Expandable Underreamer Wings for Modular Wellbore Enlargement
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Solution Overview
Problem
Existing underreamers require complex manufacturing processes, leading to increased costs and a higher risk of failure during operation, making them inefficient for expanding wellbore diameters.
Innovation Solution
A drilling apparatus with expandable wings that can switch between collapsed and expanded positions, facilitated by hydraulic or pneumatic pressure, allowing for modular replacement and interchangeability of wing sets to reduce complexity and maintenance downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex manufacturing processes are used to increase underreamer diameter, then the underreamer can achieve larger diameter expansion, but manufacturing time and cost increase
Solution Approach 1:
The underreamer is divided into a body and multiple interchangeable wing assemblies that can be attached and removed independently. This segmentation allows the wings to be manufactured separately and swapped on-site, reducing overall manufacturing time while maintaining diameter expansion capability.
Solution Approach 2:
The wing assemblies are designed to be interchangeable and replaceable, transforming the static structure into a dynamic system where components can be changed based on operational needs. This allows different diameter configurations to be achieved by swapping wing sets rather than manufacturing entirely different underreamers.
2Adaptability or versatility
If complex manufacturing processes are used to increase underreamer diameter, then the underreamer can achieve larger diameter expansion, but manufacturing cost increases
Solution Approach 1:
By segmenting the underreamer into a reusable body and interchangeable wings, the complex manufacturing is concentrated in producing multiple wing sets rather than multiple complete underreamers. This reduces overall manufacturing cost while maintaining diameter expansion capability.
Solution Approach 2:
The body is designed as a universal component that can work with different wing assemblies to achieve various diameter expansions. This multi-functionality reduces the need to manufacture entirely different underreamers for different applications, lowering overall manufacturing costs.
3Adaptability or versatility
If complex designs are used to increase underreamer diameter, then the underreamer can achieve larger diameter expansion, but the apparatus becomes more likely to fail during operation
Solution Approach 1:
Segmenting the underreamer into modular components allows for easier inspection, maintenance, and replacement of individual parts. This improves operational reliability by enabling quick repairs and reducing the likelihood that a single point of failure will compromise the entire apparatus.
Solution Approach 2:
The design allows changing the configuration parameters by swapping wing assemblies with different dimensions. This provides diameter expansion capability through parameter changes rather than complex internal mechanisms, improving reliability by using simpler, more robust components.
4Ease of manufacture
If the underreamer uses fixed diameter design, then manufacturing is simpler, but the apparatus cannot adapt to different wellbore size requirements
Solution Approach 1:
The interchangeable wing assemblies are simple, segmented components that can be manufactured using straightforward processes. These modular wings provide adaptability by allowing different size configurations to be assembled from the same basic component set, maintaining manufacturing simplicity while enabling diameter adjustment.
Solution Approach 2:
The system transforms from a static fixed-diameter design to a dynamic configurable system where wing assemblies can be swapped to change the operational diameter. This maintains manufacturing simplicity by using repeated standard components rather than custom-manufactured pieces for each diameter.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus reduces manufacturing time and costs while minimizing operational failures, enabling efficient expansion of wellbore diameters with interchangeable wings for on-site repairs and adjustments.
Implementation Method 1
assisted in maintaining the second expanded position via hydraulic or pneumatic pressure within the existing wellbore
Implementation Method 2
assisted in maintaining the second expanded position via hydraulic or pneumatic pressure within the existing wellbore
Implementation Method 3
Each wing is able to expand via rotation about an axis through the connector
Data Source
AI summary
A drilling apparatus such as an expandable drill bit or an inline underreamer includes a main body in communication with a drill string, and a plurality of wing assemblies with a plurality of wings that are actuatable between a collapsed position and an expanded position. The drilling apparatus has a first diameter defined by a plurality of blades of the main body when the plurality of wings is in the collapsed position, and a second, greater diameter defined by the plurality of wings when the plurality of wings is in the expanded position. The drilling apparatus is insertable into an existing wellbore that has a first interior diameter when the plurality of wings is in the collapsed position, and is able to increase the existing wellbore to a second, greater diameter when the plurality of wings is in the expanded position.