Quick Access Casing Coupling for Multilateral Well Lateral Drilling
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Solution Overview
Problem
Multilateral wells pose challenges in accessing and drilling laterals efficiently due to limitations in existing lateral finding tools, which are often impractical and ineffective.
Innovation Solution
The system employs a quick access casing coupling, a drill string with a whipstock and lateral entry locator, and a logging tool to detect and orient the whip face for precise drilling of laterals by kicking off the drill bit from the whip face into the tubular body's circumferential wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing lateral finding tools are used to access and drill laterals in multilateral wells, then the drilling operation can proceed, but the tools are impractical and ineffective, leading to inefficiency and difficulty in accessing laterals
Solution Approach 1:
The system divides the lateral access operation into distinct functional components: a logging tool for detection, a whipstock for orientation, and a drill string for drilling. This segmentation allows each component to be optimized for its specific function, making the overall system more practical and effective than previous integrated tools
Solution Approach 2:
The logging tool is used beforehand to detect the precise location and orientation of the lateral entry point before drilling begins. This preliminary detection action allows the whipstock to be positioned correctly in advance, ensuring accurate lateral access without requiring complex real-time navigation tools
2Productivity
If re-entry operations are performed multiple times to drill shallower laterals from the original wellbore, then production from multiple formations can be achieved, but the process becomes time-consuming and less efficient
Solution Approach 1:
The system provides a universal method for accessing multiple laterals from a single wellbore by detecting and orienting to different lateral entry points sequentially. This multi-functional approach allows the same drilling apparatus to efficiently access shallower and deeper laterals without requiring separate re-entry operations for each formation
Solution Approach 2:
The system replaces complex mechanical re-entry operations with a detection-and-orientation approach using the logging tool and whipstock. By substituting physical trial-and-error re-entry methods with precise logging detection and whipstock orientation, the system significantly reduces the time required to access multiple laterals
3Adaptability or versatility
If the whipstock is permanently connected to the drill string, then the system structure is simpler, but the whipstock cannot be repositioned or removed for different lateral drilling operations
Solution Approach 1:
The whipstock connection is designed to be dynamic rather than fixed, allowing the whipstock to be positioned, secured, and removed as needed for different lateral drilling operations. This dynamic connection provides the adaptability to access multiple laterals while maintaining operational simplicity through standardized connection and release mechanisms
Data Source
AI summary
A system includes a quick access casing coupling, a drill string, a whipstock, a lateral entry locator, a logging tool, and a drill bit. The quick access casing coupling has an inner profile and is installed on a tubular body. The whipstock has a whip face and is removably connected to the drill string. The lateral entry locator is connected to the whipstock and includes an outer surface designed to engage with the inner profile of the quick access casing coupling. Engagement of the outer surface and the inner profile orients the whip face towards a planned location of a lateral. The drill bit is connected to the drill string and is configured to kick off from the whip face into a portion of the circumferential wall adjacent to the planned location to drill the lateral.