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11. 发明授权

US06557794B2 Coil shielding method for selective attenuation of an electromagnetic energy field component 有权
公开(公告)号：US06557794B2
公开(公告)日：2003-05-06
申请号：US09932251
申请日：2001-08-17
申请人： Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Brian Clark , Scott S. Chesser , Thomas D. Barber
发明人： Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Brian Clark , Scott S. Chesser , Thomas D. Barber
IPC分类号： B65H3916
CPC分类号： G01V3/28
摘要： A shield apparatus for use in conjunction with a well tool to selectively attenuate one or more electromagnetic energy field components as the components interact with the shield. The shield composed of a flexible strip or conductive body and comprising at least one sloped slot or sloped conductive element therein. The shield being adapted to surround an antenna mounted on a well tool. A method for rotating the axis of the magnetic dipole of a transmitter or receiver coil. A method for winding and shielding an electric coil such that the resultant coil emits or receives selected electromagnetic energy field components.

12. 发明授权

US06566881B2 Shielding method and apparatus using transverse slots 有权
标题翻译：使用横槽的屏蔽方法和装置
公开(公告)号：US06566881B2
公开(公告)日：2003-05-20
申请号：US09746927
申请日：2000-12-22
申请人： Dzevat Omeragic , Jean Seydoux , Richard A. Rosthal
发明人： Dzevat Omeragic , Jean Seydoux , Richard A. Rosthal
IPC分类号： G01V330
CPC分类号： G01V3/28 , G01V3/30 , H01Q1/526 , H01Q7/00 , H01Q13/10 , H01Q17/001
摘要： A shielding method and apparatus for an antenna disposed on an elongated support adapted for disposal within a borehole. The shield providing predetermined attenuation of one or more electromagnetic energy field components as the field components interact with the shield. The shield composed of a flexible strip or cylindrical body and respectively comprising a transverse conductive element or a transverse slot therein. The shields being adapted to cover an antenna mounted on the support. The shields being compatible for use in conjunction with saddle, tilted coils or multi-layered tri-axial coils to produce a pure transverse magnetic dipole electromagnetic field. The shields are also used in methods for shielding an antenna disposed on a support to provide predetermined attenuation of an electromagnetic field component as the field components interact with the shield.
摘要翻译：一种用于天线的屏蔽方法和装置，其设置在适于在钻孔内处理的细长支撑件上。屏蔽层当场分量与屏蔽相互作用时提供一个或多个电磁能量场分量的预定衰减。该屏蔽由柔性条或圆柱体组成，分别包括横向导电元件或横向槽。屏蔽件适于覆盖安装在支撑件上的天线。该屏蔽件与鞍座，倾斜线圈或多层三轴线圈结合使用以产生纯横向磁偶极电磁场。屏蔽还用于屏蔽设置在支撑件上的天线的方法，以在场屏元件与屏蔽件相互作用时提供电磁场分量的预定衰减。

13. 发明授权

US06297639B1 Method and apparatus for directional well logging with a shield having sloped slots 有权
标题翻译：用于具有倾斜槽的屏蔽件进行定向测井的方法和装置
公开(公告)号：US06297639B1
公开(公告)日：2001-10-02
申请号：US09452576
申请日：1999-12-01
申请人： Brian Clark , Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Scott S. Chesser , Thomas D. Barber
发明人： Brian Clark , Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Scott S. Chesser , Thomas D. Barber
IPC分类号： G01V330
CPC分类号： G01V3/30
摘要： Methods and apparatus for making directional measurements of earth formations surrounding a borehole. New antenna coil shield designs are utilized to provide selective attenuation of at least one electromagnetic energy field component as the component interacts with the shield. The new shields are implemented in several downhole tool configurations to provide azimuthally focused formation measurements. In effect, the new shield filters interacting electromagnetic energy field components to pass those components corresponding to a magnetic dipole oriented at an angle from the tool axis. The shields thereby alter a coil's envelope of influence to electromagnetic energy. The new shields also form part of a system for making directional measurements while drilling.
摘要翻译：用于对钻孔周围的地层进行方向测量的方法和装置。新的天线线圈屏蔽设计被用于在组件与屏蔽件相互作用时提供至少一个电磁能量场分量的选择性衰减。新的防护罩在几个井下工具配置中实现，以提供方位角聚焦的地层测量。实际上，新的屏蔽滤波器与电磁能场分量相互作用以通过对应于与工具轴成一定角度取向的磁偶极子的那些部件。屏蔽因此改变了线圈对电磁能的影响。新的盾牌也构成了钻井时进行方向测量的系统的一部分。

