公开(公告)号：US20230127803A1

公开(公告)日：2023-04-27

申请号：US17929885

申请日：2022-09-06

申请人： MICROSILICON, INC.

发明人： Omar KULBRANDSTAD ,  Aydin BABAKHANI ,  Manuel GODOY ,  John LOVELL

IPC分类号： G01N33/00 ,  E21B49/08 ,  G01R33/60 ,  G01V3/26 ,  G01R33/24 ,  G01R33/44 ,  G01R33/36 ,  G01V3/32 ,  G01N24/10

摘要： Certain aspects of the present disclosure provide methods and apparatus for closed-loop control of a system using one or more electron paramagnetic resonance (EPR) sensors located on-site. With such EPR sensors, a change can be applied to the system, the EPR sensors can measure the effect(s) of the change, and then adjustments can be made in real-time. This feedback process may be repeated continuously to control the system.

公开(公告)号：US20200225378A1

公开(公告)日：2020-07-16

申请号：US16738600

申请日：2020-01-09

申请人： MICROSILICON INC.

发明人： Manuel GODOY ,  Aydin BABAKHANI ,  Omar KULBRANDSTAD ,  John LOVELL

IPC分类号： G01V3/14 ,  E21B49/08 ,  G01N24/10

摘要： Certain aspects of the present disclosure provide methods and apparatus for performing electron paramagnetic resonance (EPR) spectroscopy on a fluid from a flowing well, such as fluid from hydrocarbon recovery operations flowing in a downhole tubular, wellhead, or pipeline. One example method generally includes, for a first EPR iteration, performing a first frequency sweep of discrete electromagnetic frequencies on a cavity containing the fluid; determining first parameter values of reflected signals from the first frequency sweep; selecting a first discrete frequency corresponding to one of the first parameter values that is less than a threshold value; activating a first electromagnetic field in the fluid at the first discrete frequency; and while the first electromagnetic field is activated, performing a first DC magnetic field sweep to generate a first EPR spectrum.

公开(公告)号：US20220187490A1

公开(公告)日：2022-06-16

申请号：US17531855

申请日：2021-11-22

申请人： MICROSILICON INC.

发明人： Manuel GODOY ,  Aydin BABAKHANI ,  Omar KULBRANDSTAD ,  John LOVELL

IPC分类号： G01V3/14 ,  E21B49/08 ,  G01N24/10

摘要： Certain aspects of the present disclosure provide methods and apparatus for performing electron paramagnetic resonance (EPR) spectroscopy on a fluid from a flowing well, such as fluid from hydrocarbon recovery operations flowing in a downhole tubular, wellhead, or pipeline. One example method generally includes, for a first EPR iteration, performing a first frequency sweep of discrete electromagnetic frequencies on a cavity containing the fluid; determining first parameter values of reflected signals from the first frequency sweep; selecting a first discrete frequency corresponding to one of the first parameter values that is less than a threshold value; activating a first electromagnetic field in the fluid at the first discrete frequency; and while the first electromagnetic field is activated, performing a first DC magnetic field sweep to generate a first EPR spectrum.

公开(公告)号：US20210072209A1

公开(公告)日：2021-03-11

申请号：US16952826

申请日：2020-11-19

申请人： MICROSILICON INC.

发明人： Omar KULBRANDSTAD ,  Aydin BABAKHANI ,  Manuel GODOY ,  John LOVELL

IPC分类号： G01N33/00 ,  E21B49/08 ,  G01R33/60 ,  G01V3/26 ,  G01R33/24 ,  G01R33/44 ,  G01R33/36 ,  G01V3/32 ,  G01N24/10

摘要： Certain aspects of the present disclosure provide methods and apparatus for closed-loop control of a system using one or more electron paramagnetic resonance (EPR) sensors located on-site. With such EPR sensors, a change can be applied to the system, the EPR sensors can measure the effect(s) of the change, and then adjustments can be made in real-time. This feedback process may be repeated continuously to control the system.