Lateral Liner Biasing for Accurate Multilateral Wellbore Placement
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Solution Overview
Problem
Current multilateral wellbore drilling technologies are inefficient and costly, making it difficult to accurately drill and complete lateral wellbores from a main wellbore.
Innovation Solution
A system and method for orienting the placement of lateral wellbores using a whipstock with an anchor and orientation indicators, and a biasing member to secure the lateral liner, allowing precise directional drilling and secure placement of the liner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional multilateral wellbore drilling technologies are used, then lateral wellbores can be drilled from a main wellbore, but the process is inefficient and costly with poor ultimate recoveries
Solution Approach 1:
The patent applies preliminary action by pre-forming windows in the main wellbore casing at specific locations and orientations before lateral drilling. Orientation indicators are installed in these windows to guide subsequent lateral wellbore placement. This preliminary preparation enables more efficient and cost-effective multilateral drilling by eliminating the need for complex real-time orientation adjustments during lateral drilling operations.
2Length of moving object
If long wellbores are drilled to access far out into a formation, then the reach is increased, but the ultimate recoveries per thousand feet of lateral decrease
Solution Approach 1:
The patent applies segmentation by dividing a single long wellbore into multiple shorter lateral wellbores that extend from a main wellbore at different locations. Instead of drilling one continuous long lateral, the system creates multiple laterals (e.g., first, second, third laterals) at different orientations and locations. This segmentation increases the total productive surface area and improves ultimate recoveries per thousand feet of lateral by accessing different formation zones through multiple entry points.
3Productivity
If multilateral wellbores are drilled to improve production, then more formation access is achieved, but the drilling and completion complexity increases
Solution Approach 1:
The patent applies self-service through orientation indicators that are installed in pre-formed windows during main wellbore construction. These indicators automatically provide orientation information for subsequent lateral drilling operations, eliminating the need for complex real-time orientation measurement and adjustment systems. The pre-installed indicators enable drillers to accurately place lateral wellbores without requiring sophisticated guidance equipment or complex procedural interventions, thereby reducing overall system complexity.
Data Source
AI summary
Technologies for facilitating the placement of lateral liners from a main casing including a device for positioning a lateral liner in a lateral wellbore accessed through a window having a V-shaped downhole end, the liner junction placement device comprising: a lateral liner biasing member configured to be positioned between the lateral liner and the lateral wellbore at the window and configured to urge the lateral liner away from one side of the lateral wellbore.