公开(公告)号：US09606257B2

公开(公告)日：2017-03-28

申请号：US13217983

申请日：2011-08-25

申请人： Peter T. Wu ,  Dong Weixin ,  Thomas D. Barber ,  Dean Homan

发明人： Peter T. Wu ,  Dong Weixin ,  Thomas D. Barber ,  Dean Homan

IPC分类号： G01V1/40 ,  G01V3/28

CPC分类号： G01V3/28 ,  G01V3/38

摘要： A method for determining existence of a fracture in a formation surrounding a wellbore drilled through subsurface rock formations includes calculating vertical resistivity, horizontal resistivity, apparent formation dip, apparent formation azimuth and axial resistivity for a plurality of longitudinal instrument spacings using measurements from a triaxial induction well logging instrument disposed in the formation. A spread in the axial resistivity values is determined and the axial resistivity spread threshold therefrom. Fracture indicator values and fracture orientation values are calculated from transverse components of the triaxial induction measurements. Presence of a fracture is indicated when at least one of the fracture indicator value exceeds a selected threshold, the axial resistivity spread exceeds the spread threshold and when the apparent formation dip exceeds a selected threshold.

公开(公告)号：US20120065889A1

公开(公告)日：2012-03-15

申请号：US13217983

申请日：2011-08-25

申请人： Peter T. Wu ,  Dong Weixin ,  Thomas D. Barber ,  Dean Homan

发明人： Peter T. Wu ,  Dong Weixin ,  Thomas D. Barber ,  Dean Homan

IPC分类号： G06F19/00

CPC分类号： G01V3/28 ,  G01V3/38

摘要： A method for determining existence of a fracture in a formation surrounding a wellbore drilled through subsurface rock formations includes calculating vertical resistivity, horizontal resistivity, apparent formation dip, apparent formation azimuth and axial resistivity for a plurality of longitudinal instrument spacings using measurements from a triaxial induction well logging instrument disposed in the formation. A spread in the axial resistivity values is determined and the axial resistivity spread threshold therefrom. Fracture indicator values and fracture orientation values are calculated from transverse components of the triaxial induction measurements. Presence of a fracture is indicated when at least one of the fracture indicator value exceeds a selected threshold, the axial resistivity spread exceeds the spread threshold and when the apparent formation dip exceeds a selected threshold.

摘要翻译： 用于确定在通过地下岩层钻探的井筒周围的地层中的裂缝的存在的方法包括使用来自三轴感应的测量来计算多个纵向仪器间距的垂直电阻率，水平电阻率，表观地层倾角，表观形成方位角和轴向电阻率 测井仪器配置在地层中。 确定轴向电阻率值的扩展，其轴向电阻率扩展阈值。 断裂指标值和断裂取向值由三轴感应测量的横向分量计算。 当断裂指标值中的至少一个超过所选择的阈值时，指示断裂的存在，轴向电阻率扩展超过扩展阈值，并且当表观地层倾角超过选定的阈值时。

公开(公告)号：US06710601B2

公开(公告)日：2004-03-23

申请号：US10367475

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： G01V318

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 a device 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 a device to measure a voltage at the elecrodes when electromagnetic energy is transmitted within the borehole. This embodiment also includes a device 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，当电磁能量在钻孔内传输时，该天线具有用于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在井眼内传输电磁能量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而激励第二电极对的装置。

公开(公告)号：US06624634B2

公开(公告)日：2003-09-23

申请号：US10367398

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： 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 a device 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 a device to measure a voltage at the elecrodes when electromagnetic energy is transmitted within the borehole. This embodiment also includes a device 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，当在钻孔内传输电磁能时，器件测量电极处的电压。 另一种仪器包括设置在第一对电极之间的天线和当在井眼内传输电磁能量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而激励第二电极对的装置。

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：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：US20070137854A1

