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1. 发明授权

US11520070B2 Effective medium theory of acidized carbonate matrix resistivity employed to calculate the apparent geometric parameters of the wormholes 有权
公开(公告)号：US11520070B2
公开(公告)日：2022-12-06
申请号：US16265613
申请日：2019-02-01
申请人： SCHLUMBERGER TECHNOLOGY CORPORATION
发明人： Dean Homan , John Rasmus , Gallyam Aidagulov , Harold Pfutzner
IPC分类号： G01V3/20 , G01V3/38 , E21B49/00 , E21B43/26 , G01V3/28
摘要： 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.

2. 发明申请

US20210165121A1 Systems and Methods for Determining Properties of Porous, Fluid-Filled Geological Formations Based on Multi-Frequency Measurements 有权
公开(公告)号：US20210165121A1
公开(公告)日：2021-06-03
申请号：US17175985
申请日：2021-02-15
申请人： Schlumberger Technology Corporation
发明人： Siddharth Misra , Dean Homan , Yuteng Jin , John Rasmus
IPC分类号： G01V3/30 , G01V3/26 , E21B47/092
摘要： 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.

3. 发明申请

US20180003042A1 DOWNHOLE SENSING FOR ELECTROMAGNETIC TELEMETRY 审中-公开
公开(公告)号：US20180003042A1
公开(公告)日：2018-01-04
申请号：US15620009
申请日：2017-06-12
申请人： Schlumberger Technology Corporation
发明人： Luis Eduardo DePavia , Dean Homan , Robert Tennent , Gaelle Jannin , Liang Sun , Jiuping Chen
IPC分类号： E21B47/12 , G01V3/30 , E21B17/02 , E21B47/01 , H01Q1/04 , G01V11/00
CPC分类号： E21B47/122 , E21B17/028 , E21B47/011 , E21B47/02216 , E21B47/121 , G01V3/30 , G01V11/002 , H01Q1/04
摘要： 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.

4. 发明申请

US20160139293A1 Subsurface Estimation of Level of Organic Maturity 审中-公开
标题翻译：有机成熟度的地下估计
公开(公告)号：US20160139293A1
公开(公告)日：2016-05-19
申请号：US14944312
申请日：2015-11-18
申请人： Schlumberger Technology Corporation
发明人： Siddharth Misra , John Rasmus , Dean Homan , Carlos Torres-Verdin
IPC分类号： G01V3/38 , G01V11/00
CPC分类号： G01V3/30 , G01F1/74
摘要： 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.
摘要翻译：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。

5. 发明公开

US20230184987A1 Determining Formation Conductivity with Propagation Measurements 审中-公开
公开(公告)号：US20230184987A1
公开(公告)日：2023-06-15
申请号：US17995209
申请日：2021-03-30
申请人： Schlumberger Technology Corporation
发明人： Gong Li Wang , Dean Homan
IPC分类号： G01V3/38 , G01V3/28 , E21B49/00
CPC分类号： G01V3/38 , G01V3/28 , E21B49/00
摘要： Properties of a geological formation, such as dielectric constant and conductivity, may be determined by a propagation well log data acquired by a propagation well logging tool based at least in part on a relative longitudinal position of two or more receivers of the propagation well logging tool. In some embodiments, the relative longitudinal position of the at least two receivers is based at least in part on a first distance between a first receiver of the at least two receivers and a transmitter of the propagation well logging tool and a second distance between a second receiver of the at least two receivers and the transmitter.

6. 发明申请

US20220381939A1 METHOD FOR SATURATION EVALUATION OF GRAPHITIC KEROGEN BEARING FORMATIONS 有权
公开(公告)号：US20220381939A1
公开(公告)日：2022-12-01
申请号：US17771514
申请日：2020-10-27
申请人： Schlumberger Technology Corporation
发明人： Dean Homan , Natalie Uschner-Arroyo , Chang-Yu Hou , Denise Freed , John Rasmus
IPC分类号： G01V3/32 , E21B49/00 , G01V3/26 , G01V3/38
摘要： A method for evaluating saturation of a kerogen bearing subterranean formation includes obtaining conductivity and permittivity values of the formation and providing an effective medium model relating the conductivity and the permittivity to a water filled porosity of the formation and an effective aspect ratio of graphitic kerogen particulate in the formation. The obtained conductivity and the permittivity values are input into the model which is in turn processed to compute the water filled porosity. The method may further optionally include evaluating the water filled porosity to estimate a hydrocarbon producibility of the formation.

