Wellbore detector with azimuthal and spectral energy resolution

Kasten, Ansas Matthias; Ivan, Adrian; Ross, William Robert

Title: Wellbore detector with azimuthal and spectral energy resolution

Abstract

A wellbore inspection device includes a radiation generation source operable to emit neutrons, and a radiation detector fixed relative to the radiation generation source and operable to detect backscattered neutron radiation from a surrounding environment. The radiation detector includes a plurality of individually addressable detector elements arranged in one or more concentric rings. Respective amounts of backscattered neutron radiation detected by the individually addressable detector elements within a ring is indicative of the azimuthal direction of the detected backscattered neutron radiation, and the respective amount of backscattered neutron radiation detected by the individually addressable detector elements of two or more concentric rings is indicative of an energy level of the backscattered neutron radiation. The inspection device determines whether a potential anomaly is present in or around the wellbore, based at least in part on the respective amounts of backscattered radiation detected by the individually addressable detector elements.

Inventors:: Kasten, Ansas Matthias; Ivan, Adrian; Ross, William Robert

Issue Date:: 2020-08-04

Research Org.:: GE Energy Oilfield Technology, Inc., Broussard, LA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1735107

Patent Number(s):: 10732317

Application Number:: 16/102,221

Assignee:: GE Energy Oilfield Technology, Inc. (Broussard, LA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

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G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V5/145 - {using a neutron source combined with a gamma- or X-ray source}

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
G06F17/15 - Correlation function computation {including computation of convolution operations

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V8/16 - using optical fibres

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
E21B47/16 - through the drill string or casing {, e.g. by torsional acoustic waves}

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V5/10 - using neutron sources {
G01V3/30 - operating with electromagnetic waves
G01V11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
G01V5/107 - {and detecting reflected or back-scattered neutrons}
G01V1/44 - using generators and receivers in the same well

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DOE Contract Number:: FE0024293

Resource Type:: Patent

Resource Relation:: Patent File Date: 08/13/2018

Country of Publication:: United States

Language:: English

Citation Formats


                    Kasten, Ansas Matthias, Ivan, Adrian, and Ross, William Robert. Wellbore detector with azimuthal and spectral energy resolution.  United States: N. p., 2020. 
        Web.

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                    Kasten, Ansas Matthias, Ivan, Adrian, & Ross, William Robert. Wellbore detector with azimuthal and spectral energy resolution.  United States.

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                    Kasten, Ansas Matthias, Ivan, Adrian, and Ross, William Robert. Tue .  
        "Wellbore detector with azimuthal and spectral energy resolution".  United States.  https://www.osti.gov/servlets/purl/1735107.

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@article{osti_1735107,

  title        = {Wellbore detector with azimuthal and spectral energy resolution},

  author       = {Kasten, Ansas Matthias and Ivan, Adrian and Ross, William Robert},

  abstractNote = {A wellbore inspection device includes a radiation generation source operable to emit neutrons, and a radiation detector fixed relative to the radiation generation source and operable to detect backscattered neutron radiation from a surrounding environment. The radiation detector includes a plurality of individually addressable detector elements arranged in one or more concentric rings. Respective amounts of backscattered neutron radiation detected by the individually addressable detector elements within a ring is indicative of the azimuthal direction of the detected backscattered neutron radiation, and the respective amount of backscattered neutron radiation detected by the individually addressable detector elements of two or more concentric rings is indicative of an energy level of the backscattered neutron radiation. The inspection device determines whether a potential anomaly is present in or around the wellbore, based at least in part on the respective amounts of backscattered radiation detected by the individually addressable detector elements.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {8}

}

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Works referenced in this record:

Backscattered-electron detection systems and associated methods
patent, June 2002

Hirayanagi, Noriyuki
US Patent Document 6,399,945
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6399945

Neutron backscatter gravel pack logging sonde with azimuthal scan capability
patent, January 1996

Gold, Randy
US Patent Document 5,481,105
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5481105

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Title: Wellbore detector with azimuthal and spectral energy resolution

Abstract

Citation Formats

Backscattered-electron detection systems and associated methods patent, June 2002

Neutron backscatter gravel pack logging sonde with azimuthal scan capability patent, January 1996

Backscattered-electron detection systems and associated methods
patent, June 2002

Neutron backscatter gravel pack logging sonde with azimuthal scan capability
patent, January 1996