14. 发明授权

US09134449B2 Directional resistivity measurement for well placement and formation evaluation 有权
标题翻译：井位置和地层评估方向电阻率测量
公开(公告)号：US09134449B2
公开(公告)日：2015-09-15
申请号：US13030780
申请日：2011-02-18
申请人： Jean Seydoux , Dzevat Omeragic , Dean M. Homan
发明人： Jean Seydoux , Dzevat Omeragic , Dean M. Homan
IPC分类号： G01V3/00 , G01V3/22 , G01V3/30 , G01V1/52
CPC分类号： G01V3/22 , G01V1/52 , G01V3/30
摘要： The present disclosure relates to a method to determine a formation property of a subsurface formation. A downhole logging tool having two or more antennas, at least two of the antennas having a transversely-sensitive element and an axially-sensitive element is provided. Azimuthally-sensitive measurements are obtained using the antennas of the downhole logging tool. The measurements are fitted to a Fourier series having Fourier coefficients that include channel gains, if any. A DC component, a first harmonic component, and a second harmonic component are determined from the Fourier series, a measurement type is determined using the DC component, the first harmonic component, and/or the second harmonic component, and the formation property of the subsurface formation is determined using the determined measurement type.
摘要翻译：本公开涉及确定地下地层的地层特性的方法。一种具有两个或多个天线的井下测井工具，其中至少两个天线具有横向敏感元件和轴向敏感元件。使用井下测井工具的天线获得方位角敏感测量。这些测量值适用于傅立叶级数，其傅立叶系数包括通道增益（如果有的话）。从傅里叶级数确定DC分量，一次谐波分量和二次谐波分量，使用DC分量，一次谐波分量和/或二次谐波分量来确定测量类型，并且确定使用确定的测量类型确定地下地层。

15. 发明申请

US20130160998A1 Lost Circulation Materials and Methods of Using Same 审中-公开
标题翻译：失水循环材料及其使用方法
公开(公告)号：US20130160998A1
公开(公告)日：2013-06-27
申请号：US13335983
申请日：2011-12-23
申请人： Francois M. Auzerais , Dzevat Omeragic , Slaheddine Kefi , Dean M. Homan , John P. Horkowitz , Benoit Vidick , Dominique Malard , Robert Utter , Andrew Hawthorn
发明人： Francois M. Auzerais , Dzevat Omeragic , Slaheddine Kefi , Dean M. Homan , John P. Horkowitz , Benoit Vidick , Dominique Malard , Robert Utter , Andrew Hawthorn
IPC分类号： E21B47/10 , G06F19/00 , G01V3/30 , C09K8/03 , E21B43/00
CPC分类号： C09K8/03 , E21B21/003 , E21B47/04 , G01V3/30
摘要： Compositions of lost circulation materials are provided that are useful for identifying the location of fluid loss in a wellbore. The compositions include additives which enhance a property of the composition such that they can be detected by an LWD or MWD tool capable of measuring the property when the composition is deployed in a region of loss, and can be distinguished by the LWD or MWD tool from the formation and mud fluid. Methods are also provided for using the composition to detect the location of fluid loss and for controlling the loss of fluid from the wellbore. The methods involve deploying the compositions in loss regions by adding the compositions to drilling mud, and measuring a property of the compositions using an LWD or MWD tool.
摘要翻译：提供了用于识别井眼中的流体损失位置的缺失循环材料的组合物。组合物包括增强组合物性质的添加剂，使得它们可以通过LWD或MWD工具来检测，该组合物能够在组合物部署在损失区域时测定其性能，并且可以通过LWD或MWD工具来区分形成泥浆流体。还提供了使用组合物来检测流体损失的位置并控制来自井眼的流体损失的方法。所述方法涉及通过将组合物添加到钻井泥浆中来将组合物部署在损失区域中，并且使用LWD或MWD工具测量组合物的性质。

