Articulating Drill Pipe Guide System for Radial Movement Control
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Solution Overview
Problem
Conventional drill pipe systems face challenges in effectively guiding and stabilizing drill strings and umbilical cables during the drilling process, particularly in preventing undesired radial movement as they are lowered into wellbores or subsea environments.
Innovation Solution
A modular drill pipe guide system with an articulating arm and clamp is positioned on the rig floor, allowing the clamp to encircle the drill string and limit radial movement, while an umbilical guide system secures cables, both systems being portable and adaptable to various drilling rig configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional drill pipe systems are used without a guide system, then the system is simpler, but radial movement of the drill string cannot be effectively controlled
Solution Approach 1:
The guide system is divided into separate functional components: an articulating arm assembly for positioning and a clamp assembly for gripping. This segmentation allows each component to be optimized independently while maintaining overall system simplicity and effectiveness in controlling radial movement.
Solution Approach 2:
The guide system acts as an intermediary device between the drill string and the surrounding environment. The clamp serves as a mediator that applies controlled radial forces to stabilize the drill string during lowering operations, preventing unwanted movement without requiring complex active control systems.
2Adaptability or versatility
If a fixed guide system is used, then structural stability is improved, but adaptability to various drilling rig configurations is reduced
Solution Approach 1:
The articulating arm incorporates dynamic positioning capabilities with multiple degrees of freedom, allowing it to adapt to different drill string positions and rig configurations. This dynamic structure maintains structural stability during operation while providing the versatility needed for various drilling rig setups through adjustable positioning.
Solution Approach 2:
The guide system is designed with universal mounting options and adjustable components that enable it to function across different drilling rig configurations. The articulating arm and clamp assembly can be positioned and oriented to accommodate various operational requirements, making the system versatile without compromising its structural integrity.
3Reliability
If the clamp inner diameter is larger to accommodate the drill string, then ease of operation is improved, but radial movement control is reduced
Solution Approach 1:
The clamp is designed with a localized gripping zone where the inner diameter is reduced at the contact points to provide effective radial movement control. The overall clamp structure maintains sufficient clearance for easy drill string insertion, with the restrictive geometry concentrated only where needed for stabilization during the lowering operation.
Data Source
AI summary
A drill pipe guide system having a support structure configured to be positioned on a rig floor or drillship floor, an articulating arm coupled to the support structure, wherein the articulating arm is coupled to the support structure, wherein the articulating arm is configured to pivot relative to the support structure, and a clamp coupled to the articulating arm, wherein the clamp is configured to encircle a drill string and limit radial movement of the drill string as the drill string is lowered beneath the rig floor or drillship floor.