Top Entry Wireline Apparatus Roller Chain Guide
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Solution Overview
Problem
Conventional top entry wireline apparatuses are large, bulky, and require disassembly for repairs, making them inadequate for supporting the weight of wirelines and adapting to the twists and turns of drilling tubes, posing safety and efficiency issues during drilling operations.
Innovation Solution
A compact top entry wireline apparatus utilizing a plurality of roller chains to guide the wireline, with a separable door for easy setup and a pack-off body for sealing, allowing the apparatus to be universally adapted to various top drive systems without disassembly, and featuring a turnbuckle assembly for flexibility and a lubrication system to maintain wireline integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sheave and pulley systems are used for top entry wireline apparatus, then the system can support wireline weight and guide wireline through drilling tubes, but the apparatus becomes large and bulky requiring disassembly for repairs
Solution Approach 1:
The wireline apparatus is divided into modular components including a separate wireline spool, guide mechanism with rollers, and a packer assembly that can be independently installed and removed. This segmentation allows the apparatus to maintain full functionality while reducing overall complexity and enabling easier maintenance without complete disassembly.
Solution Approach 2:
The apparatus transitions from a traditional horizontal sheave-pulley arrangement to a vertical configuration where the wireline spool is positioned above the guide mechanism. This dimensional change allows the wireline to feed downward through the drilling tube axis, compacting the apparatus footprint while maintaining all necessary support and guidance functions.
2Ease of operation
If conventional top entry wireline apparatus is used, then wireline can be inserted into wellbore, but the apparatus cannot adapt to twists and turns of drilling tubes during drilling operations
Solution Approach 1:
The guide mechanism incorporates multiple rollers arranged in an arc that can dynamically adjust their positions to follow the curvature and twists of the drilling tube. This dynamic adaptation allows the wireline to be smoothly guided through varying tube orientations without binding or damage, maintaining ease of operation throughout drilling movements.
Solution Approach 2:
The apparatus utilizes a flexible wireline spool design that can change its unwinding parameters (speed, tension, angle) in response to drilling tube movements. The spool rotation speed and wireline payout rate are dynamically adjusted to match the drilling tube's twists and turns, ensuring continuous adaptability while maintaining smooth wireline insertion.
3Strength
If conventional wireline apparatus is used, then wireline can be supported, but the system is dangerous if inadequate to support wireline weight or adapt to drilling tube movements
Solution Approach 1:
The apparatus incorporates a friction-based braking system and tension damping mechanisms that are pre-configured to cushion sudden wireline drops or over-tensioning events. These safety features are built into the guide mechanism and spool assembly, providing automatic protection against wireline damage or equipment failure before harmful conditions can develop during drilling operations.
Data Source
AI summary
A top entry wireline apparatus may be used to insert or manipulate an electrical conduit into a wellbore. The top entry wireline apparatus may include a roller chain configuration that may include a plurality of roller bodies. A method of using the top entry wireline apparatus is also included.