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公开(公告)号：US11520070B2
公开(公告)日：2022-12-06
申请号：US16265613
申请日：2019-02-01
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Dean Homan , John Rasmus , Gallyam Aidagulov , Harold Pfutzner
Abstract: Methods may include emplacing a resistivity logging tool in a borehole; stimulating an interval of the formation in the borehole; obtaining at least one resistivity log of the interval of the formation, wherein the resistivity log comprises a survey of one or more depths into the formation; determining a radial invasion of the stimulating fluid into the interval of the formation; and inverting the radial invasion to obtain an input and entering the input into an effective medium model; solving the effective medium model and generating an effective wormhole radius profile and thickness for the interval of the formation.
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公开(公告)号：US20210165121A1
公开(公告)日：2021-06-03
申请号：US17175985
申请日：2021-02-15
Applicant: Schlumberger Technology Corporation
Inventor： Siddharth Misra , Dean Homan , Yuteng Jin , John Rasmus
IPC: G01V3/30 , G01V3/26 , E21B47/092
Abstract: Aspects of the present disclosure relate to a method for determining a contact angle, a wettability, or both, of one or more types of solid particles within a geological formation. The method may include identifying a relative conductive of the type of solid particles and identifying a frequency range for one or more EM measurements. The method may also include determining a contact angle associated with at least one type of solid particles within the geological formation using the electromagnetic measurements corresponding to the frequency range.
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公开(公告)号：US20180003042A1
公开(公告)日：2018-01-04
申请号：US15620009
申请日：2017-06-12
Applicant: Schlumberger Technology Corporation
Inventor： Luis Eduardo DePavia , Dean Homan , Robert Tennent , Gaelle Jannin , Liang Sun , Jiuping Chen
CPC classification number: E21B47/122 , E21B17/028 , E21B47/011 , E21B47/02216 , E21B47/121 , G01V3/30 , G01V11/002 , H01Q1/04
Abstract: A method for recovering data from a downhole tool in a wellbore includes measuring an electromagnetic signal using first and second sensors. At least a portion of the electromagnetic signal is transmitted by a downhole tool positioned in a first wellbore. The first and second sensors are each positioned at a different location along a length of a second wellbore. The electromagnetic signal measured by the first and second sensors is decoded to recover a property measured by the downhole tool.
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公开(公告)号：US20160139293A1
公开(公告)日：2016-05-19
申请号：US14944312
申请日：2015-11-18
Applicant: Schlumberger Technology Corporation
Inventor： Siddharth Misra , John Rasmus , Dean Homan , Carlos Torres-Verdin
Abstract: A method for determining a level of organic maturity of a shale gas formation includes inverting multifrequency complex conductivity data to estimate a volume fraction of graphite, turbostatic carbon nanostructures, and pyrite. The inversion is validated using estimates of the volume fraction of graphite, turbostatic carbon nanostructures, and pyrite. The volume fraction of graphite and turbostatic carbon nanostructures is correlated to a level of organic maturity log of the shale gas formation. The level of organic maturity log is validated using sulfur content obtained from pyrolysis or vitrinite reflectance. A variation of an electromagnetic response due to the volume fraction of graphite, turbostatic carbon nanostructures, and pyrite is quantified. The electromagnetic response is modified by removing the quantified variation to obtain resistivity and permittivity values.
Abstract translation: 用于确定页岩气形成层的有机成熟度的方法包括反演多频复合电导率数据以估计石墨，涡旋型碳纳米结构和黄铁矿的体积分数。 使用石墨，涡轮增压碳纳米结构和黄铁矿体积分数的估计验证反演。 石墨和涡轮增压碳纳米结构的体积分数与页岩气形成的有机成熟度对数相关。 有机成熟度的水平通过从裂解或镜质体反射率获得的硫含量来验证。 量化了由石墨，涡旋型碳纳米结构和黄铁矿的体积分数引起的电磁响应的变化。 通过去除量化变化来获得电阻率和介电常数值来修改电磁响应。
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公开(公告)号：US20220128726A1
公开(公告)日：2022-04-28
申请号：US17429771
申请日：2020-02-11
Inventor： Ping Zhang , Wael Abdallah , Dean Homan , Gong Li Wang , Tariq Alshaikh Mubarak , Anas Almarzooq
Abstract: Methods and systems are provided that use resistivity log data to estimate water saturation of formation rock and/or other useful formation parameters (such as CEC) in a manner that accounts for one or more electrically conductive mineral components contained in the formation rock.
