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公开(公告)号：US20200241156A1
公开(公告)日：2020-07-30
申请号：US16649546
申请日：2017-09-21
Inventor： Mathias CONTANT , Victor Sergeevich ZHUZHEL
IPC: G01V1/18
Abstract: A seismic sensor includes an outer housing having a central axis, an upper end, a lower end, and an inner cavity. In addition, the seismic sensor includes a proof mass moveably disposed in the inner cavity of the outer housing. The outer housing is configured to move axially relative to the proof mass. Further, the seismic sensor includes a first biasing member disposed in the inner cavity and axially positioned between the proof mass and one of the ends of the outer housing. The first biasing member is configured to flex in response to axial movement of the outer housing relative to the proof mass. The first biasing member comprises a disc including a plurality of circumferentially-spaced slots extending axially therethrough. Still further, the seismic sensor includes a sensor element disposed in the inner cavity and axially positioned between the first biasing member and one of the ends of the outer housing. The sensor element includes a piezoelectric material configured to deflect and generate a potential in response to the axial movement of the outer housing relative to the proof mass and the flexing of the first biasing member.
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公开(公告)号：US20200230554A1
公开(公告)日：2020-07-23
申请号：US16645426
申请日：2018-09-12
Applicant: BP Exploration Operating Company Limited
Inventor： Ian Ralph Collins , John William Couves , John Henry Crouch , John Dale Williams
Abstract: A method includes producing a first blended low salinity injection water for injection into at least one injection well that penetrates a first region of an oil-bearing reservoir and producing a second blended low salinity injection water for injection into at least one injection well that penetrates a second region of an oil-bearing reservoir. The reservoir rock of the first and second regions has first and second rock compositions, respectively, that present different risks of formation damage. The first and second blended low salinity injection waters comprise variable amounts of nanofiltration permeate and reverse osmosis permeate. The compositions of the first and second blended low salinity injection waters are maintained within first and second predetermined operating envelopes, respectively, that balance improving enhanced oil recovery from the first and second regions while reducing formation damage upon injecting the first and second blended low salinity injection waters into the oil-bearing reservoir.
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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：US20200173273A1
公开(公告)日：2020-06-04
申请号：US16698335
申请日：2019-11-27
Applicant: BP Exploration Operating Company Limited
Inventor： Pradyumna THIRUVENKATANATHAN
IPC: E21B47/10
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.
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公开(公告)号：US10579025B2
公开(公告)日：2020-03-03
申请号：US15307287
申请日：2015-04-15
Applicant: BP Exploration Operating Company Limited
Inventor： Peter Salino
Abstract: A method for recovering crude oil from a reservoir that is penetrated by at least one injection well and at least one production well wherein the reservoir comprises a first carbonate rock layer and a second carbonate rock layer each having crude oil and a resident water present within the pore space thereof, the method comprising: isolating the second rock layer from direct hydraulic communication with the injection well; and injecting an injection water having a total-dissolved-solids (TDS) content lower than the TDS content of the resident water from the injection well into the first rock layer thereby forming a sulfate enriched aqueous displacement fluid through dissolution of water-soluble sulfate minerals from the first rock layer into the injection water wherein the displacement fluid flows through the first rock layer and from the first rock layer into and through the second rock layer thereby displacing oil towards the production well.
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Patent Agency Ranking
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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公开(公告)号：US10227858B2
公开(公告)日：2019-03-12
申请号：US14790090
申请日：2015-07-02
Applicant: BP EXPLORATION OPERATING COMPANY LIMITED
Inventor： Ian Ralph Collins , Stephanie Jane Houston , Kevin John Webb
Abstract: A computer-implemented method for determining one or more operating modes for a crude oil displacement system is provided. The crude oil displacement system is arranged to inject an aqueous displacement fluid into one or more reservoirs, each reservoir comprising a porous and permeable rock formation, wherein crude oil and formation water are contained within a pore space of the rock formation. The crude oil displacement system is for use in displacing crude oil from the pore space of the rock formation. The computer-implemented method comprises the steps of receiving measurement data associated with one or more chemical characteristics of the displacement fluid and one or more chemical characteristics of the rock formation, the crude oil and the formation water of the one or more reservoirs, and inputting the measurement data and data representing a predetermined volume of oil into a computer-implemented predictive model. The predictive model is operated so as to generate predicted data indicative of a predicted additional amount of oil, compared to the predetermined volume of oil, that will be displaced by configuring the crude oil displacement system so as to inject the displacement fluid having the chemical characteristics into the one or more reservoirs. On the basis of the predicted data, the one or more operating modes of the crude oil displacement system are determined. A further computer-implemented method employing the predictive model in which predicted data indicative of one or more predicted chemical characteristics of the displacement fluid are generated is also provided. Additionally, a system for configuring a crude oil displacement system is provided.
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公开(公告)号：US10139506B2
公开(公告)日：2018-11-27
申请号：US15125859
申请日：2015-03-12
Inventor： John Gerard Bouska
Abstract: A seismic survey apparatus includes a body, a proof mass, at least one sensor arranged to detect movement of the proof mass relative to the body. In addition, the seismic survey apparatus includes electronic circuitry connected to the at least one sensor. The electronic circuitry is configured to receive and process an output of the sensor. A power supply is arranged to provide electrical power to the electronic circuitry with the power supply being an integral part of the proof mass.
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