Steering device, method and system
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Solution Overview
Problem
Existing steering technologies for boreholes are inefficient in navigating deviations and require improvements for more precise control over drilling direction.
Innovation Solution
A steering device within the borehole that utilizes a rotatable valve system with an actuator to control fluid flow, creating a Bernoulli suction force for directional control, allowing precise steering by adjusting fluid flow through selectively positioned valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bent subs are used for steering, then steering capability is achieved, but efficiency is insufficient
Solution Approach 1:
The patent applies hydraulics by using fluid flow through a valve to generate a Bernoulli suction force that steers the drill string. The valve controls fluid flow from the drill string to the borehole wall, creating a controlled suction force that efficiently and precisely steers the drill string through deviations, replacing the less efficient bent sub method.
Solution Approach 2:
The patent changes the parameter of fluid flow control by introducing a valve that can be actuated to adjust the amount of fluid flowing through the steering device. By varying the fluid flow rate and pressure parameters, the system achieves precise control over the steering force magnitude, improving both efficiency and precision.
2Measurement precision
If a valve system with actuator is used, then steering precision is improved, but device complexity increases
Solution Approach 1:
The valve system serves multiple functions: it controls fluid flow, generates the Bernoulli suction force for steering, and can be actuated for precise positioning. By combining these functions into a single integrated valve assembly, the patent achieves high steering precision while limiting the increase in overall device complexity.
Solution Approach 2:
The valve acts as an intermediary component between the fluid supply and the steering function. It mediates the fluid flow to create the necessary suction force, providing a controlled interface that simplifies the overall system architecture while enabling precise steering through actuator control.
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
Enables precise and efficient steering of boreholes by maintaining a geostationary Bernoulli suction force, enhancing the ability to navigate deviations and create desired borehole trajectories.
Implementation Method 1
the fluid flow causes a steering force on the steering device, the steering force configured to change a direction of drilling the borehole
Data Source
AI summary
A drilling system configured to drill a borehole into a subsurface formation, including a steering device. The steering device is configured to convey a fluid supply through a valve to an outside surface of the steering device, wherein the fluid flow causes a steering force on the steering device. A method for drilling a borehole into a subsurface formation, including disposing a steering device in the borehole, rotating the steering device, urging a fluid to flow through a valve of the steering device to an outside surface of the steering device, wherein the fluid flow causes a steering force on the steering device.