Decreasing microorganisms in fluids using ultrasonic wave technologies

Patent metadata

Field	Value
Publication number	US-10660978-B2
Application number	US-201615170238-A
Country	US
Kind code	B2
Filing date	Jun 1, 2016
Priority date	Jun 2, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

Microbial growth of at least one microorganism may be decreased, prevented, and/or inhibited in a fluid by providing ultrasonic waves to the fluid. In an optional non-limiting embodiment, an amount of at least one gas may be provided to the fluid for further decreasing the microbial population, preventing microbial growth, and/or inhibiting microbial growth. In another non-limiting embodiment, the fluid may be a downhole fluid, such as but not limited to, drilling fluids, completion fluids, production fluids, injection fluids, stimulation fluids, refinery fluids, servicing fluids, and combinations thereof. Alternatively, the fluid or downhole fluid may have a temperature ranging from about 25 C to about 100 C.

First claim

What is claimed is:

1. A method for decreasing microbial growth in a downhole fluid, wherein the method comprises:
providing ultrasonic waves by a sonication device to the downhole fluid in a subterranean reservoir wellbore,
agitating microorganism particles comprising at least one microorganism selected from the group consisting of a bacteria, a yeast, a virus, an algae, and combinations thereof. thereby
decreasing microbial growth of the at least one microorganism in the downhole fluid by sonoporation,
wherein the ultrasonic waves are provided at a frequency ranging from about 40 kHz to about 100 kHz.

2. The method of claim 1 , wherein the at least one microorganism is selected from the group consisting of gram positive bacteria, gram negative bacteria, sulfate reducing bacteria, acid producing bacteria, nitrate reducing bacteria, and combinations thereof.

3. The method of claim 1 , wherein the downhole fluid comprises a temperature ranging from about 25 C to about 100 C.

4. The method of claim 1 , further comprising providing the downhole fluid with an effective amount of at least one gas at the same time or different time as providing the ultrasonic waves to the downhole fluid to further decrease microbial growth of the at least one microorganism in the fluid.

5. The method of claim 4 , wherein the at least one gas is selected from the group consisting of an inert gas, a noble gas, and combinations thereof.

6. The method of claim 4 , wherein the effective amount of the at least one gas ranges from about 0.1 mg/L to about 100 mg/L.

7. The method of claim 1 , wherein the downhole fluid is an oil-based fluid, a water-based fluid, and combinations thereof.

8. The method of claim 1 , wherein the downhole fluid is selected from the group consisting of drilling fluids, completion fluids, production fluids, injection fluids, stimulation fluids, refinery fluids, servicing fluids, and combinations thereof.

9. The method of claim 1 , wherein the decreasing microbial growth comprises sterilizing the microbial growth of the at least one microorganism in the downhole fluid.

10. A method for decreasing microbial growth in a fluid, wherein the method comprises:
providing ultrasonic waves by a sonication device to the fluid in a subterranean reservoir wellbore, wherein the ultrasonic waves are provided at a frequency ranging from about 40 kHz to about 100 kHz;
agitating microorganism particles comprising at least one microorganism selected from the group consisting of a bacteria, a yeast, a virus, an algae, and combinations thereof;
providing an effective amount of a gas to the fluid to thereby decrease an amount of at least one microorganism in the fluid; and
decreasing microbial growth of an amount of at least one microorganism in the fluid by sonoporation.

11. The method of claim 10 , wherein the fluid comprises a temperature ranging from about 25 C to about 100 C.

12. The method of claim 10 , further comprising providing the fluid with an effective amount of at least one gas at the same time or different time as providing the ultrasonic waves to the fluid to further decrease microbial growth of the at least one microorganism in the fluid.

13. The method of claim 12 , wherein the at least one gas is selected from the group consisting of an inert gas, a noble gas, and combinations thereof.

14. The method of claim 10 , wherein the decreasing microbial growth comprises sterilizing the microbial growth of the at least one microorganism in the downhole fluid.

15. A method for decreasing microorganisms in a downhole fluid, wherein the method comprises:
sonicating ultrasonic waves into the downhole fluid in a subterranean reservoir wellbore with a sonication device; wherein the ultrasonic waves are provided at a frequency ranging from about 40 kHz to about 100 kHz; wherein the downhole fluid comprises a temperature ranging from about 25 C to about 100 C;
agitating microorganism particles comprising at least one microorganism selected from the group consisting of a bacteria, a yeast, a virus, an algae, and combinations thereof thereby
decreasing microbial growth of an amount of at least one microorganism in the downhole fluid by sonoporation; and
wherein the downhole fluid is selected from the group consisting of drilling fluids, completion fluids, production fluids, injection fluids, stimulation fluids, refinery fluids, servicing fluids, and combinations thereof.

Assignees

• Baker Hughes Inc
• Baker Hughes A Ge Co Llc

Inventors

• Armstrong Charles David
• Lee Crystal

Classifications

• C02F2303/20

  Prevention of biofouling · CPC title

• A61L2/025 Primary

  Ultrasonic waves · CPC title

• C02F1/36 Primary

  ultrasonic vibrations · CPC title

• C02F2303/04

  Disinfection · CPC title