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公开(公告)号：US20220381139A1
公开(公告)日：2022-12-01
申请号：US17767063
申请日：2020-01-24
Applicant: LYTT LIMITED
Inventor： Cagri CERRAHOGLU , James Crofton RAMSAY , Pradyumna THIRUVENKATANATHAN
IPC: E21B47/107 , E21B47/07 , E21B47/113
Abstract: A method of determining the presence and/or extent of an event comprises determining a plurality of temperature features from a temperature sensing signal, determining one or more frequency domain features from an acoustic signal, and using at least one temperature feature of the plurality of temperature features and at least one frequency domain feature of the one or more frequency domain features to determine the presence and/or extent of the event at one or more locations.
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公开(公告)号：US20210115786A1
公开(公告)日：2021-04-22
申请号：US17071021
申请日：2020-10-15
Applicant: Lytt Limited
Inventor： Cagri CERRAHOGLU , James Crofton RAMSAY , Pradyumna THIRUVENKATANATHAN
IPC: E21B47/135 , E21B47/07
Abstract: A method of determining fluid inflow rates within a wellbore comprises determining a plurality of temperature features from a distributed temperature sensing signal originating in a wellbore, determining one or more frequency domain features from an acoustic signal originating the wellbore, and using at least one temperature feature of the plurality of temperature features and at least one frequency domain feature of the one or more frequency domain features to determine a fluid inflow rate at one or more locations along the wellbore.
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公开(公告)号：US20220389810A1
公开(公告)日：2022-12-08
申请号：US17821102
申请日：2022-08-19
Applicant: Lytt Limited
Inventor： Cagri CERRAHOGLU , Pradyumna THIRUVENKATANATHAN
IPC: E21B47/107 , E21B47/07 , G01H9/00 , G01K11/32
Abstract: A method of monitoring fluid outflow along a wellbore includes obtaining an acoustic signal from a sensor within the wellbore. The acoustic signal includes acoustic samples across a portion of a depth of the wellbore. In addition, the method includes determining one or more frequency domain features from the acoustic signal. Further, the method includes identifying one or more fluid outflow locations along the portion of the depth of the wellbore using the one or more frequency domain features.
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公开(公告)号：US20220381143A1
公开(公告)日：2022-12-01
申请号：US17767133
申请日：2019-12-16
Applicant: LYTT LIMITED
IPC: E21B47/135 , E21B47/07 , E21B47/103 , E21B47/113 , G01H9/00 , G01K11/32 , E21B47/08 , E21B47/14
Abstract: A method of detecting one or more events comprises determining a plurality of temperature features from a temperature sensing signal, using the plurality of temperature features in an event detection model, and determining the presence or absence of the one or more events at one or more locations based on an output from the event detection model.
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公开(公告)号：US20210115785A1
公开(公告)日：2021-04-22
申请号：US17071031
申请日：2020-10-15
Applicant: Lytt Limited
Inventor： Cagri CERRAHOGLU , James Crofton RAMSAY , Pradyumna THIRUVENKATANATHAN
IPC: E21B47/103 , E21B47/135
Abstract: A method of determining fluid inflow locations comprises determining a plurality of temperature features from a distributed temperature sensing signal originating in a wellbore, using the plurality of temperature features in a fluid inflow identification model, and determining the presence of fluid inflow at one or more locations along the wellbore based on an output from the fluid inflow identification model.
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公开(公告)号：US20230206119A1
公开(公告)日：2023-06-29
申请号：US17925575
申请日：2020-06-18
Applicant: LYTT LIMITED
Inventor： Cagri CERRAHOGLU , Pradyumna THIRUVENKATANATHAN
IPC: G06N20/00
CPC classification number: G06N20/00
Abstract: A method of identifying events comprises obtaining a first set of measurements comprising a first signal of field data at a location; identifying one or more events at the location using the first set of measurements; obtaining a second set of measurements comprising a second signal at the location, wherein the first signal and the second signal represent at least one different physical measurements; training one or more event models using the second set of measurements and the identification of the one or more events as inputs; and using the one or more event models to identify at least one additional event at one or more locations.
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公开(公告)号：US20230169369A1
公开(公告)日：2023-06-01
申请号：US18159658
申请日：2023-01-25
Applicant: Lytt Limited
Inventor： Cagri CERRAHOGLU , Pradyumna THIRUVENKATANATHAN
CPC classification number: G06N5/04 , E21B47/00 , G06N20/00 , E21B2200/20
Abstract: A method of identifying events within a wellbore comprises obtaining a first set of measurements of a first signal within a wellbore, identifying one or more events within the wellbore using the first set of measurements, obtaining a second set of measurements of a second signal within the wellbore, wherein the first signal and the second signal represent different physical measurements, training one or more event models using the second set of measurements and the identification of the one or more events as inputs, and using the one or more event models to identify at least one additional event within the wellbore.
