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1.发明授权公开(公告)号：US11988802B2
公开(公告)日：2024-05-21
申请号：US17438340
申请日：2020-03-09
Applicant: Schlumberger Technology Corporation
Inventor： Paul Ryan Craddock , Lalitha Venkataramanan , Prakhar Srivastava , Harish Baban Datir
IPC: G01V5/10 , E21B49/00 , G01N33/24 , G06N3/04 , G06N3/045 , G06N3/08 , G06N3/084 , G06N3/088 , E21B49/02 , G06N3/082
CPC classification number: G01V5/101 , E21B49/00 , E21B49/005 , G01N33/24 , G06N3/045 , G06N3/08 , G06N3/084 , G06N3/088 , E21B49/02 , E21B2200/20 , E21B2200/22 , G06N3/082
Abstract: Methods and systems are provided to learn and apply a mapping function from data representing concentrations of atomic elements in a geological formation (or other data corresponding thereto) to mineral component concentrations in the geological formation (and/or from mineral component concentrations to reconstructed elemental concentrations in the geological formation). The mapping function can be derived from a trained neural network (such as an autoencoder). The output of the mapping function can be used to determine estimates of one or more formation properties, such as formation matrix density, formation porosity, matrix Sigma, formation saturation, other formation property, or combinations thereof.
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2.发明申请公开(公告)号：US20220187495A1
公开(公告)日：2022-06-16
申请号：US17310991
申请日：2020-03-11
Applicant: Schlumberger Technology Corporation
Inventor： Denise E. Freed , Harish Baban Datir , Peter Tilke , Oliver C. Mullins , Lalitha Venkataramanan , Sandip Bose
Abstract: Embodiments herein include a system and method for modeling and interpreting an evolution of fluids in an oilfield using artificial intelligence. Embodiments may include identifying, using at least one processor, one or more reservoir fluid dynamics processes or properties and generating a model for the one or more reservoir fluid dynamics processes or properties. Embodiments may include receiving, at the model, one or more parameter values corresponding to the one or more reservoir fluid dynamics processes or properties and displaying, at a graphical user interface, one or more results, based upon, at least in part, the model and the one or more parameter values.
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公开(公告)号：US20220128727A1
公开(公告)日：2022-04-28
申请号：US17310998
申请日：2020-03-11
Applicant: Schlumberger Technology Corporation
Inventor： Harish B. Datir , Jean-Marc Donadille , Oliver C. Mullins , Vladislav Achourov , Lalitha Venkataramanan
Abstract: Methods and systems are provided for conducting formation analysis. Data from borehole logging tools is used to conduct a petrophysical analysis of the formation in order to determine (quantify) total porosity and formation matrix permittivity for an interval of the formation. Noninvaded zone water saturation and flushed zone water saturation for the interval of the formation is determined using a saturation model of the interval. The noninvaded zone water saturation is compared to the flushed zone water saturation, and the results of the comparison are used to determine that the interval of the formation contains movable hydrocarbon, immobile hydrocarbon or movable formation water.
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公开(公告)号：US20190011517A1
公开(公告)日：2019-01-10
申请号：US15943787
申请日：2018-04-03
Applicant: Schlumberger Technology Corporation
Inventor： Lalitha Venkataramanan , Fred K. Gruber , Tarek M. Habashy , Ridvan Akkurt , Badarinadh Vissapragada , Richard E. Lewis , Erik Rylander
Abstract: A methods are provided for investigating a sample containing hydrocarbons by subjecting the sample to a nuclear magnetic resonance (NMR) sequence using NMR equipment, using the NMR equipment to detect signals from the sample in response to the NMR sequence, analyzing the signals to extract a distribution of relaxation times (or diffusions), and computing a value for a parameter of the sample as a function of at least one of the relaxation times (or diffusions), wherein the computing utilizes a correction factor that modifies the value for the parameter as a function of relaxation time for at least short relaxation times (or as a function of diffusion for at least large diffusion coefficients).
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公开(公告)号：US10041893B2
公开(公告)日：2018-08-07
申请号：US14581307
申请日：2014-12-23
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Marcus Hofheins Donaldson , Denise Freed , Martin Hurlimann , Yi-Qiao Song , Lalitha Venkataramanan
Abstract: Methods are provided for identifying one or more transition characteristics in a hydrocarbon fluid such as asphaltene onset pressure (AOP), bubble point or dew point. A transition characteristic is determined by subjecting the fluid to different pressures or temperatures, conducting NMR tests at the different pressures or temperatures to obtain signals, processing the signals to obtain values of a function of an NMR parameter as a function of pressure or temperature, and analyzing the values to find a discontinuity that identifies the transition characteristic. In embodiments, the NMR parameters may include at least one of a relaxation parameter such as T2 or a T1-T2 ratio, a diffusion parameter and an initial magnetization parameter. In embodiments, dual linear fitting, Bayesian change point detection algorithms, and instantaneous slope analysis may be utilized to analyze the values in order to find a discontinuity.
