Adjustable Rotary Steerable System Strike Ring
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Solution Overview
Problem
Conventional rotary steerable drilling systems have limited dogleg capability due to the interaction of pivotable components, making it difficult to adjust the orientation of deviated wellbores effectively during drilling.
Innovation Solution
An adjustable steerable drilling system with removable strike rings that can be interchanged to control the maximum pivot angle between components, allowing for greater flexibility in drilling orientations by varying the steering offset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional rotary steerable drilling systems use fixed pivotable components, then the system structure is simple and reliable, but the dogleg capability is limited and not adjustable in the field
Solution Approach 1:
The strike ring is divided into a body portion and a separate limit portion that can be selectively positioned. The limit portion can be placed in different positions around the body portion to create different maximum pivot angles, allowing the system to be segmented into functional modules that can be independently adjusted.
Solution Approach 2:
The system transitions from a fixed, static pivot angle determination to a dynamic, adjustable configuration. The removable limit portion can be taken off and repositioned to different locations on the strike ring body, enabling the maximum pivot angle to be changed during field operations based on drilling requirements.
2Adaptability or versatility
If the maximum pivot angle is fixed by the strike ring design, then the manufacturing precision is maintained, but the adaptability to different deviated wellbore sections is reduced
Solution Approach 1:
Multiple limit portions are pre-positioned at different locations around the strike ring body during manufacturing, each corresponding to a specific maximum pivot angle. This preliminary arrangement of possible limit positions allows for precise angular control while maintaining the ability to select different configurations in the field.
Solution Approach 2:
The system allows changing the maximum pivot angle parameter by selectively positioning the limit portion at different locations. This parameter change is achieved through a simple mechanical adjustment rather than requiring different strike ring designs, maintaining manufacturing precision while enabling adaptability.
3Adaptability or versatility
If removable strike rings are introduced to adjust pivot angles, then the adaptability to different drilling conditions is improved, but the ease of operation and maintenance is reduced
Solution Approach 1:
The limit portion is extracted as a separate, removable component from the strike ring body. This allows the limit portion to be easily taken off and repositioned to different locations to adjust the maximum pivot angle, or removed entirely to allow free rotation, simplifying the adjustment process while maintaining adaptability.
Solution Approach 2:
The strike ring system transitions from a static, fixed configuration to a dynamic, reconfigurable structure. The removable limit portion enables operators to adjust the pivot angle configuration in the field by simply removing and repositioning the limit portion, making the system adaptable to different drilling conditions without complex procedures.
Data Source
AI summary
A technique facilitates the drilling of deviated wellbores. A steerable drilling system is formed with a pair of components pivotably mounted with respect to each other. A removable strike ring is mounted to one of the steerable drilling system components and is positioned to engage a corresponding strike ring in a manner which limits the maximum pivot angle between the steerable drilling system components. By interchanging the removable strike ring with other removable strike rings, the maximum pivot angle can be adjusted in the field to accommodate drilling of a wider variety of deviated wellbores.