公开(公告)号：US11525816B2

公开(公告)日：2022-12-13

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： G01R33/24 ,  G01N33/00 ,  E21B49/08 ,  G01R33/60 ,  G01V3/26 ,  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：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：US11181658B2

公开(公告)日：2021-11-23

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：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.

公开(公告)号：US10859549B2

公开(公告)日：2020-12-08

申请号：US15891034

申请日：2018-02-07

申请人： MICROSILICON INC.

发明人： Omar Kulbrandstad ,  Aydin Babakhani ,  Manuel Godoy ,  John Lovell

IPC分类号： G01R33/3415 ,  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：US10690800B2

公开(公告)日：2020-06-23

申请号：US16447193

申请日：2019-06-20

申请人： MICROSILICON, INC.

发明人： Omar Kulbrandstad ,  Manuel Godoy

IPC分类号： G01R33/60 ,  G01V3/32 ,  G01N24/10 ,  E21B49/08

摘要： Certain aspects of the present disclosure provide methods and apparatus for sensing a fluid flowing in a conduit using a mobile electron paramagnetic resonance (EPR) device. The mobile EPR device may include one or more EPR sensors for making EPR measurements and, for certain aspects, may include one or more other sensors for making other measurements. One example mobile EPR device for deploying in a conduit generally includes a housing configured to be conveyed by a fluid flowing in the conduit; a bore in the housing for receiving the fluid; and an EPR sensor disposed adjacent to the bore for EPR sensing of the fluid as the mobile EPR device traverses a section of the conduit.

公开(公告)号：US20180224414A1

公开(公告)日：2018-08-09

申请号：US15891034

申请日：2018-02-07

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 ,  G01V3/32 ,  G01R33/24 ,  G01R33/44 ,  G01R33/36

CPC分类号： G01N33/0031 ,  E21B49/08 ,  E21B2049/085 ,  G01N24/10 ,  G01R33/24 ,  G01R33/3607 ,  G01R33/448 ,  G01R33/60 ,  G01V3/265 ,  G01V3/32

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.