionally increasing device complexity.
Data Source
AI summary
Apparatus and methods for coupling a rope socket with an armored cable. The armored cable includes a conductor core having one or more cables for transmitting electrical and/or optical signals and at least one layer of armor wires wound around the conductor core. The rope socket includes a housing having an uphole end through which the armored cable extends into the housing and a downhole end through which the conductor core extends from the housing to a component of downhole equipment suspended in a wellbore by the armored cable. The armor wires are arranged inside of the housing so that they are spaced apart at least locally from the conductor core. A plastic material disposed within the housing fills interstices each defined by one or more surfaces of one or more of the conductor core, one or more of the armor wires, and the housing.