公开(公告)号：US06727705B2

公开(公告)日：2004-04-27

申请号：US10029755

申请日：2001-12-18

申请人： Mark T. Frey ,  Dzevat Omeragic ,  Jacques R. Tabanou

发明人： Mark T. Frey ,  Dzevat Omeragic ,  Jacques R. Tabanou

IPC分类号： G01V308

CPC分类号： E21B43/086 ,  E21B47/011 ,  E21B47/122 ,  E21B47/16 ,  G01V3/30

摘要： Systems and methods for monitoring a subsurface formation property and for placing a borehole in the vicinity of a well in the formation. A slotted tubular is utilized to provide through-tubular signal transmission and/or reception using an antenna adapted to generate a magnetic dipole moment with a transverse or controllable orientation. Hydraulic isolation between the interior and exterior of the tubular at the slot is provided by a pressure barrier. The tubular also forms part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.

摘要翻译： 用于监测地下形成特性并将钻孔置于地层中的井附近的系统和方法。 开槽管被用于通过适于产生具有横向或可控取向的磁偶极矩的天线来提供贯穿管状的信号传输和/或接收。 在管槽的内部和外部之间的液压隔离通过压力屏障提供。 管状物还构成了一系统的一部分，该系统用于相对于现存的井精确地将井放置在期望的距离和取向范围内。

公开(公告)号：US06594584B1

公开(公告)日：2003-07-15

申请号：US09616783

申请日：2000-07-14

申请人： Dzevat Omeragic ,  Tarek M. Habashy ,  Cengiz Esmersoy

发明人： Dzevat Omeragic ,  Tarek M. Habashy ,  Cengiz Esmersoy

IPC分类号： G01N318

CPC分类号： G01V3/28

摘要： A method is disclosed for determining a position of a wellbore with respect to layer boundaries in earth formations. The method includes projecting a trajectory of the wellbore onto an initial model of the earth formations, selecting a segment of the trajectory and calculating along the segment expected responses of a well logging instrument. Differences between the expected responses and responses measured by the instrument along the segment are determined. The model is adjusted, the expected responses are recalculated and the differences are again determined. These are repeated until the differences fall below a selected threshold. In one embodiment, the trajectory of the wellbore can be adjusted to remain within a selected distance of a selected one of the layer boundaries.

摘要翻译： 公开了一种用于确定井眼相对于地层中的层边界的位置的方法。 该方法包括将井筒的轨迹投影到地层的初始模型上，选择轨迹的一部分并沿着测井仪器的段预期响应计算。 确定仪器沿段测量的预期响应和响应之间的差异。 调整模型，重新计算预期响应，并再次确定差异。 重复这些，直到差异低于选定的阈值。 在一个实施例中，可以调整井眼的轨迹以保持在选定的层边界之一的选定距离内。

公开(公告)号：US06584408B2

公开(公告)日：2003-06-24

申请号：US09893175

申请日：2001-06-26

申请人： Dzevat Omeragic

发明人： Dzevat Omeragic

IPC分类号： G01V140

CPC分类号： G01V3/28

摘要： Systems and methods are provided for determining various subsurface formation parameters from electromagnetic measurements. Formulas are disclosed for field components in a coordinate system tied to the logging tool. Closed form expressions for a magnetic field distribution in a homogeneous anisotropic medium are derived from Moran-Gianzero formulas. A complete coupling of a tri-axial system of transmitters and receivers is derived in the tool coordinate system, allowing direct inversion of the measurements for horizontal and vertical conductivity and dip and strike (dip-azimuth) angles. Closed form expressions for these four quantities in the low frequency limit are also derived.

摘要翻译： 提供了用于从电磁测量确定各种地下地层参数的系统和方法。 公式用于与测井工具相关的坐标系中的现场组件。 在均匀各向异性介质中的磁场分布的闭合形式表达式由Moran-Gianzero公式得出。 在工具坐标系中导出三轴发射器和接收器系统的完全耦合，允许直接反转水平和垂直电导率以及倾角和撞击（倾角方向）角度的测量。 也导出了这四个数量在低频极限中的闭合形式表达式。

公开(公告)号：US06573722B2

公开(公告)日：2003-06-03

申请号：US09737891

申请日：2000-12-15

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： G01V302

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.

公开(公告)号：US10450860B2

公开(公告)日：2019-10-22

申请号：US13666815

申请日：2012-11-01

申请人： Valery Polyakov ,  Dzevat Omeragic ,  Torbjørn Vik ,  Tarek M. Habashy

发明人： Valery Polyakov ,  Dzevat Omeragic ,  Torbjørn Vik ,  Tarek M. Habashy

IPC分类号： E21B49/00

摘要： A method for characterizing a subterranean formation traversed by a wellbore includes generating a reservoir model using data collected from the formation, generating a perturbation object comprising a perturbation of the wellbore, integrating the perturbation object with the reservoir model, and forming a geological model wherein the perturbation object is integrated in the reservoir model.