7. 发明申请

US20210199836A1 DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES 有权
公开(公告)号：US20210199836A1
公开(公告)日：2021-07-01
申请号：US17203803
申请日：2021-03-17
申请人： Schlumberger Technology Corporation
发明人： Jung Kee Chung , Sameer Bhoite , Dean Homan , Edward Michael Tollefsen , Jaroslav Dobos
IPC分类号： G01V3/20 , G01V3/02 , G01V3/38
摘要： An electromagnetic (EM) telemetry system includes an EM transmitter configured to transmit EM signals downhole and multiple sensors each configured to communicate with the EM transmitter and with another of the multiple sensors. Each sensor is placed a distance from another sensor along a length of a wellbore in the EM telemetry system. The EM telemetry system also includes a processor configured to select two or more sensors of the multiple sensors based on a signal to noise ratio (SNR) of an EM signal received from the two or more selected sensors, a depth of the EM transmitter, or both.

8. 发明申请

US20180003849A1 DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES 审中-公开
公开(公告)号：US20180003849A1
公开(公告)日：2018-01-04
申请号：US15622197
申请日：2017-06-14
申请人： Schlumberger Technology Corporation
发明人： Jung Kee Chung , Sameer Bhoite , Dean Homan , Edward Michael Tollefsen , Jaroslav Dobos
IPC分类号： G01V3/20 , G01V3/38 , G01V3/02
CPC分类号： G01V3/20 , G01V3/02 , G01V3/38
摘要： An electromagnetic (EM) telemetry system includes an EM transmitter configured to transmit EM signals downhole and multiple sensors each configured to communicate with the EM transmitter and with another of the multiple sensors. Each sensor is placed a distance from another sensor along a length of a wellbore in the EM telemetry system. The EM telemetry system also includes a processor configured to select two or more sensors of the multiple sensors based on a signal to noise ratio (SNR) of an EM signal received from the two or more selected sensors, a depth of the EM transmitter, or both.

9. 发明申请

US20160187521A1 Multi-Frequency Electromagnetic Tensor Measurements 审中-公开
标题翻译：多频电磁张度测量
公开(公告)号：US20160187521A1
公开(公告)日：2016-06-30
申请号：US14827632
申请日：2015-08-17
申请人： Schlumberger Technology Corporation
发明人： Dean Homan , John Rasmus , Gerald Minerbo , Siddharth Misra , Aditya Gupta
IPC分类号： G01V3/12 , G01V3/38 , G01V3/30
CPC分类号： G01V3/12 , G01N33/24 , G01V3/28 , G01V3/30 , G01V3/38
摘要： An electromagnetic measurement tool for making multi-frequency, full tensor, complex, electromagnetic measurements includes a triaxial transmitter and a triaxial receiver deployed on a tubular member. An electronic module is configured to obtain electromagnetic measurements at four or more distinct frequencies. The measurement tool may be used for various applications including obtaining a resistivity of sand layers in an alternating shale-sand formation; computing a dielectric permittivity, a conductivity anisotropy, and/or a permittivity anisotropy of a formation sample; and/or identifying formation mineralization including discriminating between pyrite and graphite inclusions and/or computing weight percent graphite and/or pyrite in the formation sample.
摘要翻译：用于制造多频，全张力，复杂的电磁测量的电磁测量工具包括三轴发射器和部署在管状构件上的三轴接收器。电子模块被配置为以四个或更多个不同的频率获得电磁测量。测量工具可用于各种应用，包括在交替的页岩砂层中获得砂层的电阻率; 计算形成样品的介电常数，导电率各向异性和/或介电常数各向异性; 和/或识别地层矿化，包括区分黄铁矿和石墨夹杂物和/或计算地层样品中石墨和/或黄铁矿的重量百分比。

10. 发明授权

US10598809B2 Downhole electromagnetic sensing techniques 有权
公开(公告)号：US10598809B2
公开(公告)日：2020-03-24
申请号：US15622197
申请日：2017-06-14
申请人： Schlumberger Technology Corporation
发明人： Jung Kee Chung , Sameer Bhoite , Dean Homan , Edward Michael Tollefsen , Jaroslav Dobos
IPC分类号： G01V3/20 , G01V3/02 , G01V3/38
摘要： An electromagnetic (EM) telemetry system includes an EM transmitter configured to transmit EM signals downhole and multiple sensors each configured to communicate with the EM transmitter and with another of the multiple sensors. Each sensor is placed a distance from another sensor along a length of a wellbore in the EM telemetry system. The EM telemetry system also includes a processor configured to select two or more sensors of the multiple sensors based on a signal to noise ratio (SNR) of an EM signal received from the two or more selected sensors, a depth of the EM transmitter, or both.

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