公开(公告)号：US12104587B2

公开(公告)日：2024-10-01

申请号：US17649531

申请日：2022-01-31

Applicant: Caterpillar Inc.

Inventor： Andy Publes ,  Mark C. Paul ,  Mark Francis Grimes ,  Todd Ryan Kabrich ,  Riadh Benguedda

IPC: F04B49/06 ,  E21B43/26 ,  F04B51/00

CPC classification number: F04B49/06 ,  E21B43/2607 ,  F04B51/00

Abstract: In some implementations, a controller may obtain a setting for a target discharge pressure associated with a fluid pump driven by a motor that is controlled by a variable frequency drive (VFD). The target discharge pressure may be for use in a pressure test of a system that includes the fluid pump. The controller may determine a target torque for the motor that achieves the target discharge pressure. The controller may cause, via the VFD and in connection with the pressure test, adjustment to a speed of the motor to achieve the target torque for the motor.

公开(公告)号：US11686186B1

公开(公告)日：2023-06-27

申请号：US17649528

申请日：2022-01-31

Applicant: Caterpillar Inc.

Inventor： Andy Publes ,  Mark Francis Grimes ,  Todd Ryan Kabrich ,  Mark C. Paul ,  Riadh Benguedda

IPC: E21B43/26 ,  E21B41/00 ,  F04B49/06 ,  F04B49/20 ,  F04B17/03

CPC classification number: E21B43/26 ,  E21B41/0085 ,  E21B43/2607 ,  F04B17/03 ,  F04B49/06 ,  F04B49/20

Abstract: In some implementations, a controller may monitor an available power supply of at least one power source for a system for hydraulic fracturing, and a current power demand of the system. The controller may determine, based on monitoring the available power supply and the current power demand, whether a relationship between the current power demand and the available power supply is indicative of an impending power failure. The controller may cause, based on determining that the relationship between the current power demand and the available power supply indicates the impending power failure, reduction of flow rates of one or more fluid pumps of the system to reduce the current power demand.