How Electric Power Systems Run Industrial Fracturing Equipment

This patent describes an electrical power system for fracturing equipment, using separate high-voltage and low-voltage generators and switches to efficiently power a main motor and its auxiliary devices.

What it covers

The patent outlines an electrically-driven fracturing system that uses two distinct power sources. A powerful "main power generation device" supplies high voltage to the main "fracturing motor" through a high-voltage switch group. Separately, a less powerful "first auxiliary power generation device" provides lower voltage to a "fracturing auxiliary device" through a low-voltage switch group. This setup ensures that the heavy-duty motor receives ample power, while other components, like control systems or lighting, are powered appropriately. For example, a large gas turbine might power the main fracturing pump, while a smaller diesel generator or battery system powers the control cabin and fluid handling equipment.

What it doesn't cover

• —Does not cover fracturing systems powered solely by traditional internal combustion engines without electrical drive.
• —Does not cover power systems where a single generator supplies both the main fracturing motor and auxiliary devices without distinct high and low voltage switch groups.
• —Does not cover systems where the auxiliary power generation device has a rated power or voltage equal to or greater than the main power generation device.
• —Does not cover the specific mechanical design of the fracturing pump, wellbore tools, or the chemical composition of fracturing fluids.
• —Does not cover systems where the main power generation device is not connected to the fracturing motor, or the auxiliary device is not connected to the auxiliary power.

The clever bit

The novelty lies in the specialized dual-power architecture: using separate main and auxiliary power generation devices with distinct voltage ratings and switch groups. This allows for optimized, segregated power delivery to the high-demand fracturing motor and its lower-demand auxiliary components, improving efficiency and control.

Why it matters

Electrically-driven fracturing systems are a key development in the energy industry, aiming to reduce emissions, noise, and fuel costs compared to traditional diesel-powered operations. This patent focuses on a specific electrical architecture that enables efficient power delivery for these complex systems. It addresses a critical aspect of transitioning to more sustainable and cost-effective energy extraction methods.

Real-world examples

• 1.Electrically-powered fracking fleets in oil and gas fields
• 2.Hybrid power systems for industrial pumping operations
• 3.E-fracking equipment used by major oilfield service companies
• 4.Modular power generation units for remote industrial sites