Well Lift Frame Stabilizer for Offshore Heave and Lateral Compensation
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Solution Overview
Problem
Offshore well operations face challenges in stabilizing lift frames due to platform motion and lateral offsets caused by wind, waves, and currents, which can compromise the safety and effectiveness of equipment positioning and operation.
Innovation Solution
A lift frame stabilizer system that includes a stabilizer body with extension arms and engagement mechanisms, capable of moving between retracted and extended positions within vertical stabilization rails, utilizing a drive mechanism to ensure the lift frame remains aligned with the platform center, providing both heave and lateral stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If motion compensating systems are used to account for platform heave, then the lift frame can accommodate vertical platform motion, but the lift frame becomes vulnerable to lateral offsets caused by wind, waves and currents
Solution Approach 1:
The patent combines heave compensation capability with lateral stabilization into a single integrated stabilizer system. The stabilizer includes both vertical motion compensation mechanisms and lateral stabilization components that work together to address both types of platform motion simultaneously, rather than treating them as separate problems.
Solution Approach 2:
The stabilizer system is designed to perform multiple functions: it provides heave compensation through vertical motion accommodation while simultaneously providing lateral stabilization through engagement with vertical rails. This multi-functional design allows a single system to address both vertical and lateral platform motions.
2Stability of the object's composition
If lift frame stabilizers are used to counteract lateral offsets, then the lift frame remains aligned with the platform well center, but the system complexity increases
Solution Approach 1:
The stabilizer system is divided into modular components including stabilizer bodies, extension arms, engagement mechanisms, and drive mechanisms. Each component performs a specific function and can be independently adjusted or maintained, reducing overall system complexity while maintaining lateral stabilization capability.
Solution Approach 2:
The stabilizer system incorporates movable and adjustable components that can dynamically adapt to different operating conditions. Extension arms can extend or retract, and engagement mechanisms can adjust their position along the vertical rails, allowing the system to maintain stability without requiring an overly complex fixed structure.
3Stability of the object's composition
If the stabilizer uses extension arms with engagement mechanisms in vertical rails, then lateral stabilization is achieved, but the device structure becomes more complex
Solution Approach 1:
The vertical rails serve as intermediary structures that mediate between the platform and the stabilizer engagement mechanisms. The rails provide a guided path for the engagement mechanisms to move along, simplifying the lateral stabilization function by using the rails as intermediate structural elements rather than requiring direct complex linkages between multiple stabilizers.
Data Source
AI summary
A well lift frame stabilizer, system, and method for stabilization thereof is disclosed. In an embodiment, the stabilizer includes one or more engagement mechanisms carried by one or more extension arms. The extension arms may be movable between a retracted position, in which the engagement mechanisms are not captured by a pair of vertical stabilization rails, and an extended position, in which the engagement mechanisms are vertically movably captured between the stabilization rails. A drive mechanism may be provided to move the extension arms and to sequentially operate the engagement mechanisms to first, engage side rollers, and then to subsequently engage front and back rollers against the rails.