Wellbore Laser Casing Cutting for Precise Sidetrack Kick-Off Access
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Solution Overview
Problem
Conventional methods for removing and preparing casings or liners in wellbores for sidetracking operations are inefficient, lacking precision and control, particularly in accessing and removing sections around the kick-off point, which hinders effective sidetracking procedures.
Innovation Solution
A laser tool system is introduced, equipped with optical transmission media, a mono-optic element, and sensors, capable of cutting sections in casings or liners within a hydrocarbon-bearing rock formation by altering the laser beam's geometry or direction, and includes a breaking tool to dislodge cut sections, enhancing control and efficiency in the removal process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional mechanical methods are used to remove casing sections, then the removal process can be performed, but the operation is inefficient and lacks precision particularly around the kick-off point
Solution Approach 1:
The patent replaces conventional mechanical cutting methods with a laser-based optical system. The laser tool uses optical transmission media to deliver laser energy through the casing wall, enabling non-contact cutting that eliminates mechanical wear and improves precision. This substitution directly addresses the contradiction by providing both high efficiency (through rapid laser cutting) and high precision (through controlled optical energy delivery) in removing casing sections around the kick-off point
2Manufacturing precision
If a laser tool is introduced to improve cutting precision, then precision and control are enhanced, but the device complexity increases
Solution Approach 1:
The patent employs nested doll by placing the optical transmission media inside the laser tool housing, which is itself deployed within the wellbore environment. The laser generator, optical transmission media, and cutting head are nested within each other, creating a compact integrated system. This nesting approach reduces the overall footprint and simplifies deployment while maintaining the precision benefits of laser cutting, thereby mitigating the complexity increase
3Manufacturing precision
If optical transmission media are used to deliver the laser beam, then cutting precision is improved, but the device complexity and operational complexity increase
Solution Approach 1:
The patent uses optical transmission media as an intermediary to bridge the laser generator and the cutting point through the casing wall. This intermediary component enables precise delivery of laser energy without direct mechanical contact, allowing for controlled energy transmission through the steel barrier. The optical transmission media acts as a mediator that simplifies the overall system by providing a straightforward path for energy delivery, thereby managing complexity while maintaining precision
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 laser tool system enables precise cutting and removal of casing sections, accelerating the preparation for sidetracking operations, with the ability to cut through steel and cause thermal expansion of the cement layer, allowing for controlled detachment and collection of cut sections, thereby improving the efficiency and control of wellbore preparation.
Implementation Method 1
a laser generator configured to generate a laser beam... for cutting one or more sections in a casing or liner
Implementation Method 2
The laser tool system enables precise cutting and removal of casing sections... capable of cutting through steel
Implementation Method 3
The focusing system may include a mono-optic element... configured to focus or to collimate the laser beam prior to output
Implementation Method 4
one or more optical transmission media... for passing the laser beam
Implementation Method 5
The fluid knife may be configured to sweep the mono-optic element
Implementation Method 6
The purging nozzle may be configured to remove dust and vapor from a path of the laser beam
Implementation Method 7
The vacuum nozzle may be configured to collect dust and vapor from the path
Implementation Method 8
cause thermal expansion of the cement layer, allowing for controlled detachment and collection of cut sections
Data Source
AI summary
An example laser tool is configured to operate within a casing or liner in wellbore of a hydrocarbon-bearing rock formation. The tool is configured to cut sections into the casing or liner material. The cut sections may break off or may be broken off using a breaking tool. The sections may be cut in a region of the casing or liner that includes a kick-off point for sidetracking operations.