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11.发明申请公开(公告)号：US20170371072A1
公开(公告)日：2017-12-28
申请号：US15544187
申请日：2016-01-25
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Sushil Shetty , Lin Liang , Tarek M. Habashy , Vanessa Simoes , Austin Boyd , Bikash K. Sinha , Smaine Zeroug
CPC classification number: G01V99/005 , G01N15/088 , G01V11/00 , G01V2210/1429 , G01V2210/622
Abstract: A method for determining properties of a formation traversed by a well or wellbore employs measured sonic data, resistivity data, and density data for an interval-of-interest within the well or wellbore. A formation model that describe properties of the formation at the interval-of-interest is derived from the measured sonic data, resistivity data, and density data for the interval-of-interest. The formation model is used to derive simulated sonic data, resistivity data, and density data for the interval-of-interest. The measured sonic data, resistivity data, and density data for the interval-of-interest and the simulated sonic data, resistivity data, and density data for the interval-of-interest are used to refine the formation model and determine properties of the formation at the interval-of-interest. The properties of the formation may be a radial profile for porosity, a radial profile for water saturation, a radial profile for gas saturation, a radial profile of oil saturation, and a radial profile for pore aspect ratio.
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公开(公告)号：US09784875B2
公开(公告)日：2017-10-10
申请号：US14612101
申请日：2015-02-02
Applicant: Schlumberger Technology Corporation
Inventor： Smaine Zeroug , Jiaqi Yang , Sandip Bose
CPC classification number: G01V1/50 , E21B47/0005 , E21B47/14
Abstract: Embodiments of the disclosure may include systems and methods for estimating an acoustic property of an annulus in a cement evaluation system. In one embodiment, a casing arrival signal is acquired at acoustic receivers a cement evaluation tool. A spectral amplitude ratio is calculated based on the casing arrival signal. The spectral amplitude ratio is scanned to detect and identify discontinuities. If discontinuities are detected, the frequency at the discontinuity may be used to estimate a wavespeed of the annulus. If discontinuities are not detected, attenuation dispersions are calculated and estimated, and an estimated wavespeed and parameters are updated until the calculated and estimated attenuation dispersions match.
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公开(公告)号：US12055672B2
公开(公告)日：2024-08-06
申请号：US17288622
申请日：2019-10-24
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Ting Lei , Sandip Bose , Smaine Zeroug
CPC classification number: G01V1/50 , E21B47/14 , G01V1/46 , G01V2210/1429 , G01V2210/6169 , G01V2210/624 , G01V2210/74
Abstract: A method, computer program product, and computing system for generating high resolution slowness logs. The method computer program product, and computing system includes receiving a plurality of sonic logs from at least one sensor array and generating at least one high-resolution slowness log from the plurality of sonic logs based upon, at least in part, monopole and dipole data from the plurality of sonic logs.
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14.发明授权公开(公告)号：US12000973B2
公开(公告)日：2024-06-04
申请号：US17659913
申请日：2022-04-20
Applicant: Schlumberger Technology Corporation
Inventor： Sandip Bose , Ralph D'Angelo , Smaine Zeroug
IPC: G01V1/50
CPC classification number: G01V1/50 , G01V2210/74
Abstract: Aspects described herein provide for methods and apparatus for characterizing azimuthal heterogeneities in a barrier installed outside an outer casing in a borehole traversing a formation in a cased hole configuration including an inner and outer casing. The approach is based on specific attributes in sonic signals acquired with an azimuthal and axial array receiver system located inside the inner casing. The methods include slowness-time-coherence (STC) processing based on specific arrivals identified in data acquired by axial arrays associated with multiple azimuthal sections of the receiver system. The specific arrivals contain STC signatures that can be examined in terms of coherence amplitude and localization within STC maps. Based on specific attributes in the sonic signals, an azimuthal coverage of the outer casing annular contents can be created.
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15.发明授权公开(公告)号：US11493659B2
公开(公告)日：2022-11-08
申请号：US16759667
申请日：2018-10-25
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Bo Fan , Maja Skataric , Sandip Bose , Shuchin Aeron , Smaine Zeroug
Abstract: A sonic tool is activated in a well having multiple casings and annuli surrounding the casing. Detected data is preprocessed using slowness time coherence (STC) processing to obtain STC data. The STC data is provided to a machine learning module which has been trained on labeled STC data. The machine learning module provides an answer product regarding the states of the borehole annuli which may be used to make decision regarding remedial action with respect to the borehole casings. The machine learning module may implement a convolutional neural network (CNN), a support vector machine (SVM), or an auto-encoder.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20200096663A1
公开(公告)日：2020-03-26
申请号：US16612320
申请日：2018-04-23
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Sushil Shetty , Qiwei Zhan , Lin Liang , Austin Boyd , Smaine Zeroug , Vanessa Simoes , Fabio Cesar Canesin
Abstract: A method for determining properties of a laminated formation traversed by a well or wellbore employs measured sonic data, resistivity data, and density data for an interval-of-interest within the well or wellbore. A formation model that describe properties of the laminated formation at the interval-of-interest is derived from the measured sonic data, resistivity data, and density data for the interval-of-interest. The formation model represents the laminated formation at the interval-of-interest as first and second zones of different first and second rock types. The formation model is used to derive simulated sonic data, resistivity data, and density data for the interval-of-interest. The measured sonic data, resistivity data, and density data for the interval-of-interest and the simulated sonic data, resistivity data, and density data for the interval-of-interest are used to refine the formation model and determine properties of the formation at the interval-of-interest. The properties of the formation may be a radial profile for porosity, a radial profile for water saturation, a radial profile for gas saturation, radial profile of oil saturation, and radial profiles for pore shapes for the first and second zones (or rock types).
