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公开(公告)号：US11815639B2
公开(公告)日：2023-11-14
申请号：US16670560
申请日：2019-10-31
CPC分类号： G01V1/133 , C09K8/32 , G01V1/159 , G01V11/005
摘要： A method and systems for performing a borehole operation with a borehole fluid that includes applying an amplitude oscillation deformation force to a sample of the borehole fluid over a period of time, measuring the deformation force from the sample, determining a storage modulus of the borehole fluid over the period of time based on the measured deformation force, determining a gel strength of the borehole fluid by correlation with the storage modulus, comparing the gel strength with a desired gel strength and if the gel strength is outside of an acceptable range of the desired gel strength, adjusting a drilling parameter, a composition of the borehole fluid, or a combination thereof, and using the borehole fluid in the borehole operation. Determining the storage modulus and the gel strength may be done using a processor and the force may be applied using a piezoelectric device.
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公开(公告)号：US11662496B2
公开(公告)日：2023-05-30
申请号：US17327792
申请日：2021-05-24
发明人： Brenno Caetano Troca Cabella , Ruijia Wang , Chung Chang , Qingtao Sun , Yao Ge , Xiang Wu , Pablo Vieira Rego , Marco Aurelio Luzio , João Vicente Gonçalves Rocha
CPC分类号： G01V1/50 , E21B47/005 , G01N33/383 , G01V1/159 , G06F30/20 , E21B47/12 , E21B2200/20 , G01V2210/1299 , G01V2210/1429
摘要： Methods, systems, and program products are disclosed for implementing acoustic logging and determining wellbore material characteristics. In some embodiments, a method may include determining a polar differential signal for each of one or more pairs of azimuthally offset acoustic measurements within a wellbore. A reference azimuth is identified based, at least in part, on comparing the polar differential signals to a modeled bonding differential signal within a target response window. The method further includes determining differences between an acoustic measurement at the reference azimuth and acoustic measurements at one or more other azimuths and determining a wellbore material condition based, at least in part, on the determined differences.
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公开(公告)号：US20220283329A1
公开(公告)日：2022-09-08
申请号：US17194106
申请日：2021-03-05
发明人： Paul M. Zwartjes , Rob Hegge , Roald Van Borselen
摘要： A method may include obtaining seismic data regarding a geological region of interest. The seismic data may include various pre-processed gathers. The method may further include obtaining a machine-learning model that is pre-trained to predict migrated seismic data. The method may further include selecting various training gathers based on a portion of the pre-processed gathers, a migration function, and a velocity model. The method may further include generating a trained model using the training gathers, the machine-learning model, and a machine-learning algorithm. The method may further include generating a seismic image of the geological region of interest using the trained model and a remaining portion of the seismic data.
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公开(公告)号：US11143777B2
公开(公告)日：2021-10-12
申请号：US16342910
申请日：2018-08-13
发明人： Jing Jin , Chung Chang
IPC分类号： G01V1/52 , E21B47/017 , G01V1/02
摘要： The disclosed embodiments include quadrupole transmitters and methods to determine wave velocities of a downhole formation. In some embodiments, the quadrupole transmitter has a first piezoelectric ring and a second piezoelectric ring that alternatively contracts and expands in opposite radial directions relative to the first piezoelectric ring in response to being simultaneously excited with the first piezoelectric ring. The quadrupole transmitter also includes a covering sleeve surrounding exterior surfaces of the two piezoelectric rings. The quadrupole transmitter further includes a windowed sleeve surrounding the two piezoelectric rings and having a first portion and a second portion adjacent to the first portion. The first portion and the second portion are formed from multiple window sections and adjacent covered sections that are positioned around different sections of the piezoelectric rings to allow transmission of quadrupole acoustic signals when the piezoelectric rings are simultaneously excited.
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公开(公告)号：US10539694B2
公开(公告)日：2020-01-21
申请号：US15332895
申请日：2016-10-24
申请人： PGS Geophysical AS
IPC分类号： G01V1/00 , G01V1/02 , G01V1/38 , G01V1/16 , H01L41/053
摘要： Embodiments related to a sound source that comprises a base plate configured to bend and generate acoustic energy; a spring coupled to the base plate; and a mass element coupled to the spring, wherein the sound source is operable to produce at least two resonance frequencies in the sound source.