公开(公告)日：2007-06-21

申请号：US11612881

申请日：2006-12-19

申请人： Dean Homan ,  Edward Nichols ,  Michael Wilt ,  Jean Seydoux

发明人： Dean Homan ,  Edward Nichols ,  Michael Wilt ,  Jean Seydoux

IPC分类号： E21B47/00

CPC分类号： G01V3/28

摘要： A wireline tool string used in a wellbore to determine formation properties is disclosed which comprises one or more transmitter tools disposed within the tool string, each transmitter tool having three linearly independent coils; a receiver tool disposed within the tool string, wherein the receiver tool has three linearly independent coils; and a tool string component disposed between the one or mole transmitter tools and the receiver tool; wherein the one or more transmitter tools are selectably spatially separated from the receiver tool along the tool string to provide a desired depth of investigation and measurements made using the one or more transmitter tools and receiver tool are used to determine formation properties

摘要翻译： 公开了一种在井眼中用于确定地层特性的电缆工具串，其包括设置在工具串内的一个或多个发射器工具，每个发射器工具具有三个线性独立的线圈; 设置在所述工具串内的接收器工具，其中所述接收器工具具有三个线性独立的线圈; 以及设置在所述一个或多个发射器工具和所述接收器工具之间的工具串组件; 其中所述一个或多个发射器工具沿着所述工具串可选地在空间上与所述接收器工具分离以提供期望的调查深度，并且使用所述一个或多个发射器工具和接收器工具进行的测量被用于确定地层特性

公开(公告)号：US20060119364A1

公开(公告)日：2006-06-08

申请号：US11334198

申请日：2006-01-17

申请人： Kuo Chen ,  Robert Smith ,  David Oliver ,  Gary Hazen ,  Dean Homan ,  Jan Smits

发明人： Kuo Chen ,  Robert Smith ,  David Oliver ,  Gary Hazen ,  Dean Homan ,  Jan Smits

IPC分类号： G01V3/18

CPC分类号： G01V3/28

摘要： A well logging tool and method are disclosed comprising a conductive mandrel, an antenna array disposed around the conductive mandrel, wherein the antenna array comprises a plurality of antennas disposed on insulating supports and at least one contact spacer, the at least one contact spacer having at least one conductor channel having a contact assembly disposed therein, a sleeve disposed over the antenna array, wherein the sleeve includes at least one electrode assembly, the at least one electrode and the contact assembly adapted to provide a radially conductive path from an exterior of the well logging tool to the conductive mandrel and wherein the electrode assembly comprises a first conductor exposed to the exterior of the well logging tool and at least one second conductor conductively connected to the first conductor and exposed to an inner surface of the sleeve, wherein at least one of the first conductor or the second conductor being in sealed contact with the sleeve to prevent the passage of fluid through the sleeve.

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。

公开(公告)号：US20110309834A1

公开(公告)日：2011-12-22

申请号：US12817060

申请日：2010-06-16

申请人： Dean Homan ,  Wich Wichers ,  Hanming Wang ,  Robert Leveridge

发明人： Dean Homan ,  Wich Wichers ,  Hanming Wang ,  Robert Leveridge

IPC分类号： G01V3/30

CPC分类号： G01V3/28

摘要： A method for determining orientation of an electrically conductive formation proximate an electrically substantially non-conductive formation includes measuring multiaxial electromagnetic induction response within the substantially non-conductive formation using an instrument disposed in a wellbore drilled through the formations. A difference from zero conductivity is determined for each component measurement of the multiaxial electromagnetic induction response. The differences are used to correct the measured response of each component measurement in the electrically conductive response. The corrected component measurements are used to determine the orientation of the conductive formation.

摘要翻译： 用于确定接近电气基本不导电地层的导电地层的取向的方法包括使用设置在穿过地层钻井的井筒中的仪器来测量在基本不导电地层内的多轴电磁感应响应。 对于多轴电磁感应响应的每个分量测量，确定零电导率的差异。 这些差异用于校正导电响应中每个部件测量的测量响应。 使用校正的分量测量来确定导电层的取向。