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公开(公告)号：US10393905B2
公开(公告)日：2019-08-27
申请号：US15238524
申请日：2016-08-16
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Bikash K. Sinha , Sandip Bose , Jiaqi Yang , Ting Lei , Tarek M. Habashy , Smaine Zeroug , Ma Luo
Abstract: A method for torsional wave logging in a borehole of a subterranean formation. The method includes obtaining a torsional wave measurement of the borehole, wherein the torsional wave measurement represents characteristics of a torsional wave propagating within a cylindrical layered structure associated with the borehole, wherein the cylindrical layered structure comprises the subterranean formation and a completion of the borehole, analyzing, by a computer processor, the torsional wave measurement to generate a quality measure of the completion, and displaying the quality measure of the completion.
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公开(公告)号：US10012749B2
公开(公告)日：2018-07-03
申请号：US14887746
申请日：2015-10-20
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Sandip Bose , Smaine Zeroug , Jiaqi Yang
CPC classification number: G01V1/50 , E21B47/0005 , G01V1/306
Abstract: Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, and the formation. A crude casing thickness, tool position (e.g., eccentering), mud sound velocity may be estimated using the acoustic data. Techniques also involve computing a model spectra and an estimated casing thickness using a forward model and based on a crude casing thickness, an initial mud acoustic impedance, and an initial annular acoustic impedance, estimating a specular signal using the model spectra and the acoustic data in a first time window, computing a calibrated model signal using the estimated specular signal and computed model spectra, computing a misfit of the computed calibrated model signal and acoustic data in a second time window comprising the initial time window, and computing a correction update to one or more of the estimated casing thickness an estimated apparent annular acoustic impedance and an estimated mud acoustic impedance, based on the misfit. Techniques involve iteratively estimating the model spectra and the Jacobian curve, computing the specular signal, computing the misfit, and computing the update until the update is below a threshold. Outputs may include one or more of a casing thickness, an apparent acoustic impedance of the annular fill material, and the acoustic impedance of mud.
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公开(公告)号：US20170168179A1
公开(公告)日：2017-06-15
申请号：US15335797
申请日：2016-10-27
Applicant: Schlumberger Technology Corporation
Inventor： Mikhail Lemarenko , Christoph Klieber , Sylvain Thierry , Sandip Bose , Smaine Zeroug
CPC classification number: G01V1/306 , E21B47/0005 , E21B47/082 , G01V1/282 , G01V1/32 , G01V1/50 , G01V2210/6224 , G01V2210/6226 , G01V2210/677
Abstract: Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, one or more interfaces between any of the mud, the casing, and the annular fill material. Techniques include normalizing the acoustic wave to result in a normalized wave having a comparable spectral shape with a reference wave, and comparing the normalized wave with the reference wave. The reference wave may be generated or modeled or produced from a look-up table or database, and may be estimated based on initial estimates of wellbore parameters. Based on the comparison of the normalized wave with the reference wave, a best-fit reference wave substantially matching the normalized wave may be identified. The best-fit reference wave may correspond with a thickness of the casing, an acoustic impedance of the annular fill material, and an acoustic impedance of mud.
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公开(公告)号：US09448321B2
公开(公告)日：2016-09-20
申请号：US13734728
申请日：2013-01-04
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Bikash K. Sinha , Sandip Bose , Jiaqi Yang , Ting Lei , Tarek M. Habashy , Smaine Zeroug , Ma Luo
CPC classification number: G01V1/50 , E21B47/0005
Abstract: A method for torsional wave logging in a borehole of a subterranean formation. The method includes obtaining a torsional wave measurement of the borehole, wherein the torsional wave measurement represents characteristics of a torsional wave propagating within a cylindrical layered structure associated with the borehole, wherein the cylindrical layered structure comprises the subterranean formation and a completion of the borehole, analyzing, by a computer processor, the torsional wave measurement to generate a quality measure of the completion, and displaying the quality measure of the completion.
Abstract translation: 一种地下地层井眼扭转波测井方法。 该方法包括获得钻孔的扭转波测量，其中扭转波测量表示在与钻孔相关联的圆柱形分层结构内传播的扭转波的特征，其中圆柱形分层结构包括地层并完成钻孔， 通过计算机处理器分析扭转波测量以产生完成的质量测量，并且显示完成的质量测量。
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