公开(公告)号：US08433518B2

公开(公告)日：2013-04-30

申请号：US12888232

申请日：2010-09-22

申请人： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek Habashy

发明人： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek Habashy

IPC分类号： G01V1/40 ,  G01V3/10 ,  G06G7/48

CPC分类号： G01V3/20 ,  G01V3/28

摘要： A method is provided for determining formation resistivity, anisotropy and dip from wellbore measurements includes moving a well logging instrument through subsurface formations. The instrument includes longitudinal magnetic dipoles and at least one of tilted and transverse magnetic dipoles. Formation layer boundaries and horizontal resistivities of the formation layers are determined from longitudinal magnetic dipole measurements. Vertical resistivities of the formation layers are determined by inversion of anisotropy sensitive measurements. Improved vertical resistivities of the formation layers and dips are determined by inverting symmetrized and anti-symmetrized measurements. Improved vertical resistivities, improved boundaries and improved dips are determined by inversion of the all dipole measurements. Improved horizontal resistivities, further improved layer boundaries and further improved dips are determined by inversion of all dipole measurements.

摘要翻译： 提供了一种用于确定井眼测量的地层电阻率，各向异性和倾角的方法，包括通过地下地层移动测井仪器。 仪器包括纵向磁偶极子和倾斜和横向磁偶极子中的至少一个。 由纵向磁偶极子测量确定地层的形成层边界和水平电阻率。 通过各向异性敏感测量的反演确定形成层的垂直电阻率。 通过反转对称和反对称测量来确定形成层和浸渍层的垂直电阻率的改善。 通过所有偶极子测量的反演来确定改善的垂直电阻率，改善的边界和改善的倾角。 通过所有偶极子测量的反演来确定改进的水平电阻率，进一步改善的层边界和进一步改善的下降。

公开(公告)号：US20110106514A1

公开(公告)日：2011-05-05

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： Methods for three-dimensionally characterizing a reservoir while drilling a high angle or horizontal wellbore through the reservoir are disclosed. An initial reservoir model for the reservoir is selected and a section is extracted for a planned trajectory of the wellbore. A secondary model is generated by performing secondary modeling for at least part of the planned trajectory. An area of interest is identified within the secondary model where statistical uncertainty is high. Possible causes of the statistical uncertainty are identified for the area of interest within the secondary model that are not present or accounted for in the initial reservoir model. A set of parameters for the area of interest are defined at that are based on the possible causes of statistical uncertainty. The area of interest is logged with at least one logging while drilling LWD tool. Sensitivities of the LWD tool response to the subset of parameters are evaluated by performing at least one tertiary model for a range of the subset of parameters. The most sensitive parameters from the subset of parameters and corresponding measurements are identified. One or more real-time LWD measurements to be used for proactive well placement along the planned trajectory are identified and are based on the most sensitive parameters. The initial reservoir model is updated while drilling with information from the tertiary model. The model update is based on physics-based modeling or on inversion and on running multiple models and selection of a best candidate model based on correlations between the tool measurements and modeled results for each geologic model.

摘要翻译： 公开了在通过储存器钻高角度或水平井眼时三维地表征储层的方法。 选择储层的初始储层模型，并为井眼的计划轨迹提取截面。 通过对至少部分计划轨迹执行二次建模来生成辅助模型。 在统计不确定度高的次级模式中确定感兴趣的领域。 在二次模型中，在初始储层模型中不存在或考虑到的关注区域，确定了统计不确定性的可能原因。 定义感兴趣区域的一组参数是基于统计不确定性的可能原因。 在钻探LWD工具时，至少记录一次记录区域。 通过对参数子集的范围执行至少一个第三模型来评估对参数子集的LWD工具响应的灵敏度。 确定参数子集和相应测量中最敏感的参数。 用于沿着计划轨迹进行主动井放置的一个或多个实时LWD测量被识别并且基于最敏感的参数。 最初的油藏模型在使用三级模型的信息进行钻井时更新。 模型更新基于基于物理的建模或反演，并运行多个模型，并根据工具测量与每个地质模型的建模结果之间的相关性选择最佳候选模型。

公开(公告)号：US07925483B2

公开(公告)日：2011-04-12

申请号：US12610942

申请日：2009-11-02

申请人： Peiwen Xia ,  Jan W. Smits ,  Lawrence Chou ,  Qiming Li ,  Dzevat Omeragic ,  James F. Bristow ,  Paul A. Wand ,  Jean-Michel Denichou

发明人： Peiwen Xia ,  Jan W. Smits ,  Lawrence Chou ,  Qiming Li ,  Dzevat Omeragic ,  James F. Bristow ,  Paul A. Wand ,  Jean-Michel Denichou

