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公开(公告)号：US20160376886A1
公开(公告)日：2016-12-29
申请号：US15189343
申请日：2016-06-22
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , William Lesso , John James
CPC classification number: E21B47/06 , E21B21/08 , E21B34/06 , E21B43/12 , E21B47/04 , E21B47/10 , E21B49/003 , E21B49/087 , G01V3/38
Abstract: A method for evaluating inflow or outflow in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured during static conditions or while drilling and may be further processed to compute a density of an inflow constituent in the annulus. Changes in the computed interval density with time may be used as an indicator of either an inflow event or an outflow event.
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公开(公告)号：US20160290125A1
公开(公告)日：2016-10-06
申请号：US14673598
申请日：2015-03-30
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , Tianxia Zhao , Thomas D. Barber , Fernando Garcia-Osuna
CPC classification number: E21B47/122 , E21B49/00 , G01V3/18 , G01V3/30
Abstract: A tool is for use in a borehole during drilling with a drilling fluid circulating in the borehole. The tool may include a housing, a plurality of spaced apart radio frequency (RF) transmitters carried by the housing, spaced apart RF receivers carried by the housing, and a controller to communicate with the plurality of transmitters and the receivers. The controller may, at a given depth within the borehole, determine attenuation resistivity measurements and phase-shift resistivity measurements both corresponding to different radial distances from the borehole. The controller may also determine when a fracture has occurred in the geological formation at the given depth allowing the drilling fluid to intrude into the geological formation based upon the attenuation resistivity measurements and the phase-shift resistivity measurements.
Abstract translation: 钻井中钻井液在钻孔中循环的工具用于钻孔。 工具可以包括壳体，由壳体承载的多个间隔开的射频（RF）发射器，由壳体承载的间隔开的RF接收器以及与多个发射器和接收器通信的控制器。 控制器可以在钻孔内的给定深度处确定对应于距钻孔的不同径向距离的衰减电阻率测量值和相移电阻率测量值。 控制器还可以基于衰减电阻率测量和相移电阻率测量来确定给定深度处的地质层中何时发生断裂，允许钻井液侵入地质层。
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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：US12163413B1
公开(公告)日：2024-12-10
申请号：US18443386
申请日：2024-02-16
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , Dean Homan , Gong Li Wang
Abstract: A method can include receiving dielectric data from a downhole dielectric tool of a drillstring disposed in a borehole in a target material that includes a target material boundary between the target material and one or more other materials; generating a geosteering command, based at least in part on the dielectric data, that calls for orienting a drill bit of the drillstring with respect to the target material boundary; and issuing the geosteering command to a geosteering actuator of the drillstring.
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公开(公告)号：US12025765B2
公开(公告)日：2024-07-02
申请号：US17771514
申请日：2020-10-27
Applicant: Schlumberger Technology Corporation
Inventor： Dean Homan , Natalie Uschner-Arroyo , Chang-Yu Hou , Denise Freed , John Rasmus
CPC classification number: G01V3/32 , E21B49/00 , G01V3/26 , G01V3/38 , E21B2200/20
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US11822038B2
公开(公告)日：2023-11-21
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 , E21B47/092 , G01V3/26
CPC classification number: G01V3/30 , E21B47/092 , G01V3/26
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：US11774631B2
公开(公告)日：2023-10-03
申请号：US17250041
申请日：2019-05-10
Applicant: Schlumberger Technology Corporation
Inventor： Joan Abadie , Mohammad Taghi Salehi , Koji Ito , John Rasmus , Xiao Bo Hong
IPC: G01V5/10
CPC classification number: G01V5/107
Abstract: A method can include receiving neutron data and density data for a borehole in a geologic formation; determining a migration length value for a layer of the geologic formation based at least in part on the neutron data; forward modeling at least the layer based at least in part on the migration length value and the density data; and outputting, based at least in part on the forward modeling, modeled neutron data for the layer.
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公开(公告)号：US11520075B2
公开(公告)日：2022-12-06
申请号：US16439624
申请日：2019-06-12
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Shashi Menon , Aria Abubakar , Vikas Jain , David Furse Allen , John Rasmus , John Paul Horkowitz , Valerian Guillot , Florent D'Halluin , Ridvan Akkurt , Sylvain Wlodarczyk
Abstract: Methods and systems for augmented geological service characterization are described. An embodiment of a method includes generating a geological service characterization process in response to one or more geological service objectives and a geological service experience information set. Such a method may also include augmenting the geological service characterization process by machine learning in response to a training information set. Additionally, the method may include generating an augmented geological service characterization process in response to the determination information.
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公开(公告)号：US11048012B2
公开(公告)日：2021-06-29
申请号：US16173245
申请日：2018-10-29
Applicant: Schlumberger Technology Corporation
Inventor： John Rasmus , Gong Li Wang , Dean M. Homan , Natalie Uschner-Arroyo
Abstract: A formation characterization system can include a processor; memory accessibly by the processor; instructions stored in the memory and executable by the processor to instruct the system to: acquire induction measurements in a borehole in a formation using an induction tool; determine dielectric properties of the formation using the induction measurements; and generate a log that characterizes particles in the formation based on the dielectric properties.
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40.发明授权公开(公告)号：US10809416B2
公开(公告)日：2020-10-20
申请号：US15845515
申请日：2017-12-18
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Sushil Shetty , Dzevat Omeragic , Tarek M. Habashy , John Rasmus , Jeffrey Miles
Abstract: Methods and apparatus for characterizing a subterranean formation traversed by a wellbore including collecting data from the formation using a tool wherein the tool collects data to form an azimuthal image, characterizing a section of the formation comprising data and images acquired in a high angle wellbore section or horizontal wellbore section using a parametric model, and performing an inversion using apparent densities and volumetric photoelectric factor images to build a formation model wherein the inversion is tailored for high angle wellbore sections and/or horizontal wellbore sections.
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