公开(公告)号：US11530606B2

公开(公告)日：2022-12-20

申请号：US16091519

申请日：2017-04-06

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: G01H3/04 ,  E21B47/107 ,  E21B49/00 ,  G01V1/22 ,  G01V1/50 ,  E21B43/26 ,  G01V1/00 ,  E21B47/135 ,  G01H9/00 ,  E21B33/13 ,  E21B34/06 ,  E21B43/14

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 including a fluid, and the broadband signal at least includes a portion of the sample data set at frequencies above 0.5 kHz.

公开(公告)号：US11199084B2

公开(公告)日：2021-12-14

申请号：US16091929

申请日：2017-04-06

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: E21B49/00 ,  G01V1/50 ,  E21B43/26 ,  G01V1/00 ,  E21B47/107 ,  G01V1/22 ,  E21B47/135 ,  G01H3/04 ,  G01H9/00 ,  E21B33/13 ,  E21B34/06 ,  E21B43/14

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.

公开(公告)号：US10975687B2

公开(公告)日：2021-04-13

申请号：US16566711

申请日：2019-09-10

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: E21B47/107 ,  E21B47/117 ,  G01N29/11 ,  G01N29/44 ,  G01V1/00

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.

公开(公告)号：US11859488B2

公开(公告)日：2024-01-02

申请号：US16698335

申请日：2019-11-27

Applicant: BP Exploration Operating Company Limited

Inventor： Pradyumna Thiruvenkatanathan

IPC: E21B47/107 ,  E21B47/14 ,  G01V1/50 ,  G06F30/20 ,  G01V1/28 ,  G01V1/30 ,  G06F30/28 ,  G01V1/00 ,  G01V99/00 ,  G06N7/01

CPC classification number: E21B47/107 ,  E21B47/14 ,  G01V1/001 ,  G01V1/282 ,  G01V1/288 ,  G01V1/307 ,  G01V1/50 ,  G01V99/005 ,  G06F30/20 ,  G06F30/28 ,  G06N7/01 ,  E21B2200/20 ,  E21B2200/22 ,  G01V2210/21 ,  G01V2210/324

Abstract: A method of identifying inflow locations along a wellbore includes obtaining an acoustic signal from a sensor within the wellbore, determining a plurality of frequency domain features from the acoustic signal, and identifying, using a plurality of fluid flow models, a presence of at least one of a gas phase inflow, an aqueous phase inflow, or a hydrocarbon liquid phase inflow at one or more fluid flow locations. The acoustic signal includes acoustic samples across a portion of a depth of the wellbore, and the plurality of frequency domain features are obtained across a plurality of depth intervals within the portion of the depth of the wellbore. Each fluid flow model of the plurality of fluid inflow models uses one or more frequency domain features of the plurality of the frequency domain features, and at least two of the plurality of fluid flow models are different.

公开(公告)号：US11215049B2

公开(公告)日：2022-01-04

申请号：US16563689

申请日：2019-09-06

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: E21B47/107 ,  E21B49/00 ,  G01V1/22 ,  G01V1/50 ,  E21B43/26 ,  G01V1/00 ,  E21B47/135 ,  G01H3/04 ,  G01H9/00 ,  E21B33/13 ,  E21B34/06 ,  E21B43/14

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.

公开(公告)号：US11199085B2

公开(公告)日：2021-12-14

申请号：US16639774

申请日：2018-08-23

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: E21B47/107 ,  E21B43/12 ,  E21B47/135 ,  G01H3/04 ,  G01H9/00

Abstract: A method of detecting sand ingress within a wellbore includes obtaining a sample data set, determining a plurality of frequency domain features of the sample data set over a plurality of depth ranges, determining a presence of sand ingress at a first depth range of the plurality of depth ranges within the wellbore based on determining that the plurality of frequency domain features over the first depth range match a sand ingress signature, and determining a presence of sand migration along a second depth range of the plurality of depths within the wellbore based on determining that the plurality of frequency domain features over the second depth range match a sand migration 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.

公开(公告)号：US11643923B2

公开(公告)日：2023-05-09

申请号：US16710237

申请日：2019-12-11

Applicant: BP Exploration Operating Company Limited

Inventor： Pradyumna Thiruvenkatanathan

IPC: E21B47/107 ,  G01V1/28 ,  G01V1/22 ,  G01V13/00

CPC classification number: E21B47/107 ,  G01V1/226 ,  G01V1/288 ,  G01V13/00 ,  G01V2210/43 ,  G01V2210/6161

Abstract: A method of detecting an event by: obtaining a first sample data set; determining a frequency domain feature(s) of the first sample data set over a first time period; determining a first threshold for the a frequency domain feature(s) using the first sample data set; determining that the frequency domain feature(s) matches the first threshold; determining the presence of an event during the first time period based on determining that the frequency domain feature(s) matches the first threshold; obtaining a second sample data set; determining a frequency domain feature(s) of the second sample data set over a second time period; determining a second threshold for the frequency domain feature(s) using the second sample data set; determining that the frequency domain feature(s) matches the second threshold; and determining the presence of the event during the second time period based on determining that the frequency domain feature(s) matches the second threshold.

公开(公告)号：US11333636B2

公开(公告)日：2022-05-17

申请号：US16755211

申请日：2018-10-10

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: G01N29/44 ,  G01H9/00 ,  G01M3/24 ,  G01N29/46 ,  G01W1/00

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.

公开(公告)号：US11053791B2

公开(公告)日：2021-07-06

申请号：US16563544

申请日：2019-09-06

Applicant: BP Exploration Operating Company Limited

Inventor： Tommy Langnes ,  Pradyumna Thiruvenkatanathan

IPC: E21B47/10 ,  E21B47/107 ,  E21B49/00 ,  G01V1/22 ,  G01V1/50 ,  E21B43/26 ,  G01V1/00 ,  E21B47/135 ,  G01H3/04 ,  G01H9/00 ,  E21B33/13 ,  E21B34/06 ,  E21B43/14

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.