16. 发明授权

US07759943B2 Subsurface electromagnetic measurements using cross-magnetic dipoles 失效
标题翻译：使用交叉磁偶极子的地下电磁测量
公开(公告)号：US07759943B2
公开(公告)日：2010-07-20
申请号：US11752112
申请日：2007-05-22
申请人： Dean M. Homan , Dzevat Omeragic , Tianhua Zhang , Nicolas Sebline
发明人： Dean M. Homan , Dzevat Omeragic , Tianhua Zhang , Nicolas Sebline
IPC分类号： G01V3/30 , G01V3/18
CPC分类号： G01V3/30
摘要： Sensor assemblies including transmitter and receiver antennas to respectively transmit or receive electromagnetic energy. The sensor assemblies are disposed in downhole tools adapted for subsurface disposal. The receiver is disposed at a distance less than six inches (15 cm) from the transmitter on the sensor body. The sensor transmitter or receiver includes an antenna with its axis tilted with respect to the axis of the downhole tool. A sensor includes a tri-axial system of antennas. Another sensor includes a cross-dipole antenna system.
摘要翻译：传感器组件包括用于分别发送或接收电磁能的发射机和接收机天线。传感器组件设置在适于地下处置的井下工具中。接收器设置在距离传感器主体上的发射器小于6英寸（15厘米）的距离处。传感器发射器或接收器包括其轴线相对于井下工具的轴线倾斜的天线。传感器包括三轴天线系统。另一传感器包括一个交叉偶极天线系统。

17. 发明授权

US06998844B2 Propagation based electromagnetic measurement of anisotropy using transverse or tilted magnetic dipoles 有权
标题翻译：使用横向或倾斜磁偶极子的基于传播的各向异性电磁测量
公开(公告)号：US06998844B2
公开(公告)日：2006-02-14
申请号：US10249030
申请日：2003-03-11
申请人： Dzevat Omeragic , Jacques R. Tabanou , Alain Dumont
发明人： Dzevat Omeragic , Jacques R. Tabanou , Alain Dumont
IPC分类号： G01V3/10
CPC分类号： G01V3/30
摘要： Transverse or tilted magnetic dipole antenna systems are used for electromagnetic logging measurements to determine the anisotropic resistivity of subsurface formations. Combined measurements between transverse or tilted antennas, as well as axial antennas, are used to compensate for receiver antenna mismatch in the system. Some embodiments use model-based parametric inversion to estimate the anisotropic resistivity in the presence of invasion and shoulder-bed effects.
摘要翻译：横向或倾斜的磁偶极天线系统用于电磁测井测量，以确定地下地层的各向异性电阻率。使用横向或倾斜天线以及轴向天线之间的组合测量来补偿系统中的接收机天线不匹配。一些实施例使用基于模型的参数反演来估计在存在入侵和肩膀效应的情况下的各向异性电阻率。

18. 发明授权

US08754651B2 System and method for imaging properties of subterranean formations 有权
标题翻译：地下地层成像特性的系统和方法
公开(公告)号：US08754651B2
公开(公告)日：2014-06-17
申请号：US12945928
申请日：2010-11-15
申请人： Tarek Habashy , Andrew Hayman , Yong-Hua Chen , Dzevat Omeragic , Philip Cheung
发明人： Tarek Habashy , Andrew Hayman , Yong-Hua Chen , Dzevat Omeragic , Philip Cheung
IPC分类号： G01V3/10
CPC分类号： G01V3/20 , E21B49/005 , G01V3/088 , G01V3/24
摘要： A system and method for imaging properties of subterranean formations in a wellbore is provided. The system comprises a formation sensor for collecting currents injected into the subterranean formations, the formation sensor positionable on a downhole tool deployable into the wellbore. The system comprises a controller for controlling the formation sensor and a formation imaging unit. The formation imaging unit comprises a current management unit for collecting data from the currents injected into the subterranean formations, the currents having at least two different frequencies. The formation imaging unit comprises a drilling mud data unit for determining at least one drilling mud parameter, a formation data unit for determining at least one formation parameter from the collected data, and an inversion unit for determining at least one formation property by inverting the at least one formation parameter.
摘要翻译：提供了一种用于在井筒中成像地层的特性的系统和方法。该系统包括用于收集注入到地层中的电流的地层传感器，地层传感器可定位在可部署到井筒中的井下工具上。该系统包括用于控制地层传感器和地层成像单元的控制器。地层成像单元包括用于从注入到地层中的电流收集数据的电流管理单元，该电流具有至少两个不同的频率。地层成像单元包括用于确定至少一个钻井泥浆参数的钻井泥浆数据单元，用于根据所收集的数据确定至少一个地层参数的地层数据单元，以及用于通过将at 至少一个地层参数。

