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公开(公告)号：US20200256834A1
公开(公告)日：2020-08-13
申请号：US16755211
申请日：2018-10-10
Applicant: BP Exploration Operating Company Limited
Inventor： Tommy LANGNES , Pradyumna THIRUVENKATANATHAN
Abstract: A system for processing acoustic data to identify an event includes a receiver unit including a processor and a memory. The receiver unit is configured to receive a signal from a sensor disposed along a sensor path or across a sensor area. A processing application is stored in the memory. The processing application, when executed on the processor, configures the processor to: receive the signal from the sensor, where the signal includes an indication of an acoustic signal received at one or more lengths along the sensor path or across a portion of the sensor area and the signal is indicative of the acoustic signal across a frequency spectrum; determine a plurality of frequency domain features of the signal across the frequency spectrum; and generate an output comprising the plurality of frequency domain features.
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公开(公告)号：US20190120044A1
公开(公告)日：2019-04-25
申请号：US16091929
申请日：2017-04-06
Applicant: BP Exploration Operating Company Limited
Inventor： Tommy LANGNES , Pradyumna THIRUVENKATANATHAN
Abstract: A method of detecting an event within a wellbore includes obtaining a sample data set, determining a plurality of frequency domain features of the sample data set, comparing the plurality of frequency domain features with an event signature, determining that the plurality of frequency domain features matches the thresholds, ranges, or both of the event signature, and determining the presence of the event within the wellbore based on determining that the plurality of frequency domain features match the thresholds, ranges, or both of the event signature. The sample data set is a sample of an acoustic signal originating within a wellbore including a fluid. The sample data set is representative of the acoustic signal across a frequency spectrum. The event signature includes a plurality of thresholds, ranges, or both corresponding to the plurality of frequency domain features.
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公开(公告)号：US20200291772A1
公开(公告)日：2020-09-17
申请号：US16817559
申请日：2020-03-12
Applicant: BP Exploration Operating Company Limited
Inventor： Pradyumna THIRUVENKATANATHAN , Tommy LANGNES
Abstract: A monitoring system, comprising a flow line comprising at least one bend, an optical fiber coupled to an exterior of the flow line, wherein the optical fiber is wrapped around at least a portion of the flow line, and a receiver coupled to an end of the optical fiber, wherein the receiver is configured to detect at least one acoustic signal from the optical fiber.
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Patent Agency Ranking
公开(公告)号：US20220251943A1
公开(公告)日：2022-08-11
申请号：US17618433
申请日：2019-06-25
Applicant: BP Exploration Operating Company Limited
Inventor： Pradyumna THIRUVENKATANATHAN , Tommy LANGNES
IPC: E21B47/107
Abstract: A method of abandoning a wellbore can include obtaining a first sample data set within a wellbore, wherein the first sample data set is a sample of an acoustic signal originating within the wellbore; determining a plurality of frequency domain features of the first sample data set; identifying a fluid flow location within the wellbore using the first plurality of frequency domain features; setting a barrier at or above the fluid flow location; obtaining a second sample data set above the barrier, wherein the second sample data set is a sample of an acoustic signal originating within the wellbore above the barrier; determining a second plurality of frequency domain features of the second sample data set; and identifying that a fluid flow rate or flow mechanism at the fluid flow location has been reduced or eliminated and/or identifying another fluid flow location using the second plurality of frequency domain features.
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公开(公告)号：US20200182047A1
公开(公告)日：2020-06-11
申请号：US16091519
申请日：2017-04-06
Applicant: BP Exploration Operating Company Limited
Inventor： Tommy LANGNES , Pradyumna THIRUVENKATANATHAN
Abstract: A method of detecting sand inflow into a wellbore is disclosed. The method can include obtaining a sample data set, detecting a broadband signal within the sample data set, comparing the broadband signal with a signal reference, determining that the broadband signal meets or exceeds the signal reference, and determining the presence of sand inflow into the wellbore based on determining that the broadband signal meets or exceeds the signal reference. The sample data set can be a sample of an acoustic signal originating within a wellbore comprising a fluid, and the broadband signal at least includes a portion of the sample data set at frequencies above 0.5 kHz.
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公开(公告)号：US20200048999A1
公开(公告)日：2020-02-13
申请号：US16566711
申请日：2019-09-10
Applicant: BP Exploration Operating Company Limited
Inventor： Tommy LANGNES , Pradyumna THIRUVENKATANATHAN
Abstract: A method of detecting a leak event within a wellbore can include inducing a pressure differential within a wellbore comprising a fluid, obtaining a sample data set representative of the acoustic signal across a frequency spectrum while inducing the pressure differential, determining a plurality of frequency domain features of the sample data set, determining a presence of a leak event at one or more depths within the wellbore based on determining that the plurality of frequency domain features match a leak event signature, correlating the leak event with the induced pressure differential, and determining a presence and location of a leak within the wellbore based on the presence of the leak event and the correlating of the leak event with the induced pressure differential.
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公开(公告)号：US20200032639A1
公开(公告)日：2020-01-30
申请号：US16563544
申请日：2019-09-06
Applicant: BP Exploration Operating Company Limited
Inventor： Tommy LANGNES , Pradyumna THIRUVENKATANATHAN
Abstract: A method of detecting sand inflow into a wellbore is disclosed. The method can include obtaining a sample data set, detecting a broadband signal within the sample data set, comparing the broadband signal with a signal reference, determining that the broadband signal meets or exceeds the signal reference, and determining the presence of sand inflow into the wellbore based on determining that the broadband signal meets or exceeds the signal reference. The sample data set can be a sample of an acoustic signal originating within a wellbore comprising a fluid, and the broadband signal at least includes a portion of the sample data set at frequencies above 0.5 kHz.
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公开(公告)号：US20190390546A1
公开(公告)日：2019-12-26
申请号：US16563689
申请日：2019-09-06
Applicant: BP Exploration Operating Company Limited
Inventor： Tommy LANGNES , Pradyumna THIRUVENKATANATHAN
Abstract: A method of detecting an event within a wellbore includes obtaining a sample data set, determining a plurality of frequency domain features of the sample data set, comparing the plurality of frequency domain features with an event signature, determining that the plurality of frequency domain features matches the thresholds, ranges, or both of the event signature, and determining the presence of the event within the wellbore based on determining that the plurality of frequency domain features match the thresholds, ranges, or both of the event signature. The sample data set is a sample of an acoustic signal originating within a wellbore including a fluid. The sample data set is representative of the acoustic signal across a frequency spectrum. The event signature includes a plurality of thresholds, ranges, or both corresponding to the plurality of frequency domain features.
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