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Patent Agency Ranking
公开(公告)号：US11150373B2
公开(公告)日：2021-10-19
申请号：US16396324
申请日：2019-04-26
Applicant: Schlumberger Technology Corporation
Inventor： Gong Li Wang , John Rasmus , Dean Homan
IPC: G01V3/28
Abstract: The highly valuable properties of resistivity and dielectric constant of a geological formation may be determined using an induction measurement, even for a geological formation with bed boundary or dipping effects, using a one-dimensional (1D) formation model. Induction measurements may be obtained in a wellbore through the geological formation using one or more downhole tools. One or more processors may be used to perform an inversion to estimate resistivity and dielectric constant values of the geological formation. The inversion may be performed using the induction measurements and a one-dimensional model that includes a number of geological layers.
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公开(公告)号：US20190235122A1
公开(公告)日：2019-08-01
申请号：US16265613
申请日：2019-02-01
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Dean Homan , John Rasmus , Gallyam Aidagulov , Harold Pfutzner
Abstract: Methods may include emplacing a resistivity logging tool in a borehole; stimulating an interval of the formation in the borehole; obtaining at least one resistivity log of the interval of the formation, wherein the resistivity log comprises a survey of one or more depths into the formation; determining a radial invasion of the stimulating fluid into the interval of the formation; and inverting the radial invasion to obtain an input and entering the input into an effective medium model; solving the effective medium model and generating an effective wormhole radius profile and thickness for the interval of the formation.
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公开(公告)号：US10036827B2
公开(公告)日：2018-07-31
申请号：US14944288
申请日：2015-11-18
Applicant: Schlumberger Technology Corporation
Inventor： Dean Homan , Siddharth Misra , John Rasmus , Gerald N. Minerbo
Abstract: A method for calibrating an electromagnetic core analysis tool is disclosed. The method includes disposing a tilted test loop inside of or outside of a tool having more than one antenna. A uniform test pack, a layered test pack, and an effective media test pack are each disposed in the tool. A signal is induced in a receiver antenna in the tool when a second antenna is energized with a known current of a known frequency. The induced signal is measured and a calibration gain and offset is determined. A corrected signal is produced and compared with the determined signal based on a forward model.
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公开(公告)号：US20210033746A1
公开(公告)日：2021-02-04
申请号：US16940492
申请日：2020-07-28
Applicant: Schlumberger Technology Corporation
Inventor： Siddharth Misra , Dean Homan , Yuteng Jin , John Rasmus
Abstract: Aspects of the present disclosure relate to a method for determining a wettability of one or more types of solid particles within a geological formation. The method may include receiving a plurality of electromagnetic measurements within a frequency range from an electromagnetic well-logging tool. The method may also include determining a contact angle associated with at least one type of solid particles within the geological formation using the electromagnetic measurements.
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公开(公告)号：US20190353819A1
公开(公告)日：2019-11-21
申请号：US16396324
申请日：2019-04-26
Applicant: Schlumberger Technology Corporation
Inventor： Gong Li Wang , John Rasmus , Dean Homan
IPC: G01V3/28
Abstract: The highly valuable properties of resistivity and dielectric constant of a geological formation may be determined using an induction measurement, even for a geological formation with bed boundary or dipping effects, using a one-dimensional (1D) formation model. Induction measurements may be obtained in a wellbore through the geological formation using one or more downhole tools. One or more processors may be used to perform an inversion to estimate resistivity and dielectric constant values of the geological formation. The inversion may be performed using the induction measurements and a one-dimensional model that includes a number of geological layers.
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