IPC分类号： G06G7/48 ,  G01V1/00

CPC分类号： G01V1/34 ,  G01V1/40

摘要： A method for displaying a formation model while drilling a wellbore in the formation includes operating a well logging instrument at a measurement point in the formation along a wellbore while the wellbore is being drilled. Measurement data regarding the formation are obtained from the well logging instrument. An actual orientation of a geological structure is determined from the measurement data. A trajectory of the wellbore is displayed in three dimensions as it is being drilled through the formation. While drilling the wellbore, the geological structure is displayed along the trajectory of the wellbore according to the determined actual orientation of the geological structure. The actual orientation reflects an azimuth angle of planes corresponding to the geological structure. The trajectory of the wellbore is changed in response to displaying the determined actual orientation of the geological structure relative to the trajectory.

摘要翻译： 一种在地层钻井时显示地层模型的方法，包括在钻井时沿井身沿地层沿测量点操作测井仪器。 从测井仪器获得关于地层的测量数据。 根据测量数据确定地质结构的实际方向。 当钻井通过地层时，井眼的轨迹显示在三维之中。 在钻井时，根据确定的地质结构的实际取向，沿着井眼的轨迹显示地质结构。 实际方向反映了与地质结构相对应的平面的方位角。 响应于显示确定的相对于轨迹的地质结构的实际取向，井眼的轨迹被改变。

公开(公告)号：US07630872B2

公开(公告)日：2009-12-08

申请号：US11161809

申请日：2005-08-17

申请人： Peiwen Xia ,  Jan W. Smits ,  Lawrence Chou ,  Qiming Li ,  Dzevat Omeragic ,  James F. Bristow ,  Paul A. Wand ,  Jean-Michel Denichou

发明人： Peiwen Xia ,  Jan W. Smits ,  Lawrence Chou ,  Qiming Li ,  Dzevat Omeragic ,  James F. Bristow ,  Paul A. Wand ,  Jean-Michel Denichou

IPC分类号： G06G7/48 ,  G01V1/00

CPC分类号： G01V1/34 ,  G01V1/40

摘要： A method for displaying a formation model includes displaying a trajectory representing a three-dimensional structure of the wellbore; and displaying objects representing a bed boundary along the trajectory, wherein the objects are displayed at distances from the trajectory according to measurement data, wherein the objects are displayed in orientations reflecting azimuth angles of planes corresponding to the bed boundary.

摘要翻译： 用于显示地层模型的方法包括显示表示井眼的三维结构的轨迹; 以及沿着轨迹显示表示床边界的物体，其中根据测量数据在距离轨迹的距离处显示物体，其中，以反映与床边界对应的平面的方位角的方向显示物体。

公开(公告)号：US20070168133A1

公开(公告)日：2007-07-19

申请号：US11332736

申请日：2006-01-13

申请人： Nicholas Bennett ,  Richard Coates ,  Alberto Malinverno ,  Dzevat Omeragic

发明人： Nicholas Bennett ,  Richard Coates ,  Alberto Malinverno ,  Dzevat Omeragic

IPC分类号： G06F17/00

CPC分类号： E21B49/00 ,  G01V3/38

摘要： A computer-based method is provided for modeling and visualizing a property of a subterranean earth formation while drilling a borehole therethrough. The computer-based method gathers electromagnetic signals corresponding to a current measurement station location of a measurement-while-drilling tool, and generates a multilayer model corresponding to such electromagnetic signals. A histogram characterizing uncertainty of the multilayer model is used to generate a set of color hue values which represent predictions of the formation property for depth values above/below the tool, and a corresponding set of saturation values (which represent uncertainties for these predictions). A curtain plot is generated and displayed. The curtain plot employs colors to visualize formation property predictions for depth values above/below the tool over successive measurement station locations. A new column of the curtain plot is generated for the current measurement station location. The color values of the new column are based upon the set of color hue values and the set of saturation values derived from the histogram. The saturation levels of the new column represent uncertainties for the corresponding predictions.

摘要翻译： 提供了一种基于计算机的方法，用于在钻孔通过其中的地下地层的性质的建模和可视化。 基于计算机的方法收集对应于钻孔测量工具的当前测量站位置的电磁信号，并且生成对应于这种电磁信号的多层模型。 表征多层模型的不确定性的直方图用于生成一组色调值，它们表示对于工具以上/下方的深度值的形成属性的预测，以及对应的一组饱和度值（这代表这些预测的不确定性）。 生成并显示窗帘图。 窗帘绘图使用颜色来显示在连续的测量站位置上的工具上方/下方的深度值的地层性质预测。 为当前测量站位置生成一个新的窗帘图。 新列的颜色值基于色彩值的集合和从直方图导出的饱和度集合。 新列的饱和度水平表示相应预测的不确定性。