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Patent Agency Ranking
公开(公告)号：US09753176B2
公开(公告)日：2017-09-05
申请号：US13767721
申请日：2013-02-14
Applicant: Schlumberger Technology Corporation
Inventor： Ashish Datey , Timothy Andrew John Hopper , Lalitha Venkataramanan
CPC classification number: G01V3/32 , E21B47/00 , G01V3/26 , Y02A90/344
Abstract: Adsorbed gas in a formation may be estimated. Nuclear magnetic resonance (NMR) data for a subsurface geological formation is obtained, and at least a portion of the NMR data is corrected to produce corrected NMR data. A NMR-based estimate of formation porosity is determined using the corrected NMR data. Dielectric permittivity data for the subsurface geological formation is obtained, and a dielectric permittivity-based estimate of the formation water-filled porosity is determined using the dielectric permittivity data. A gas volume is determined using the determined NMR-based estimate of the formation porosity and the determined dielectric permittivity-based estimate of the formation water-filled porosity. The gas volume may be determined by subtracting the determined dielectric permittivity-based estimate of the formation water-filled porosity from the determined NMR-based estimate of the formation porosity. The gas volume per unit volume of the formation may be determined using an equation of state.
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7.发明授权公开(公告)号：US09733383B2
公开(公告)日：2017-08-15
申请号：US14109497
申请日：2013-12-17
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Denise E. Freed , Lalitha Venkataramanan
CPC classification number: G01V3/32 , E21B49/088 , G01N24/081 , G01V11/00
Abstract: Methods and apparatuses are provided for analyzing a composition of a hydrocarbon-containing fluid. The methods include using a nuclear magnetic resonance (NMR) tool to conduct NMR measurements on the hydrocarbon-containing fluid to obtain NMR data. A non-NMR tool, such as an optical tool, is used to conduct additional measurements and to obtain non-NMR data on the fluid. The methods further include determining an indication of the composition of the fluid by using the NMR data and normalizing the indication of the composition of the fluid using the non-NMR data.
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8.发明申请公开(公告)号：US20170123104A1
公开(公告)日：2017-05-04
申请号：US14962201
申请日：2015-12-08
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Jean-Marc Donadille , Lalitha Venkataramanan , Vasileios-Marios Gkortsas , Stacy Lynn Reeder Blanco
CPC classification number: G01N15/088 , E21B49/00 , G01N27/221 , G01V3/06 , G01V3/32
Abstract: Methods are provided for determining values of a pore cementation exponent m and/or a saturation exponent n for locations in a formation having similar petrophysical properties. Formation porosity, formation water saturation, and an apparent cementation exponent mn are obtained for the locations and their values are utilized to find the exponents. In one embodiment, the apparent cementation exponent and the formation water saturation are obtained from a dielectric logging tool.
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公开(公告)号：US20150177351A1
公开(公告)日：2015-06-25
申请号：US14406503
申请日：2013-05-24
Applicant: Schlumberger Technology Corporation
Inventor： Lalitha Venkataramanan , Fred K. Gruber , Tarek M. Habashy , Ridvan Akkurt , Badarinadh Vissapragada , Richard E. Lewis , Erik Rylander
CPC classification number: G01R33/54 , G01N24/08 , G01N24/081 , G01R33/448 , G01V3/14 , G01V3/32 , G01V3/38
Abstract: A methods are provided for investigating a sample containing hydrocarbons by subjecting the sample to a nuclear magnetic resonance (NMR) sequence using NMR equipment, using the NMR equipment to detect signals from the sample in response to the NMR sequence, analyzing the signals to extract a distribution of relaxation times (or diffusions), and computing a value for a parameter of the sample as a function of at least one of the relaxation times (or diffusions), wherein the computing utilizes a correction factor that modifies the value for the parameter as a function of relaxation time for at least short relaxation times (or as a function of diffusion for at least large diffusion coefficients).
Abstract translation: 提供了一种用于通过使用NMR设备使用NMR设备对样品进行核磁共振（NMR）序列来检测含有烃的方法，以响应于NMR序列检测来自样品的信号，分析信号以提取 弛豫时间（或扩散）的分布，以及将样本的参数的值计算为弛豫时间（或扩散）中的至少一个的函数，其中所述计算利用修正因子，其将所述参数的值修改为 松弛时间的函数至少较短的弛豫时间（或作为至少大的扩散系数的扩散的函数）。
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公开(公告)号：US20140380134A1
公开(公告)日：2014-12-25
申请号：US14374429
申请日：2013-01-30
Applicant: Schlumberger Technology Corporation
Inventor： Nicholas N. Bennett , Lalitha Venkataramanan , Nicholas Heaton
CPC classification number: G06F11/10 , G01R33/4625 , G01V3/14 , G01V3/32 , H04B7/24
Abstract: A method of obtaining nuclear magnetic resonance (NMR) data from a subterranean formation may include operating a tool in a subterranean formation for generating both NMR data and NMR scaled data based upon NMR measurements of the subterranean formation. The method may also include operating the tool for encoding and transmitting both the NMR data and NMR scaled data, and receiving and decoding, above the subterranean formation, both the NMR data and NMR scaled data from the tool. The method may also include performing error-correction of the received and decoded NMR data based upon the received and decoded NMR scaled data.
Abstract translation: 从地层获得核磁共振（NMR）数据的方法可包括在地下地层中操作工具，用于基于地层的NMR测量产生NMR数据和NMR缩放数据。 该方法还可以包括操作用于编码和传输NMR数据和NMR缩放数据的工具，以及在地下地层上方接收和解码来自工具的NMR数据和NMR定标数据。 该方法还可以包括基于接收和解码的NMR定标数据对接收和解码的NMR数据进行纠错。
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