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公开(公告)号：US10241223B2
公开(公告)日：2019-03-26
申请号：US15300214
申请日：2015-11-19
发明人： Jing Jin , Abdul Wahab Chowdhury
摘要： A sensor system for use in a wellbore is provided that can include a piezoelectric transducer for transmitting an acoustic wave into a fluid medium positioned in the wellbore by repeatedly bending between two positions in response to an actuation signal. The piezoelectric transducer can include at least four piezoelectric layers stacked on top of one another. Each of the four piezoelectric layers can be coupled to an adjacent layer via a bonding material. Each of the four piezoelectric layers can include a piezoelectric material, a top electrode coupled to a top surface of the piezoelectric material, and a bottom electrode coupled to a bottom surface of the piezoelectric material. The sensor system can also include a hydrophone for detecting a reflection or a refraction of the acoustic wave off an object in the wellbore and transmitting an associated signal to a processing device.
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公开(公告)号：US10088583B2
公开(公告)日：2018-10-02
申请号：US14637363
申请日：2015-03-03
申请人： WesternGeco L.L.C.
发明人： Claudio Bagaini , Ian Moore
摘要： A technique includes generating vibroseis sweeps for a vibroseis survey to produce seismic data acquired in response to seismic signals produced by the sweeps. The generation of the vibroseis sweeps including temporally arranging the sweeps into time-overlapping groups. The technique includes regulating a timing of the groups relative to each other based on a slip time. The technique also includes regulating a timing of the sweeps of each group such that consecutive sweep firings of each group are spaced apart by a time substantially less than the slip time.
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公开(公告)号：US09903967B2
公开(公告)日：2018-02-27
申请号：US15420540
申请日：2017-01-31
申请人： PGS Geophysical AS
CPC分类号： G01V1/159 , B06B1/045 , B06B2201/53 , G01V1/135 , G01V1/38 , G01V1/3808 , G01V2210/1214 , G10K11/205
摘要： This disclosure is related to marine seismic sources, for example marine seismic sources known in the art as benders. Some embodiments of this disclosure use magnetic reluctance forces to produce seismic energy. For example, pole pieces may be attached to one or more plates of a marine seismic source, and a wire coil may induce an attractive force between the pole pieces to cause deformation of the plates to produce seismic energy. Such marine seismic sources may be components of a marine seismic survey system, and may be used in a method of marine seismic surveying. Methods of making marine seismic sources are also disclosed.
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公开(公告)号：US20170299739A1
公开(公告)日：2017-10-19
申请号：US15430241
申请日：2017-02-10
申请人： PGS Geophysical AS
摘要： Disclosed are devices and methods for marine geophysical surveying. An example device may comprise a shell, a base plate, wherein the base plate is coupled to the shell, a driver disposed within the shell, an inner spring element disposed within the shell, wherein the inner spring element is coupled to the driver, wherein outer ends of the inner spring element are coupled to outer ends of the inner spring element at spring element junctions, an outer spring element disposed within the shell, wherein outer ends of the outer spring element are coupled to the spring element junctions, and a back mass disposed on the outer spring element.
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公开(公告)号：US20170153341A1
公开(公告)日：2017-06-01
申请号：US15420540
申请日：2017-01-31
申请人： PGS Geophysical AS
CPC分类号： G01V1/159 , B06B1/045 , B06B2201/53 , G01V1/135 , G01V1/38 , G01V1/3808 , G01V2210/1214 , G10K11/205
摘要： This disclosure is related to marine seismic sources, for example marine seismic sources known in the art as benders. Some embodiments of this disclosure use magnetic reluctance forces to produce seismic energy. For example, pole pieces may be attached to one or more plates of a marine seismic source, and a wire coil may induce an attractive force between the pole pieces to cause deformation of the plates to produce seismic energy. Such marine seismic sources may be components of a marine seismic survey system, and may be used in a method of marine seismic surveying. Methods of making marine seismic sources are also disclosed.
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