公开(公告)号：US20220275713A1

公开(公告)日：2022-09-01

申请号：US17627104

申请日：2020-07-09

Applicant: BP Exploration Operating Company Limited

Inventor： Patrick CALVERT ,  Gennaro DELLO IOIO ,  Andrew WOODS

IPC: E21B43/14

Abstract: Systems and methods are disclosed for managing skin in a subterranean wellbore. In an embodiment, the method includes oscillating a drawdown pressure of the subterranean wellbore in a predetermined pattern that comprises a plurality of alternating drawdown pressure increases and drawdown pressure decreases. The drawdown pressure increases of the predetermined pattern comprise increasing the drawdown pressure at a first rate, and the drawdown pressure decreases of the predetermined pattern comprise decreasing the drawdown pressure at a second rate that is different from the first rate.

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.

公开(公告)号：US11269102B2

公开(公告)日：2022-03-08

申请号：US16317099

申请日：2017-07-06

Applicant: BP Exploration Operating Company Limited

Inventor： John Gerard Bouska ,  Amine Ourabah ,  Robin Roy Wye

IPC: G01V1/06 ,  G01V1/36 ,  G01V1/18 ,  G01V13/00 ,  G01V1/16

Abstract: A method for processing seismic data includes receiving, by a seismic data processing system, signals representing seismic data recorded at a remote location. In addition, the method includes receiving, by the seismic data processing system, identification of a sensor via which the signals were acquired. Further, the method includes retrieving, by the seismic data processing system, a sensor transfer function that corresponds to the sensor and relates the motion of the sensor to the signals. The method also includes generating, by the seismic data processing system, based on the sensor transfer function and a reference transfer function, an inverse filter that when applied to the signals changes parameters of the signals to correspond to the reference transfer function. Moreover, the method includes applying, by the seismic data processing system, the inverse filter to the signals to conform the parameters of the signals to the reference transfer function.

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：US20210389486A1

公开(公告)日：2021-12-16

申请号：US17295368

申请日：2019-11-27

Applicant: BP Exploration Operating Company Limited

Inventor： Pradyumna THIRUVENKATANATHAN

IPC: G01V1/28 ,  G01V1/50 ,  G01V1/30 ,  G01V1/00 ,  E21B47/14 ,  E21B47/107 ,  G06F30/28

Abstract: A method of identifying inflow locations along a wellbore comprises 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 comprises 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：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：US11185821B2

公开(公告)日：2021-11-30

申请号：US16491250

申请日：2018-03-26

Applicant: BP Exploration Operating Company Limited

Inventor： John Henry Crouch

IPC: B01D61/02 ,  B01D61/58

Abstract: A desalination system includes a feed pump having an inlet side and an outlet side. In addition, the system includes a first RO stage having an inlet, RO permeate outlet and RO concentrate outlet. Further, the system includes a second RO stage having an inlet, RO permeate outlet and RO concentrate outlet and an NF stage having an inlet, NF permeate outlet and an NF concentrate outlet. The system also includes a set of conduits adapted to connect: (a) the outlet side of the feed pump to the inlet of the first RO stage; (b) the concentrate outlet of the first RO stage to (i) the inlet of the second RO stage and to the inlet of the NF stage; and (c) the permeate outlet of the first RO stage, the permeate outlet of the second RO stage and the permeate outlet of the NF stage either directly or indirectly to a low salinity water injection line.

公开(公告)号：US20210215030A1

公开(公告)日：2021-07-15

申请号：US17053700

申请日：2019-05-10

Applicant: BP EXPLORATION OPERATING COMPANY LIMITED

Inventor： Stuart William DAY ,  Christopher Kylie MAIR

IPC: E21B43/38 ,  E21B43/20

Abstract: A method of dynamically allocating a total amount of produced water (PW) from a reservoir during enhanced oil recovery (EOR) via a low salinity or softened water EOR flood by receiving measurement data; receiving reservoir configuration information comprising: an EOR injection rate associated with one or more EOR injection zones, a disposal zone injection rate associated with one or more disposal injection zones, and a non-reinjection disposal rate associated with one or more non-reinjection disposal routes; determining a blending rate comprising at least a portion of the PW production rate and at least a portion of the low salinity or softened water injection rate to provide a blended injection fluid; blending at least a portion of the PW with at least a portion of the low salinity or softened water at the blending rate; and dynamically allocating the PW production rate among injection and/or non-reinjection routes.

公开(公告)号：US20210047916A1

公开(公告)日：2021-02-18

申请号：US16992315

申请日：2020-08-13

Applicant: BP Exploration Operating Company Limited ,  BP Corporation North America, Inc.

Inventor： Pradyumna THIRUVENKATANATHAN ,  Fei CAO

IPC: E21B47/107 ,  E21B47/135 ,  G01H9/00 ,  G01V1/30 ,  G01V1/28

Abstract: A method of characterizing an inflow into a wellbore includes obtaining an acoustic signal from a sensor within the wellbore. In addition, the method includes determining a plurality of frequency domain features from the acoustic signal. Further, the method includes identifying at least one of a gas phase flow, an aqueous phase flow, or a hydrocarbon liquid phase flow using the plurality of the frequency domain features. The method also includes classifying a flow rate of the at least one of the gas phase flow, the aqueous phase flow, or the hydrocarbon liquid phase flow using the plurality of frequency domain features. The acoustic signal comprises acoustic samples across a portion of a depth of the wellbore.

公开(公告)号：US20200248514A1

公开(公告)日：2020-08-06

申请号：US16637285

申请日：2018-08-09

Applicant: BP Exploration Operating Company Limited

Inventor： Ian Ralph Collins ,  John William Couves ,  John Henry Crouch ,  John Dale Williams

IPC: E21B21/06 ,  E21B43/20 ,  E21B49/00

Abstract: An integrated system includes a desalination plant including a reverse osmosis (RO) array to produce an RO permeate blending stream and a nanofiltration (NF) array to produce an NF permeate blending stream. The integrated system also includes a blending system, a control unit, and an injection system for an injection well that penetrates an oil-bearing layer of a reservoir. The blending system is to blend the RO permeate blending stream and the NF permeate blending stream to produce a blended injection water stream. The control unit is to dynamically alter operation of the blending system to adjust amounts of at least one of the RO permeate blending stream and the NF permeate blending stream to alter the composition of the blended injection water stream from an initial composition to a target composition.