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。

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。

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。

公开(公告)号：US07536261B2

公开(公告)日：2009-05-19

申请号：US11279739

申请日：2006-04-13

申请人： Dzevat Omeragic ,  Gerald N. Minerbo ,  Richard A. Rosthal

发明人： Dzevat Omeragic ,  Gerald N. Minerbo ,  Richard A. Rosthal

IPC分类号： G01V3/10

CPC分类号： E21B47/026 ,  G01V3/28

摘要： A method to determine a parameter of a subsurface formation such as anisotropy and dip comprises making at least two cross dipole measurements and forming an anti-symmetrized combination from the at least two cross dipole measurements.

摘要翻译： 确定地下地层诸如各向异性和浸渍的参数的方法包括进行至少两个交叉偶极子测量并从所述至少两个交叉偶极子测量形成抗对称结合。

公开(公告)号：US20060235619A1

公开(公告)日：2006-10-19

申请号：US11279203

申请日：2006-04-10

申请人： JIAN YANG ,  DZEVAT OMERAGIC ,  CHENGBING LIU ,  QIMING LI ,  JAN SMITS ,  YANQING ZENG ,  HELENE CLIMENT

发明人： JIAN YANG ,  DZEVAT OMERAGIC ,  CHENGBING LIU ,  QIMING LI ,  JAN SMITS ,  YANQING ZENG ,  HELENE CLIMENT

IPC分类号： G06F19/00

CPC分类号： G01V3/24

摘要： Various technologies for removing shoulder-bed effects from measurements of an earth formation made in a wellbore. In one implementation, a methodology for removing the shoulder-bed effects includes receiving the measurements and constructing a layered model of the earth formation. Each layer has a set of parameters corresponding to one or more types of the received measurements ascribed to each layer such that the set of parameters define a parameter space for the layered model. The methodology may further include dividing the parameter space into subspaces based on relationships among the parameters, selecting from the subspaces one or more starting points, minimizing a cost function using the one or more starting points to generate one or more candidate solutions having the shoulder-bed effects removed and selecting a final solution from the one or more candidate solutions.

摘要翻译： 用于通过测量在井眼中产生的地层的各种技术来消除肩膀床效应。 在一个实施方案中，用于去除肩膀床效应的方法包括接收测量并构建地层的分层模型。 每个层具有对应于归属于每个层的接收的测量的一种或多种类型的参数的集合，使得该组参数定义分层模型的参数空间。 该方法可以进一步包括：基于参数之间的关系将参数空间划分为子空间，从子空间中选择一个或多个起始点，使用一个或多个起始点使成本函数最小化，以生成具有肩峰位置的一个或多个候选解， 床效应被消除，并从一个或多个候选解决方案中选择最终解决方案。

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。

公开(公告)号：US06680613B2

公开(公告)日：2004-01-20

申请号：US10367413

申请日：2003-02-14

申请人： Richard A. Rosthal ,  Dean Homan ,  Thomas D. Barber ,  Stephen Bonner ,  Brian Clark ,  Dzevat Omeragic

发明人： Richard A. Rosthal ,  Dean Homan ,  Thomas D. Barber ,  Stephen Bonner ,  Brian Clark ,  Dzevat Omeragic

IPC分类号： G01V310

CPC分类号： G01V3/28

摘要： Methods and apparatus are disclosed for minimizing or eliminating an undesired axial electric current induced along a subsurface borehole in the process of subsurface measurements with transmitter and/or receiver antennas which are substantially time varying magnetic dipoles with their dipole moments aligned at an angle to the axis of the borehole. Some antennas are disposed within the borehole on instruments having a non-conductive support member. One instrument includes a conductive all-metal body with an antenna adapted for induction frequencies. Antenna shields adapted for controlled current flow are also provided with an all-metal instrument. Methods include providing an alternate path for the current along the instrument body. Another method includes emitting a controlled current to counter the undesired current. Another method corrects for the effect of the current using a superposition technique. An embodiment of the instrument includes an antenna disposed between a pair of electrically coupled electrodes. The antenna is disposed on the instrument such that it comprises a tilted or transverse magnetic dipole. Another embodiment of the instrument includes a non-conductive housing with a conductive segment disposed thereon. An antenna is disposed on the instrument about the conductive segment. Another embodiment includes an antenna disposed between two pairs of electrodes with means to measure a voltage at the electrodes when electromagnetic energy is transmitted within the borehole. Yet another instrument includes an antenna disposed between a first pair of electrodes and means to measure a voltage at the electrodes when electromagnetic energy is transmitted within the borehole. This embodiment also includes means to energize a second electrode pair in response to the voltage measured at the first electrode pair.

