Pressure exchange system with motor system

Patent metadata

Field	Value
Publication number	US-2015292310-A1
Application number	US-201514684118-A
Country	US
Kind code	A1
Filing date	Apr 10, 2015
Priority date	Apr 10, 2014
Publication date	Oct 15, 2015
Grant date	—

Abstract

A system including a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid, and a motor system coupled to the hydraulic energy transfer system and configured to power the hydraulic energy transfer system.

First claim

1 . A system, comprising:
a frac system, comprising:
a hydraulic energy transfer system configured to exchange pressures between a first fluid and a second fluid; and
a motor system coupled to the hydraulic energy transfer system and configured to power the hydraulic energy transfer system.

2 . The system of claim 1 , wherein the first fluid is a substantially particulate free fluid and the second fluid is a particulate laden fluid.

3 . The system of claim 1 , wherein the motor system comprises an electric motor, a hydraulic motor, a pneumatic motor, or a combustion motor.

4 . The system of claim 1 , wherein the hydraulic energy transfer system comprises a rotary isobaric pressure exchanger (IPX).

5 . The system of claim 4 , wherein the rotary isobaric pressure exchanger comprises a rotor and a sleeve surrounding the rotor.

6 . The system of claim 5 , wherein the motor system comprises a shaft that couples to the rotor.

7 . The system of claim 5 , wherein the rotor comprises a permanent magnet or an electromagnet.

8 . The system of claim 5 , wherein the sleeve comprises a permanent magnet or an electromagnet.

9 . The system of claim 1 , comprising a controller with one or more modes of operation configured to control the motor system.

10 . The system of claim 9 , wherein the one or more modes of operation comprise at least one of a startup mode, a speed control mode, a continuous power mode, or a periodic power mode.

11 . The system of claim 9 , comprising a sensor configured to detect whether the hydraulic energy transfer system is rotating within a threshold range, wherein the controller couples to the sensor and controls the motor system in response to feedback from the sensor.

12 . A system, comprising:
a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid; and a motor system coupled to the hydraulic energy transfer system and configured to power the hydraulic energy transfer system.

13 . The system of claim 12 , wherein the first fluid is a substantially particulate free fluid and the second fluid is a particulate laden fluid.

14 . The system of claim 12 , wherein the motor system comprises an electric motor, a hydraulic motor, a pneumatic motor, or a combustion motor.

15 . The system of claim 12 , wherein the motor system comprises an electric motor wherein the electric motor comprises first permanent magnets or first electromagnets on a rotor of the rotary IPX configured to interact with second permanent magnets or second electromagnets.

16 . The system of claim 12 , comprising a hydraulic turbine coupled to a rotor of the rotary IPX with a shaft, wherein the hydraulic turbine is configured to rotate the rotor in response to fluid flow past the hydraulic turbine.

17 . The system of claim 12 , comprising a controller with one or more modes of operation configured to control the motor system, wherein the one or more modes of operation comprise at least one of a startup mode, a speed control mode, a continuous power mode, or a periodic power mode.

18 . A method, comprising:
monitoring rotation of a rotor in a rotary isobaric pressure exchanger (IPX); detecting a condition when the rotor is rotating outside of a threshold range; and operating a motor system coupled to the rotary IPX in response to the condition.

19 . The method of claim 18 , wherein monitoring rotation of the rotor comprises monitoring a flow sensor, a pressure sensor, a torque sensor, a rotational speed sensor, an acoustic sensor, a magnetic sensor, or an optical sensor with a controller.

20 . The method of claim 18 , wherein operating the motor system in response to the condition comprises selecting one or more modes of operation, and wherein the one or more modes of operation comprise at least one of a startup mode, a speed control mode, a continuous power mode, or a periodic power mode.

Assignees

• Energy Recovery Inc

Inventors

• Ghasripoor Farshad
• Martin Jeremy Grant
• Theodossiou Alexander Patrick

Classifications

• E21B47/06

  Measuring temperature or pressure · CPC title

• E21B43/26 Primary

  by forming crevices or fractures · CPC title

• E21B43/267

  reinforcing fractures by propping · CPC title

• E21B43/2607

  Surface equipment specially adapted for fracturing operations · CPC title

• F04F13/00 Primary

  Pressure exchangers · CPC title