19. 发明授权

US08200437B2 Method for borehole correction, formation dip and azimuth determination and resistivity determination using multiaxial induction measurements 有权
标题翻译：使用多轴感应测量的钻孔校正，地层倾斜和方位角确定和电阻率测定方法
公开(公告)号：US08200437B2
公开(公告)日：2012-06-12
申请号：US12241141
申请日：2008-09-30
申请人： Sofia Davydycheva , Dean Homan , Dzevat Omeragic
发明人： Sofia Davydycheva , Dean Homan , Dzevat Omeragic
IPC分类号： G01V3/18
CPC分类号： G01V3/28
摘要： A method for determining electromagnetic induction properties of subsurface rock formations includes determining an eccentering angle of a well logging instrument disposed in a wellbore. The instrument includes at least one triaxial induction transmitter and at least one triaxial induction receiver. The eccentering angle is determined from symmetric cross component measurement differences. The triaxial induction measurements made from the at least one receiver are rotated to an apparent eccentering angle of zero. At least one electromagnetic induction property is determined from the rotated triaxial induction measurements.
摘要翻译：用于确定地下岩层的电磁感应特性的方法包括确定设置在井眼中的测井仪器的偏心角度。仪器包括至少一个三轴感应发射器和至少一个三轴感应接收器。偏心角由对称交叉分量测量差异确定。由至少一个接收器进行的三轴感应测量旋转到零的中心角。从旋转的三轴感应测量确定至少一个电磁感应特性。

20. 发明申请

US20110238312A1 DIRECTIONAL RESISTIVITY MEASUREMENT FOR WELL PLACEMENT AND FORMATION EVALUATION 有权
标题翻译：方向电阻测量，用于井架和地层评估
公开(公告)号：US20110238312A1
公开(公告)日：2011-09-29
申请号：US13030780
申请日：2011-02-18
申请人： Jean Seydoux , Dzevat Omeragic , Dean M. Homan
发明人： Jean Seydoux , Dzevat Omeragic , Dean M. Homan
IPC分类号： G06F19/00 , G01V3/08
CPC分类号： G01V3/22 , G01V1/52 , G01V3/30
摘要： The present disclosure relates to a method to determine a formation property of a subsurface formation. A downhole logging tool having two or more antennas, at least two of the antennas having a transversely-sensitive element and an axially-sensitive element is provided. Azimuthally-sensitive measurements are obtained using the antennas of the downhole logging tool. The measurements are fitted to a Fourier series having Fourier coefficients that include channel gains, if any. A DC component, a first harmonic component, and a second harmonic component are determined from the Fourier series, a measurement type is determined using the DC component, the first harmonic component, and/or the second harmonic component, and the formation property of the subsurface formation is determined using the determined measurement type.
摘要翻译：本公开涉及确定地下地层的地层特性的方法。一种具有两个或多个天线的井下测井工具，其中至少两个天线具有横向敏感元件和轴向敏感元件。使用井下测井工具的天线获得方位角敏感测量。这些测量值适用于傅立叶级数，其傅立叶系数包括通道增益（如果有的话）。从傅里叶级数确定DC分量，一次谐波分量和二次谐波分量，使用DC分量，一次谐波分量和/或二次谐波分量来确定测量类型，并且确定使用确定的测量类型确定地下地层。

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