摘要翻译： 公开了用于在地下测量过程中沿着地下钻孔感应的不期望的轴向电流的发射机和/或接收机天线的最小化或消除的方法和装置，所述发射机和/或接收机天线是基本上时变的磁偶极，其偶极矩与轴成一定角度 的钻孔。 一些天线设置在具有非导电支撑构件的仪器上的钻孔内。 一种仪器包括具有适用于感应频率的天线的导电全金属体。 适用于受控电流流动的天线屏蔽还配有全金属仪器。 方法包括提供沿着仪器主体的电流的替代路径。 另一种方法包括发射受控电流以对抗不需要的电流。 另一种方法使用叠加技术来纠正当前的效果。 仪器的一个实施例包括设置在一对电耦合电极之间的天线。 天线设置在仪器上，使得其包括倾斜或横向磁偶极子。 仪器的另一实施例包括其上设置有导电段的非导电壳体。 天线设置在仪器周围导电段。 另一个实施例包括设置在两对电极之间的天线，其具有当电磁能量在钻孔内传输时测量电极处的电压的装置。 另一种仪器包括设置在第一对电极之间的天线和当电磁能量在钻孔内传输时测量电极处的电压的装置。 该实施例还包括响应于在第一电极对测量的电压来激励第二电极对的装置。

公开(公告)号：US06556015B1

公开(公告)日：2003-04-29

申请号：US09975411

申请日：2001-10-11

申请人： Dzevat Omeragic ,  Gerald N. Minerbo

发明人： Dzevat Omeragic ,  Gerald N. Minerbo

IPC分类号： G01V326

CPC分类号： G01V3/28

摘要： Systems and methods are provided for determining subsurface formation properties using an antenna system disposed within a borehole traversing the formation. A logging system includes a well tool implemented with an antenna system having transverse or tilted magnetic dipoles. One antenna implementation uses a set of three coils having non-parallel axes. Through mechanical or electromagnetic rotation of an antenna about its axis in order to maximize or minimize couplings, the systems and methods are used to estimate formation anisotropic resistivity, providing reduced borehole effects in vertical and small deviation wells. This invention may also be applied in deviated wells when the borehole is perpendicular to the strike direction, as is often the case in wireline logging.

摘要翻译： 提供的系统和方法用于使用设置在穿过地层的钻孔内的天线系统来确定地下地层特性。 测井系统包括用具有横向或倾斜磁偶极子的天线系统实现的井具。 一个天线实现使用一组具有非平行轴的三个线圈。 通过围绕其轴线的天线机械或电磁旋转以使耦合最大化或最小化，系统和方法用于估计形成各向异性电阻率，在垂直和小偏差井中提供降低的井眼效应。 当钻孔垂直于冲击方向时，本发明也可以应用于偏斜井中，如在电缆测井中通常情况。

公开(公告)号：US08489375B2

公开(公告)日：2013-07-16

申请号：US12738225

申请日：2008-09-08

申请人： Dzevat Omeragic ,  Tarek M. Habashy ,  Valery Polyakov ,  Raymond Kocian ,  Yong-Hua Chen ,  Sofia Davydycheva ,  Raphael Altman ,  Carlos Maeso ,  Douglas Hupp

发明人： Dzevat Omeragic ,  Tarek M. Habashy ,  Valery Polyakov ,  Raymond Kocian ,  Yong-Hua Chen ,  Sofia Davydycheva ,  Raphael Altman ,  Carlos Maeso ,  Douglas Hupp

IPC分类号： G06G7/48

CPC分类号： G01V11/00

摘要： LWD measurements to be used for proactive well placement while drilling a high angle or horizontal wellbore in a reservoir are defined. An initial reservoir model is provided and a section is extracted for a planned wellbore trajectory. A secondary model is generated for the planned trajectory. An area of interest is identified where statistical uncertainty is high. Possible causes of the statistical uncertainty are identified that are not present in the initial reservoir model. A set of parameters are defined based on the possible causes of statistical uncertainty. The area of interest is logged with LWD tool. Sensitivities of the LWD tool response to a subset of parameters are evaluated by performing tertiary model for a range of the subset of parameters. The most sensitive parameters from the subset of parameters and corresponding measurements are identified. LWD measurements are defined based on the most sensitive parameters.

摘要翻译： 定义用于在储存器中钻高角度或水平井眼时用于主动井位置的LWD测量。 提供初始储层模型，并为计划的井眼轨迹提取截面。 为计划轨迹生成二次模型。 确定感兴趣的领域，统计不确定度高。 确定在初始储层模型中不存在的统计不确定性的可能原因。 基于统计不确定性的可能原因定义了一组参数。 利用LWD工具记录感兴趣的区域。 通过对参数子集的范围执行第三模型来评估LWD工具对参数子集的响应的敏感度。 确定参数子集和相应测量中最敏感的参数。 LWD测量根据最敏感的参数进行定义。

公开(公告)号：US20080290873A1

公开(公告)日：2008-11-27

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： G01V3/12

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。